I imagine emergency-stopping with it: smacks into the back of a lorry, and the monobiker keeps spinning inside the wheel with legs fully extended out on each side.
11:57 It's a statute of law that when a British person says "Morning!" to any other British person then all parties will immediately disregard anything unusual and continue about their day.
That's... Actually very true. At least in most cases. It's not gonna help you if you're caught with a dead body or something but otherwise it's like some sort of mystical incantation to us.
1:42 Im a metal fabricator. I dont watch this channel for tips and tricks, i watch it for entertainment. So keep up the good work 😉❤️ My tips for you? 1. Gloves. ALWAYS wear gloves, and tuck in any loose shirt material when using an angle grinder. toull thank me later when you DON'T lose a finger or gouge your abdomen after it binds and kicks around at the speed of light. 2. Clamp EVERYTHING. this not onoy keeps the material in place, removing one of the many variables involved with cutting metal, but also gives the tools more constant contact with the material, making it cut easier with less force. Overall improving safety, efficiency, and reliability of your cuts. If i think of more as i keep watching I'll put them here ❤
Can't help feeling if it was 3" taller inside, you'd get your head in and keep your weight central as opposed to off to the side, which might give you more control/balance - the option to shift your weight has got to be a good thing, right?
Yeah, I think your right, he needs more head room, so he needs to be Lower... the straight cross bar that the saddle is on needs to come down to another support wheel, which would lower the whole set-ups centre of gravity, and also give more head room. Then he can lean more for better balance. Also, rather than going pure monowheel with his feet up, he could get some heelys shoes, the ones with the hidden wheels in the heels, and just keep his feet down for stability.
I feel that if you'd just add a little swaying part at the front with a single smaller wheel, functioning as stabilizer, foot rest, and steering, it would actually work decently well
I ride a lot of different bikes, and I feel like a wider wheel/tread would go a long way to making the thing more stable, in addition to the positioning changes others have mentioned. But that’s an awesome start! I’m digging this project!
While the goal of the monowheel is to be contained within the monowheel, yours is a bit... small... but since you've got it build, a step by step suggestion as a jumping off point for mark 2! Step 1. Extend the foot rests in front of the monowheel with a comfortably wide stance. The forward weight will reduce forward rise from acceleration. Adjust weight accordingly (but do not completely negate rise.) The forward, wide stance will allow you far greater balance, and thus turning. Step 2. Add a wheel on the foot rests, but with high resistance, potentially a breaking system. This can be a single wheel in the center or, more preferrably, two small wheels on the outer edge for stable and safe breaking. These wheels will not touch during actual driving, maintaining a "monowheel" status. Step 3: HELMET. You got a light bonk in the video, but that could have been quite a bit worse. Invest in a full face DOT helmet if you're going to leave massive bolts at temple level. Are extra wheels for breaking/safety cheating? Do the wheels on a jet make it any less of a jet? If you are willing to rebuild the inner body... lower the bottom rail for a more "cruiser" feel. Lower center of gravity should help with canting forward and back to offer more head clearance. You got brained because you couldn't shift weight to the other side with no foot brace and the risk of a lobotomy by ducking through the tiny gap.
4. Develope a feedback loop with a gyro that varies throttle/braking to control the internal mass. A larger wheel with the person close to the bottom will give more authority to resist internal rotation.
I agree with this except DOT is the worst helmet standard. Never set that as your baseline, it’s essentially like taping a popcorn bowl to your head and calling it safe. There are now like three different helmet standards of increasing difficulty to obtain past DOT.
This is fantastic :) I built a monowheel a few years ago, although mine was noisy and gas-powered with chains to gear it down. I much prefer your powertrain. I was nodding as you were saying you can’t let off when you start to panic haha. Mine was very heavy (around 100kg), I wonder if that made it easier to ride. I could occasionally go a mile or more with my feet off the ground, at 15-20 mph. It hasn’t run in a long time but I always wanted to build another.
@@nana-nr6xr not really an invention lol, also would be a safety risk. He does need to keep balanced centrally though, but the wheel is a bit too small
I think the problem is that when you go to brake, you ought to brake the big wheel and not the small wheel that is driving the large wheel. That way when you brake, it makes you lean backwards and not forwards.
You need to add a foot rest that is out in front of the mono wheel plus a little more weight in the front. Part of the problem you're having is that there isn't enough weight in the front. On top of that without a solid foot rest it's hard for your body to balance and control. I'd also recommend making the rollers out of a different material, but I think you know that.
I know this a year old video, but after reading several comments, I find it odd that I didn't notice any recommendations of a backrest of sorts. It would help keep the center portion from acting like a pendulum and maybe help stabilize the rider as well. Forward foot pegs, with landing gear wheels to help with sudden stop anti-roll, would also be a good add. Cool concept!
Always wear a helmet when doing your projects please. I remember once a guy from India that was building a compact helicopter and the propeller malfunction and hit his head, he died and was only 29… sad story
Rule of thumb, when you cut let the other end free hang, it won't cause pressure and just fall, if you don't you can get tool kickback and get injured, be safe . . .🎉😊
Here are a few tips to improve on the design: 1. Increase the weight at the bottom. You want a low center of mass so you stop rotating inside the wheel as easily. 2. The ratio from the immer wheel to the outer wheel is way too low. Put on a bigger wheel, which will prevent you further from rotating inside of the wheel, due to the higher energy required from the motor to spin the outer wheel but it will also increase your top speed. 3. Put some foot pegs further out. You are way too cramped in there and it will also make you spin less inside the wheel, due to you being stretched out further.
4. Add an automatic gyroscopic balance systems to keep it from falling to the side. I've seen videos where people built monowheels that self-balance and basically stand on their own.
I think making a penta shaped frame will lower his mass and increase head room allowing for a lower center of gravity and keeping the weight distribution centered. Overall looks like a very fun project though.
A counterweight hung under the seat would help lower the center of mass increasing the stability. One possible option is to use sealed lead acid batteries as the counterweight with a DC to DC charger suitable for the task.
That looks like a fun build. I have seen many of these mono wheels and they all have one thing in common, the seat is very low for better stabilization. Your seat may be too high and is the reason you are having trouble balancing the monowheel while driving. Lower the seat, and you should have much better control.
the balance Issue results from the simple fact, thast the bike ist far too small, and so he has to lean out to one side constantly. the center of mass is not the problem, actually it would be better, if the seat was even higher because the angular momentum acting against the gyroascopic effect would be lower.
@@cnschu Look at other videos of people riding these. They all have a common factor... The seat is lower. In Physics, this means lowering the center of gravity.
@@cnschu That would be true if the point where the wheel tips over is himself (aka the center of mass) but that would only happen in the air or in space, here the wheel is bound to tip over in the point where it makes contact to the ground so bringing the center of mass closer to that point makes it so that the gyroscopic effect can help stabilize it more effectively because it sort of has more leverage so to speak
just a super tiny note here: when cutting with the sawz all, make sure the metal foot is pressed firmly against the thing your cutting. this helps move the machine make up again and the weight of the unit helps move it back up again, you shouldn't have to apply much force at all just hold it in place as it does the work
Things that I think would improve stability: 1. Larger diameter with you sitting lower to the ground relative to the total diameter 2. Actual tires that are inflatable on the outside 3. Wider/fatter tires with a curved profile (ala bicycle/motorbike)
Counter-intuitively, I think sitting closer to the ground might make things worse. Part of the thing that makes a bike easy to stabilise is the weight that you can shift (i.e. your body) has a larger moment arm around the pivot (i.e. where the wheels touch the ground) than the rest of the bike. The difficulty is that you do want the inner ring to be bottom weighted because otherwise you risk spinning around as nearly seen a couple of times in this video. I think what you really need is a silly heavy weight attached at the bottom of the inner ring, so close to the ground that it has barely any moment, but a relatively central riding position.
@@Chaddledee Best fix he can easily apply is fill the metal pipe with weight to increase angular momentum and thus stability. As for braking you would need either your feet or some sort of assist wheels that come down when you brake. Not an ideal solution but there is a reason why monowheels are only built in some curious hobbyists sheds
Just went down the rabbit hole of seeing how other people have approached monowheels - and I was surprised that seemingly nobody has come up with a better answer to steer and/or stop these things or make them even a little bit more stable. Seems like a fun project though - can't wait to see where this ends up.
I think the reason most of the reason few people build monowheels is because of the "gerbiling" i.e. spinning backwards when breaking which afaik is simply a problem of the inherit physics of these vehicles. Which is a shame as they're really cool.
My idea was to use flywheels to catch the momentum so stopping is easier. Also a monowheel is not verry stable because you can't steer it. If you look at a bike you'll see that the front wheel wil turn if you angle the bike. I think this problem could also be fixed with a flywheel. This time to use it to create the "steering momentum".
Perhaps there could be a box of flywheels for momentum storage; spin up a flywheel before you start driving and when braking that flywheel could be braked hard to dump its opposite momentum into the vehicle, thus counteracting the undesired spin. Pairs of flywheels on the other axes of freedom could *maybe* offer some stability there; dump some momentum to effect the desired reaction in a pinch. Maybe go crazy with not just a fixed flywheel but a set of Control Moment Gyroscopes with axes that can be turned as well, if they can be made fit? That however sounds way too bulky for a single person vehicle....
Use the shoes with the wheels on the heels. I don’t remember what they are called. But they would be great for this because the wheels would just roll along like training wheels for a bike, it keeps it stable while not scraping anything.
it is wheelies shoes, though with how the wheel doesn't have stabilizer and he is not used to it yet, his feets are basically act as brake at this point.
It’s kinda a lot to think about but you need to add some kind of gyroscope to sort out balancing plus the wheel is fixed where as others move and sway to allow for turning and balance
Nice work. I think it would be easier to ride if you added a lot of ballast low down under your seat. That would stop it tipping forward when you brake, and probably make it easier to stay upright too. I hope you make a part 2 of this video with a few tweaks to the design because this is so close to being *almost* a practical vehicle ;)
Рік тому+3
It would still be unstable, but having a lower center of gravity would allow for *some* acceleration without it wanting to rotate the driver along with the wheel when the brakes are applied.
Would help but not much. It needs a powerful gyro attached to the seat. Vertical axis, 2 flywheels rotating in opposite directions.Only this would make it possible to properly brake, accelarate and move upheel
id love to see a part two! definitely curious to see if lowering the seat bar, replacing the PLA bearings, and other improvements could make it a more stable ride. also want to see you order some heelies for when you use your legs to stabilize.
I don't know much about engineering nor mechanics, but I feel like using the same system that stabilises a hover board or segway platform for this mono wheel would help a lot. Also, I think incorporating weight to the front would help.
That thing is surprisingly nippy for only being powered by a chinese scooter motor. An inbuilt gyroscope (as hinted to in the design of the South Park monowheels) would probably work wonders for making it ridable by reducing the number of axis you have to worry about. Great stuff!
Should not be needed (gyro) - if small ones can ride it, so could Sam with a little training. An old vid of this driven by 4-5 year old kid: ua-cam.com/video/GF0rqlgdaHM/v-deo.html 🤓 Edit: The South Park 'IT' bike - epic 👍😂🤣
Use a flywheel with a controller for stabilization by countering the unwanted angular momentum by spinning up the flywheel. No idea how practical it would be, how difficult to implement and where it's limit would be of what "leaning" angle it would be able to recover But maybe give it a try. Gyroscopes and angular Momentum will always be fun :)
I cant find the video, but there was a video from a Japanese show where they put masters and technology to compete. In one episode they has a master bike builder and a technology team with the challenge of gliding with a bicycle on a narrow path without hands. The technology team put a controlled flywheel on the back of their bike but the implementation failed since the rider also instinctively corrected their balance fighting the flywheel.
@@Enginehearth I can't find the video but I suspect that the gyroscope is acting to slowly. A bike is also different from a mono wheel in that is has active steering controls. When installing a gyro scope for stability on a mono wheel I would suggest using it for steering as well. The fly wheel is trying to keep the monowheel along a certain axis, when steering, this axis should slightly lean towards the desired steering direction. Not sure it would work but would love to see them give it a try
@@Enginehearth I suspect it didnt fail because of countering the human, but maybe because of the counter-intuitive way that steering a bike works. You cannot just lean the bicycle to the left to counter a movement to the right, actually, this will have the opposite effect. When you turn, you push your steering wheel in the opposite direction, which increases friction on the opposite side of the tire, which makes a momentum which makes the bike turn. So to turn, you first steer in the opposite direction, before the lean angle increases and you 'switch' direction (rather you go to an almost neutral steering angle). I am not sure how this would work for a monowheel though, as the steering isn't done in the same fashion.
*Girlfriend sees the Hello Kitty bike on the wall* Girlfriend: "Oh it's your daughter's bike? How cute!" Sam: "Nah it's mine. I didn't have the heart to cut it so i kept it because of sentimental value." Girlfriend: 👁👄👁
This is very exciting. If you do a version 2, take advantage of your friend's shop and turn some wheels out of delrin or something for the idlers. Consider using contact cement for the tires. If it's in your budget, a wheel large enough that you don't have to duck under while riding might work better. Fly safe!
This is awesome! Great job documenting the whole process! I do have 2 bits of critiques if you want them. If you don’t, read no further: 1. Add a little bit of background music, the silence was a bit eerie. 2. Add two small wheels to the front so they don’t touch while riding but if you brake, it’ll rotate forward where the two wheels will then contact the ground, stabilizing you side to side and front to back while you slow down
Friendly safety note: grinding galvanized steel is just as bad as welding it. You were probably fine, being outside and not doing much of it. But I made that mistake once and ended up with some nasty metal fume fever.
I got some surprising (to me) symptoms and all I did was cut galvanized pipe, drill a couple small holes, and bend the pipe with a pipe bender. I did it outdoors and had been holding the pipe with gloveless hands and I think a lot of my exposure was due to skin contact with pipe
Considering the fact that you broke the first trampoline wheel, there’s no excuse for not finding a wheel with the proper diameter to fit yourself inside… Literally would only have had to lengthen the inside stabilizer rods.
putting a little anti-"wheely" bar on the back might be good. spring loaded or something with a small wheel itself to roll about. also put on some heelys lol
suggestions: instead of just rolling it forward, you may want a controller so the motor tries to keep interior section upright, like one of those hoverboards. And then you may want a wider wheel so side-to-side balancing is easier.
Instead of a controller, you’d want to use a gyroscope so that you can adjust for speed independently of the system. If not, then the process of braking quickly may break the system keep you up causing you to flip over.
This was my thought too! So close to impaling himself and it made me nervous as all get out. Even just reversing the bolts the other way if you have a tendency to only look out one side of the wheel.
Hand tool tip: With the reciprocating saw, hold the plate that you slide the blade into, flush up against the material you are cutting. Do not pull it back from/away from the object you are cutting, to the point that it is freely sawing into the material while you hold it in mid air. If you leave/hold the plate laying up against the material you are cutting, you take the strain of having to hold the saw still (from jerking back and forth in your hands if the blade catches wrong while cutting through the material) off of yourself and let the saw do what it was designed to do the best way it can. Like how you operate a chainsaw, you set those metal teeth at the back end of the blade up against the wood, and then "wiggle" the blade through the tree using the teeth as your pivot point. You can break wrists/fingers/arms etc when you dont keep the saw butted up against the material you are cutting, and then try to hold it in space yourself.
Could you add more mass low down so that the part you sit on wants to stay planted more? Like a keel on a ship. This would also lower your cg and I think help with balance as well.
Yep, the lower you can get the CG, the less prone these are to 'roll over', either when accelerating or braking. Though it's always going to be a concern
It works shockingly well! I wouldn’t have expected it to be as easy to control. I think that if you were to add some weight below the seat it might help with the problem of the frame wanting to spin around when letting off the throttle. Still, that’s only my speculation. Nice build!
No thats a pretty solid intuition. I'd put a serious chunk of weight under, and slightly to the back to counteract the small frame pushing the rider forward. The bigger, and safer, monowheels usually have the rider leaning right back countering the mechanism urge to flip forward. Harder in this significantly smaller frame. But it could be replaced by a big chunk of lead just at the back of the seat.
If you ever are intending to revisit this project at all in the future... might I offer a suggestion for inspiration? Star Wars had an interesting approach to it with General Grievous' legged bike. Where you basically take the engine from the bike and shove it in the sidecar, so you're sitting on one side of the wheel, but can still see _under_ the inside of the rim and out the other side. Oh, and kickstand leg. It's also safer, since you can add a counterweight system so if it loses balance, you can knock it on the side that DOESN'T have the driver. And even if it falls on the side of the driver, rollbar edges and the clearance in between the drive ring and the outer rung ensure their helmet isn't hitting too much metal and pinning the driver down. Perhaps if it's possible to do just that; take the seat of a motorbike and shift it to the side, so you can make the engine and gyroscopic system as it needs to be. Just keep enough out of the center so you can see over the engine and under the wheel, and wear a helmet.
Yes, it's likely to be far more advanced, even before taking gyroscopic balancing into account, but perhaps with a bit of luck a smaller scale proof of concept will go far.
It might be a good idea to mount a counterweight under the seat. That would be a good place to add a large battery pack, and any other equipment you need, as well as a large block of steel or lead. I've seen some monowheels that used a petrol engine, and they mounted them at the bottom of the frame as a counterweight.
It would’ve been easier to ride if you had a larger frame for the wheel, and also a wider tire for more room to sit and also just for better balance. But I’m not an engineer so… yeah
I think the standard monowheel breaking method is to just fall on your side. Actually breaking causes you do go in to a death spiral (as you discovered). You could try training wheels. Instead of on the sides like a normal kids bike just put one in front and one behind the main wheel. Once you get used to that you could do the old 'raise them up a bit' trick till you get good at it.
Or maybe by programming the motor to slowly pick up speed and not stopping all the way the moment you brake and therefore get more stability when driving?
Love it :) I've been fascinated by monowheels for a couple of decades, but haven't had the where-with-all to pursue it yet. Maybe try putting the seat down a lot to move your centre of balance, and drill holes in the top, heavy steel bracket (al la racing car design), to further reduce top weight. At the moment you're quite close to the central pivot point of the contraption, so acceleration and deceleration tries to rotate every thing around you, whilst you spin in the middle. If your weight was a lot closer to the bottom, then the accel. and decel. would have to try and lift your mass upwards around the arc of the wheel, thus providing resistance that can be translated into forward and regressive motion. I think :) It's been a mental experiment in my head for years. My only concern is that when braking, your mass would shift towards the rear a bit and I'm not sure if that would de-stabilise the Monowheel. All the best with the project.
When your monowheel smashed into your head, I laughed and poured water straight down my trachea and started choking, prompting my girlfriend to try and run and save me where she ran into a chair leg and fell down on the ground. Your machine almost claimed 3 lives so far!
Even though other people have made mono wheels in the past, you built one with your own parts and somewhat succeeded. Maybe more weight on the bottom support could lower the point of stability ( I have no idea, just a thought ). Either way, good show. You get high points for trying. Good luck.
I was also thinking he should basically be sitting on the bottom of the ring with his feet up in front of him, would allow his weight to have more influence over the motion
Thats one ingeneous and creative design considering you didn't even have a shop to build it in. Everyone is giving you advice but I don't see anyone doing it. Too much fun !
With an added weight in the center bottom, I feel like you could up the stability considerably while also keeping it from reacting so heavily to accelerating
As an expert in nothing, the only thing I allow myself to say is that's a gorgeous build. (Or maybe a wider surface wheel can help) And good luck with practising that.
0:35 Cant wait for someone to actually make truly drivable, visually a close copy of this thing! With electronically assisted gyro for stability, drive by wire assisted steering. Like any car, sit and drive with ease! That *will* be the coolest freaking thing in history of the universe!
It might be possible to build this by just modifying a hoverboard. The IMU could balance it standing up, and then you’d only have to worry about side to side
@@euctheeast3902 Yes, but the sensors and control board can send a signal to something that can handle more powerful motors. They have power, but they need control.
@@DigitalJedi yeah I just think you'd better of with an euc if you were gonna go that route you would probably be able use the stock controller and motor from an euc, I don't believe any hoverboards controller would be able to handle the voltage needed to operate such a a machine
What that needs is two much smaller wheels one in front and back a lill off the ground to stop the forward and backward pitch when pulling away or stopping, also since your weight is pressing down it slightly deforms the tube wheel directly under you between the front and back lower kick rollers so it needs a support with a kick roller directly under you but the ride will become a little harder so maybe a sort of spring loaded support there 👍, this sort of thing has potential with the right design I think
I feel like you could benefit from sitting lower in the monowheel. Lower center of gravity. Maybe use some self-balancing magic like in EUCs or Segways. Oh and definitely find a way to fit in the wheel with room for safety gear and all the bells and whistles. Keep up the good work!
A microcontroller to adjust the throttle input to account for frame rotation might help, and/or some forward foot pegs outside of the hoop with small wheels or sliders on the bottom to keep the frame from rolling when you let off the throttle. ;)
Okay PLEASE Sam see this and try it out: What if you wore Wheelies while riding it? Hear me out this might actually be an amazing idea. If you wear Wheelies you've effectively made your own body into a Tricycle. You're using your own legs as both training wheels and for turning. Perfect. Please try it and show us. Thank you. Upvote comment pls so he see
This is really interesting. A tip could be to make the wheel a lot bigger so that it supports and balances you a lot more, it also might be a good idea to add more structure as well. Wonderful work I Would love to see these beautiful things in the future.💗💗💫💫
The only way this would be stable is to have a heavy enough counterweight that automatically adjusts to always ensure the center of gravity from front to back stays the same.
If you increased the mass of the wheel you might get more of a gyroscopic effect so the monowheel would be more stable. This is how motorcycles are so stable, might be worth a try! :) 💕
Not only that, but the entire center of gravity needs to be lower. his center of gravity is too close to the center of the wheel. monowheel designs tend to have you sitting VERY low.
The gyroscope argument is a tired old one... bicycles don't have enough weight in their wheels to keep a person up, what keeps the person up is the continual change in direction, a cyclist is always falling, just changing which sides he's falling to so he never actually falls.
@@Metal-Possum Yes and needs an active steering system to work. Fall to the left, turn to the left etc. What most cyclists don't realise it is the steering that is used to balance the bike. If the steering is locked one can't balance. Reversed steering messes with the mind and takes a lot of focus.Fall to the left turn to the right.
What makes a bicycle stable is the fact that the center of the font wheel is ahead of the steering axis, which is inclined towards the rear. As a result a bicycle is stable even without a cyclist on it.
@@frenchimp Not quite. The self centring effect is a result of the line of steering axis is ahead of the point of contact on the road. (the trail) The forks are often raked forward slightly to reduce the trail as too much can result in tram-lining or shopping trolley shimmy.
Monorails are really hard to ride.....and really REALLY dangerous. YOU CAN'T STOP. The inertia just make the whole wheel keep rolling with you and everything in it, right into whatever obstacle you are trying to avoid. Next project please :D
Congratulations Mr Barker you have invented a new way to grind soles down. So Tom needs to add some electronics a speed sensor a variable leveling device to allow wheel to operate between +10 and - 10 degrees a rear braking/reversing wheel motor/actuator to prevent forward tumble. You will have to excuse me I can visualize it in my head but explaining it is problematical LOL Computer Guru here not a mechanical engineer Bigger LOL Good Luck with the mods
@@filonin2 In 1927 they used fuel motors and had foundries to make component parts the main thing of those monobikes was the lower center of gravity. They used heavy weights to over come the rolling problem. A lightweight bike using an electric motor needs more digital sophistication.
Use a controller from a Segway in it, it’ll self balance the wheel as you accelerate, at least then you’ll be able to just focus on side to side balance and turning Awesome build though
smaller wheel in the front on frame for braking purposes to prevent gyroscopic forces from sending the frame too far forward.. handlebars mounted at the top to control the center of gravity more efficiently. wider wheel with rounded surface will help with turning as well.
I feel like if the mono wheel's entire assembly could be 5% bigger, it could improve. So you can install something for your back to lean on, or install like a bucket seat. And the wheel itself to be either wider or accommodate an actual tire for ride comfort.
During the video I was thinking how it throws off the balance when you're having to lean to one side or the other since there's not sufficient headroom, and you'd need someplace to put your feet eventually. Second concern was addressed but Captain Hindsight told me "they should have made the special-ordered steel circle bigger because it's harder to balance when you're cramped or leaning"
To make a safe and effective monowheel, you need a 2-axis gyro stabilizer. If the gyro is strong enough to counter the wheel's momentum, then slamming on the brakes would allow you to actually stop without rolling over. The second axis would be to prevent falling sideways. You wouldn't want it too strong as you need to be able to lean in order to turn. See the videos on gyro-stabilized electric motorcycles for ideas.
I've had a thought on how to make it stop rolling forwards when you're stopping, but it may not be as straight forward to implement as I imagine it to be. What about adding a tilt sensor to the assembly with the seat and using it in conjunction with the electric motor to apply a backwards impulse to balance the seat assembly? This should (if my thinking is right) both help balance out the seat and stop you from flipping, AND apply a braking force to the wheel itself. This also could help with acceleration, by having it limit the throttle as the central seat assembly starts to tilt back. Also adding ballast on the bottom of the inside assembly could really help with all that.
I feel that increading tre diameter of the wheel it self needs a boost, for comfort reasons. Also widen the wheel it self. Make it a "fat" wheel, like the wide wheels of a bike. Makes it easier to balence and more stable when dealing with terrain.
Lower the center of gravity by lowering the seating point. OR for the current build add a weight under the seat that tracks and also has foot pegs out front, use that swingset double seat design to swing the weight when braking using your body pulling the handlebars while pushing with your feet to move the weight beneath you while engaging a braking. (where all the dialing will need to be.)
Needs more mass at the bottom to keep you stable without turning inside the wheel. If it was heavy and big enough to keep your feet up, you could eliminate a lot of the minor trips from dragging your feet across the ground while getting better balance.
You need wheelie shoes like the kids back in the early 00s were wearing. Skate wheel in the heel for stability, and maybe some cemented on tire rubber in the toe area for the brakes / steering.
what about small and close mounted stabilsers to the inner frame fore and aft to prevent roll of the inner cage, could have them on a suspension which allows for left right steering but has zero forward or backwards motion, or slightly offset at the rear with a higher angle for that fun wheelie feeling.
I feel like this is what Heelys are made for. Brakes and stability all in one convenient package.
Yeah, you beat me to it 😆
Thinking the same thing
A vote for heelies from me too, can you get them adult sized?
@@euanmcgill918 Yes, you can
I was coming on to say the same also. They make adult sizes and can be shipped any where. Mine are a pink pair. (Ladies 9)
I imagine emergency-stopping with it: smacks into the back of a lorry, and the monobiker keeps spinning inside the wheel with legs fully extended out on each side.
what a goof
That mental image made me laugh out loud :D
Wait, but wouldn't that be safer than flying over the handlebars? I mean, if you don't consider tipping to the side
11:57 It's a statute of law that when a British person says "Morning!" to any other British person then all parties will immediately disregard anything unusual and continue about their day.
Just basic science.
Morning!
Just need a cup of tea and you'll be perfect
I watched one video we’re greeting people in London was very distressing to the londoners
That's... Actually very true. At least in most cases. It's not gonna help you if you're caught with a dead body or something but otherwise it's like some sort of mystical incantation to us.
1:42 Im a metal fabricator.
I dont watch this channel for tips and tricks, i watch it for entertainment.
So keep up the good work 😉❤️
My tips for you?
1. Gloves. ALWAYS wear gloves, and tuck in any loose shirt material when using an angle grinder. toull thank me later when you DON'T lose a finger or gouge your abdomen after it binds and kicks around at the speed of light.
2. Clamp EVERYTHING. this not onoy keeps the material in place, removing one of the many variables involved with cutting metal, but also gives the tools more constant contact with the material, making it cut easier with less force. Overall improving safety, efficiency, and reliability of your cuts.
If i think of more as i keep watching I'll put them here ❤
Can't help feeling if it was 3" taller inside, you'd get your head in and keep your weight central as opposed to off to the side, which might give you more control/balance - the option to shift your weight has got to be a good thing, right?
Yeah, I think your right, he needs more head room, so he needs to be Lower...
the straight cross bar that the saddle is on needs to come down to another support wheel,
which would lower the whole set-ups centre of gravity, and
also give more head room. Then he can lean more for better balance.
Also, rather than going pure monowheel with his feet up, he could get some heelys shoes, the ones with the hidden wheels in the heels, and just keep his feet down for stability.
I was hoping someone said this.
I guess that he can lower the seat a bit to make room.
I was about to comment this
@@ThisIsMe3699 would need to redesign the subframe to lower, I would actually try a triangular subframe with the point at the top to increase headroom
"Im not basing my design of the south park one."
My disappointment is immeasurable and my day is ruined..
Between your day and his parts, something had to be ruined.
Sounds like the most efficient model though, stability from front to back. Shame...
Day? Try Year.
I am like #666
Maybe he based it off of one of these: ua-cam.com/video/GF0rqlgdaHM/v-deo.html
I feel that if you'd just add a little swaying part at the front with a single smaller wheel, functioning as stabilizer, foot rest, and steering, it would actually work decently well
So a modernised penny farthing
It would . . . and also stop being a monocycle.
I would add a pendulum and training wheels
Yeah you could also improve it by adding a frame and making the wheels the same size then adding some handlebars
or maybe like for skying, the thing it could help
I ride a lot of different bikes, and I feel like a wider wheel/tread would go a long way to making the thing more stable, in addition to the positioning changes others have mentioned. But that’s an awesome start! I’m digging this project!
While the goal of the monowheel is to be contained within the monowheel, yours is a bit... small... but since you've got it build, a step by step suggestion as a jumping off point for mark 2!
Step 1. Extend the foot rests in front of the monowheel with a comfortably wide stance. The forward weight will reduce forward rise from acceleration. Adjust weight accordingly (but do not completely negate rise.) The forward, wide stance will allow you far greater balance, and thus turning.
Step 2. Add a wheel on the foot rests, but with high resistance, potentially a breaking system. This can be a single wheel in the center or, more preferrably, two small wheels on the outer edge for stable and safe breaking. These wheels will not touch during actual driving, maintaining a "monowheel" status.
Step 3: HELMET. You got a light bonk in the video, but that could have been quite a bit worse. Invest in a full face DOT helmet if you're going to leave massive bolts at temple level.
Are extra wheels for breaking/safety cheating? Do the wheels on a jet make it any less of a jet?
If you are willing to rebuild the inner body... lower the bottom rail for a more "cruiser" feel. Lower center of gravity should help with canting forward and back to offer more head clearance. You got brained because you couldn't shift weight to the other side with no foot brace and the risk of a lobotomy by ducking through the tiny gap.
yes
Sounds like working smarter and safer when finished
4. Develope a feedback loop with a gyro that varies throttle/braking to control the internal mass. A larger wheel with the person close to the bottom will give more authority to resist internal rotation.
I agree with this except DOT is the worst helmet standard. Never set that as your baseline, it’s essentially like taping a popcorn bowl to your head and calling it safe. There are now like three different helmet standards of increasing difficulty to obtain past DOT.
This Sounds like Chat GPT sugesstions
This is fantastic :) I built a monowheel a few years ago, although mine was noisy and gas-powered with chains to gear it down. I much prefer your powertrain. I was nodding as you were saying you can’t let off when you start to panic haha. Mine was very heavy (around 100kg), I wonder if that made it easier to ride. I could occasionally go a mile or more with my feet off the ground, at 15-20 mph. It hasn’t run in a long time but I always wanted to build another.
I’m pleased you share my fear 😆 good luck if you decide to remake it :)
tried it Inline skates 🤔
@@nana-nr6xr not really an invention lol, also would be a safety risk. He does need to keep balanced centrally though, but the wheel is a bit too small
I think the problem is that when you go to brake, you ought to brake the big wheel and not the small wheel that is driving the large wheel. That way when you brake, it makes you lean backwards and not forwards.
Attaching your head to an unpredictable machine seems like a bad idea somehow
You need to add a foot rest that is out in front of the mono wheel plus a little more weight in the front. Part of the problem you're having is that there isn't enough weight in the front. On top of that without a solid foot rest it's hard for your body to balance and control. I'd also recommend making the rollers out of a different material, but I think you know that.
would also say sitting lower, and a bit more center wouldnt hurt either
if you had more weight on the front it would be unbalanced when slowing down so maybe a counter weight in the centre?
I’d also recommend lowering your center of gravity by lowering the seat. This will inherently increase your stability.
Also grease of some kind of lube on the rollers.
It’s the mounting point for his seat. Needs to come forward more, which would require a bigger wheel
I know this a year old video, but after reading several comments, I find it odd that I didn't notice any recommendations of a backrest of sorts. It would help keep the center portion from acting like a pendulum and maybe help stabilize the rider as well. Forward foot pegs, with landing gear wheels to help with sudden stop anti-roll, would also be a good add. Cool concept!
Always wear a helmet when doing your projects please. I remember once a guy from India that was building a compact helicopter and the propeller malfunction and hit his head, he died and was only 29… sad story
Es cierto, pero consideremos que eso era un helicóptero, no una bicicleta que no supera los 3 m/s xd
thats india lmao
I don't think a helmet will stop a spinning blade. There made for taking blunt force not slashing.
@@Lord_Xonaz it wouldn't stop it, but could definitely introduce an element of deflection
@@myenglishisbadpleasecorrec5446 exelente ingles mi estimado
Maybe instead of putting your feet up you could wear roller blades instead? Brilliant build by all means
Can you still a monowheel if it activity utilizes 9 wheels though?
🤣
I wonder how many miles per shoe he gets with this ?
Use heelies, can get some sick SpongeBob ones
@@BootlegHuman oh yes
Glad you find a way to make less intrusive controls than Mr. Garrison's models
Could not believe I had to scroll this far to get the first reference to south park lol.
@@gregson99 same, it immediately made me think of south park 😭😭
came here for this
Rule of thumb, when you cut let the other end free hang, it won't cause pressure and just fall, if you don't you can get tool kickback and get injured, be safe . . .🎉😊
Here are a few tips to improve on the design:
1. Increase the weight at the bottom. You want a low center of mass so you stop rotating inside the wheel as easily.
2. The ratio from the immer wheel to the outer wheel is way too low. Put on a bigger wheel, which will prevent you further from rotating inside of the wheel, due to the higher energy required from the motor to spin the outer wheel but it will also increase your top speed.
3. Put some foot pegs further out. You are way too cramped in there and it will also make you spin less inside the wheel, due to you being stretched out further.
I really should read the comments before writing the same thing someone else says.
also could add those little helper wheels
4. Add an automatic gyroscopic balance systems to keep it from falling to the side. I've seen videos where people built monowheels that self-balance and basically stand on their own.
He should add a back rest so he could have more points of contact
I was thinking a support arm under the seat to bear the weight of the rider and have another point of connection to the wheel
Now, you only need a General Grevious cosplay
And bronchitis
It's amazing ! Well done ! You could maybe increase the wheel diameter and lower the centre of mass to make it easier to handle ?
Yup, he can't even hold his head up straight and he's forced to sit leaning to one side.
I think making a penta shaped frame will lower his mass and increase head room allowing for a lower center of gravity and keeping the weight distribution centered.
Overall looks like a very fun project though.
@@SurelyLightFoot yes, that would, however it would create new joints and therefore potential points of failure.
A counterweight hung under the seat would help lower the center of mass increasing the stability. One possible option is to use sealed lead acid batteries as the counterweight with a DC to DC charger suitable for the task.
You need to lower the seat, this will give you a lower center of gravity and more control, or if you use a gyro as ballast it will stabilize it!
That looks like a fun build.
I have seen many of these mono wheels and they all have one thing in common, the seat is very low for better stabilization. Your seat may be too high and is the reason you are having trouble balancing the monowheel while driving. Lower the seat, and you should have much better control.
the balance Issue results from the simple fact, thast the bike ist far too small, and so he has to lean out to one side constantly.
the center of mass is not the problem, actually it would be better, if the seat was even higher because the angular momentum acting against the gyroascopic effect would be lower.
@@cnschu
Look at other videos of people riding these. They all have a common factor... The seat is lower. In Physics, this means lowering the center of gravity.
@@cnschu That would be true if the point where the wheel tips over is himself (aka the center of mass) but that would only happen in the air or in space, here the wheel is bound to tip over in the point where it makes contact to the ground so bringing the center of mass closer to that point makes it so that the gyroscopic effect can help stabilize it more effectively because it sort of has more leverage so to speak
just a super tiny note here: when cutting with the sawz all, make sure the metal foot is pressed firmly against the thing your cutting. this helps move the machine make up again and the weight of the unit helps move it back up again, you shouldn't have to apply much force at all just hold it in place as it does the work
what is it with americans and using brand names for everything? it's a reciprocating saw, Sawzall is just one type of many
Exactly! I hate that especially for “Sheetrock”!
Can't wait for someone to make a duel runner from Yu-Gi-Oh
Things that I think would improve stability:
1. Larger diameter with you sitting lower to the ground relative to the total diameter
2. Actual tires that are inflatable on the outside
3. Wider/fatter tires with a curved profile (ala bicycle/motorbike)
Counter-intuitively, I think sitting closer to the ground might make things worse. Part of the thing that makes a bike easy to stabilise is the weight that you can shift (i.e. your body) has a larger moment arm around the pivot (i.e. where the wheels touch the ground) than the rest of the bike. The difficulty is that you do want the inner ring to be bottom weighted because otherwise you risk spinning around as nearly seen a couple of times in this video. I think what you really need is a silly heavy weight attached at the bottom of the inner ring, so close to the ground that it has barely any moment, but a relatively central riding position.
@@Chaddledee Best fix he can easily apply is fill the metal pipe with weight to increase angular momentum and thus stability. As for braking you would need either your feet or some sort of assist wheels that come down when you brake. Not an ideal solution but there is a reason why monowheels are only built in some curious hobbyists sheds
All of this and how about a board computer that guarantees your horizontal position all the time?
Just went down the rabbit hole of seeing how other people have approached monowheels - and I was surprised that seemingly nobody has come up with a better answer to steer and/or stop these things or make them even a little bit more stable. Seems like a fun project though - can't wait to see where this ends up.
I think the reason most of the reason few people build monowheels is because of the "gerbiling" i.e. spinning backwards when breaking which afaik is simply a problem of the inherit physics of these vehicles. Which is a shame as they're really cool.
My idea was to use flywheels to catch the momentum so stopping is easier. Also a monowheel is not verry stable because you can't steer it. If you look at a bike you'll see that the front wheel wil turn if you angle the bike. I think this problem could also be fixed with a flywheel. This time to use it to create the "steering momentum".
Perhaps there could be a box of flywheels for momentum storage; spin up a flywheel before you start driving and when braking that flywheel could be braked hard to dump its opposite momentum into the vehicle, thus counteracting the undesired spin. Pairs of flywheels on the other axes of freedom could *maybe* offer some stability there; dump some momentum to effect the desired reaction in a pinch.
Maybe go crazy with not just a fixed flywheel but a set of Control Moment Gyroscopes with axes that can be turned as well, if they can be made fit? That however sounds way too bulky for a single person vehicle....
Why aren't PID loops used for breaking? The same way drones stay leveled at the horizon.
@@oliverer3 just put another tiny wheel in front and behind it
Use the shoes with the wheels on the heels. I don’t remember what they are called. But they would be great for this because the wheels would just roll along like training wheels for a bike, it keeps it stable while not scraping anything.
it is wheelies shoes, though with how the wheel doesn't have stabilizer and he is not used to it yet, his feets are basically act as brake at this point.
@@shikniwho7215 ugh. No. They are heelys
It’s kinda a lot to think about but you need to add some kind of gyroscope to sort out balancing plus the wheel is fixed where as others move and sway to allow for turning and balance
Nice work. I think it would be easier to ride if you added a lot of ballast low down under your seat. That would stop it tipping forward when you brake, and probably make it easier to stay upright too. I hope you make a part 2 of this video with a few tweaks to the design because this is so close to being *almost* a practical vehicle ;)
It would still be unstable, but having a lower center of gravity would allow for *some* acceleration without it wanting to rotate the driver along with the wheel when the brakes are applied.
Try training wheels!
Would help but not much. It needs a powerful gyro attached to the seat. Vertical axis, 2 flywheels rotating in opposite directions.Only this would make it possible to properly brake, accelarate and move upheel
"Im not basing my desing of the south park one"
*We were on the verge of greatness, we were this close.
id love to see a part two! definitely curious to see if lowering the seat bar, replacing the PLA bearings, and other improvements could make it a more stable ride. also want to see you order some heelies for when you use your legs to stabilize.
I don't know much about engineering nor mechanics, but I feel like using the same system that stabilises a hover board or segway platform for this mono wheel would help a lot. Also, I think incorporating weight to the front would help.
That thing is surprisingly nippy for only being powered by a chinese scooter motor. An inbuilt gyroscope (as hinted to in the design of the South Park monowheels) would probably work wonders for making it ridable by reducing the number of axis you have to worry about.
Great stuff!
That's how the segeway type ones do it.
"chinese scooter motor" Like there's any other kind 😂
@@b5a5m5 yeah even QS motors are "Chinese motors"
Should not be needed (gyro) - if small ones can ride it, so could Sam with a little training. An old vid of this driven by 4-5 year old kid: ua-cam.com/video/GF0rqlgdaHM/v-deo.html
🤓
Edit: The South Park 'IT' bike - epic 👍😂🤣
Every single scooter motor is a chinese scooter motor mate
Use a flywheel with a controller for stabilization by countering the unwanted angular momentum by spinning up the flywheel.
No idea how practical it would be, how difficult to implement and where it's limit would be of what "leaning" angle it would be able to recover
But maybe give it a try. Gyroscopes and angular Momentum will always be fun :)
I cant find the video, but there was a video from a Japanese show where they put masters and technology to compete. In one episode they has a master bike builder and a technology team with the challenge of gliding with a bicycle on a narrow path without hands. The technology team put a controlled flywheel on the back of their bike but the implementation failed since the rider also instinctively corrected their balance fighting the flywheel.
Ah I found it! its a show called "Supreme Skills! 2016x11 The Super-stable Bicycle".
@@Enginehearth I can't find the video but I suspect that the gyroscope is acting to slowly.
A bike is also different from a mono wheel in that is has active steering controls. When installing a gyro scope for stability on a mono wheel I would suggest using it for steering as well. The fly wheel is trying to keep the monowheel along a certain axis, when steering, this axis should slightly lean towards the desired steering direction.
Not sure it would work but would love to see them give it a try
First thing he needs is a footrest.
@@Enginehearth I suspect it didnt fail because of countering the human, but maybe because of the counter-intuitive way that steering a bike works. You cannot just lean the bicycle to the left to counter a movement to the right, actually, this will have the opposite effect. When you turn, you push your steering wheel in the opposite direction, which increases friction on the opposite side of the tire, which makes a momentum which makes the bike turn.
So to turn, you first steer in the opposite direction, before the lean angle increases and you 'switch' direction (rather you go to an almost neutral steering angle).
I am not sure how this would work for a monowheel though, as the steering isn't done in the same fashion.
I lost it when you rode by those people and cheerfully said “Morning!”
Ever notice that no rocket scientist ever flew in any rocket they designed?
They always find some balls out hero types for the testing.
*Girlfriend sees the Hello Kitty bike on the wall*
Girlfriend: "Oh it's your daughter's bike? How cute!"
Sam: "Nah it's mine. I didn't have the heart to cut it so i kept it because of sentimental value."
Girlfriend: 👁👄👁
Awesome!
Dich hätte ich hier nicht erwartet 😹
Das hat mich direkt an „it“, mr garrisons Gefährt, aus southpark erinnert.
- was ist ‚es‘?
und wann kann man ‚es‘ kaufen? :D
This is very exciting. If you do a version 2, take advantage of your friend's shop and turn some wheels out of delrin or something for the idlers. Consider using contact cement for the tires. If it's in your budget, a wheel large enough that you don't have to duck under while riding might work better. Fly safe!
This is awesome! Great job documenting the whole process! I do have 2 bits of critiques if you want them. If you don’t, read no further: 1. Add a little bit of background music, the silence was a bit eerie. 2. Add two small wheels to the front so they don’t touch while riding but if you brake, it’ll rotate forward where the two wheels will then contact the ground, stabilizing you side to side and front to back while you slow down
Friendly safety note: grinding galvanized steel is just as bad as welding it. You were probably fine, being outside and not doing much of it. But I made that mistake once and ended up with some nasty metal fume fever.
I got some surprising (to me) symptoms and all I did was cut galvanized pipe, drill a couple small holes, and bend the pipe with a pipe bender. I did it outdoors and had been holding the pipe with gloveless hands and I think a lot of my exposure was due to skin contact with pipe
@@julianbrelsford normaly you shoulnd have aby problems as long as you dont breathe it in ....
Skin contact should not do anything
Considering the fact that you broke the first trampoline wheel, there’s no excuse for not finding a wheel with the proper diameter to fit yourself inside…
Literally would only have had to lengthen the inside stabilizer rods.
putting a little anti-"wheely" bar on the back might be good. spring loaded or something with a small wheel itself to roll about. also put on some heelys lol
... and a "eileehw" bar on the front - that's "wheelie" spelled backwards, as it would be to do the opposite thing.
A monowheel with an extra wheel isn't a monawheel my friend
@@DownhillAllTheWay I think technically they’re called “stoppies” but I like “seileehw” more.
@@simonbolhuis4441 what about an anti roll skid plate?
I was gonna mention heelies. Glad I wasn't the only one.
suggestions: instead of just rolling it forward, you may want a controller so the motor tries to keep interior section upright, like one of those hoverboards. And then you may want a wider wheel so side-to-side balancing is easier.
Instead of a controller, you’d want to use a gyroscope so that you can adjust for speed independently of the system. If not, then the process of braking quickly may break the system keep you up causing you to flip over.
7:33 chop those long bolt-ends off to prevent personal injury when you fall off !! they are right at your eye-level . well done Sam thanks for sharing
This was my thought too! So close to impaling himself and it made me nervous as all get out. Even just reversing the bolts the other way if you have a tendency to only look out one side of the wheel.
Hand tool tip: With the reciprocating saw, hold the plate that you slide the blade into, flush up against the material you are cutting. Do not pull it back from/away from the object you are cutting, to the point that it is freely sawing into the material while you hold it in mid air. If you leave/hold the plate laying up against the material you are cutting, you take the strain of having to hold the saw still (from jerking back and forth in your hands if the blade catches wrong while cutting through the material) off of yourself and let the saw do what it was designed to do the best way it can. Like how you operate a chainsaw, you set those metal teeth at the back end of the blade up against the wood, and then "wiggle" the blade through the tree using the teeth as your pivot point. You can break wrists/fingers/arms etc when you dont keep the saw butted up against the material you are cutting, and then try to hold it in space yourself.
Could you add more mass low down so that the part you sit on wants to stay planted more? Like a keel on a ship. This would also lower your cg and I think help with balance as well.
Yep, the lower you can get the CG, the less prone these are to 'roll over', either when accelerating or braking. Though it's always going to be a concern
It works shockingly well! I wouldn’t have expected it to be as easy to control. I think that if you were to add some weight below the seat it might help with the problem of the frame wanting to spin around when letting off the throttle. Still, that’s only my speculation. Nice build!
No thats a pretty solid intuition. I'd put a serious chunk of weight under, and slightly to the back to counteract the small frame pushing the rider forward. The bigger, and safer, monowheels usually have the rider leaning right back countering the mechanism urge to flip forward. Harder in this significantly smaller frame. But it could be replaced by a big chunk of lead just at the back of the seat.
Use a self balancing electric unicycle as the engine. The Mten3 would be perfect
EUC gang lol
or maybe an onewheel they are rather cheap for what they are
Or just ride an EUC instead. :D
@@garnknopf155 onewheels are incredibly expensive for what they are compared to EUCs
If you ever are intending to revisit this project at all in the future... might I offer a suggestion for inspiration?
Star Wars had an interesting approach to it with General Grievous' legged bike. Where you basically take the engine from the bike and shove it in the sidecar, so you're sitting on one side of the wheel, but can still see _under_ the inside of the rim and out the other side. Oh, and kickstand leg.
It's also safer, since you can add a counterweight system so if it loses balance, you can knock it on the side that DOESN'T have the driver. And even if it falls on the side of the driver, rollbar edges and the clearance in between the drive ring and the outer rung ensure their helmet isn't hitting too much metal and pinning the driver down.
Perhaps if it's possible to do just that; take the seat of a motorbike and shift it to the side, so you can make the engine and gyroscopic system as it needs to be. Just keep enough out of the center so you can see over the engine and under the wheel, and wear a helmet.
Yes, it's likely to be far more advanced, even before taking gyroscopic balancing into account, but perhaps with a bit of luck a smaller scale proof of concept will go far.
It might be a good idea to mount a counterweight under the seat. That would be a good place to add a large battery pack, and any other equipment you need, as well as a large block of steel or lead. I've seen some monowheels that used a petrol engine, and they mounted them at the bottom of the frame as a counterweight.
This guy!
It would’ve been easier to ride if you had a larger frame for the wheel, and also a wider tire for more room to sit and also just for better balance. But I’m not an engineer so… yeah
I think the standard monowheel breaking method is to just fall on your side. Actually breaking causes you do go in to a death spiral (as you discovered).
You could try training wheels. Instead of on the sides like a normal kids bike just put one in front and one behind the main wheel. Once you get used to that you could do the old 'raise them up a bit' trick till you get good at it.
Or maybe by programming the motor to slowly pick up speed and not stopping all the way the moment you brake and therefore get more stability when driving?
I THINK THE SEAT NEEDS TO BE MORE LIKE THE SOUTH PARK ONE
Love it :) I've been fascinated by monowheels for a couple of decades, but haven't had the where-with-all to pursue it yet. Maybe try putting the seat down a lot to move your centre of balance, and drill holes in the top, heavy steel bracket (al la racing car design), to further reduce top weight. At the moment you're quite close to the central pivot point of the contraption, so acceleration and deceleration tries to rotate every thing around you, whilst you spin in the middle. If your weight was a lot closer to the bottom, then the accel. and decel. would have to try and lift your mass upwards around the arc of the wheel, thus providing resistance that can be translated into forward and regressive motion. I think :) It's been a mental experiment in my head for years. My only concern is that when braking, your mass would shift towards the rear a bit and I'm not sure if that would de-stabilise the Monowheel. All the best with the project.
When your monowheel smashed into your head, I laughed and poured water straight down my trachea and started choking, prompting my girlfriend to try and run and save me where she ran into a chair leg and fell down on the ground.
Your machine almost claimed 3 lives so far!
Your story was solid until you said you had a girlfriend
*TRIPLE KILL*
@@evinn 💯💯🤣🤣🤣🤣🤣
😂 I'm not laughing at your pain... 😂 I'm laughing at dumb luck... 😂
@@evinnouch, your useless edge just cut me
I admit after watching a SouthPark episode with one of these before, I was curious what this guy's seat looked like. 😅
Even though other people have made mono wheels in the past, you built one with your own parts and somewhat succeeded. Maybe more weight on the bottom support could lower the point of stability ( I have no idea, just a thought ). Either way, good show. You get high points for trying. Good luck.
I was also thinking he should basically be sitting on the bottom of the ring with his feet up in front of him, would allow his weight to have more influence over the motion
Thats one ingeneous and creative design considering you didn't even have a shop to build it in. Everyone is giving you advice but I don't see anyone doing it. Too much fun !
With an added weight in the center bottom, I feel like you could up the stability considerably while also keeping it from reacting so heavily to accelerating
I love how falling off also smashes your goddamn skull in, what a nifty safety feature.
Can't feel embarassed when you are braindead! :D
As an expert in nothing, the only thing I allow myself to say is that's a gorgeous build. (Or maybe a wider surface wheel can help) And good luck with practising that.
If you put small suspension wheels for each foot, you could help steer the monowheel by pushing down with the opposite leg.
0:35 Cant wait for someone to actually make truly drivable, visually a close copy of this thing! With electronically assisted gyro for stability, drive by wire assisted steering.
Like any car, sit and drive with ease! That *will* be the coolest freaking thing in history of the universe!
It might be possible to build this by just modifying a hoverboard. The IMU could balance it standing up, and then you’d only have to worry about side to side
maybe a flywheel or counter weight to balance side to side
The motor aren't strong enough to keep something like that level
@@euctheeast3902 Yes, but the sensors and control board can send a signal to something that can handle more powerful motors. They have power, but they need control.
@@DigitalJedi yeah I just think you'd better of with an euc if you were gonna go that route you would probably be able use the stock controller and motor from an euc, I don't believe any hoverboards controller would be able to handle the voltage needed to operate such a a machine
I honestly thought this would be Tom's project first, seems like such a Tom thing to do - You did a great job tho!
I would like Colin to have a go at it. however he might replace the engine for a yet engine.
This project perfectly exemplifies how, mostly what we 3D print is the connector-y bits!
People on the side walk be like:
Oh sam is here again and his contraptions
It would be so sick if you could somehow give the frame, which you sit on, gyro stabilisation to keep it upright
Just put a spinning disk onto it.
What that needs is two much smaller wheels one in front and back a lill off the ground to stop the forward and backward pitch when pulling away or stopping, also since your weight is pressing down it slightly deforms the tube wheel directly under you between the front and back lower kick rollers so it needs a support with a kick roller directly under you but the ride will become a little harder so maybe a sort of spring loaded support there 👍, this sort of thing has potential with the right design I think
that would defeat the purpose of it being a *mono* wheel. mono = 1.
use the same systems as a self stabilizing electric unycicle.
don't put extra wheels on the bike, put them on the shoes xD
@@renookami4651 lol yeah roler skates 🤣👍
Nice!
Heelys for stabilizing, and a back support on the seat to keep it level. Maybe some skid protection and helmet..!
You need to use some cutting fluid when drilling steel, I like rapid tap but tap magic is good too (and cheaper)
3in1 gives acceptable results as well.
I feel like you could benefit from sitting lower in the monowheel. Lower center of gravity. Maybe use some self-balancing magic like in EUCs or Segways.
Oh and definitely find a way to fit in the wheel with room for safety gear and all the bells and whistles.
Keep up the good work!
You’re so underrated
A microcontroller to adjust the throttle input to account for frame rotation might help, and/or some forward foot pegs outside of the hoop with small wheels or sliders on the bottom to keep the frame from rolling when you let off the throttle. ;)
Okay PLEASE Sam see this and try it out:
What if you wore Wheelies while riding it?
Hear me out this might actually be an amazing idea. If you wear Wheelies you've effectively made your own body into a Tricycle.
You're using your own legs as both training wheels and for turning. Perfect.
Please try it and show us.
Thank you.
Upvote comment pls so he see
This is really interesting. A tip could be to make the wheel a lot bigger so that it supports and balances you a lot more, it also might be a good idea to add more structure as well.
Wonderful work I Would love to see these beautiful things in the future.💗💗💫💫
The only way this would be stable is to have a heavy enough counterweight that automatically adjusts to always ensure the center of gravity from front to back stays the same.
For breaking I suggest one or two curled up 'foots' infront of the monowheel. This way you don't topple over when you want to deeccallerate
If you increased the mass of the wheel you might get more of a gyroscopic effect so the monowheel would be more stable. This is how motorcycles are so stable, might be worth a try! :) 💕
Not only that, but the entire center of gravity needs to be lower. his center of gravity is too close to the center of the wheel. monowheel designs tend to have you sitting VERY low.
The gyroscope argument is a tired old one... bicycles don't have enough weight in their wheels to keep a person up, what keeps the person up is the continual change in direction, a cyclist is always falling, just changing which sides he's falling to so he never actually falls.
@@Metal-Possum Yes and needs an active steering system to work. Fall to the left, turn to the left etc.
What most cyclists don't realise it is the steering that is used to balance the bike. If the steering is locked one can't balance.
Reversed steering messes with the mind and takes a lot of focus.Fall to the left turn to the right.
What makes a bicycle stable is the fact that the center of the font wheel is ahead of the steering axis, which is inclined towards the rear. As a result a bicycle is stable even without a cyclist on it.
@@frenchimp Not quite. The self centring effect is a result of the line of steering axis is ahead of the point of contact on the road. (the trail)
The forks are often raked forward slightly to reduce the trail as too much can result in tram-lining or shopping trolley shimmy.
LOWER THE SEAT. Have it dip down, and not only will your center of balance be lower, but you won't have to keep your head to one side!
Agreed... his center of gravity is too high. Having a lower CG would also make acceleration and braking easier/safer.
I can safely say I know why he didn't want to offer you a job. You called his mill a drill press. That is sacrilege.
This is the droid we're looking for
Monorails are really hard to ride.....and really REALLY dangerous. YOU CAN'T STOP. The inertia just make the whole wheel keep rolling with you and everything in it, right into whatever obstacle you are trying to avoid. Next project please :D
Congratulations Mr Barker you have invented a new way to grind soles down. So Tom needs to add some electronics a speed sensor a variable leveling device to allow wheel to operate between +10 and - 10 degrees a rear braking/reversing wheel motor/actuator to prevent forward tumble. You will have to excuse me I can visualize it in my head but explaining it is problematical LOL Computer Guru here not a mechanical engineer Bigger LOL Good Luck with the mods
He could wear roller skates whilst driving it.
rick james yeah I thought so as well since he kept catching his feet awkwardly, roller blades or skis would also work
I dunno, they figured out how to make this work in 1927, shouldn't need many electronics. ua-cam.com/video/GF0rqlgdaHM/v-deo.html
@@filonin2 In 1927 they used fuel motors and had foundries to make component parts the main thing of those monobikes was the lower center of gravity. They used heavy weights to over come the rolling problem. A lightweight bike using an electric motor needs more digital sophistication.
I feel like a pair of heelys would go well with this
I came here to say exactly that. Or getting a sponsorship with Adidas because you'll run out of sneakers really fast!
Use a controller from a Segway in it, it’ll self balance the wheel as you accelerate, at least then you’ll be able to just focus on side to side balance and turning
Awesome build though
Exactly my thought! For side to side balance, he could probably make use of a gyro as well.
smaller wheel in the front on frame for braking purposes to prevent gyroscopic forces from sending the frame too far forward.. handlebars mounted at the top to control the center of gravity more efficiently. wider wheel with rounded surface will help with turning as well.
"Time to re-*tire* for the evening" Heh, heh, heh.
I feel like if the mono wheel's entire assembly could be 5% bigger, it could improve. So you can install something for your back to lean on, or install like a bucket seat. And the wheel itself to be either wider or accommodate an actual tire for ride comfort.
During the video I was thinking how it throws off the balance when you're having to lean to one side or the other since there's not sufficient headroom, and you'd need someplace to put your feet eventually. Second concern was addressed but Captain Hindsight told me "they should have made the special-ordered steel circle bigger because it's harder to balance when you're cramped or leaning"
To make a safe and effective monowheel, you need a 2-axis gyro stabilizer. If the gyro is strong enough to counter the wheel's momentum, then slamming on the brakes would allow you to actually stop without rolling over. The second axis would be to prevent falling sideways. You wouldn't want it too strong as you need to be able to lean in order to turn.
See the videos on gyro-stabilized electric motorcycles for ideas.
Southpark got the design almost 100% exact on its first try
I've had a thought on how to make it stop rolling forwards when you're stopping, but it may not be as straight forward to implement as I imagine it to be.
What about adding a tilt sensor to the assembly with the seat and using it in conjunction with the electric motor to apply a backwards impulse to balance the seat assembly?
This should (if my thinking is right) both help balance out the seat and stop you from flipping, AND apply a braking force to the wheel itself.
This also could help with acceleration, by having it limit the throttle as the central seat assembly starts to tilt back.
Also adding ballast on the bottom of the inside assembly could really help with all that.
A bigger rotating wheel in the middle and some support wheels connecting to the seat would make more secure, maybe add some more speed to it?
I feel that increading tre diameter of the wheel it self needs a boost, for comfort reasons. Also widen the wheel it self. Make it a "fat" wheel, like the wide wheels of a bike. Makes it easier to balence and more stable when dealing with terrain.
Very funny and cool! :D I was totally laughingf my ass off when you took the Monowheel out into the public. So funny! xD
Lower the center of gravity by lowering the seating point. OR for the current build add a weight under the seat that tracks and also has foot pegs out front, use that swingset double seat design to swing the weight when braking using your body pulling the handlebars while pushing with your feet to move the weight beneath you while engaging a braking. (where all the dialing will need to be.)
Right Sam make another and get dom to ride it but weld them together so they roll as one but cut the long bolts down 😂
Needs more mass at the bottom to keep you stable without turning inside the wheel. If it was heavy and big enough to keep your feet up, you could eliminate a lot of the minor trips from dragging your feet across the ground while getting better balance.
You need wheelie shoes like the kids back in the early 00s were wearing. Skate wheel in the heel for stability, and maybe some cemented on tire rubber in the toe area for the brakes / steering.
what about small and close mounted stabilsers to the inner frame fore and aft to prevent roll of the inner cage, could have them on a suspension which allows for left right steering but has zero forward or backwards motion, or slightly offset at the rear with a higher angle for that fun wheelie feeling.