If you wish to make this concept work, you need to build a rotary engine, (radial engine with rotating case, not Wankel) inside the big wheel. This with caster on the steering should keep it straight and steady. The problem is there is no pull on the big wheel, so it doesn't have any gyro force to keep it up and rolling. The lack of caster makes every steering input upsetting the chassis, rather than steering the wheel. Also to make it more stable, put the steering into the back wheel and make the back wheel a tad wider. Not two wheels, just a bit wider single that steers. This combination with a pulling front big wheel allows you to ride it as a bike, tilting it to corner, and save it with counter steering the rear wheel and adding more torque to the engine.
I think on of the biggest problemsrelated to the stability is the fork trail and offset, feels like it should be quite a lot more so it has more passive stability, the wikipedia page on bicycle and motorcycle geometry has a lot of good information on it
I also wonder what bars instead of a wheel would do. Part of handlebars function is to make you physically move your body (mass) such that the bike will lean, which is how bikes actually steer.
Yeah I'd be interested in seeing how bars might change the handling or lack thereof. I felt like I wasn't going fast enough or overcorrection on the steering
@@PatonMachines yo theres a youtube channel called grind hard plumping co who build all sorts of crazy vehicles. one of them is the monster bike. not sure if you can get into contact with them but their bike and the job they did to it is solid, pretty sure they could give some tipps. (im also pretty sure they give tipps in the videos were they build it but im not sure anymore) good luck!
Anyone with even the most rudimentary understanding of physics could understand that this concept would never work. Even regular tractors tip all the time. Fields are uneven and unpredictable. Who knew? Looks cool, though.
A penny farthing only works because the big wheel is the driven one. You need to find a way to drive and articulate the big wheel simultaneously, because of the torque ratios caused by the sizes of the wheels, this machine will always destroy the drive system if you attempt to drive the rear wheel. It might work out with your current design if you were to make it into a tricycle with 2 small wheels in the back and a differential axle between them.
Three wheels would work but be less cool. It looks like you just need a bunch more steering rake to help with the speed wobbles, and to refine your drive system to reliably apply power to keep the speed up. Also, there is an old episode of Mythbusters where they tried to build a rudimentary motorcycle from a Citroen 2CV, and couldn't get it to balance until they switched from a steering wheel to handlebars. I didn't want to say anything thus far because the steering wheel is way cool and I don't understand why it would make a difference, but it's something to think about.
It looks like there is too much mass too high up. It seems fine in a straight line, but whenever you turn, it tips over. Bicycles and motorcycles turn my leaning, not by steering. Steering just makes the bike "fall" to one side in a controlled manner. If you watch a motorcycle or bicycle in slo-mo, they turn the front wheel opposite the direction they want to turn at first. Try a slight counter-steer to initiate a lean and straighten the wheel out and see what that does for you. You might need to limit the steering radius by a lot though; It might just be too unstable no matter what with the center of mass so high.
@@hiredgoon4269 I had to go all out on this test otherwise I would have kept putting it off but next time will a have proper "no tip over" device fitted so I don't need to put all my thinking into steering. There was a lot going on 😂
If you could make the big wheel a gyroscope it would self balance a lot better. Just build a heavy wheel always rotating fast inside your big wheel easy.
@@PatonMachines maybe some electric bike hub on a weight? Not an easy solution. This thing looks so sweet it would be amazing if it worked well even slow.
I think you should consider a more curved type of tire on the front. If you look a bike and motorcycle tires they're have a much more rounded transition between the tread and the side wall (of the tire that is).
You would seriously hurt your legs or toes especially with the shifter poking out. You might want a bumper or something on the side to prevent it from fully hitting the ground and breaking your leg. And steel toed boots in case the shifter or foot peg falls on your toes. Have you considered if you would benefit from a very heavy flywheel weight? That might be one of the easiest solutions to get it running well without too much work. Just be sure to put a proper cover on it and don’t wear loose clothes. You don’t want to get caught in that.
Yeah I had steel cap boots and long sleeve to protect from the sharp steel I built it out of. I plan on fitting something to stop it falling over so I can work on the mechanical and steering without the falling over part 😂
I think your builds are awesome. I think you just lack a bit of the videoedditing skills. Maybe try making your videos a bit more like Grind Hard Plumbing Co. But definitely dont stop making these awesome projects.
The cows all watching intently while you start it up, first pull and they all take a single step back.
They were so intrigued!
Most people would not agree with this fact, but the preferred outcome of any test is a failure. Congrats of your field test.
Thanks! Yeah your right, this was a good outcome. Found things to work on and didn't hurt myself 😂
when I first saw the thumbnail I was like wtf and instantly clicked 🤣🤣🤣
I want this to defy my rudimentary understanding of physics! The whimsical engineering is inspiring ❤
It felt like riding a bike for the first time and having the wobbles 😂
I hope the guys from Grind Hard Plumbing Co have seen and enjoyed this.
If you wish to make this concept work, you need to build a rotary engine, (radial engine with rotating case, not Wankel) inside the big wheel. This with caster on the steering should keep it straight and steady. The problem is there is no pull on the big wheel, so it doesn't have any gyro force to keep it up and rolling. The lack of caster makes every steering input upsetting the chassis, rather than steering the wheel. Also to make it more stable, put the steering into the back wheel and make the back wheel a tad wider. Not two wheels, just a bit wider single that steers. This combination with a pulling front big wheel allows you to ride it as a bike, tilting it to corner, and save it with counter steering the rear wheel and adding more torque to the engine.
It looks so nice and promising. Wish it can run well! Please dont stop! This thing should visit farm equipment fair! 🤩
I'm definitely not giving up!
I think on of the biggest problemsrelated to the stability is the fork trail and offset, feels like it should be quite a lot more so it has more passive stability, the wikipedia page on bicycle and motorcycle geometry has a lot of good information on it
I also wonder what bars instead of a wheel would do. Part of handlebars function is to make you physically move your body (mass) such that the bike will lean, which is how bikes actually steer.
Yeah there's lots going on. Turns out it's not "just like riding a bike" 😂
Yeah I'd be interested in seeing how bars might change the handling or lack thereof. I felt like I wasn't going fast enough or overcorrection on the steering
I copied the geometry of a penny farthing highwheel as that was the closest thing that I have seen being ridden
@@PatonMachines yo theres a youtube channel called grind hard plumping co who build all sorts of crazy vehicles. one of them is the monster bike. not sure if you can get into contact with them but their bike and the job they did to it is solid, pretty sure they could give some tipps. (im also pretty sure they give tipps in the videos were they build it but im not sure anymore) good luck!
ive been wanting to watch channel like this for years ive finnaly found it!
Anyone with even the most rudimentary understanding of physics could understand that this concept would never work. Even regular tractors tip all the time. Fields are uneven and unpredictable. Who knew?
Looks cool, though.
the edges od the tires cant be square. they have to be rounded to stabilise
Yep. The tire radius is what steers a motorcycle
That's one of the next modifications. I had always planned on that but wanted to run it square first.
The best course of action is probably to replace that belt with a chain. It’s broken twice from what I can tell
Talked to you about this at speedway, good to see the video out
Yeah it was a mental thing to try and control! 😂
Paton Machines would thrive in the Mad Max universe
How good would that be! 😁
A wider front wheel with a grass tread tyre .may be better
It's quite a lot of machine to stop with your leg lol. I would need three wheels for sure.
Yeah after zooming in and slowing down that last drop, I saw how close I came to a broken leg! 😬
A penny farthing only works because the big wheel is the driven one. You need to find a way to drive and articulate the big wheel simultaneously, because of the torque ratios caused by the sizes of the wheels, this machine will always destroy the drive system if you attempt to drive the rear wheel. It might work out with your current design if you were to make it into a tricycle with 2 small wheels in the back and a differential axle between them.
Congrats!!
I think next is to take a step back and add some safety so can get the mechanical parts working properly before trying to learn to control it
Three wheels would work but be less cool. It looks like you just need a bunch more steering rake to help with the speed wobbles, and to refine your drive system to reliably apply power to keep the speed up.
Also, there is an old episode of Mythbusters where they tried to build a rudimentary motorcycle from a Citroen 2CV, and couldn't get it to balance until they switched from a steering wheel to handlebars. I didn't want to say anything thus far because the steering wheel is way cool and I don't understand why it would make a difference, but it's something to think about.
Stretch the frame quite a bit, I feel like as soon as that front wheel turns, it's going to try to pull the rear right off the ground?
The rear/small wheel is the drive wheel.
@@hiredgoon4269 no one said it was front wheel drive?
Would a chain belt do better than a rubber belt?
It probably would. That and a centrifugal clutch!
It looks like there is too much mass too high up. It seems fine in a straight line, but whenever you turn, it tips over. Bicycles and motorcycles turn my leaning, not by steering. Steering just makes the bike "fall" to one side in a controlled manner. If you watch a motorcycle or bicycle in slo-mo, they turn the front wheel opposite the direction they want to turn at first. Try a slight counter-steer to initiate a lean and straighten the wheel out and see what that does for you. You might need to limit the steering radius by a lot though; It might just be too unstable no matter what with the center of mass so high.
So what your saying is I need more speed! Both times it fell over was lack of speed. First one the belt came off and last one I ran out of paddock. 😁
@@PatonMachines That would certainly help haha. Just don't crash xD
@@hiredgoon4269 I had to go all out on this test otherwise I would have kept putting it off but next time will a have proper "no tip over" device fitted so I don't need to put all my thinking into steering. There was a lot going on 😂
@@PatonMachines Hell yeah, brother. Can't wait to see it.
😅 it's been such a long journey to get it too this field, and so happy too finally seeing you riding it man! Congratulations!!!! 👏 👏 👏 👏
Yes it's been a VERY long journey to get here! Good to take a step backwards to add safety and try again 😁
@PatonMachines I'm excited too see this really Rollin!!!!!
That needs a much more powerful engine to be able to get the speed up quicker.
Yeah how good would this be doing burnouts! 😁
If you could make the big wheel a gyroscope it would self balance a lot better. Just build a heavy wheel always rotating fast inside your big wheel easy.
That's an idea 😁
@@PatonMachines maybe some electric bike hub on a weight? Not an easy solution. This thing looks so sweet it would be amazing if it worked well even slow.
your front tire is on backwards
Yeah I've learnt that recently but I think that's the least of my worries 😂
Undriven tyres apparently have more flotation when running in reverse.
3 wheels would be good 👍
With 2 big ones at the front
You've got the captivated audience of the cows 😅
Is it better to call this tractercycle
I think you should consider a more curved type of tire on the front. If you look a bike and motorcycle tires they're have a much more rounded transition between the tread and the side wall (of the tire that is).
Yeah I had always considered shaving the sides but wanted to try it out first 😁
😅 sucks seeing it topple over, but man it looks so cool when it's cruising!!!
It was always going to topple 😂
@PatonMachines welp, the next try will be even better whohoooooo!!!! 💪
It handled the falls like a trooper! No obvious damage 😁
You would seriously hurt your legs or toes especially with the shifter poking out. You might want a bumper or something on the side to prevent it from fully hitting the ground and breaking your leg.
And steel toed boots in case the shifter or foot peg falls on your toes.
Have you considered if you would benefit from a very heavy flywheel weight? That might be one of the easiest solutions to get it running well without too much work. Just be sure to put a proper cover on it and don’t wear loose clothes. You don’t want to get caught in that.
Yeah I had steel cap boots and long sleeve to protect from the sharp steel I built it out of. I plan on fitting something to stop it falling over so I can work on the mechanical and steering without the falling over part 😂
Hell yeah man!
I think your builds are awesome. I think you just lack a bit of the videoedditing skills. Maybe try making your videos a bit more like Grind Hard Plumbing Co. But definitely dont stop making these awesome projects.
Thanks! Yeah I do my best to try and capture everything but I'm no GrindHard Edwin.
Little tiny belt, all that weight...fun project though! There's a reason no one makes penny farthing bikes anymore, lol!
I'll keep working on it 😁
Awesome
Penny Farming
First