50cc Two Stroke Record Attempt Bonneville 2024 P1
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- Опубліковано 30 вер 2024
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You could try a flange and spring retention system for the exhaust to reduce vibration transmitted to the pipe, it's the way the race bikes do it, solid pipes always crack.
I was thinking the same, but also if mounted on springs perhaps they could rig up a lever and cable to pull the pipe out of the exhaust port a bit to help that initial pick up problem.
Use the ball joint system with spring clamp, separate 2 part ball joints are for sale from Rotax to weld on the flange and the pipe, hook up with springs and the cracking must be solved as this allows for much more flexing and moving. Also very easy to swap pipes without risking your studs.
@@Tom-Lahaye Ball joint style connections introduces a very unwanted increase in pipe area and volume which will impact exhaust performance on such a highly strung two stroke. Simple slip fit joints with spring retention have been used successfully for a very long time.
@@Tom-Lahaye I agree, I had a Rotax on a microlight ,it had exhaust springs and rubber mounts to cancel the vibrations.
I'm amazed that they went for the rigid mount pipe at all.
I'll be there running a Briggs and Stratton billet animal on a streamliner. Be fun to see who is faster!
best of luck.
I was thinking of making a 2t lawn mower engine, that would be cool :)
@@Eduardo_Espinoza Check out Cars and Cameras I tune the turbocharged 670cc Predator that we run on methanol with a Haltech ECU.
@@Eduardo_Espinozaflymo made one
@Eduardo_Espinoza Lawn Boy used to be all 2T.
They were the best cutting mowers made.
I'm not sure if they still are in business, but I am sure the EPA has had their hands into it if so..
I've watched every video since your last trip to Bonneville. Words can't describe how excited I am for this.
Same here, this is really special!
One man's dream for speed.!
And we get front row seats.
Amen
Can't believe it's been 5 years though 😂😂
Im really pleased to see you guys getting together
And building it back
Wow 🎉🎉🎉
Im in this from the start
Following up the build
And it's way more than just
Normally content for UA-cam
It's a knowledge of information for us mecanic freaks 😊😊
Thanks for sharing this with us. I love that
This is brilliant, 5 years later and the guys in the USA are still keen. Fantastic Team effort! Big up all involved 👍🍺
This just seems to be the type of people he attracts and is able to be surrounded and supported by.
There is a reason we are so obsessed with this channel.
@@miken966I love this channel because it’s no bs, it’s all non biased testing with results to show for it, and he actually reads feedback and uses other people’s experiences to learn from
This is cool, and such wonderfully nice and helpful friends you have in the USA 🙂👍
Fun adventure!
I would recommend some kind of airbox. Wind rushing sideways past a bell mouth can mess with air flow and jetting.
Good luck 👍
I used to race 2 stroke 50cc. We used springs to hold the exhaust at the cilinder port. I would love to have a quick chat with you Matt and share some stories. Thanks for the video. Really good stuff.
💯 did ur exhaust also have an expansion chamber? ❤
@@Billy-l2h of course not.... not! (wtf?)
Mount the exhaust on springs at the head (flange bolted to head, springs attached to flange). Rubber mount the chamber before the stinger. Good luck.
I remember that my dad's supervisor, who used to do 49cc 2 stroke tuning for competition engines in the late 1960-ies, told the story that after one heat they've lost at least 500 RPM due to bearing wear. They indeed casted their own cylinders. I also remember my dad (now age 86) told me the story that when one arrived at the job with a new 49cc moped,....it would be tuned by the racing bunch when you went home in the evening.....whithout you knowing!
I'll interview my dad about all this...a heap of history is getting lost quite fast! 😉
Keep up the good work, still wearing my 'Say No to Camshafts' T-shirts too!
So dammed cool. GO ALEX, and what a cool bunch of friends! Have fun, and speed will come!!!
Lifelong motorcycle tech here 36 years.I had a Yamaha YSR50 with a cylinder and cases that I ported and a full Sudco racing kit and it hit 62mph on level ground with no headwind.I used to pass cars on the hwy and they'd be like WTF?
@@JeffreyPerrault-hk6xe 1990 Honda NS50F with a 65cc kit, tuned pipe, ported, upped compression, and a bit bigger carburetor. 67 mph on a highway in Canada, but I was drafting a tanker truck to do it! Without the draft, it wouldn't run over 62 or 63, and headwinds were a killer.
I was on the pit crew for a drag racing car, a fueler. For my birthday, without me knowing, our mechanic took my 350 Honda 4 cylinder, ported and polished the heads, tuned the carbs, tweaked the valves and timing, and switched to a rear sprocket with an additional tooth. What a difference! It nearly jumped out from under me. Scared the shit out of me at first.
It's friday, i'm having a beer, and Alex just uploaded. Life is good.
Same! Made me so excited seeing a 1h long video uploaded!
My cat came home after being missing for a week
Sailed home tbe big ship from the dockyard
Today is a good day
@@Thefreakyfreek i am so happy for you! One of my cats never came home. Perhaps he's still walking to bonneville to witness alex's record attempt
hey alex. i have struggled a lot with these exhaust things, too. what helped with my mopeds is a flange and spring retention of all my exhausts. i even put springs to the muffler in the end, no broken steel anymore, no more foaming in the floatbowl and so on. so thing about it :)
Incredible! Brings back memories of trying to break 37mph in my restricted1981 suzuki er50....😊
Das konnte Simson schon 1960 in Serie 😊
Super!
Filter to garbage box! I was driving in road racing with homemade 50cc air cooled with big AL cooling. Piston 40x40 holex
Moving in the right direction.
Male Female connector held on by two springs. It's the proven way to connect a Hi RPM 2 Stroke Pipe.
Dude! You're killing it.
This channel has been a haven for my wiggly ASD brain.
(No engine talk at the dinner table apparently 😅)
Strum us a Bonneville song when u get back.
Someone please get this man a Vans sponsorship.
Surely this is off the wall!
This is gonna be good. Wish you the best luck with the endeavour
I may be completely dumb asking this but is there any possibility of running a short piece of flexible exhaust tubing like they do on cars in order to handle the vibrations? Either the woven type or the corrugated type.
2 Stroke-- Land Speed-- Bonneville-- count me in. Subscribed! Valves are for Toilets!
What a great place and wondered group of people ❤
Using a bone stock cheap 49cc weed wacker motor from china I can get 45 mph at 6500 RPMs by utilizing a 3 speed shimano internal gear hub as a jack shaft. Ratios are 0.75, 1.0, 1.33. Theres almost no friction in the transmision. Im pretty sure a stock GP49 would hit 60mph without a pipe. Short video of my whip is on my channel.
When first watching this I thought, hey a Dutchman at it!
In The Netherlands we used to have extremely succesful 50cc racing teams, mostly fielding Kreidler powered bikes.
Hi loving the effort all u guys put into your quest for the record. We had the same problems with our RC boats cracking the exhaust pipe. Our fix was to have a flexable joiner on the header pipe to the pipe, we used silcon hose with an inner tube same diameter as the header and had different lengths to help with tuning. Our extended length of 52mm was the sweet spot for our set up. We also changed our mount to the end of the pipe on the small pipe diameter with a flexable mount to help with vibrations, no more crack pipes. hope this is useful. GO FOR MAN!!!!
SOUNDS SO GOOD WHEN IT HITS THE PIPE
Getting closer to the target.
Re spring mounted exhaust.
There are a few benefits of it, one being it reduces the chance of a broken exhaust and it also makes it quicker to get the barrel off to fit new rings in in the pits between races.
But the number one benefit of it as that it reduces vibration at the cylinder head as the vibration isn't reflected back into the cylinder and head, and its a know fact that engine vibration in the cylinder head will cause a drop in power.
So if for no other reason than power output you need to isolate the exhaust with spring mounting.
TZ Yamaha engines had a pair of O-rings at the header spigot to seal that further help to isolate vibration too.
Great stuff! A good way to get faster is to hang around with the fastest people… I learned a lot once just because a high level racer had to change a cylinder and he let me sneak a peak inside his crankcase while it was opened up. Be safe and have fun! 👍🏼👍🏼
The little girl is fascinated with your accent I’m sure. That kid will remember u forever. Trust me. Lol
what the kid will remember is the number of times she asked for a bit of dad's attention and was repeatedly ignored before finally, FINALLY dad picked her up. EPIC parenting fail imo😬
she was saying " your mother dress's you funny"🤣
What you don't see is all the other times she had dads full attention, dwarfing the few times she didn't.
EPIC parenting win is my conclusion after a week there.
@@2STROKESTUFFINGThis!👆🏻
@@raymondo162You see about 1/100 of what REALLY happends! Still you make idiotic comments based on that, tells lot about you...!🤡
Hey @2STROKE STUFFING, Been a long term lurker and decided to comment with a really useful tip for sealing the exhaust. I use PC-Fahrenheit high temp epoxy between the flange and head. At first you may think it will never come off but believe me it works exactly the way you need it too. It sticks and seals at high heat but when you need to take the exhaust off you just need to a give it a little tap with a rubber mallet and it will pop off. I use this method to seal the exhaust pipe on my little 17cc helicopter nitro engine.
The AI sound translator writes [music] when the bike is screaming by. AI you nailed it 100% 🤩😆😆
Best of luck Alex, may the God of speed and rum be with you.
You're looking for Italian cherry tomatoes. They're tiny and very sweet
I built a bike like this. You're gonna want to add platforms for your knees to rest your weight on. Trust me, it will make a huge difference in handling.
But did you see the moonwalking dog @ 04:00 😯
I've been following your progress for the last.......6 years? I think about that. I'm rooting for you. I hope I can be there in person to at least cheer you on in august. I live about 500 kilometers from the flats. about a days drive. hopefully alot of others will be there too. You got this. If nothing else we all know that you've done what very few can do. Here's to breaking a record. Or at least making your own.
Would be so cool if more of if followers would come see him taking that record!
Those guys are so awesome for helping with this amazing project!
at 25 minutes...I would have bet my life savings on it being Dons finger in the carb venturi being what made the engine rev cleanly and not the fuel line flexing trick. That was pretty interesting !!
I enjoy the theoretical construct of little motors and salt flat 50cc record's. Every detail really counts.
It is good to hang out with friends who know what they're doing in an equipped shop that you can bounce ideas off of and troubleshoot and get frustration and still end up having a really good time. That's what it's all about!
Super cool to come across that family of bikers in Colorado... ✌️
...and they aren't the blinkered-minds 'heritage only' 'biker'* sorts either !
But real salt-of-the-Earth genuine biking life- loving folks too, they're Real Biking Motorcyclists !! 🤗🤗😁🍦🍦🍦
I.E; *they're not mad about & only for traditional style US 'tractor'/'potato-potato' bikes (H-D S&S Cruisers) to the exclusion of other motorcycles types and manufacturers etc.
Please no offence is meant or intended to anyone unless they are a potato-potato 'biker'
I love all you guys. I’m a father. Son is an amateur race car driver. My field of engineering is auto safety. Please, please wear helmets. 12mph onto payment gives you a 95% probability of serious brain damage or death. Usually hard surface impacts cause “depressed skull fractures”. That not an over nigh cure . Please, helmets and HANS when you are doing the big numbers. I’m not prepared for tragedy.
Plus, practicing with helmet and gear on lets you know ahead of time about field of view, cramps, etc.
95%??? I have figured out why i am retarded now!! Skate or die!!
When it comes to using a damper to lessen the vibrations, you would most likely need a pressurized damper body! We often think of liquids and oils as non-compressible, but in reality they do compress, the amount is just extremely small, and on top you have the seals that are compressible. Therefore you always have a small "deadzone" in a none pressurized damper, but using a pressurized damper body, you can remove that small deadzone. This is one benefit from using a monotube damper design with a gas bladder or separator piston, but that benefit can also be achieved with overpressure in a twin tube construction, easily achieveable by installing a schrader valve.
Another thing that could be worth trying, is placing a balast weight somewhere on the engine as far as possible from the axis it rotates around, to see if changing the characteristics of the vibrations have any positive effect on the cavitation or aeration.
Best of luck to you and the crew, I'm super excited to follow another adventure across the pond!
set up pipe like a race kart ! with flex and two springs / you can change flex length with pre cut lengths of pipe/ flex look at a kart with a pipe on it DBN
For your pipe cracking all the time: I had the same issue with my honda RS125: I was cracking the pipe every race weekend or so (4-6 session max) I resolve the issue by "normalizing"/anealing the steel after my repair/welding. cook it at 500F(I used my bbq) for 30min, and cool it down slowly. worth a try!
I'm in awe of you gentlemen! I have never seen such great teamwork since the service! Everyone is dedicated to the success of this venture! Each input of each member taken into consideration without ego or attitude getting in the way! I hope for the success in goals!
I love to see grey hairs working on “MOTORIZED BICYCLES”. How I started my career as a MBO (MOTORIZED BICYCLES OFFICIALNOTO ) was with 75 full drill bits, no inventory of steel, fasteners dating back to model T’s and A’s. Took all summer but I got my freedom ticket running. What a feeling! I was 14.
Hi Yel.. haha! I made a 2stroke motorized bike in shop class, ca.1963, retired in FL now, have a 5hp 4stroke fan on a mountain bike, cost$40, weighs 47lb, cruises 27mph, 78mpg. Every boy's dream a bike that pedals itself..
@@jeffbrinkerhoff5121 Ride on! The need to jump on the least amount of mechanical paraphernalia and go (preferably faster than what you can achieve yourself) seems almost in the male instinct. I guess we were intended to spread out genetics far and wide and when the tribe over the hill didn’t share our philosophy we had to move on, FAST! My real life starting at 17 very much followed that pattern until it was rudely interrupted at age 22 by a beautiful girl a marriage and then babies like it was an assembly line (I’m from Detroit area but to use that analogy for families should be given some more spiritual based . My mom finally decided it was time for a trip to the vet. Snip snip you won’t feel a thing. They lied, my own mother. She still was the best mom and absolute champion grandmother. My mom and dad lived 3 houses from my family by design. My wife and I had it made in the shade. Life is good with good kids, good grand parents and good parents that didn’t stop parenting even though they move separate ways later.
Once a 2 stroke is past 8-10K, the ring doesn't matter lol. Most of the time when they piston seize, after they cool off they are free again. We used to use muriatic Acid to clean the alum off the steel liner before honing.
I so much like this video.
This has everything one needs for this theme of "stuffing"
Regards. A fellow Norhman
It’s odd no cherry tomatoes in Norway. The growing season is short and they grow well in the northern climates of the USA like Minnesota. I think the time to harvest is only about 60 days. I see them around my home and I’m at 45 degrees north latitude. I realize you are up at 60 degrees northern Minnesota is at appx 50 degree north. Try it. A little off topic but we needed a moment for those of us that can’t stay on topic to save our lives.
Loved it, but just in case you haven't figured it out yet you may have to swtich to NTSC frame rates to get rid of the flicker in the shop.
You know you are working with the good guys when you see a pic of Super Hunky on the wall. Wow what a vid. I will be following your progress. Good luck at the flats.
Cheers!
Profile of the needle perhaps ..
… I’ve been there.. 2 Stroke tuning is FunDimental..😊
It looked like you did learn some things this trip. Hope you had a good safe trip back home. Looking forward to see you coming back and hopefully setting a record on the salt!
feel like the mychron is more expensive than the chassis..lol but still a good choice
Yes, slip-joints and springs. Years around racing says weld exhaust and it breaks.
37:34 bloody wind, squeeking that effin spring.....😅
I'm feeling a Burt Munroe vibe. 😎
Alex do you use vacuun valve for fuel. Or just a hose from the tank eith shut off valve to the carb? You need vacuum valve to keep long fuel pumping fuel to the carb. A long fuel line vibrating caused air bubbles innthe yel line and you might run lean and messy at high rpm
So I assume your looking at beating the German Kreidler 50 cc World record.I purchased a Kreidler second hand, it would thump anything Japanese up to 125 cc . It started my Pro motorcycle racing career of 15 years 😁😁👍👍
So, no problem getting your questionable Parts through customs? No body cavity search ? That's good to hear. Glad you made it. Good luck!
LangTuning spherical cap set for manifold attachment Simson For the exhaust problem! Item number: 76. 👌👍👍
I had to wonder if there was perhaps a long air bubble in each "downhill" portion of that fuel line, restricting fuel as the flow has to squeeze past the bubbles.
Enough such restrictions and the bubbles may never purge out of the fuel line(?).
Regarding the exhaust, I remember many of the 2-stroke motorcycles of my youth had dual O-ring flange that bolts to the cylinder and a spring secured expansion pipe. Might a set up like that help?
I'm from the automotive world and came across this on accident. Does reading sparkplugs matter in the 2 stroke world ? In the auto world we would be checking sparkplugs after a hard pass especially when trying to dial something in. I'm also curious about the cooling system. I'm not sure where the coolant enters the engine but with the inlet and outlet being so close directly across from each other does it flow evenly around the cylinder and head ? I don't know how the coolant passages are set up but it doesn't seem like it would flow evenly. What temp is the coolant ? I know in the auto world it can be too cold or too hot . That radiator seems way too big for 50cc you could probably get away with a heater core from a car or truck. Save weight and help with aerodynamics.
Iv'e heard of "The Worlds Fastest Indian"... yours looks like it might be "The Worlds Fastest Bits & Pieces"
If I was allowed to join your team my advice would be….a treadmill strarter for testing and bump start on the salt plus a pressurized fuel tank like on a camp lantern and to always run the tank dry.
have u tryed useing longer bolt with springs on them fir the exhaust like they use on some cars flanges
Any consideration on the carb position now off the dyno ? I wonder if the air speed past the carb is affecting your fueling maybe some shielding would create a less turbulent air pocket to draw from ??
With homemade 50cc with 2 gears engine speed in the year 1990. is more than 115km/h, with fuel E95, but it is not the maximum, regulation for carting circuits. No rpm meter, it's time after the Soviet Onion, but the sound is much more RPM. How high is exhaust output? bore hole is 40mm /40mm.
Find SuperfastMatt there at Bonneville, cool dude and he has same crazy idea on two wheels, but not in 50cc :)
24:40 lol I see this all the time with gravity fed water systems... The smallest bubble can create a blockage, the flow of liquid takes the bubble down but the bubble wants to go up because that's what bubbles do, everything locks up. It s an air lock in the fuel line, flush the lines and reroute the lines with no upward flow only down, your lines have ups and downs . I've seen this issue moving fluids on huge gravity fed water systems... ten dudes standing around scratching their heads, lots of water and no flow , pressure reads good but no flow....one little bubble will plug the line.... Drain everything and send the fluid all at once without any air pockets if you have to keep the ups and downs in the line but avoid anywhere air can get caught in the line.
Great video! Would be great if you change the settings in the camera for 60hz so it won't flimmer so much!
It might just be me, but is the rotational direction of the front tire not backwards? could be a small detail that got lost in the huge list of stuff to do :P and as always Go for Gold!
It might be faster if you double wall the exhaust. It will increase the temperature due to the air insulation which can cause the exhaust gasses to flow faster.
Try smaller back sprocket, like drop two teeth, lose on acceleration but gain on top end, and get skinny 16 year old to ride it.
You dont have to use the Computer to see the data on the mychron. :) Just press the MEM button and then you can see the last run, Speed, temps, etc. :)
Nice! As I was heading to bed!
I know I'm old and time passes quickly but there's no fucking way it's been 5 years since you last saw the bike.
Holy hell
Been following this project for years I appreciate all the time an effort you put into filming so we can see your process amazing stuff thank you so much from central Oklahoma
You have to mount the exhaust with two springs holding it to the head because the resinance will break a solid mounting .A small flange on the exhaust port weld on piece of tube for mounting inside the expansion chamber ,and two springs attached to the head and the other end to the expansion chamber ! Problem solved .Its common practice on racing two strokes and 4 stroke racers
I raced gokarts for years and used springs to hold the pipe in place. Like they were saying on race bikes.
I feel like you belong in the United States with these guys.
You might consider NOT using a nitromethane-methanol fuel mix if you're going to use more than 20-25% nitro. If you do, an exponential increase in engine problems will likely occur. However, running a methanol and lube mix will provide the extra boost over gasoline that you'll probably need to reach your speed goal, without having to worry as much with engine burn-down problems... the engine will run cooler on methanol. You looked and sounded good over here! Best of luck in getting the record.
5 years ago. Wow! Seems like yesterday. That video was what got me into watching your content.
Give me a 👍 if you started there too.
LMAO dog moons the camera at 20:20 I was watching with interest up to that point. Wrong time to eat a sandwich 😊
i was so focused on what they are doing that i didn't notice the dog at all
@@yodamaw Neither did I until it did the cyclops wink.
Absolutely loving this. BTW, as a rule drill and wire your nuts.
The way the fuel line drops down might have air trapped in it causing a restriction
Im assuming you have a normal slip joint mounting the pipe to the cylinder. Your loose exhaust was probably increasing the tuned length of your exhaust a couple mm. Not much until it's a 2 stroke pipe!
Second thought... Looks like flange mounting should be a slip joint. Let's the pipe vibrate a little while the flange stays mounted rigidly. Adding a leak to a pressurized system can't be good.
Who else saw the dog walking backwards in the backround at 4:02 ? :D
Put a rubber or silicone coupler in the exhaust between the head pipe and the rear section.
Haha excellent! @ 20:29 we got a full-moon view of the dog's rear end.😂So good to see you out-and-about having fun where it's a bit warmer. This can only be good for your mind. You have very excellent friends too!
Happy days!
😎
A group of us are coming to Norway Friday to catch a ship.
137 miles per hour (221 kilometres) Not bad from 50cc :)
14:14 Back in the early 90s we made Air-filter from Bean-Can and a thin Nylon-stocking for ladies over the can, sometimes 2 or 3 layer.
Or we just put the Nylon-stocking over the entire carburetor and took cable ties. there was no sports filter as far as I know, at that time.
We use what we had, stockings, sponges or swinto the metall-sponge, Stockings was most used.
There was no internet to look for information. But it worked.
Maybe not the best in compare with today's stuff. hehe.
Guys good luck with your job!
You may try to use spherical graphite washer to connect exhaust to engine. It will wear instead of beaking.
That was great.
What a good mob you have working together.
I'm impressed with your work, and it's so cool to know the fix to an issue you've already had. Would a copper fuel line fix the fuel issue? Tha ks for the extended cut upload. Very cool.
Love seeing you back on the record attempt! Next time shooting indoors over there, remember they have 60Hz in their power-system = set the camera to 24fps or try find another shutter speed to avoid flicker…
Kör hårt!
What a great episode. So nice and talented people. Really fun to watch the bike get up to speed. That exhaust could need a good replacement that would stand the job. Looking forward to see the continuation in August.
Damn things fighting you all the way
man i kept watching till the end praying the dependable god's were with ya !!! and then cylinder problems. THE REPAIR IS UNDER WAY !!! CANT WAIT TO SEE NEXT RUN, GOOD LUCK.
DONT FORGET THE ALTITUDE AT THE SALT IS 4200 FT FOR TUNING!