The Most Powerful Two Stroke Ever - Will the ring break?
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- Опубліковано 26 лип 2024
- Spinning the engine up with a drill, will it survive?
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This is the road to the most powerful two stroke (relative to cc) ever. Aiming for 30+hp from 50cc.
Lofty goal!
Here's a few key points:
- 100% bore width single exhaust port, no bridges, non. This leads to unrivaled blowdown specific time area.
- What should be excellent transfer duct geometry, large radius on inner walls to minimize flow separation, constant side wall angles for control, large duct volume for gentle "delivery"
- Valveless tuned length intake with nitromethanol injection, aimed at the transfer inlets.
- Ridiculous crankcase volume, no piston pumping here, it's all about resonance!
- Tuned pipe, tuned crankcase, tuned intake, tuned everything, resonance!
To be able to run such an monstrosity of an exhaust port without instant catastrophic failure there's a special two-piece piston with a retained piston ring(thanks Mark Atkinson). It has no holes in the skirt either, no short circuiting between the transfers and the exhaust.
I've designed the whole thing from scratch.
3D printed, cast(lost PLA), and "Nikasil" plated the cylinder myself in my garage. Designed the case and pipe for it. I've received lots of help from the community with things I haven't been able to do myself(lack of machinery and/or skill)
Especially machining, until recently I didn't even own a lathe.
Thank you guys, you're the best!
I've designed and built a landspeed bike for the engine, plan is to set a new class record at Bonneville.
Thanks for following the adventure, and fear not, I've already got plans for the next project - Symmetric transfers, four exhaust ports, two rotary valves(but not where you think they'll be), forced induction, no need for expansion chamber(!) ++
Many years of two stroke madness up ahead!
Easy is not worth anything
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This is the true spirit of inventiveness and innovation. Someone in their humble workshop, working with rudimentary equipment, but with a vision. I salute your ingenuity and dogged persistence.
Roger D555 the man won’t quit, ya gotta love that
Yea the old school shit...
@@deborahchesser7375 Yes, there's a lesson in that for many of us!
People who haven't been following this build will not realise how massive of a milestone this is from the calm and collected nature of your video. Keep up the great work!
100% it will run. How high it can rev before breaking that ring is a different story though. But it's all part of development.
Let's see you design and build your own untested engine design before you keep leaving such negative comments.
@The Truth about Africa hurts you have no idea what you're talking about
@The Truth about Africa hurts ever get a life yet?
@The Truth about Africa hurts it's an engine, not a motor. At least get that right before you attempt to bully others
It's a heat engine. Just because you found that in a dictionary doesn't mean it is correct in a technical sense. All mechanical engineers (the ones who design these engines) know there is a large difference between the two, so don't try to put others down if you don't even know the technical differences between a motor and an engine.
Hey look, I can google too:
Heat engines, like the internal combustion engine, burn a fuel to create heat which is then used to do work. Electric motors convert electrical energy into mechanical motion, pneumatic motors use compressed air, and clockwork motors in wind-up toys use elastic energy.
Yeah I feel like your content is back better than ever at the moment this is what we come here to see.
Uffffff i cant wait to hear this engine running
hopefully will sound pretty beefy
@@dog_g5048 Like a beefy lawnmover, lol.
It wont run.
Funek Imre it’s a 2 stroke not 4 stroke like a lawnmower
@@einhundertfunfzig4919 Guess what there are 2 stroke lawnmowers. Don't start me about engines because I have worked on different bikes for about 5 years now. So don't get smart with me please.
That was so satisfying watching it go through the motions for the first time.
And ring didn't snag..happy days bro
Next test heat cycle lol
If it would be easy, someone would have already done it. The reason we are here is that we will see the next era of 2-stroke come to life right before our eyes! Keep at it!
only found this channel yesterday, wow, what an interesting channel.
i fully get what this guy is trying to achieve, he was spot on what he said about the resonance in the exhaust..
people watching this need to understand this project isn’t about having every idea and step work, it’s about re-engineering the ideas that didn’t work..
it’s fascinating what he is trying to achieve
Found it today. I'm gonna go back and watch previous videos, I like it!
This is exiting to watch unfold!
IT'S HAPPENING!
been watching since the beginning,bro u got determination cant wait to see this rip
5:50 that exhaust port is INSANE !!! .. great experimental project!!
I must say dude you are the two stroke messiah thank you for keeping two stroke alive much love
Man! This is so exciting, great stuff! You must be pretty stoked. It's plain to see how much thought and work you've poured into the project, it's fantastic to watch - I can only imagine how satisfying it must be for you to see that piston pumping up and down. Truly thank you for taking us along on your journey.
In the process of my first 2 2stroke projects from the ground up . I was a machinists toolmaker an aerospace machinists for 30 years been drag racing cars and bikes since the late 80's just now learning to build up 2 poppers lol. 1st project single seat off road buggy 28hp 340cc polaris 2cd project is a 250 Ninja with a 60hp 500 Rotax twin backed with a 4speed manual and 8inch rear swingarm
Oh boy oh boy oh boy, its soooooo close!!@ I'm very excited for you and also to see this concept come to fruition AND I'm anxious to see it run!!
I’ve been watching from the beginning, it’s been a fascinating journey. I truly believe that you can do it! I’m super exited to see this amazing piece of engineering come to life.
i think i need to go back to the start again and watch these ...... absolutely mental, i love it!
I am very hopeful that this thing will live up to your and our expectations. Amazing work my dude! Can't wait for the next video!
Awesome!! I love how you manage to achieve all this in your garage. I really enjoy watching, thanks for sharing this journey with everyone
Long time watcher from the beginning. Getting really excited seeing your dream engine design almost ready to run. Good luck my friend
Great having 2 stroke videos back, everyone needs a break but glad to see your back
That papercup that fell down from the table scared the shit out of me!
Me too...
Mate, what a result of all your hours of hard work, let alone the time spent thinking about this cutting edge design. I was wondering why you went off and chopped wood, now I understand the reason. Well done, we are all looking forward to the first time it runs.
Getting closer, super excited for you man!
Congratulations!! That is a milestone in the project. I am very excited to hear it run.. waiting eagerly in New Zealand 👍
2 from nz excited to see this run
Holy shit that sounded smooth at the end
You definitely have come a long way with the engine. Keep up the awesome work!!
Nice progress 👌. Ceep up the good work
That was suprisingly scary to watch! Glad it didn't blow up after all
Brilliant!
I’m keeping everything crossed for you 🤞👊
Woohoow! Stuff is getting in progress!
Cant wait to see this run, and i hope that it will run great without issues.
In theory this should work great and if so, then this is breakthrough stuff!!
this was informative video about 2 stroke exhaust ports, learned something new today! cant wait ot hear and see it running!
This is a project to be proud of you have gotten so far and even the knowledge bombs now are intense
This is a very cool project! I'm a 2-stroke fanatic of over 50 years Very excited to see this engine fire up!
I'm new to the channel.
You got so much content and you make too much sense how can I not go back and watch.👊👍👍👍👍👍👍☝️
This is great progress, can’t wait to see the next vid
So glad you are back on this project , please don’t keep us all waiting long we need to hear this thing run
Absolutely amazing port setup. I can't wait to see it run.
Very excited to hear this thing run!!!
I will go out on a limb here - at the risk of being called a heretic and a madman , have you considered designing a micro controller controlled variable tuned exhaust ? You could use a stepper motor to drive a movable deflector or baffle in the expansion chamber to change the timing of the exhaust pulse return and possibly widen the power band .
Just a thought.
I still think you should look at how a model nitro engine is constructed, they use aluminium pistons running in a chrome plated brass cylinder and no rings at 40k + rpm , you can run an aluminium piston in an aluminium bore if you plate the piston with either tin or silver- Briggs and Stratton engines have been doing this for over 40 years . If your aim is to do a run on the salt flats you don’t need an engine that can run for a long time , top fuel engines are rebuilt each run so you may need to do the same . Also what is the rotation of the crank i would want it so on the compression stroke the side forces on the piston drive it away from the exhaust port.
I have been thinking about variable intake and exhaust systems also.. glad you threw it out there for comment..
Jimmy J
kart and bike racers have been swapping exhaust pipes around to suit certain tracks for years but i have yet to see something that can do it on the fly .
I’m not sure what effect a variable length intake would have on a two stroke though .
Maybe a dumb question as I’m pretty new to 2t but your idea... is that not basically what a powervalve does like the ypvs
@@A-Z_Motorcycles Exactly that. Kawasaki's KIPS too.
XxSimplYxSmokiNxX
No a power valve changes the height of the exhaust port so it opens earlier and closes later .
It does effect the exhaust pressure wave because the exhaust port is open longer allowing the pulse a bit more time to return but two stroke stuffing isn’t using a power valve .
The timing of the return of this pressure wave is critical to maximum power and as the wave travels at a constant speed but the engine doesn’t there will only be a fairly narrow section in the rev range where this timing is optimal
A youtube channel called AU mechanic explains this fairly comprehensively.
I to have been here since the begin...I would be over the moon with this progress...building the log cabin has cleared the mind...wonderful to see this progress...wow firing it up will be exciting!!!
So Glad You Are Back!!!!
So glad these videos are back
Geez, I am impressed. Honestly didn't think it would work. Well done.
I cant wait this has been along time coming . Good luck
Fantastic to see progress! I have been watching from the beginning of this project. I want to hear another engine like your 20 horse 50cc, only better!
Getting excited now. Can't wait for the next episode. Good luck from Japan 🇯🇵🤟
Can’t believe the progress! Awesome video
Your filming and imagery is art. Keep up the videos man always love to see what your doing!
Thanks for the working information.
Great work, really curious how this will run. You really are an inspiration with what you do!
I love 2 strokes ! Godspeed Bro !
Looking promising! Good to see you're back at it :)
Thanks! Hope you are doing well!
watched you from the beginning,keep up the good work,
Very cool! Congrats
Outstanding work!!
Man I'm so glad to be watching from the start if this build
Awesome progress
Great explanation
it already sounds amazing
Dude, I feel it. This is going to work. Keep it up you crazy fool.
Great progress
Love this series !!!
PROUD OF YOU SIR! SENDING GOOD VIBES YOUR WAY! ✌💚
Thank you for demystifying the piston you use!
Ohh man I've been waiting years to see this all come to fruition
I know exactly what and why you are doing, log cabin or 2 stroke. That's why I watch your videos. Creetings from Finland and keep up the good work!
I did like that cylinder ring idea also in theory, but I think plain aluminium piston would wear quickly with it. But it is something to think about, if this one will fail.
That's good progress 👍
Yess! This is the video you've needed to make.
sick build!
Great R&D man , love your videos
Oh yes.... Exciting stuff indeed! Good job
Holy shit this is getting really exciting! Crossing my fingers for the first fire up!
I am excited to see this setup run! The idle speed may be through the roof with the exhaust port being 100%. But who knows! I’m ready for the results! Good luck!!
I love your videos man
That's amazing keep it up.
Cant explain how stoked I am to see you back at it
Didn't know about 2 peice piston!
Never came across one..
Really want to hear this creation scream!!
The large almost half of the cylinder circumference exhaust port has me very intrigued...
When it is running under it's own and no noticeable issues..I believe you should patient the design.
Well done my friend!.. very commendable!.. nice to see some one who’s grabbing the bull by the horns!!.. Necessity breeds invention!!.
This is so exciting! 😀👍
From my 18 years of building racing 2 stroke engines, that exhaust port floor is going to destroy the loop scavange and disrupt flow and cause a hot spot. Will likly heat seize at the skirt of the piston under the exhaust port.
So tell me about what work I need done on my 02 CR125
@@aaronmc5296 sell it and get a 250
I love science.keep going."without trying you will never know "
Very cool!
People who come here and say they been waiting for a month 😂😂😂
Been subbed here for over years
2strokestuffing I love your work and be able to think outside of the box
Keep it up 💪💪
Same as me but this year I have lost the tack of videos time to go back and watch the 2 videos I haven't seen
I didn't see all the cabin videos aswell
Keep it going, cant wait to see how much power you will squeeze out of a 50cc :)
I'm new to your project. Thank you for the explanation for the piston ring limiter.
Fantastisk stempel og stempelring-konstruksjon :)
Sounds promising, I cant wait for it screaming. You are a Burt Munro type guy.
It's a fjord thing..
That was amazing
make this guy your enemy and you are done! sooo much determination it's unbelievable
Real science, like your work!
Your seriously the man bro💪
Great work ,really hope it makes massive power, can't wait to see and hear it run ,will be so loud at 20,000 rpm lol
Def favorite channel
Like I said no last video, I'm getting super excited to see this thing run!
Serious amounts of work!
i wish you were my uncle or somthing haha. this is so exciting, been following for 2 years now i think
Nice going. Would love to see it run.
Thank you for explaining how those rings work.
Uffda! I think you are on to something now!
It's beginning to make engine noises!
Can't wait for you to get it all buttoned up, it's only when you get the full running loads on that piston/ring will we trully know if it's going to hold up, but it's looking good so far!