Step 374 or so of making the Most Powerful Two Stroke. Assembled, again.
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- Опубліковано 30 вер 2024
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Was great to have that synopsis at the start. Only then did I realise I was on the bus, clutching my ticket, with a bit of an idea of where we were going, no clue where we currently were, and only a dim memory of how we got here! Carry on driver! 😂💪
Your attitude to face the problems and find a way to resolve them is so inspiring man... watching your videos helped me a lot in developing my project. Thanks!
Not often have I wished someone success like now. All the hard work put into this project is to good to fail. I love your videos and I always look forward to watch them. Wish you the best of luck Aleks!
There is NO SUCH THING AS "FAIL"...
You just learn another way witch will not work...
While true in short term maybe. I wish that was true always but exhaustion can come from lack of resources, funds, motivation or even mental capacity in long term. Aleks deserves success with all the effort and time he has put in to this project. Looking forward to that time.
The longer the hard times, the greater the feeling of success. Easy isn't worth anything!! This is why i love watching this channel. It is the determination Aleks shows trying to achieve this near impossible goal. Love it
"This idea is not dead" - Good, cause easy is not worth anything!
Hail the algorithm!
"This time"
Går nok bra!
Underholdene og interessant er det uansett! Takk for dine videoer opp igjennom årene.
Makan til positiv fyr som Alex skal man lete lenge etter. Så mange nedturer og så mange failed tester, men allikevel positiv til å jobbe videre mot målet. Alle andre ville kanskje kastet inn håndkleet for lenge siden.
Men vi må finne en måte for å hjelpe han til å huske på å skru på recording når han jobber, for enda en gang, mens jeg skriver dette, så sier han "I forgot to record" 🙈😂
Så mye underholdning, litt komikk, og masse nyttig fag-info!
Alex er en fin fyr, og han fortjener vår støtte!
@@Norwegian71 Det var fint sagt. tommelopp!
@@Norwegian71 Følte meg litt inspirert selv egentlig 🙂
knackebrod
Klingon?
Have you considered running the rotary valve at half crank speed and making it look like a two bladed fan. It would be more balanced and not cause so much friction. Just a thought.
Really good idea
Reply, just for a bump
Man, I really miss that landspeed bike era.
what do you miss?
Stay motivated, one problem at a time. You’re doing it! 🎉
Love this stuff . My chainsaw is 50cc . I would love to get 8 hp put of it, let alone 23 hp
So pleased to see that your confidence has returned! Your onto a winner!
For "self threading", something that can help is.
If you have two of the threaded part, you can turn one into a makeshift tap by cutting slits/notches in it using an angle grinder. Works much better than just forcing it in.
You can also sand/lathe the first few threads down so it is tapered, much like a real tap.
This also works fantastic for cleaning up rusty/corroded threads.
If the Aluminum is soft enough, then forcing it will create a stronger thread, just like a rolling tap will.
I thought today is friday. Apparently not haha.. this was a surprise
have you seen the new patent from mazda..... 2 stroke over head valved and blown motor ?
Sounds like a 2 stroke Detroit Diesel engine? 😅
@@marcelpursche5339they actually don’t use uniflow port scavenging like the Detroit, it uses an intake and exhaust valve just timed cleverly to scavenge the piston. It’s weird idk how well it would work in application but I’m curious to see how it turns out
@@PotatoesAssistant Oh I found the schema of the engine. Pretty weird design. Looks like a regular turbo-charged 4 stroke but with a 2 stroke power cycle. I hope they actually build a working engine. Would be interesting to see it working.
What every 2-stroke engine needs-rpm-limiting valve springs.
@@davidgierke7582 I don't think Mazda is trying to build the 2 stroke with most power per cc but rather with the best efficiency and emissions. A big part for that is not burning the lubrication oil, running on self-ignition for low-rpms and exhaust gas recirculation. It will probably have an ok power per cc ratio but nothing out of ordinary.
You should buy a boring head for boring precise holes in the mill.
Interpolating holes isn’t as accurate as you would think, a lot of the bores will be egg shaped. I made the same mistake on my home made engine.
👍 I've got one, should put it to use.
Interesting that you notice that there is a lot of friction in the crank seals, and that only by rotate the crankshaft by hand.
Think of the friction you get in the crank, with pressure on the seal-lips and 15000 RPM.
A lot of power is lost there.
Maybe you should research crank seals of different materials and design and see how much HP the difference is?
Yes I totally agree with you but we need to remember this type of seal has being used on engines for many years and should suffice in this application.
A good run-in period lowers internal friction no end plus the correct running temperature.
I've been watching you for about a year and just NOW I am becoming aware that there is a purpose to building the most powerful 2 stroke. I've just been enjoying it and the idea of it being built for any reason other than to just build it never once crossed my mind
@5:43 you say free jazz which reminded me. WHERE'S THE JAZZ MUSIC MAN?! Half the reason I started watching was for the jazz music. That I stayed for the experimental blown 2 stroke. Now we've sort of devolved into mad scientist vibes and I'm too far gone to quit. I have to see this through.
Gosh damn that engine looks good in the video picture
Ah Sisypuhs and his engine. It's admirable no matter how many times he has to start pushing it back up, he doesn't give up. Can't wait for the day Sisypuhs finally rides his engine up up the hill.
Might want to check the flatness of your case where the cylinder mounts after forming those threads in with the fitting. I would not be surprised if the aluminum stretched enough to bring that out of flat.
At this stage, i reckon i could just about reassemble this engine.
Ooo this is exciting!!
Can't wait to hear that little engine run!
He should invite to a "shop tour" for patreons, so thst we can experience the sound in real. The mic never gets the true sound of a revving 2-stroke 🥰
At least you didn’t cut your fingers off with that Grinder
Was close...
I cant wait for results.
I wish it will run perfectly well.
Old motor has spx style cilinder right? Or I remember wrong 😅
Your a class act keep at it genius is how often you strive from failure nothing fails if you keep focusing on fixing / re inventing keep at it 🏴
Hi, excessive temperature is result of that seal, observed same situation when shaft and bearing got over 100C after few minutes running at 6000RPM, shaft diameter 50mm. Removing seal resulted in something like 40C drop.
Do dial indicator check for runout after the crankcase is assembled.
If you delete the crank seal from the rotary side isn't crankcase pressure going to leak between the rotary valve and housing clearance?
LEAK TEST before installing in frame this time
that looks like BSP on that coupling a tapered thread
What a STUFFING good episode, STUFFED full of old good bit's 👍😁
Have you ever considered a multi cylinder 50cc?
Thats a mythical beast on UA-cam… an angle grinder with the disc guard still in place 👏
I'm sure it's just for the camera 😂
Good on him, I've seen the accidents they cause without, and in all my years of using grinders, I can't think of one time a guard got in the way that couldn't be fixed by shifting postion slightly.
Hope it "roars" this time after all your work! Best of luck!
By the way, wasn't the crankcase assembled without gasket/sealant? Maybe I missed it.
You should be sponsored by JB welding😉 Keep up the good work, you will get there👍
Fantastic!! I can't wait to see it run. You've put so much hard work into this wee beast. I look forward to seeing you back at bonneville one day.
👍 thanks again , can't wait till Friday
The winning engines from Morbidelli (Jörg Möller!) had openimg time of 276 grades in the rotary valve, not just 180.
It might look like 180 but don’t forget to add the width of the port, in degrees, to your calculation
It's ALIVE! Oh, wait, I'm getting ahead of myself...
Only one thumbs up for your comment, thats a good description of Alex's luck.
You keep it real. I like when you see real life, real obstacles and real solutions.
Will never have a two stroke bike, but keep watching.
On the brute force design, would it be possible to integrate the compressed fuel/air after the crankcase? Most people try to do forced induction before the crankcase, but I’ve never seen someone do the forced induction between the case and the transfers 🤔
Did the crankcase stuffer go back in when you put the cylinder on? The video showed it missing, but you might have taken the cylinder back off to set squish and then inserted it?
It was in there, but not tightened yet and sat a bit below the surface.
I'm sure it must have been discussed before - but what's the impact of the significant intertia/imbalance of that rotary valve? ideally, should the crankshaft webs be 'adjusted' to compensate?
I feel the crankshaft "balance factor" is quite low as Alex has suffered with severe vibration problems going back to the SPX era 8 years ago when he tried various cranks to resolve this problem without success.
Yes, it would be nice to balance the crank and disc valve together but Alex doesn't have that luxury ATM.
I feel now the carb is mounted horizontally the fuel frothing problems induced by vibration will be tolerable with no fuel starvation as previous.
I would love to see the change in the crank balance factor with the alloy crank stuffers removed then replaced with much lighter cork.
Better crank balance has many benefits as we know.
I love your videos and suddenly when I watched this video I asked myself if it’s possible too scale up this little nitro rc car engine to 50ccm or not because this things ref to high? Sorry for my bad englisch I am from Germany but I tried my best.
I was just wondering could u possibly make a 2 stroke with a wet oil sump there’s a patant from a person made from Australia online who made it and was wondering if maybe u could make the world’s most reliable 2 stroke when ur done making the world’s most powerful 2 stroke lol
Beaten paths are for beaten men, Eric Johnson:
Great journey summary at the beginning. I've followed you for years and forgotten about all of the stuff you've done. Next time, can you give us a reminder about the goal of the most powerful 50cc engine in the world please. Is it Bonneville again? Thx!
Nice recap and looking good. Fingers crossed for Friday 🤞
Looking forward to your next video Dave.
The dream team, you and Alex!
@@malcrandall1309cheers Malc, hopefully the next vid will be out the end of next week
Can you make the rotary valves thicker so they are tougher ?
The thicker they are, the heavier they are thus more stress and vibration.
Fitting is either a ¼-18 NPT or NPS or a British ¼-19. If either tap isn't available, a steel fitting with a few slots cut in it (perpendicular to existing threads) with a Dremel cutoff wheel - or similar - really does work in lieu of a tap, gotta be straight @ start (...looks like you'd be aware to all of that cuz all this isn't your 1st Sapporo out of the 12 pack; more for those that are nursin that 1st one, metaphorically speaking.
It's friday here and i'm getting my weekly fix of 2 stroke mayhem....and to top that off...we had a guest appearance in the garage...yes...mr compressor is alive and well.
Commenting at 4.30 minute mark Or you could just make a rotary valve cylinder completely round cylinder not a wankel completely round rotor, reason I'd say it would have to work because back is 50's there was a Holden 6 cylinder engine that raced at Bathurst Australia with a custom rotary valve head you'll find on Net , 20 years I've thought that would have to work as a cylinder, yes less side force compression like a wankle but the revolution speed if blue printed an balanced would be high.
Designing the right combustion chamber on rotor would be key for compression like a layed down tick , torque , hp would come with high rpm , definitely to up compression you'd need supercharger because the rotor isn't oscillating only spinning.
Cheers got you thinking now I bet picture it as a flywheel in a cylinder
Hi mate I've been watching your builds for a few yrs pall
Your a wizard of 2T tuning mate good stuff
We’re going to have to start calling you Keyser Söze. “And just like that poof he was gone” !
Hope you find the time to continue and get your head space back!
Hoping the next video is coming soon, I'm having 2 stroke withdrawals.. 😂
Have you seen @mazda s new 2-stroke engine design? When I was watching the tech breakdown I immediately thought of your Brute force engine and wondered if the intake porting scheme they use could be applied.
Wait, did I just see you use a GSPORT BMX freestyle peg as a seal press?? I've used a bicycle peg as a press tool for many years haha
Just seen a video from Mazda blown twostroke with valves. Had to think about yours with the roteryvalve. But they used like a 4stroke head and had various compression
I imagine you have studied in depth (and are perhaps exceeding in output) the karting engines of the Italians. Some of their old 100cc rotary valve engines had a piston life of 20 minutes
I just found your channel last night so awesome Ive learned more watching your videos then Ive known all my life Thanks
Working through the issues one at a time is logical and more likely to result in success. This level of development though, can never be called "easy". As we all know, easy is not worth anything.
Engine sealer on the rotary valve?
On the mating surfaces, not the valve itself.
Looks absolutely menacing! Can't wait to hear Pip sing again!
Tighten up on measuring, machine as much as possible assembled, use orings instead of jb weld. Keep your hands clean.
Took me 40 years to figure that out .
Also what cilinder bolt patern you use? Maybe test the bottom of engine with a different cilinder? A Bad case can ruin the best cilinder!
So I have a premium account and you have forced an ad onto me. If it happens again I’ll unsubscribe
maybe look into the mechanical seals used in water pumps, if this not works either. gl tho..
I do castings for aerospace/dod. Super cool to see it being done on a small scale with the burn out method successfully.
That's a standard pipe thread.... next time you need a tap just try buying a steel pipe and cutting it across the center with a bandsaw in an x pattern.... only cut it about a third of the way down..... Weld and old socket to the end of the pipe and then use it like a tap with your socket wrench !
It's just always trying to reject the rotary valve, the little thing just wants to sing 📯
Miss the nostalgia of the heater sometimes but the videography evolution is quite impressive.
Have you thought to look at labyrinth seals. There is no contact, just a convoluted path for escaping pressure, which causes the gas to drop in pressure at every stage, reducing how much it can leak.
The brute force was Awesome- I was a little disappointed when you dropped that👍🏻
Thanks! Not dead, just on hold. Got some ideas I want to implement.
Can't wait. Your videos are the highlight of my watching week.
lol use a rotax jug but then what have you done? made a nice case ...... Cool
I love the journey, but just promise you will attempt to get it running on nitro-methane/methanol!
The engine that you have in your land speed bike is already proven. Why not add a supercharger to that engine?
What kind of mill is it you are using? Looks like some kind of homemade/modified solution.
4736 actually but who's counting. Lol
You used to spend all your money on nitromethane, now you spend it on Loctite. 😂
I'm finding this channel fascinating, I can't wait to hear this scream in the next one.
Another very interesting video. Many thanks for the summary of work so far. Much appreciated.
Forced air induction, through the rotary valve, straight into the piston ports.
@7:50 what brand is that deburr tool? Looks nice
Have you ever mentioned making diamond whetstones? tell me how to do it?
You have JB Weld, yet no 1/4" pipe tap?
I guess all those wires are worth more than my whole 27 ft boat.
😈😈😈😈 great video 😈😈😈😈😈😈😈😈😈😈😈😈😈😈😈😈😈😈😈
Man, breaking an "pinnbult" on my GF''s Sachs 50/5 doesn't feel like a problem comparied to yours.
Still dont wanna fix it until spring tho. 😅
Build her a 50/6 gs
What is ur accent
Norwegian
I am curious if speeduino could run this engine.
Right on 👍 thats going to be bad ass keep up the good work 👍
You are truly experimenting with new ideas. Your always such a pleasure to watch. Everything that you do successfully or not is gained knowledge and another step towards “the most powerful two stroke ever.” 🖖🏼👽
looking forward to the stasrtup
What is the displacement of this engine?
looking good power should be great now
When’s the next video dropping?
I can't explain in words how much I want you to succeed, or how much I wish I could have one of your crazy engines slapped on my Derbi Senda R -99. Me going against the norm I've been trying to get my two stroke to get some more bottom end power rather than the high rpm effects, but as we all know it's a losing battle. Still, it's fun to experiment!
Methanol + high compression + timing lowers the RPM of peak power while also raising the height of the peak. Have you tried that yet? I've got a video going over my carb build and testing/dyno results if you want to see.
@@theshippingcontainergarage That sounds like a good nudge in the right direction to try, though I don't have methanol available. E85 is probably the only viable option for me economically, probably not as effective but maybe it'd be something atleast?
The main thing I've been trying has been the exhaust and intake, but on a 50cc it's been hard to notice any big differences. My measure of success has been getting the moped to run ok in 6th gear on flat surface trying to keep a steady 30km/h, but there's not much power for anything else haha!
Will check the video!
@@Seriouskai E85 is alright, not nearly as much of a power bump though. Something like 3 to 5% more HP. The only problem with pump e85 from the gas station is that it has a range of ethanol content. Something like 50% to 90%. I don't know the exact number. It will be impossible to tune the carb for anything other than one batch of fuel since the next time you fill up your cans it will be a different concentration. Unless you are buying a race fuel ethanol like an e98 in a can with a guaranteed ethanol content. At that point just make the jump to Methanol. Where I'm at it's really not too expensive compared to most leaded race fuels, I buy the generic methanols, no need to buy expensive VP racing methanol etc. Call around your area see what you can find from race shops. You won't use THAT much fuel on only 50cc haha.
You could buy a smoked KTM 50 SX cylinder, preferably 2009 or newer and copy the geometry from the cylinders/bottom end. Those bikes make stupid amounts of power for what they are.
@@theshippingcontainergarage Yeah and I keep hearing bad things about the fuel here in Sweden as well, so I highly doubt it's purity and being consistent. The big problem I have is money for all the fun stuff though, oh boy if I had more cash I would do so many things since I have all the time in the world.
I haven't done any major changes to the moped either since I need it as a daily runner for the moment, basically my ideal goal on it would be something that tops out at about 70km/h and has the strength to actually get there steady, but not make so much noise every person outside would stare at me going by. Right now it's fine up to 60 or so depending on the mood of the moped, but that 6th gear is hard.
I keep reading your declaration concerning how a two-stroke engine's peak horsepower rpm is lowered by using methanol (over Gasoline, I presume), high compression and timing (earlier, I presume) to accomplish this feat. Why do you think this is happening?. @@theshippingcontainergarage
Have you looked into sleeve valve engines ?