This Part Doubles Power in a Two Stroke!

[@tinymotogarage]

5:56 - "finishing with a quick hand job" is why you are always so happy. Well done you!

[@buddyjames6064]

Bonus happy ending

[@jamiecurran3544]

Lol!😂

[@georgea6403]

Ahhhhhhhh

[@David-js6sg]

Pervert!😮

[@IFRYRCE]

There's nothing I look forward to every week as much as a new 2SS video.

[@UliMuliko]

asoftaaja is the best

[@2smokes]

yeppp same

[@Altprophet]

One of the highlights of my viewing every week for sure.

[@kytkinpommiracing]

Nii on

[@racingsmurffi4640]

​@@UliMulikopaitsi kerran kuus

[@Jorporte]

I had to come to the comments and say how much I LOVE your background music during the montages! I never would’ve thought that what I wanted in my life was CNC machining montages with various Jazz music selections in the background! Bravo sir! Love your video style!

[@raymondo162]

i find the music frustrating........... i don't learn owt if'n yer man don't explain owt.

[@sensoryoverload673]

@@raymondo162 Try to stick to English so we can all understand you, please.

[@tonynewcombe9075]

Music doesn’t belong in a workplace. !. Health & Safety. Other than the music, interesting progress. 😊

[@atcmadness4351]

What? You mean you don't want to hear some rap music in the background? But, they have sooo much talent. I love hearing his music or nearly anything before 2000. What we have now just promotes the degradation of society...

[@deucedeuce1572]

lol

[@ferrumignis]

Larger pulley on the crank means you are spinning the gearbox faster so increasing windage losses. A smaller rear sprocket (or larger front) is likely to yield better results.

[@2STROKESTUFFING]

👍😁Was just thinking about it!

[@joec-hd6dc]

@@2STROKESTUFFING Yes What he said is a exalent point 👍. jm2c 😉 P.S. Rear wheel rpm is required to achieve top speed and with only 50cc's tooth count on front and rear sprockets is a critical part of tuning. Probably going to need a box or two of sprockets for your testing. This was Captain Odvios's suggestion 😁..

[@TheGalifrey]

It shouldn't be significant as the gearbox itself already has a primary reduction. 1:1 with the crank should be the same as the base bike the original engine came from. A small amount of ATF in the gearbox over the usual oil might help with that.

[@bottomendbliss]

@@OneHappyCrazyPerson The engine that can is the KZbin channel. 39000 views in 21hrs, 200k subs.

[@ferrumignis]

@@OneHappyCrazyPerson _"And left the woods in "_ Sorry I don't understand what you mean, what "woods" are you referring to?

[@MetroTubettaja]

Love the communication between you and asoftaaja. A real collab with Finland and Norway. Waiting for the IRL meet :D

[@uwu3130]

maybe someday 2 stroke stuffing will come to vauhtipäivät :)

[@peteharland8328]

LOL....."a quick hand job" means something else to us in the UK! :) Great concept.

[@2STROKESTUFFING]

😁I know...

[@Pixelarter]

Indeed, quick hand job is a great concept.

[@Harry_Gersack]

damn I came here to say that😂

[@peteharland8328]

I'm just glad he edited it out.@@Harry_Gersack

[@Harry_Gersack]

@@peteharland8328 huh? I don't get it 😂

[@mathiasg2480]

So glad for the music to be back! Thanks for your dedication as always

[@DaveWithMS]

I watched a couple of your older videos Last night, from 4 years ago.. the whole journey that I have been watching since you are casting cylinders yourself in your garage, makes so much more sense now. And it is truly awesome that you got to end this video with yet another win. Can't wait to see the next video

[@dredrotten]

@@OneHappyCrazyPerson You sound like a very UnHappyCrazyPerson? Make sure to take your meds so you can be OneHappyCrazyPerson again.

[@bottomendbliss]

@@OneHappyCrazyPerson The win is the youtube channel. 39000 views in 21hrs, 200k subs.

[@DaveWithMS]

@@OneHappyCrazyPerson i could sit here and tell you how wrong you are. if you do not like what he is doing, then don't watch it.

[@2STROKESTUFFING]

😘

[@dontarguewafool955]

​@@OneHappyCrazyPerson Character like yours, is called " joy suckers ". Get a life and do something constructive with it, instead of trolling talented diligent people that overcome obstacles and bring prosperity and skill into the community. The man is a winner, because he never gave up and now is enjoying the fruits of his labor. Something you may never experience sitting at your key board condescending others.😊

[@oskarvidarsson3258]

You know it's a good episode when the jazz is playing!

[@lucas02389]

“Finish it up with a hand job” I hope he intended to say that because it was hilarious

[@DylanGoebel]

This is my absolute favorite series on any platform. It's a treat to see your post weekly!

[@drewmcneill4471]

I've been rewatching your videos the last little while.....I was so caught up in what you were building that I never noticed, but your English is so much better than it was a few years ago!

[@godfatherderzucht]

This was a very nice video! I enjoyed the music and matching screen action!! I got the feeling you had also a lot fun creating this video. Go on mate! You are awesome

[@geemy9675]

its great when "double" and "power" go together

[@MikeyAntonakakis]

You should be able use a beam-type torque wrench to measure the running torque of the gearbox/pulley setup to get some idea of the torque it's eating. Turn from the crank with belt and spark plug removed to get a baseline (basically just resistance of piston in cylinder and rotary valve), then see how much it changes with belt installed and pulley tensioned. Even 1Nm difference would be more than 2hp loss at 17k! And I don't know if you're there yet, but maybe it's almost time to start thinking about the engine dyno again now that the engine is running pretty good. I think this fits with the "lowest hanging fruit" approach that you've been taking (which is a very good approach for your situation btw!). I think you're quickly getting to the point where the belt->gearbox->chain reduction complexity is becoming the lowest fruit...

[@brentspellmeyer8943]

🎉

[@viktorandersson7819]

I agree, the losses would be very interesting at this point. It might be producing much more power than measured and so the approach to gain more might be different. Also, the engine dyno would be much better. The swedish "Tvåtaktsmeken" made a really neat dyno with hydraulic pump instead of an electric brake. Seems to be consistent, easy to use and precise. That truck brake doesn't seem to be a very good solution apart from it being easily controlled with the computer. kzbin.info/www/bejne/pJ-blWqgfdN6hpY

[@MikeyAntonakakis]

@@viktorandersson7819 yeah water brakes are cool, I used to use one for a 600cc engine when I did Formula SAE (Formula Student). I think most or all his issues with the engine dyno were input signal issues (vibration in load cell and interference on rpm signal) which should be easy to solve, then just PID tuning for the control loop. At the time, though, I think there was often confusion between dyno issues and experimental engine issues.

[@babaarcuszatir]

Music took this episode to a new level! The episodes were already entertaining, but with more tunes (pun intended) it was great. 🙂

[@matthewnorris203]

Man, he’s really into this stuff. I’m lovin the jazz you have goin on while you’re doing stuff.

[@Haps_q]

Im glad to see that its fully back to experimental, the difference is that its making stuff work before adding more madness.. This truly is the greatest channel on youtube.

[@onefastgmc]

Ive stumbled across this channel a couple different times, im now subscribed so i never lose it. Your content is awesome and your out loud thought process is super relatable to what goes through my head when something doesnt work right 😂

[@ASoftaaja]

SUFFERING IS OVER! To hell with the choked exhaust duct theory. Or it at least needs some further research. The belt drive probably adds at least 5% losses so it probably has already about 15 crank hp. I am eager to see if you can push it past 20 with some tuning. If it now has torque peak at 14K, the potential could be huge.

[@retsamyar]

the first 5 minutes or so with the saxiphone song playing was wonderful! greatly appreciate the ambiance you created there. Thank you for the videos and all the creativity you share with us.

[@waynewright5504]

The well researched rule of thumb for duct exits I published ages ago was that the smallest area should be 75% of the Exhaust Total Effective Area at 1.5X the bore. Then a transition from 75% to 100% at the round header diameter out at 2X the bore - so you still havnt got it right - just trying to help - from Wobbly.

[@nathancurtis1083]

Well i had my mid 70s rd 50 doing 16000 rpm and just off 100 kph with only 4 mods compression increase , 100cc reeds and carb from a similar Yamaha , cut the piston ports open. Most important i raised and notched the exhaust port. Gas flow is very important must get burnt gas out of cylinder.

[@ianrusso8790]

love this channel, this is all I did when i was from 13 to 18, started on my aprilia replic 50 and than graduated on the cagiva mito 125cc. I managed to get in to the high 30's hp, with malossi and polini parts I got to 40 hp at 15000 rpm it was. this was back in the early 90's before every nut started going crazy about polution......

[@GIDO74]

13:58 Can you please tell me what that belt is for? It is not 4 stroke so no valves, is it a super charger?

[@djavankoolemansbeijnen349]

Great video as always. Might wanna check your rear wheelgear because i saw some sparks flying of of it.

[@frido15]

Yeah, check 13:20

[@jeroen1914]

Its the brakepad doing its job, he actually slows down the dyno with it as well so it has a pretty hard life haha. Nothing to worry about.

[@CriticoolHit]

5:55 As an American this has a VERY VERY different meaning. I needed that laugh this morning.

[@dietbr00ksy]

I love this channel. Keep pushing brother!

[@SteveBuffel]

Well done. Many lessons learned and lots to unpack here!

[@1979rm250]

I screamed at the top of my lungs NOOOOOOO at 14:45😱😱" haha we ran out of fuel!". WHEEWWW thank god!😅😅

[@charlescole-p9v]

Following for years & glad to see you're going in the right direction. Keep going!

[@ChainDragGONE]

Alex, The machining of the head to accommodate different port geometry is brilliant! The ability to Dyno a series of runs, document the test, then remove the current designed port and install another slightly different is just dam smart thinking outside the box. It is always about, just one more thing, that you surprise us with! You need to get a printer or interfaced program that can document gains or losses for comparison. You have created a Engine from scratch and taken us along the journey, this is why your videos are so good, thanks. I understand, a couple of ice cubes and 3 fingers of Jack Daniels, can make a great idea....Futuristic...in reality!

[@bob-g3e3x]

In the 90's we used to bend the metal restrictor tabs on the reed valves, it often gave huge power gains

[@vaiskipoika7316]

amazing video as always i have been following your series of this engine a long time and its great to see horsepowers and i learn new things everytime i watch these videos

[@johnhadrava232]

Good for you man, I like the fact you never give up!!!

[@gary-rf1co]

From Arkansas, i dig it! I repair old outboards!

[@richardharding3682]

Do your thing Big Man.. Regards from Sunny South Africa..

[@simo9713]

13:22 you might be out of rear brake pads. I can see sparks flying.

[@bakkerhenk8475]

Love that the jazzy tunes are back ❤️

[@iamarawn]

It looks like your horsepower output goes down the more RPM you make. If it's not timing, it might be a completely wrong exhaust. Have you calculated an exhaust or only used pipes you have? We usually say that 70% of the power is in the exhaust, with 2 stroke engines.

[@VyantQuijt]

it was specially designed for this engine concept, although since then a lot has changed on the engine...

[@iamarawn]

@@VyantQuijtAhh I didn't know that. There are so many episodes. Thanks for the info. Maybe it's time for an update.

[@erniemathews5085]

You have been my professor with two-strokes, especially hotrodded two strokes. It's been fun for a four-stroke guy: all new stuff.

[@johnyoung3103]

Just to add more complications to your life: have you ever considered a flow bench and smoke chamber to see what the ports are actually doing?

[@joaomelo7376]

Not sure what happened there but there was sparks coming out the rear wheel!! Sprocket maybe? Anyway finally good progress, we waited so long!! Road to Power!

[@razor1uk610]

Rear brake pads wearing when being used, the metallic particles within the pad's sintered matrix are still glowing hot as Alex uses the rear brake to steady the Dyno and/or slowdown.

[@markbeaulieu130]

No way you just said you're gunna give it a hand job!!😅 I love this guy

[@vincesnetterton]

Awesome win my friend… love the videos and your determination..

[@mtech1961]

This was Cathartic - lovely music and Milling after a crap day.

[@duncanb1981]

There's a tuned length in your lead in pipe to your expansion chamber between the exhaust port/ piston face and the cone. Depending on your preference in broadness power band it should be 6-11 x the diameter of the pipe. Seems to me you are approaching the right length. And that is why you got a sudden surprise gain in power. All the info is in a book entitled "Two stroke tuners handbook" by Gordon Jennings. Under the chapter on expansion chambers. No doubt you have probably read it. If not, there a PDFs of it if you can't get the hard copy. It's old. But still relevant. It also covers the ratio of pipe cross section to exhaust port/ opening.. that you may find helpful.

[@dreece2000]

Holy jumping shit balls Batman I was gonna try to purchase this book to have and to hold $199 But for free93 I’ll settle for the DL

[@tobiasburgin7265]

Its great to see that all the work is now worth

[@brianwaloweek6770]

Loved tweaking my 75 Yamaha RD350 using a Dremel,files, and sandpaper. And changing front and rear sprockets plus expansion chambers. Plus tuning the carbs. No luck with the electronic ing. Stuck with the points.

[@โนรีคอกเบิร์น]

This is the first time in 70 years that somebody has said something about ice engines that I didnt understand. Now I will have to watch it again to absorb the terms. Thank you.

[@SyberSqueegy]

Good video, I enjoyed your use of 'Smooth Jazz' during your machining time-lapses.

[@Nrgpack]

Yeeeeaaahhh, awesome!!! Big thanks Alex!!

[@putteslaintxtbks5166]

I'm happy to see some forward ground for you. I agree, work on as is with tuning and getting some benchmarks befor adding anymore variables and glory in you success for a time.

[@gadgetdeez7069]

I've been saying this the whole time. You are introducing too many variables and you are getting crap data as a result. You will dyno completely different numbers in 1st gear than you will in 6th gear. And ripping through the gears is no help. You're just getting a bunch of dirty non-useful data. You need to get a water brake, gear it down so your engine spins it within the recommended rpm range and stay consistent with ENGINE dynoing. Chassis dynoing when it comes to ENGINE R&D is nearly useless when you are doing ENGINE development. Chassis dyno is for tuning. Engine dyno is for engine development. Scientific method. You need a control (your initial run) and then expirement and analyze the results (later runs, engine mod only, all test procedures remaining the same).. as an added benefit, a water brake set up for engine development would take up far less room inside your shop than motorcycle chassis, The inertia dyno, ramps, fixtures etc. It would likely be a desktop setup. You're dealing with a 50cc, not a 7.0L V8... It makes sense.

[@davidgierke7582]

AH...another voice of reason. I have used water brake dynos (Go Power)-off and on- for more than 50 years, and have run them direct-drive at well over 20,000 rpm without cavitation problems. They're simple, reliable, and offer data repeatability, plus they're relatively inexpensive.

[@SL4US]

This. My mind is like his and constantly wanders and over complicates everything so i understand his predicament. He just needs a little more direction a simple written checklist would maybe even suffice

[@e34boat88]

hope he reads this.

[@_jdgeorge_]

This sounds like great advise

[@jonlambert321]

So what he is having fun and hasn't given up. You can always tell a Norwegian you just can't tell them much. Lol

[@buddyjames6064]

After the 100th time of seeing that bike torn down and reassembled I'm quite confident half your audience could do a build in their sleep. Love the show

[@jiminycricket9877]

Well done. Your perseverance is inspirational!

[@jeffharris4558]

Awesome! The motivation you needed, so good to see something going well for a change, definitely a win 🏆 Look forward to the next one 👏🏼👏🏼👏🏼

[@calebcrockett1085]

Just want to say thank you so much for this content, started watching you because I grew up riding old 2 stroke 80cc motorcycles and you’ve taught me more over the past couple years than I’d ever imagine knowing about how these things work lol

[@nathanwest4670]

Man you never cease to amaze me with your projects. I'm living in a tent right now and I 100% need a generator. Now I have a deep freeze outside that doesn't really need to run and doesn't run I'm not sure if the compressor is any good or not but I would love to make a 4-stroke motor out of it and then make a generator. I like this idea I just don't have the tools I'm outside. But I'm sure I can fashion something even if I have to use one of those two stroke bicycle motors to build a generator. Also I need to build an exhaust/ ventilation fan that's running on batteries. So for example a fan out of a old computer tower. Then when I'm running my propane heater in here I don't go to sleep then not wake up.

[@JeffreyPerrault-hk6xe]

Sorry to hear of your current living arrangements.. let's just say been there done that and worse.as far as a generator the cheapest most effective arrangement is a lawn mower engine horizontal or vertical shaft doesn't matter.Use the engine with a belt and pulley turning a GM "one wire alternator".these alternators are internally regulated hence the one wire.you can find one in a junkyard for $20-$25bucks the one wire is your positive the case is your negative.use the output 13.5-14 volts dc to power an inverter found for well under $50 from harbor freight or Walmart.If you hunt around you can find a lawnmower engine super cheap or perhaps free.You can build this for well under $100 and you will have 120 volts ac,to power whatever you want.also the output of the alternator will run an electric radiator fan also sourced from a junkyard.good luck

[@flakey7832]

Anything deviating from a round cross section is sub-optimal for fluid flow, regarding boundary layer, so the rounder the better, generally. Exceptions exist. Pumped for the content

[@wesseldriessen]

I might be stupid or blind, but I saw sparks coming from the rear sprockets(?) Right after 13:00 you can see some, and later on there are a lot more. Like I said, maybe in being stupid and missing something but still thought it might be worth telling

[@derf9465]

Sounds really crisp. Nice work.

[@robsrides5851]

i miss working on projects with this kind of passion. now im old a feeble so i live thru you :)

[@kluckluc]

This episode a win. Again! Congrates my man. It almost gets boring :D It will never be. Keep it up. Looking forward to the next

[@kluckluc]

Ps. Love the jazz tunes. What is it?

[@MatteoBaldi]

Nice to see progress, keep up the great work!

[@stuartbradbury9514]

I carnt be the only one that said hello an welcome back to my garage 😂

[@rhouser1280]

When I'm in forums looking for advice on my bike, I never know if I'm talking to a guy like this or someone who just learned the difference in 2 & 4 stroke and is really good at BS.

[@I.M.SofaKingdom]

I like Hughes motorized, L.A. Hoverbikes, and this guy. I've had these bikes long enough to know who's full of crap and who knows their shit. Don't let Keegans youth put you off. He's good, he won't steer you wrong.

[@abovegroundgarage]

Proud of this man. He’s come a long way.

[@hunnybunnysheavymetalmusic6542]

The most embarrassing way to lose a race is to leave the line on an empty fuel tank [HOP HOP HOP!] 🐰🐇

[@ronaldroberts9556]

A WIN!!! Most definitely! Am really pleased for you!👍👍🏴🏴󠁧󠁢󠁷󠁬󠁳󠁿

[@lucal6166]

So good to see this project coming togheter!!

[@whiplash2891]

Yes! The music's back! Thank you

[@jams_finest]

Finally we got the results 💯, now it's on to the testing and tuning

[@hunnybunnysheavymetalmusic6542]

You need a slide-trombone style exhaust so you can lengthen and shorten it based on the time of the exhaust port opening and closing. Should be something you can make out of dimensional tubing on your tooling there and adjust it based on the RPM through the crank sensor and a small spring return solenoid or even a linear motor and some kind of tiny computer like an Arduino or Raspberry. Set yourself a 'star-and-idle' point and then have it draw in shorter as the RPMs climb toward max RPM and if it is not adding any load or friction to the engine's output, it SHOULD allow you to super-precision tune your scavenging to reach the very max it can be.

[@dredrotten]

Good idea.

[@anrtrading8334]

thanks for that, I'm hooked on the idea

[@SkunkieDesignsElectronics]

"slippy pipes" have been used in top level Kart racing to great effect since the 1960's.

[@jamesgnarkill3112]

Heck yeah!!!! What an difference, way to go!!!!

[@jongonegone1262]

ITS ALL IN THE MACHINING COOOOLANT !!! ITS LOOKING SMOOOTH !!!

[@BaqerAlSarraf]

15:32 17057 RPM 😮👀

[@Diesr]

One of my stock outboards has 2 of those it’s a stock jhonson 15hp 1979 it’s tiny and mighty 😅

[@dayong-ul3tg]

you hand built an 18k rpm screamer!!!???? jeez i’ve been keeping up with you for like 2 years now..where you need improvement-your not afraid to move away from what has not been working. your awesome

[@victoryfirst2878]

How happy are you with your milling machine fella ?? How expensive was the mill ??

[@RobsanSugoides]

Greeting from Australia I have been following you for sometime now You are a cool bloke mate Salute ❤

[@CrAzZyTheCodingBoss]

11hp ??? Looooool for a 2 stroke??? I’m a channel as old as this??? With this name??? Your on the right track?? Loooool GL

[@malisinimicus4358]

I use to race Mx and Sx many years ago and did port and modify my own motors but nothing like what you are doing. I had this idea of installing a reed valve exhaust block onto the exhaust side which i never built but you have the skills to build one. The idea being for scavage balancing or being equal so as to match intake.

[@EarthSurferUSA]

1) Lots of heat there. Would need a special material or the reed valve that probably does not exist for the application. 2) It would block the " supercharging pipe effects" of a 2 stroke pipe, and lose about 40-45% of the power as the valve would be closed, stopping the pipes supercharging effect. As a guy who makes his living building 2-srokes, those are only my thoughts so far though. :)

[@malisinimicus4358]

Sorry, i didn't mention that the idea here would also be to eliminate the expansion chamber as you would now effectively have an exhaust valve. Stainless or spring steel should work

[@malisinimicus4358]

the machined or 3 D metalx printed rectangular exhaust reed block would morph into an oval and then into a round where straight wall pipe would then take exhaust gases away.

[@johnm3850]

This is one of the best small bore two stroke players on the web with so much info on basic tunning to learned for free.Now your high revving engine sounds bad with your timing modifications.

[@mikehutchinson9318]

Crankcase stuffer..increased pressure to intake fuel charge

[@caraame]

we used to be filing exhaust and petrol ports on our honda Placky 50's in the 1980's. we didnt have a clue but sometimes we increased the power or maybe it was in our heads.

[@alternatemusicaddict5226]

Smooth jazz and cnc noises really is a treat

[@VYXtreme]

Check the tire pressure in your rear tire - make sure its on point

[@AutoBeta2T]

Great work. I'm pleased you are getting there. The Denford Triac does a great job. 😊

[@oddingardleirvik4781]

Let us see your inventions in real action on the road please😊

[@jmckittrick1]

Great video. I've never seen a 50cc sport bike before, or really any 2 stroke sport bike. Very cool

[@un65tube]

I'm deeply impressed by your skills and the workshop equipment you have! Anyhow I was a little frightened when I saw the lace of your shoe swinging next to the fast spinning open gear next to your leg. I think you know about what could happen if your clothing gets into the chain... Many greetings from Germany and stay safe 🙂

[@gabrielpedrini]

Volviste amigo, ya extrañaba tus videos 💪

[@allenmcknight4757]

Well done continue to move forward

[@iwebChristophe]

This is definitly a WIN !!! Good job !

[@MarkHarders-ss4zk]

Excellent work, when done please detail changes. This could be a new baseline for HP application. Tks

[@73Bugman]

Hey there Mad Scientist. Checking your fuel tank by plucking it off the bike and shaking it, made my day. Congratulations on the positive results. I enjoy your work very much.🖖🏼👽

[@TeznaGFX]

5:54 anyone else xD

[@2STROKESTUFFING]

😁

[@13harward]

I have to say, i really admire what you do. You are one persistent and tenacious man, and knowing you've been going through a rough time recently makes it all the nore impressive, good on you. I don't even know you, but I'm still proud of you. 🙌🙌🤝🤝

[@carlosevfaj]

I just want to see this thing driving on the road, just a little bit