First Dyno Runs - Supercharged 50cc Two Stroke

[@2STROKESTUFFING]

Check NordVPN exclusive deal here nordvpn.com/2strokestuffing It's risk-free with a 30-day money back guarantee!

[@poorlydunbarvideos1472]

I need to know more about the boot attached to a stick please.

[@JoePage-j8z]

@@poorlydunbarvideos1472 (replying for the algo.) the shoe on a stick is for focusing. it's use is part of his other obsession (hobby) of video journalism.

[@fabiotiburzi]

A top fuel dragster mecbanic said that methanol and nitromethane burn so slowly that is common to have 40° of ignition advance

[@benjaminmateja4145]

Hello. You know....the exhaust IS Very important for 2 stroke. Why you don't take an exhaust ? Your works IS Amazing. I dont understand all but i liké that. PS: i like Bidalot engeenering.... It s thé best for me. I am French 😁😉🥳 Thanks And continue your Amazing works🙏🙏🙏🙏

[@billrandell4641]

I honestly couldn't make any sense of this latest video..which engine is going to Bonneville?? ..What video did I miss? What video has the Bonneville engine test results?? How much HP does the race engine produce?? ..WTF???...👍🗽🇺🇸

[@codeack101wlck]

I'm gonna be that guy, A reason I originally started watching was you were only of a few people who didn't put on distracting music as you worked on making or fixing things on the engines. Maybe it's just me but I enjoy the tool noises

[@ossanyberg]

I agree, don't need music. I prefer comments.

[@fredrickfiler121]

I find the music satisfying and I'm a 2 stroke fanatic and a ex criminal. To each thy own

[@mikahakkinen5651]

same hear.a like the tool and machine noise.

[@codeack101wlck]

@fredrickfiler121 My logic is that if I wanted to calm myself with music, I'd go listen to music. The selection is endless we're on KZbin after all, 2 strokes are music enough to my ears where it's all I need to hear.

[@nilsivanson4161]

The volume on 15:00 while speaking feels less invasive. But I don’t get it why there has to be music. 🎶 i watch Mx videos and it’s the same there. Now I do love this channel but when Mx video has music I just turn off the video. I feel disturbed. Maybe the problem lies with me but I appear to be in good company. Love these videos. Love the raw sound of machines and tools.

[@evilelf5967]

This is THE only channel i don't wince at the sponsor segment,guys earned it in my opinion,he puts the work in.bravo alex,been tuned in for what might be possibly 7 yrs?? still tuning in like an addict.

[@jimdieseldawg3435]

I hope you realise the simple joy that your videos bring due to your skillset, your persistence, your results, your bring-us-along-even-when-things-don’t-go-to-plan approach and your genuine humility. I find solace here, and I thank you for that. You deserve your Bonneville dream to become reality, and I wish you all the luck that I can spare. Thank you, sir 🙂

[@canadianoddy8504]

You need to hook up that dump valve exhaust to the exhaust extraction fan. You are going to poison yourself Alex. You have a family to look after.

[@davidcabrera1939]

Bump for safety

[@dietznutz1]

Am I an idiot I thought that released pressurised air not exhaust gas ?

[@dietznutz1]

Ah shit I see it now

[@carnage77]

Do you not see the respirator he is wearing? 🤦

[@Mrshotshell]

@@carnage77 like at 16:26 ?

[@Anonnymouse53]

Really phenomenal. Your journey into KZbin and this project has left a massive impression on me & I'm sure many more. Seeing how much hard work and focus is needed. We're back here cheering every win & furrowing our brows with every new challenge. Hands down the best channel on KZbin.

[@filipeferreira8187]

thats what adapt and overcome really is, the attention in details are definitely what drives my motivation, thank you for the contents you create just to entertain not only yourself but others

[@wouterdegroot3803]

Whoo hooo! Nothing broke. What a relief.🎉

[@Nazaca]

I don't even wait till the end of the video anymore, likes from the start! It's a good day when a stuffing video appears online! I admire you skills, patience, endless motivation and drive!

[@stephenfrancisvoros382]

Welcome back Alex, good to see your back on top of things and to see that blower is back in action, working well, looking forward to the next few month's, take care mate.

[@Supracrm]

You are my Fav on KZbin Respect

[@Kippo6969]

You should watch asoftaaja

[@kp-re8so]

I started watching you at the start of this project its insane how you exploded :D Love from Germany

[@mrwhips3623]

What is it like to live in Weimer 2.0?

[@djc7039]

Glad to see the Blower and Dyno back

[@Steves-Bikes]

Great vid Sir. Good luck with the sponsorship and I hope you have a fantastic time at Bonneville, I'm looking forward to seeing what you guys get up to.

[@charlescole-p9v]

You have unimaginable persistence on your journey. More power to you. I hope you achieve what you're working so hard to accomplish.

[@sekoivu]

That experimental two stroke is super! I like that brute force design. Have played with ideas of experimental two strokes myself, but in theory level only. I'm intetested in designs, patents and studies, based on recent and not so recent development of two strokes. Namely two stroke engine type is the most efficient internal combustion engine type this far. Large diesels work in ranges of over 50% thermal efficiency, and there are some recent patents and such. And then there are all small displacement race two strokes, and engines and designs like this brute force of yours. Your adventures are great to follow! There was very lively tradition in germany before ww2, when puch and dkw were winning small displacement motorcycle classes, and they had supercharged split single two strokes. There was guy whose name was Zoller; he was great two stroke specialist, guy who invented and engineered zoller vane supercharger, for example. They, Zoller et al, had supercharged two stroke in cars too, in voiture 1500cc class, and there were even larger displacement multicylinder engines, up to 16 cylinders. These all used that split cylinder design to minimize blow out mixture from exhaust port, which was achieved by various clever tricks in that split cylinder design and supercharging. Maybe you are familiar with these designs... Those were great engine endeavours, but unfortunately ww2 and later developments in racing (ie banning superchagers, untimely death of Zoller etc) kind of shut down the development of that branch of two strokes. There appeared different kinds from then on, but it would've been nice to see where that split design would have proceede, if not ww2 etc... Anyway, great to see that brute force alive again. It's great to watch your endeavours and inventions. Thanks for that content!

[@robbudden]

You do excellent ad reads. The ppe v internet pox was gold

[@DuckyFuzzer]

Found this channel looking for content on lost pla casting way back when and couldn't be happier your content has come a long long way and it shows

[@TheNumbers400]

1:27 min. I had a friend do just that. The drill gripped the sheet metal and opened up his hand in a way he never recovered from. Stay safe dude.

[@smokinamby]

Ugggh. Never thought about that before. Thanks for the heads up.

[@jonnybamber1772]

What’s with the dodgy music!!!! You don’t need music. We all love your videos because of the rawness of them. Your work and videos speak for themselves you don’t need music. It’s so great to see progress being made!!! We are all here for the journey and it’s so great to see you sticking with a route and getting results. You have got this mate. Can’t wait for boniville and at last seeing you getting the results and experience you have wanted!!!you have worked so hard and come so far. Fastest 50cc ever!!!!!!!!!!!!!!!!!!!

[@mrrooter601]

I dont mind background music usually, but I just dont think stuff with lyrics works for stuff like this.

[@m3chanist]

What's with the "We" you don't speak for anyone apart from yourself, you don't speak for me, that's for sure. I like the music.

[@mrrooter601]

@@m3chanist "we" can also refer to the majority, which is what it certainly seems like in this case.

[@m3chanist]

@@mrrooter601 What majority?

[@m3chanist]

@@mrrooter601 It seems that way does it. What majority, exactly? This video has 32K views, where is this greater than 16K majority?

[@unbentcrayfish]

Awesome to have the brute force back in action!

[@nashguy207]

So excited your going to Bonneville this year. I hope the weather is better this year than last year!

[@thebrain9384]

I love how you solve design problems. It takes skill, thought and common sense. You are in the high performance arena with this. I do have to say I haven't researched,but saw somewhere, that there's a cox single, normally aspirated, one cubic inch that makes 5 HP.

[@LegendaryGodKing]

If nordVPN sponsors his Bonneville trip, I'm signing up for life.

[@bruhmandude555]

Cant wait to install this inside of a go kart and drive this on an interstate

[@petertaylor6384]

The sheer community excitement when we see this thing ripping for speed. I'm happy for me and all of us. I can't imagine the feeling for Alex

[@theshippingcontainergarage]

Can't wait to see the dyno charts and pressure readouts!

[@yommmrr]

This has more power than my 90cc latest model chainsaw, and theres still more in it. Insane.

[@VyantQuijt]

Perfect, just came out of thegarage where I succesfully bastardised a bike part into a bike tool, now I get to watch this master

[@UndefException-cp6hu]

100% he's back. His uniform in place, and that sit.

[@drewlarson65]

Thanks for that song Alex, needed that now

[@m122Production]

Glad to see you with some new results. That's awesome!

[@guyredshaw1422]

“idle adjustment block”😂😂😂….you should sell them with your Bonneville logo on. Great progress and I’m excited for you👏

[@fullsendmarinedarwin7244]

Good to experiment with the format but didn’t love the vocal music in this one . Great work getting it running Nice again 👍

[@paultaylor9939]

I half expected you to be crying at the end of this,all the best on your quest cheers 🍻

[@bigaldart89]

Alex, you probably know this, but I will remind you anyway. You have a positive displacement blower. Because of this you can easily calculate airflow at any rpm. Since all air passes through your blower you can then calculate the fuel flow you need. I don't know how much boost you are making but as a guide, for straight methanol you need A/F around 3.9 below 20 psi as a starting point, for higher boost start at around 3.5. You will be pretty close and able to tune from there. With Nitromethane up to around 25% you need to be LEANER than straight methanol for best power. After that you need to be RICHER. As the percentage grows you need much more fuel, it is not linear. Work in LBS of Air, LBS of Fuel as Nitro is much denser than methanol. Volume won't get you very far. Loving the journey and best wishes for the Bonneville exploration.

[@RAWRMotorsports]

Glad to see the beast back on the dyno

[@AnonyMous-jf4lc]

One thing I just thought about, and I don't remember seeing it, was a basline test of the dyno with an engine that makes a known range of power. You can then at least know if your dyno is high, low, or just unreliable.

[@DavidGierke-nl1dl]

Good to see the brute-force engine up and running. Good job, Alex! I hope that your water-brake dyno is going to arrive soon, as the Prony-brake deal is an obvious loser at the horsepower levels you're working at. Best of everything concerning your Bonneville record attempt effort. I plan to attend Speed Week and cheer you on to a new record..

[@Mad4Tracks1]

I highly suggest you calibrate the Dyno correctly from now on, since you switched to being more systematic with everything. I refer to the intro at 21 seconds Two ways to do this, 1) You hang the calibration weight (the brake rotor and stuff) perfectly horizontal on the axis of the bearing. This way it is easy to measure the length of the moment arm. Or 2) keep the bracket as is, but only measure the horizontal distance from weight to the bearing center. The moment arm must be horizontal because gravity only works vertical and thus perpendicular to the moment arm Maybe your are correctly doing this, but you have done some many alterations already that it may be good to check. It is just basic trigonometry. I hope I don't come across as rude but I have seen you doing this for so long now, I really enjoy watching you and I sincerely hope you'll be successful in this journey :)

[@johntenhave1]

Great music. Clearly chosen with great care by a musician and artist. You are also the only creator who I do not fast forward when it comes to the sponsor message. Your videos are superbly filmed and a delight to watch. I learn something every time I watch.

[@andrebelliveau7857]

Be careful but what’s coming out of blow off valve could possibly ignite. It’s air and fuel being sprayed almost in your face. Don’t want you to get hurt. Find a way to pipe it either outside or some where that if it would ignite will not burn you (most importantly) or your garage. Keep up the great work

[@carnage77]

He was wearing a respirator 🤦

[@sijmen2670]

​@@carnage77 "Ignite"

[@jamesabbott5892]

Alex consider making the ignition timing adjustable while the engine is running that way you can fine tune while on the dyno or on the bike. Try to keep it as simple and light weight as possible

[@finnsk3]

You want to run a vacuum line to the top of the blow off valve from between the carb and blower. When you cut the throttle, the vacuum pulls the valve open. They work better with a blow through setup with a vacuum hose from after the carb to the top so that under throttle the possitive pressure helps hold the valve down then vacuum pulls it open when you shut the throttle. I run 40psi of boost on my daily driver and I blew the rubber diagram apart in my Turbosmart 50mm race port so the boost wasn't helping to hold the valve closed and I could only get to around 25psi just off the spring. tbh, I wouldn't even bother running a BOV because on a draw through carb setup I can't think of a good way to plumb it if you want to run high boost. Say you want to run 40psi, you are going to need a spring that will hold 40psi, then when you close the throttle, the carb is going to pull say 5psi so the blow off valve will open and vent down to 35psi then close. This is all because you can't run the boost to the top to help the spring stay closed because the boost doesn't stop when you cut throttle. Maybe someone knows a better way to plumb it? You could do it the way I have my blow off valve setup and that is electronically controlled with a solenoid valve. I run boost pressure to the top of the BOV then when the controller detects a sharp decrease in throttle it opens a valve venting the top of the BOV. All of this sounds overly complex for a roots blower though, I would just remove it entirely.

[@InFlamesOfSorrow]

Lets go! something to chill to!

[@aroncharlwood1777]

We need a 500cc version of this when you work out the magic formula

[@TheNumbers400]

The Brute Force engine fits in your carry on. Get it done and put it into your next land speed bike.

[@XelaSnikliw-fg8wu]

Rotax pretty much has the best designs for two strokes. Direct injection is paramount. The less rotating mass you have the quicker it'll be. Ported cylinder and crankcase. A tuned pipe is really important. A sliding pipe could give you better bottom and top end combined. Matching the air flow to the correct carb takes allot of science for a one off engine.

[@thedarkknight1971]

You DEFINITELY want to get/set up one of those more accurate hydro Dyno thingies... 😏

[@Synthomania]

Beste KZbin kanalen! 🤩💪🏼🏁

[@davonmulder8458]

I never clicked so fast!

[@mattyoung2880]

I’ve been waiting for this one !!!

[@Jellopie_]

I literally hung up a call to go watch😂😂

[@taylorhappe8026]

Same I look forward to his videos more then any other channel I subscribe to

[@Altprophet]

I get super excited to see his new videos.

[@livlive2919]

Same!

[@nilsivanson4161]

15:47 very excited ignores previously mentioned safety equipment and inhales toxic fumes. Can relate.

[@cryaesthetic3603]

Im gonna have to agree with the other guy, the music is kinda distracting from the brilliance

[@codeack101wlck]

We're both "that guy" ha

[@reyalPRON]

A little grease on the lens today Alex? Good to see you doing what you do best. Testing unknowns. THIS is what draws me in to your channel.

[@dominocweber9763]

No way! Bonneville speed week! That is in my home state. Ever saw the world’s fastest Indian? Great movie. Maybe this will be the world’s fastest 50cc 2t

[@jlo13800]

This will be making over 50 hp soon!

[@mtreis86]

That blow off valve needs its own exhaust ducting, big puffs out of it. We sure know its working now.

[@finnsk3]

Blow off valve shouldn't be opening really at all unless he dumps the throttle.

[@DetroitMicroSound]

Steel-It would definitely sponsor you. Use their Steel-It spray bombs to protect your bikes frame. There are a lot of reasons to use Steel-It to protect your equipment.

[@giscardrutten6896]

For you to reach your power goals, you’ll need to start recording the configurations of parts and for each change whether the change was positive, neutral or negative, together with the actual power number. At each point, neutral means that’s the maximum power at that configuration and different variables need to be considered to make more power. It will also allow you to go back to a base configuration that was successful, and if that configuration doesn’t give you the same result as previously recorded, it means something is broken/worn etc.. it will also allow your loyal audience to suggest specific changes as the too have a record of what the engine is made up of. Definitely time for the new dyno to get some consistency in the numbers, as without it, will be difficult to decide what the changes you make actually mean. Anyway, loving the progress!! .

[@jasonrobertson3330]

nice mid week surprise Alex!

[@michellatour150]

If those are VForce 3 reed cages, on dirt bikes they are often source of air leaks due to warped mating surfaces.

[@imadethisforposts]

I may be wrong, but I think your Dyno calibration will be off if the arm you hang the weight off of isn't perpendicular to gravity. I think the arm hanging down at an angle would cause the load cell to read lower than reality as it's split between a vertical and horizontal component. Love watching your work. Bonneville 2024!

[@jonfrost7996]

Alex I've been watching this since you had 930 followers if you're looking for financing start selling broken parts people love souvenirs . I would love a piece of your history. Hope to see you at Bonneville

[@acontadoquim]

Attention to those ebay manual boost controllers the T that comes with the kit never works, you just need to use the boost controller itself one hose comes from the boost pipe to the controller the outlet goes to the wastegate actuator, and the other hole in the controller is for the bypass.

[@ratbagirish2054]

Love the editing and Musik you're doing again!

[@PhunkBustA]

14:00 if you used a narrow wide sprocket, it should hold on better, no?

[@JustinMiales]

You might look into checking your back pressure on your exhaust system

[@obancameron]

Excellent video as usual.

[@Snake.br549]

You need your tuned pipe on there and you can try different pipes to adjust your torque curve can't tune your carburetor without the pipe and also fuel injection is the way to go with supercharging

[@how2not298]

Make a water box for the brake ☺️ and cool it down

[@martin-vv9lf]

whats the name of the song at the start? i like it.

[@janippa]

I have the Luigi versio of that Mario mug, so i guess we kinda brothers

[@sixdegrees6434]

The disc brake dyno idea will cause you a lot of pain. Please don’t persist with it. They were tried very briefly in the dawn of dynamometers and were quickly replaced with eddy current and water brake. Disc brakes are not designed for long duration, high load. It will get very hot, very quickly (as you witnessed), the pads will glaze and never give an accurate measurement. Please trust me on this one, you will tear your hair out.

[@johnpezaris6982]

AGREED!! We do not need Alex getting stuck in a rabbit hole of debugging yet another dyno again.

[@goranamcoff6235]

That mixture open-loop bleed is just power and fuel wasted. Ideally, you want to re-circulate the boost bleed between blower intake and the carb (recirculating it into carb intake will cause it to measure same air twice and go rich).

[@cryptsys]

if thats the amazon supercharger with plastic blades i would advise you to pull it apart and sand cast replacement fan blades. the plastic ones from this and the bigger one on amazon shatter and blow up engines.

[@n3lly260]

Babe wake up! New 2ss vid just dropped, and ITS DYNO TIME!

[@scrapeteel920]

If i show up in August id love to talk Chainsaw engines with you.

[@willemgjaltema2996]

When you can make a system like a lowman diesel than you can have low compression by low rotasion and high compresion at high rotasion when the engion os warm .

[@JR-vs4fy]

My friend and I I are pensioners now but about 50 years ago we trackraced and 1/4 miled 50cc. we expieriemented with compound loading. the offthrowing problem is resonance and length of the ducts Little longer or shorter an you lost Half the power ( btw we held for 3 month the world record 1/4 mile) although engendering background we saw thinkerers and capenters reach better results just not hindered by knowledge

[@HulluJanne]

Nice to see just small steps.

[@oires]

Submerge half of the disc rotor in water

[@andrewsmart2949]

well your going in the right direction,but take a leaf out of detroit diesels book and wet sump it and have no transfer in the crankcase and no reeds as the pistion itself blocks off the ports

[@kz6fittycent]

What if you had a water bath beneath the rotor, so it was able to remain cooled while you're testing? It should help with mitigating the heat and although you're going to get steam, it's probably going to be a little more consistent than a spritz of WD-40.

[@craigsmith4561]

another awesome clip Alex!. I've noticed the brakes on race trucks use a water spray jet to lower disc operating temps. possibly a battery powered backpack sprayer?.

[@JeffWoodwick]

An "adjustable, efficient CVT" could allow your bike to stay near optimum HP and RPM as you accelerate.

[@danielturner4152]

It's your channel Alex, I trust that you put the music that you want. Thanks for all the time you put in to do this. Best of luck in your endeavors

[@aka5.45]

Вы своего рода гений!

[@nerd1000ify]

I think you should recirculate anything that comes out of that blowoff valve back into the intake. It will save you a heap of fuel, and give enrichment at higher speeds that at worst you just adjust for with the jetting.

[@mikeford5106]

I doubt very much that the brake disc and caliper is "man enough" for the job, perhaps using a continous cooling water mist / spray may help ? ... perhaps adapting a 12v. car screen washer pump and some form of misting head outlet ?

[@timothymilam732]

Whose lovely voice is this you're teasing us with? I miss when you use to play the blues with all your videos, and I have to say that you have excellent taste in music. I remember when you came here to run the Salr, and it rained totally flooding the track out. Y'all cruised around in the RV for a good bit before you had to fly home.. You were definitely a lot younger than, and don't take it wrong, but you looked like you were barely 20 years old if they back then. Good luck with everything, and hope the Salt rewards you for the efforts you've put into your quest

[@motorizedbicyclenation53cu90]

5.8hp that’s it? Seen people running piston port 50cc bicycle engines hit higher.

[@nickbowker5134]

Which ones?

[@codeack101wlck]

How long did they take to dial it in, because with this specific setup he's running I've only seen this single dyno run out of this engine barely a baseline

[@michaelfowler8289]

If I were Bill Gates or Elon musk I would completely and totally sponsor you❤

[@randomname4726]

Elon Musk is a moron.

[@BOBLAF88]

Would not the lack of reflecting pressure from the expansion chamber mess with the pressure in the crank and the reeds?🤔

[@TedTucholski]

OK, I have an idea. Take one of your used chains and divide it into 4 link chunks. Then sell the chunks for $5 as a souvenir of your project to get to Bonneville. How much do you think the postage would cost? I would contribute.

[@wfomph1435]

this is the best thing on the internet .......T H A N X ......

[@NZrider100]

You don't need lubricant on your dyno brake. You don't need to reduce friction, you need to remove heat from the disc faster. Can you put a makeshift water bath on the bottom half of the disc with a shroud to capture and duct water spray back into the bath?

[@rcpmac]

I don’t know a lot about this but my understanding of 2 strokes is much of the performance results from the exhaust system back pressure. How can you dump without it?

[@68f100ranger]

you should plumb the "wastegate" back to the inlet of the supercharger for a few reasons. first it wont be wasting fuel, because its being put right back into the intake. second, no explosion hazard from the raw atomized fuel thats coming out. third, its how the OEMs do it on factory supercharged vehicles. just some food for thought.

[@finnsk3]

It would need to recirc between the carb and charger to not add additional fuel to the already mixed fuel which isn't really a good option. OEMs don't run draw through carb and blow off valves so the BOV vent doesn't have fuel in it. He really should just not run a blow off vavle, it's not needed for this application. It's not a street bike.

[@68f100ranger]

@@finnsk3 nothing will add fuel if it's routed around the supercharger. The airflow going back to the inlet will take the place of the airflow going through the carb. So the afr will still be fine. He does still need that to keep from over boosting. All superchargers will have some form of boost control. Some change pulley ratios so max boost happens at or near redline. What you are saying would be like running a turbo with no waste gate.

[@finnsk3]

@@68f100ranger You just repeated what I said "It would need to recirc between the carb and charger to not add additional fuel".

[@68f100ranger]

@@finnsk3 reread my first post before you come at me. I said the inlet of the supercharger, not carb. If you put it before the carb then yes it would add more fuel as it's going through the carb twice. It has to go between the carb and supercharger to prevent that.

[@finnsk3]

@@68f100ranger that's exactly what I said though.. I said between the carb and charger. Positive displacement superchargers really don't need bypass valves, they didn't even exist until around the 90s because they need to be electronically controlled and opened based on throttle position. They exist to reduce heat buildup at part throttle which this engine isn't designed for cruising at part throttle. With out a solenoid valve there is no good way to control the valve when the TB/carb is before the supercharger. Think about a V8 from the 70s with a big positive displacement charger on top, with a carb or 2 on top of that. Where is the BOV in this situation? there isn't one.

[@trev6783]

8hp is still impressive for a 50cc. That would be equivalent to over 300hp on a 4 cyl. If you can get even more out of that little guy it would be pretty crazy.

[@larrythompson2967]

You may want to try some dry graphite on your disk brake? No smoke, stays on, and loves the heat.

[@Bayuhutamamotor]

sangat bermanfaat sekali sharing nya bagus sekali menambah pengetahuan