THE Most Powerful Two Stroke - Back at it! + Replying to comments

[@totalutternutter]

Drinking whiskey from a laboratory beaker instead of a shot glass means it's scientific research

[@2STROKESTUFFING]

👍 😁

[@manoo422]

Hes not 'drinking' the Whisky, hes testing it, obviously.

[@mrolsen6987]

Yeah that's one of the things I Love with this channel! Always Whiskey or rom in a labratory cup near by when the Hard problems should be explained😂😂👍🤘

[@Churchill250267]

It’s a concept!

[@abdeljalilpr2033]

-_-

[@nickb9563]

Good luck and see you at the flats next year! -Fellow 50cc class competitor ;^)

[@2STROKESTUFFING]

Awesome!

[@5ecret5quirrel]

It seems that it was productive to make the US trip for reconnaissance reasons. You will be much more prepared and relaxed next year. You still have a lot of simultaneous variable to work out in the meantime. We're here rooting for you, and we're grateful you are sharing so much of the project with us. Skål. :D

[@Bouwentjes]

Why not use two injectors and let them fire after each other. Like it is a two cilinder basically. This would half the injector rpm

[@daszieher]

My thoughts, exactly. He should have a cfd analysis to time the alternating injections into the air moving to the transfer ports. However at 19k rpm and methanol, you are basically dumping continuously anyway.

[@andrewskingsley4187]

My thoughts exactly, you would then be running them within normal rev ranges !

[@rrd675]

That would not solve the problem of injector duration and timing performance @ 19krpm.

[@friggyfrig123]

Staged injection. It will work

[@nmsmitto]

Yes. The computer needs to think it’s a 2 cyl 4t engine and it will fire one injector per revolution.

[@boazruis913]

Have you ever thought about writing a book just like Graham bell on your innovations such as the 100percent bore exhaust port and the open intake, I know I would surely buy it

[@GO-FAST_Racing]

Vintage model airplane engines among others did have this form of exhaust port.

[@blind8686]

This is some next level stuff! The piston, the cylinder and the mad crankcase design with dual intake. Love how much inovation you put in it! Very interesting!

[@deanrobert8674]

Not sure if your near a "RC Hobbies store" but some shops buy in bulk all off your fuel needs plus fuel additives, it maybe some help with carburetor or Perry's fuel pumps. Never a dull minute with your 50cc progression thanks mate.

[@verttiwahlberg]

Would love these kind of videos in the future, keep the project up! respect from moped-enthusiast in Finland

[@teammothersoxer4655]

Hi, Just like you, I've been told 2S injection is really difficult. But I never follow any advice :D I designed an arduino based EFI for 50cc and it works very good at my max rpm ~14500RPM. I can't say for 19K RPM but I tested injectors up to simulated 20K, it seems to work properly. The thing is that you need a big injector. I started with 140cc/min injector (original CBR125) but it went over 90% duty cycle on a 50cc. Now I'm using a 200cc/min and it's OK. In the internet people usually say it's too big because it won't be accurate enough at low RPM (due to insufficient opening time to deliver a small amount of fuel). Actually my engine has never had such a good idle with that injector. Anyway, do not listen people who never tried and just do it as you always do ! Good luck !

[@travisnewbold9975]

Thanks for that amigo. I enjoyed you answering comments! And all that talk of a gaping intake hole and screwing the pulse has me so excited I am headed to the camper.

[@2STROKESTUFFING]

😂 👍

[@bananaman9921]

Cant wait to see that injection setup done. Been wanting to do it myself just not much out there on it. So excited to see this.

[@barris1233]

Same dude

[@andydelarue9344]

The sound is the best, there is nothing better than a highly tuned angry two stroke, love your work

[@bassjumpblues3631]

You are one serious engineer, that covers all your bases. Keep up your great work.

[@Pascal_Robert--Rc_Creations]

2:47 Traxxas offers 33% nitromethane, im sure they ship in norway, its an international company

[@Lord_Verminaard]

So like an electronically controled version of Bosch K-jet or CIS. Very cool! I have no doubt in my mind you will break some records with this thing. Best of luck with you!

[@snikwad003]

Without the flappy plate thank God

[@MyLonewolf25]

Hillborn constant injection

[@liamarthur7488]

Dude! Those are some incredible concepts, i love these vids, always thinking outside the box, keep em coming!

[@sumkunt0r]

Ignore the haters, a record is a record! go for it my friend 👍

[@wayne1959]

You sir are a lucky guy..living in one of the nicest countries in the world and being able to build and chase your dreams....i am very envious of it all...My niece and family live in Stavanger ..I will visit one day hopefully.

[@ruikazane5123]

That concept on a valveless engine can actually work. If the pulses are lined to each other, which I expect to be a steady stream of air at 19 000 RPM. That means you have to close the open intake when you are going up to speed before that. And must close the carburetor when you will open the intakes. I would recommend to put your injection system along your intake trumpet, to encourage spray(because you will do constant injection), and ensures your air has oil/fuel in it(makes air a lubricant) and is simpler, does not need special setup for your crankcase. The issue here is operating injector in constantly open(like power jet) is the pressure. You would need to calculate pressure(negative) in the crank at the RPM range you are using the engine, and adjust the fuel/lube delivery as needed. Since it is set up on the velocity stacks(trumpets) there is easier measurement of AFR. And about setting up cooling, I would like to recommend to weight up the front half of the frame in order to inhibit front-end lift(aka wheelie) and to make the rear tire push into the load. It will be running a straight line, so you can also try lighter rims and such in order to reduce inertial lag(which makes reaching top speed bit longer due to rotating mass). Can also help with slowing down, if needed. About the reciprocal mass, can it safely do 19 000 or more RPM? Balancing would be great, and add the CVT drive on balancing to quell some oscillations that may happen(unlikely).

[@Grazzo77]

Looking forward to it! Will be great to see it go full speed next year.

[@deantubeful]

I Look forward to your progress updates. I think you deserve the record and could get it. Considering you are also a busy family man is impressive . Long may you continue the good sruffings and the odd drink.

[@lyon406]

What about direct injection? With the size of the crankcase you can get away with a dump system. Be careful of the nitro in the crankcase. Make sure your ignition box is grounded to the engine.

[@Baldys_projects]

Thanks for the update🚲💨

[@E34RRT]

Im new on this channel but im sure there is a injector solution for you if you think of diesel engines they spray 7small cycles before the real big spray. And for the other side i would build it with direct inhection with mechanical pump. Keep it up! 👍

[@DrZoidbergism]

Direct injection would mean you'd need to inject oil separately in the crank case which would mean even more injectors.

[@paultinwell5557]

I believe you mean a piezoelectric driven injector rather than solenoid driven. Yes, they're much faster opening and closing, dramatically reduce dribble and greatly increase accuracy of metering... but finding an injector with the necessary flow rate to run on methanol is likely to be exceptionally difficult. Not to mention the difficulty finding an aftermarket ÉCU that'll drive it. Not impossible of course with some device between the injector and conventional ÉCU that can drive the piezo, but that's a pretty specialized subject with few published data. Better to focus on the engine development, where there are more than many problems to address already!

[@NowAndyPlays]

a diesiel injector that sprays 7 times every 2 rotations at max maybe 5000 rpm would probably be enough for a two stoke at 18000 rpm if you're lucky

[@E34RRT]

DrZoidbergism im not sure but i think they can stand the oil ?? 🙄 but im sure if you have dollars to spend they will manufacture one thath will do the job👍

[@E34RRT]

Im glad with the positive people here nice to throw arround the ideas.👍

[@daVidFonda]

You're passionate and make us want to follow your story !

[@DeWoodysShop]

Those carbs are for the yamaha KT100 normally, It should provide more than enough fuel and air to get you to rpm.

[@2STROKESTUFFING]

👍 😁

[@jamesjrd250]

Thanks for making these videos i live in tooele ut its 60miles to wendover i am a two stroke fan and have seen all your videos you will have more luck with weather in August next year i will bring you a bottle of rum keep up the good work

[@Springfield-1903]

Ditto to the bottle of rum part! I'm up in Ogden and plan on making the trip out to watch this guy succeed!

[@derknobit2616]

Using a nos style fogger for fuel would be a smart move not only will you be able to ajust fuel flow from the pump you could quickly change jets. You could also drill into the main flow cavity and tap it for the jet type you normally have around just a idea

[@2STROKESTUFFING]

Awesome idea!

[@RenaeRacer]

Thank you for beeing back in the garage!

[@harambeexpress]

I was wondering about the weight reduction. Thanks for answering that clearly.

[@ewetoobz3840]

I had the same question years ago, one of the looong time racers (Keith Turk) said they added weight a lot of times for stability and traction. IIRC, the Camaro they ran (run?) was close to 4800 pounds, a far cry from the 3400 it started out life as.

[@timdryden3778]

ROCK ON ! HOPE FOR THE BEST FOR THE RECORD, THE BIKE , AND YOU.

[@deanhepworth5638]

I much prefere the bench video / chat with a dyno than out and about. I enjoy your ideas. Good luck with the build

[@MotoRod1]

What a fantastic video series. Congratulations on your first attempt, well done.

[@luckyrookie46]

If the open inlet system doesn’t work you could always revert to a belt driven rotary valve .....I’ve seen these used to keep the inlet inline the the crank centre this was used in 125 gp in the 2 stroke era and quite successfully .....just an idea

[@Tedroy]

Enjoyed the trip to Bonneville. I used to run motos around out at El Mirage in my teens. Love the channel. Go get 'em homie!

[@FredsRandomFinds]

Weight is actually a good idea to an extent in landspeed racing as it can help fight wheelspin which can be a pain..

[@Skaadi89]

Lookin good i like the duel fuel/ duel stage intake idea look forward to see this running

[@twopsycle9778]

That upside down cylinder arrangement just seems like trouble waiting to happen with hydrolock with fuel/oil from injector pump problems. Maybe a breakaway "freeze plug" that contains compression pressure, but would fail at higher pressures to relieve hydrolocked cyllinder under a heavy starting foot in a big boot?

[@oliverscorsim]

I love this idea for injection. Why not add a rotary drum for fuel timing and even ramping the pressure up at the injectors? At that point i must ask why not direct injection? I hear it has massive benifits for two strokes.

[@HochstartHarry]

Wow...this is incredible... And im out here still putting bigger/better cylinders and carbs on 40 year old soviet 2 strokes ...plain awsome brother

[@787brx8]

I advance the ignition timing so that peak cylinder pressure happens at TDC. Makes engines run much more efficient and have A little more power. Engines need my prototype to do this. It's like using A very high octane fuel in your engines.

[@Realryancurry]

Nitromethane contains nitric and sulfuric acid, all parts that come in contact with that fuel must be plated (nickel silicon carbide). Can’t run the carburetor with a mono propellant can’t stop engine from running

[@Realryancurry]

Or perhaps make a way to close off the carburetor completely

[@snapst]

Where did you find this about Sulfuric and Nitric acid impurity? A quick google didn't support this info. Nitric acid from production cycle should be neutralized? As far as MSDS of chemical reagent goes no acids should be in the mixture. However if you are speaking about nitro-methane after oxidation might produce nitric acid. Sulfuric acid seems unlikely, cause sulfur poisons catalysts and would be unlikely fuel supplement. That is why currently you have to be below 4ppb S in fuels.. Maybe it depends on the suplier?

[@dfjelddalen]

Let’s all the concepts! 🤘This will be a fun winter.

[@roostergaming8549]

Sorry if this has been brought up already, but have you considered a carbon fiber piston? They do not expand as much from heat allowing for much tighter bore tolerance making the ring unnecessary. Much lighter also. There was a company (On the line Racing, I think it was)that sold them here in the U.S. , but I don't think they are around anymore. If I remember correctly they were actually made for them by an Italian company that (as far as I know) is still around. Just giving you an alternative in case the trapped ring design gives you trouble. I have no doubt that you will hold world record one day. Just keep tinkering & testing!

[@SpeedofCheeseRacing]

WoooT! I am watching this injection plan closely. This is good.

[@AdieSuryaman]

Sepertinya sangat sulit jika menggunakan injeksi pada motor 2tak.saya selalu menunggu kejutan om bule ini. Lanjut om.

[@Henrik.Yngvesson]

Get some studded tires and come to Speed Weekend in Årsunda in Sweden on ice.

[@dshiznit148]

$$$$$$$$$$

[@3_Phase]

Just a idea, It might be more accurate and responsive to control the fuel flow with a solenoid valve and a pwm signal. Trying to control the fuel flow and pressure accurately with the pump pwm might be tricky otherwise.

[@2STROKESTUFFING]

👍 I'm actually going to use methanol/water injection parts, and a pwm fast solenoid.

[@DeliciousDeBlair]

Just happy you are still developing this really cutting edge work, personally never asked for a reply, never will unless I am asking something extremely technical. Also, to that dude complaining about you drinking, needs to mind their own judgmental business.

[@Team_MFH]

You explain things very well thank you.

[@codelicious6590]

Nineteen?!?!? Holy sheep shit Batman! I cant wait to see that! I was disappointed we didn't get to see very much footage of the machine running closer to top speed in the last vid; we saw you taking off a few times but by the time you really got it wound up you were outta sight. Good luck man.

[@Gidanski]

Mount the injector at the end of the trumpet? Longer time for the fuel and air to mix and and hopefully should result in a more homogeneous intake charge. Good enough for F1 so should be good enough for the the speed whacker!

[@JbassPlayer28]

You could increase pwm frequency a lot to get a more homogenous mixture. May as well do some spray tests with injectors and see what the upper limit is for frequency

[@lengaming1651]

Finally had been waiting for this!

[@michaelthomas788]

Also methanol alcohol and nitromethane have a short short shelf life because they tend to pull water from the atmosphere into the fuel I know most top fuel dragsters by the fuel the day of the drag race for that weekend

[@xenon91]

What do you think about the f1 shower type injection? And new diesels use piezo injectors indeed. They fire around 5 times a stroke.

[@Flippppppper]

*Up to 8 times

[@ruikazane5123]

I call the shower type injection as the power jet. As it does the same thing on carbs, but with more flow!

[@acurarl9929]

You should keep the radiator for testing an tuning then change it over to the ice bagh

[@rogerb8558]

its just like a pipe on both ends,this works about time you got back at it.

[@rogerb8558]

2 strokes ran this way in the early days on farm engines ,intake and exh differential,everything old is new again lol.

[@mikesrcgarage]

Wishes of success on this adventure! Sad to say even speed week this year was a wash running on a shortened course. I think you would like my mountain bike it runs a 55cc 2 stroke that is from one of my large scale Rc airplanes! Have a look if you can manage to find the time. Thank you for sharing this with all of us.

[@titahibayflier3160]

Whats the most powerful bike you've ridden? Any thought in getting a motorcycle licence for large capacity bikes?

[@edgar9651]

I don't think riding on a big bike on streets has much in common with riding a small bike just straight ahead.

[@AuMechanic]

Older FI systems were full time injection anyway as well as Drag engines. The only reason you need to fire injectors is for fine control over a wide engine speed range to ensure the engine meets emission standards...aaaaand, I don't reckon you'll need to be concerned about that. Re intake valve question, some people forget that the transfer ports are the equivalent of intake valves to the cylinder, the reed or disc valve or piston is only the "valve" to the crankcase.

[@barris1233]

Keep up the great work dude, take the time that you need!

[@kingpolo86]

drinking for thinking. best ideas when i am drunk. badest start with hold my beer, best one hold my rum.

[@annahaverkamp5820]

Try regulating fuel flow by pressure. No pulsating and more homogeneous mixture. Like older style mechanical continuous injection systems.

[@jjhack3r]

Sounds like it's gonna be one mad machine!

[@snapst]

no - valve. so just for fun you can call it a ram-jet twostroke :D

[@xx98justmeify]

It's more like a pulse jet

[@snapst]

@@xx98justmeify yes, that would be a better comparison to the frequency and sub supersonic behavior. I mixed up the valveless jet concepts. atleast I didn't write scramjet as a final post :D. thanks.

[@clone4211]

@@snapst That's an interesting point. Is a 50cc two-stoke engine still a 50cc engine if the crankcase/combustion chamber is open to atmosphere and operates as a pulse jet.

[@snapst]

@@clone4211 I would think that, while the piston is pushed in the 50cc displacement chamber it is no mater what is the pressure before the cylinder. As turbo engines are still called the same liter engines. However if there would be an afterburner...

[@teotwawki_je]

I've often thought a generator (with fixed gearing as appropriate) would be ideal for a 'narrow bandwidth' tuned 2-stroke. Maybe driving an electric motor if the overall efficiency was better than a CVT.

[@Frank-Thoresen]

The version 2 engine is getting really advanced

[@cadenfinley5990]

Dude its so fucking crazy watching your brain work💯keep up the good work man

[@panikos8001]

Hello.. Have you ever thought about to press or to boost or turbo mix fuel on the ignition chamber with intercooler. To get more fuel as far is cold and under pressure.

[@andli461]

Really like the crank case design! Especially the “inlet tract to transfers” transition is very nicely executed and looks well modeled. 👌 Regarding cluttered 3D-models it just sounds like any other professional design engineer. 😆 With experience some of it goes away, but not all. 🤦‍♂️ Don’t be afraid to take a “clean sheet of paper” when the model starts to clutter up and start all over again. It’s sounds really tedious but with a god reference/skeleton model that drives the main geometries and details, it’s worth it big time and often faster. A more stable and bug free model is a nice side effect. Good luck! Great to hear the chassis, that I was a bit critical about certain areas, worked well. 👍 With a couple of parts falling of I’m sure you will have a overall look to the frame to find out any structural issues. Even if the limited amount of running time makes it rather unlikely.

[@GO-FAST_Racing]

First thought pertains to that edge on the top of the removeable dome it has a relatively sharp edge and may crack. Looks cool though

[@manoo422]

Have you decided to use a steel liner yet? Until you get the cylinder design complete then send out to get the final barrel chromed?

[@ossanyberg]

Watch his old videos. Alex does the nicasil himself!

[@manoo422]

@@ossanyberg I know that, and its never worked satisfactorily once, which is exactly why he didnt go Bonneville with it.

[@manoo422]

@Eddie Hitler How did he know not to take his Nikasil barrel because Bonneville would be rained off...you clown. If you had two brain cells to rub together you would have known he took a completely different engine.

[@andrewnegri4678]

great stuff love following

[@tofiktofik1076]

nice i like your style in you project ,keep growing

[@Tom-Lahaye]

I'm very curious how your new setup is going to work, ecpecialy how the open intake will perform at other than optimal rpm, lubrication in the crankcase with open intake and fuel control. It's quite a deviation from the traditionaly followed route in 50cc 2 stroke world, and is a testimony of willpower to succeed.

[@gallupcustomknives2293]

Excellent work! I’m curious though about the open inlet trumpet, how will it be closed off during the carburetor warm up stage? Otherwise it would act like a gigantic vacuum leak no? A quick solution would be a simple butterfly, like an automotive fuel injection throttle body, except without an idle circuit built in, as that will be coming from your carburetor. Just a flat butterfly with a straight rod, say 5mm diameter, with a 2.5-3mm thick brass butterfly plate. Just need a stop at WOT, could even be controlled by a small solenoid or servo to have ‘on’ and ‘off’ settings, with no spring needed for return to closed position, as it would be electronically held closed when not using the WOT circuit. Your thoughts? Keep up the amazing work!

[@2STROKESTUFFING]

Look closely at the model and you can spot a guillotine valve between the case and intake duct.

[@gallupcustomknives2293]

Ah yes! Great minds... something something... you just showed it so quickly I didn’t notice. Anyway, keep up the amazing progress! You’ve got me thinking yet again what I’ve got laying around that I could rip apart and try to reinvent... my Yamaha GT80 is calling my name just begging to be completely reborn as a land speed creation...

[@ildkild]

i think that continious injection by pressure controll is probably not going to give you enough flow range, i think you should still look towards using injectors.(maby try pwm on them or using two or more different size injectors)

[@davelowman3574]

The piston and ports concept is called a slide valve in the US, really old like 1930's on some 4 strokes had slide valves, also the people being critical of you for anything are idiots. Glad your channel is doing so well.

[@ricksktk]

Wow... just have found your channel here and can´t stop to watch! Fantastic job! It´s so good notice that there is more lunatics like us around the world! hahahaha... very good Budy!! I have my own project here (but 4 strokes motorbike) and maybe we meet some day at Bonneville! Greetings from Brazil.

[@lunkydog]

Hilborn was what you were thinking of.

[@2STROKESTUFFING]

Yep!

[@nicolasandersen7574]

Just tell them the price of whisky in Norway

[@gjestbaardsen5269]

If he won't I will. I don't know about rum, but I know whisky. Alex drinks single malt whisky, and the one I think I've seen in one or more of his videos is Lagavulin 16 YO which has been in the standard assortment at the Vinmonopolet (federal Wine Monopoly - the only legit place to get booze) since before I got into whisky about 15 years ago. Today a 70 cl standard bottle of Lagavulin 16 YO costs ~730 NO Kroner which (at the time of posting this) equals almost 80 US Dollars, over 60 GB Pounds, and over 70 Euro. The cheapest 70 cl standard bottle of vodka costs ~285 NO Kroner which equals about 31 US Dollars, 24 GB Pounds and 28 Euro. He could also probably easily get smuggled goods or quality moonshine for much less. The guy works in a kindergarten and has kids to support. If he was an alcoholic, he would not be able to afford drinking such expensive booze. Case closed.

[@snikwad003]

This man needs to build a still and make his own holy shit

[@nicolasandersen7574]

Gjest Baardsen thanks i didnt know the Price in norway but Im from Denmark and have a buddy who worked in norway so i knew it was expensive

[@marcwire9332]

I worry about the air fuel tuning, maybe you could use dual injection systems with an arduino running a flip flop system for the pick up(takes the signal then triggers one injector then the other), this would reduce the injector demand down to 8,500 rpm per injector and allow you to tune the air fuel better, might save a few pistons and barrels???

[@urospetrovic5228]

Finally you are getting to the point, leaving over complicating behind you - that is what making problems - you are trying to brain all things but perfect is simple - not complicated !!! Cheers

[@billjacobs8035]

Look into using PDM rather than PWM to fire fuel injection. Signals are shorter without having to filter out noise which will cause missfire. My 2c 😏

[@jasonbirch1182]

Like BOSCH CIS injection. Maybe one of those injectors would work. They pop at 55psi or so.

[@Kowalamaster]

I have been wondering why no one made a con-rod like that, Now ive finally seen one. XD

[@Skaadi89]

Been thinking a lot on this. If the injectors can't keep up on their own how about programming it like a 2 cylinder running at 8000 rpm with 2 injectors cause they are only supplying a single cylinder they would alternate and should pulse properly for a single cylinder at 19,000 rpm

[@afleetcommand]

You familiar with Husqvarna's Autotune carb/ignition setups? Kind of a hybrid developed on your side of the planet and while certainly not capable of fueling something making the power you aspire to...maybe multiples. But the concept might be something u can replicate or use. They have a solenoid operated control valve in the carburetor...and have a very simple feed back loop between throttle position, ignition (rpms), and carb temp (not important). Has effectively three conditions it deals with, Starting, Idle/low rpm, 80 percent or more throttle position. In the throttle open condition it does a lean out test for 5-6 revolutions at predefined time intervals.....shuts the fuel valve and if during it's 6 revolution test the motor picks up RPM's, the mixture was rich, if the motor slows down the mixture was lean. The mixture is controlled by that solenoid operated valve "cycling" open and shut effecting supply to the carb...needs more fuel it stays open longer in the cyclical pattern, if the saw (these are chainsaws) needs less based on the "lean out" test that valve stays closed longer...so always trying to get max RPM's under load. They are rev limited for the different saw applications, one being 16,000 rpms, They have a little memory where the history of those operation conditions are stored (fuel settings)...so we can see where the mixture was along with a few other parameters. Reason I ask is something along those lines feeding fuel to what ever your "mixing" device is might be a way to keep the mixture in the crank case where you want, using that type of logic. And the motor just draws what it needs based on your mechanism for feeding the combustion chamber from that "pool" or reservoir in the crank case.

[@jarikinnunen1718]

I have idea for compressed engine which not have power loss in compressor and limitless pressure. It`s suitable for drag race. I have no time or money to do it.

[@niklashumberg8939]

Maybe you can build a engine dyno using the same technic as your dyno. it should be easier to get some accurate hp readings and it would be way more practical for your prototype facility :)

[@2STROKESTUFFING]

Yes! Plan is to fabricatet and mount an engine dyno attachment to the existing unit.

[@watahyahknow]

if you need to fire a lot of fuel in a short period of time you need a lot or HUGE injectors and high fuelpressure , maibe run two systems and do one side per revolution (gives the systems about half pulses and more change to build up the pressure needed think you can get the tank to have a dimple for the chin pushing the air over the top of the helmet and maibe some widening toward the knees , you need a tank for the icecooling , and i dont think they have a maximum size for a tank and you can make an interesting fairing from it (not passing the body of the racer but more like an arow point in front of the rider) about building up cilinders with nickasil . friend of mine repaired high performance kreidler cilinders , he did that by turning down the fins and a lot of the outer part of a stock cilinder to a cilinder with about 3 or 4 mm wall thickness (aluminium with a nickasil coating) then reamed out the high performance cilinder and presfitted the new cilinder before opening up the ports to the ports of the hp cilinder , worked pretty good actually and mahle is known for making high quallity cilinders with the nickasil coating might not be best thermical wize but you can do a lot of work to the ports before covering them up with pressing in the cilinder might even be possible to machine a billet cilinder that way

[@2STROKESTUFFING]

If I needed more than WOT at constant rpm/load that would be the way to go!

[@mathieumorin666]

If you to make it with injection, you should put 2 injectors so they would be activated 1 / 2 of the time/rpm

[@ryanharriss7950]

I'm re-watching some of your videos. Had a thought... what about direct injection with two injectors, each switches half of the duty cycle. Speeduino can handle a dual injection system on a single cylinder. Just a thought. Best of luck. 👍

[@koekcoek]

Just thinking out loud. Maybe an injector (pre combustion) chamber would work? And a tip maybe you can get some ideas of the big 2 stroke engines they use on board ships. Have worked with them myself and most is also working on small gasoline engines. An a completly out of thr box idea would be to great a big exhaust port with valve in top part of cilinder and injection🤔 than you can go turbo easier something i still want to try with 50cc

[@diegobacchi]

i didn't understand how can it work without a valve. the crank will alwais be open or what?

[@rocpile1141]

Great work, thanks for the video!!

[@Hollaendaren]

Looking forward to the fuel injection testing! I'm still trying to work out if you're going to need the world's smallest injector because you can't pulse it, or if it won't be too bad because you'll be at full throttle all the time and with nitromethane you'll need lots of fuel too. Curious to find out!

[@2STROKESTUFFING]

First attempt will be with parts from a pwm controlled water/methanol injection kit. 100ish psi + 1mm nozzle should give me ~ 500cc/minute. On paper this should work fine. On paper...

[@matej.ogrinec]

Fusion is a yunger brother of 3D modeling software Inventor. Give it a try. Fusion is based on it. The workflow in Inventor is faster and more organized than Fusion. I am using Inventor for couple of years. I am using allso Fusion for programing the milling programs and I strugle when modeling in Fusion. Steps when creating something are realy long. In Inventor you use the same features. They are just more "reachable" in Inventor. Give it a try. You can thank me later. Best regards from Slovenia.

[@2STROKESTUFFING]

Thanks, I should!