Fly-by-Wire - Most Powerful Two Stroke Ever 

Is it just me or is the production value been through the roof lately? Nice stuff!

Good quality rc servo's have high torque and fast response times,they'll also be ball raced for smooth action and have metal gears , cheap ones have plastic gears and bushings which can wear quite quickly and strip gears

When you say "shouldn't be that much of a problem". Save that one clip and edit it in Every time you run into a problem. Be famous last words. Love your work

Funny how youtube automatically cuts the video quality down to 240p but plays every ad at 1080p...

Hahaha, so what am I doing in your window? :)

You are the most determined person on the two stroke engine. I look forward to see you at the flats break records for sure. Good luck fella.

A push/pull cable system might be worth trying. You'd be less reliant on springs returning the slide too.

dude ive been here since 20 hp was just a dream and it's actually been amazing!! I'm building my own lathe in persuit of building my own stupid ideas..

Love your vids! Can’t wait for you to get the new pistons 🙂

You're really embrasing the digital world - 3D printing, CAD modeling, CNC machining. Just awesome how you're getting to grips with it all. Good stuff!

C’MON DUDE!! Orange 3DP filament? Really!? EVERYBODY knows red is faster. Waddaya thinkin’?!, otherwise, outstanding👍

This is going to be one heck of a little screaming banshee motor.

Alex, what if you mount the engine on a low friction torque arm which is free to rotate, except that your load cell is the restraining device. Then you might be able to keep all the reactive forces from your pump, along with your belt reduction losses isolated from your shaft torque. In this manner, you can measure shaft torque and RPM directly at the engine. This would give you an accurate horsepower value. If you ISO certify your load cell and rpm instruments, you could produce ISO certified dyno runs. Your first belt drive should ONLY be able to transmit torque forces from the primary (crankshaft) sheave.

@2STROKE STUFFING have you seen the drive system invented by “CeramicSpeed” for bicycles? It’s a chain-less drive system that’s supposed to be 99% efficient and fits a LOT more gears than you could traditionally via. drive sprockets....the machining / development could be difficult but, it would likely be more efficient than shiv-drive and would be able to maintain nearly constant RPM given the close gear spacing of 13-26 speeds. Keep up the good work; excited for the dyno!!!

More voltage to the servo or a higher torque brick servo 🙌 but also fix the springs 😁 can't wait to see the results

Sooo stoooked over the coming dyno build 😁

Man this is the setup I want and stuff I want to be doing in a few years, really cool R&D work

Good to see you're getting to grips with the mill. Now let's see that 50cc fly!...

Loving the R&D. Can’t wait to get back to hearing some DTNA pulls!

YAY! YourDyno build progress!

Great video. You should be using an exhaust valve servo. Like the one found on Ducati's. They're cheap on ebay as people remove them while fitting race pipe. Huge torque on them, and pretty fast. About a 1/3 of a second, and it has 2 cables pulley!

yess! I was impacient!!

I love the concept

Great video man 👌

keep at it.Looking forward to seeing you race it.

Thanks love watching your videos

Simply awesome man 👍🏻

Been watching from New Zealand long time fan bro keep it up 👌👍

Great designs and enjoy following your thought process and build. See you on the Salt!

You can get rid of the springs and run a "pull pull" setup with a cable to pull the valve open and one to pull it shut. A lot of RC airplanes and helicopters run pull pull (cables) or push pull (rods). You can eliminate slop and load on the servo at the same time.

yes, this will be a gamechanger!

I would try using a counteracting pull/pull cable setup like steering on a boat. Then you have more control. Also you have to consider that with the throttle closed or at partial throttle the vacuum will make it struggle even more. Having the pull/pull cable allows the servo to pull it shut when the weak springs may not.

Always interesting!

Great content!

Just think, two months ago you didn’t have a working mill. Now you’re designing and making actual parts that work. The primary throttle looks fantastic too.

Fredericksburg VA. sayz ROCK ON !!!

I watched 12sec, that was enough for me to hit like :D Loving the moves and good vibes.

awesome vid.

Man I'm ready to see this thing ripp !

2stroke, Have you thought about getting a venturi in the intake so as to get extra power? Love following your going forward with this project. Keep it up!

Your Cnc sounds AMAZING now liken to many high end ones

Love your videos. Can't wait until you get past 20 hp

Love the intro!!🤣🤣🔥 I’m sure you know this already but just Incase you forgot or didn’t know there are HT single servos “high torque” 1/4 scale servo would be really nice in this application plus adding small block spacers to take the sloppiness out of the springs. Cheers mate!!! And don’t forget to charge your batteries in your headphones 🎧 while cleaning the shop🤣🤣🤣🔥🔥🤦🏻‍♂️👍🏻 Great vid!!❤️🔥

i feel your pain.. it's 5am again how did that happen.. sure it was only midnight a little while ago, sat down to do some CAD then was making on the CNC machine for a bit.. Then was playing with my FGK retrofit EFI system which my friend designed and built love it. he does a 4stroke and 2stroke version. bit below what you are doing but really good off the shelf unit. It works! i'm turning my cb100 cc into a EFI bike, it's from 1976 same age as me. They made bikes here 40 years or over exempt from MOT, Tax and Low emissions! Loophole exploited asap. we have two dynos here... you are welcome to use anytime, only snag is we are in london!! UK.. bit far for you to travel but if you ever in town come say hi , love what you do ciao

Thanks

I literally had this video recommended after i saw the chatter video on broken taps

I'm telling you if you end up putting too much fuel at it you're going to need to add more spark or it won't ever light. You'll either need a second spark plug or an auxiliary glow plug to be able to get all that nitro to light off, especially without it being supercharged or anything. Oh and where you said more nitro.. actually it'd be less at Bonneville. The Salt Flats are at 1285m of elevation and depending on temperature I know the AD can go way higher than that.

Wooow you are a master

if u need better servo, u could try one from yamaha power valve system (YPVS) from like tzr and dt bikes

I watch your videos from years, maaaaann come onnnnnn i want to see this built completeeeeeee😍😍✌🏻💪🏻

CANT WAIT TIL I GET THE MOST POWERFUL 2STROKE ON A CHAINSAW 😉

Everything you have learned from the cnc can now be used for the injection control

I still wish you the best in pursuing your dream :) Its kinda mine too. - Remember to donate anything to this skillful man, so that he can continue!!

Nice it should work good!

Awesome stuff lovein it. You mentioned longer softer springs ,longer to close valve fully but in theory could slow closing as softer. Hard to pick not being first hand seeing it operate but if your little softer and 10mm longer just stretch the spring evenly that are in there you'll get same result. Plus have to watch video again but I'll comment brace cable both sides where it connects to slide solid fixture then to help return slide but you probably have, shorter cable less bend ,. You may have servo speed in tuning it ,also bigger servo 25kg minumin/steel gears bigger is better. All the best loven it

for a better response, find a decent premium servos, for airplane you can check rudder servos that has a very fast speed and response, or steering servos for 1:10 in road rc racing, mind the latency coming from the control system since it will introduce broader issues affecting whole system.

Qoute.. "Will take this trail shouldn't be much of a problem"- George Donner Okay that may be a bit much. However not much of a problem can turn into a big problem! lol Let's hope it doesn't in your case! Love your videos man! I truly hope it all works out for you!

Nice.

Slow closing might be bigger problem than slow throttling up.

ah, råkul sigarkutter!! 😍😍

Just waiting for thows pistons 😏😏 looking forward to hear the beast at full load

9:07 yeeesssssssss wicked

I have chatter issues but i'm using a boxford vmc260 its slow and manual tool change but it's doing what i need. :)

Nice . its like YPVS

Can you do a video about cilinder size, vs rpm vs carburator size? Just some basics to keep in mind. I am planning to build me a honda mb8 and mbx80 with all sorts of sister parts from other models. Thanks and really enjoy your video's. Keep up the good work, cheers 🥃

Consider using a 4 wire positional feedback servo for better throttle control.

Its funny how hes shop looks like a kitchen. Except his "microwave" costs more than my whole garage

Suggest to check that air pressure difference across the throttle plate does not push the throttle plate against the body so hard that the spring can't return it. Maybe some experience of these devices out there in the speedway community, the Blixt carburetor is a little similar.

Since you are obsessed by 2 strokes, I would love to hear your thoughts on the Ryger engine!

You should preload the springs so there's non-zero force holding it closed-- especially if you go with softer springs.

Nice bit of PWM control. I did something similar to shut the chicken shed door when a light dependant resistor sensed that the sun had set. I really want to make a dyno like that, will it only be good for particular rpms though? Or can it be dynamic?

Salut vers 4:45, Il te faudrait un trusquin ce serait plus adapté que ton pied à coulisse. Chouette univers qu’est le tien :) et super vidéo !

Hi iam just curiuos why did you choose to use belt and not chain? :)

😎

great video, Top Tip, easily clean yoyr workshop floor if metal shavings, just drag a large magnet in a piece of cloth around, once its clogged up, remove the magnet over a bin and the metal trash will fall off,??

Are you suggesting a motor able to be involved in a lsr could match the performance of a dyno motor

🤘😎

hi bro! what do you think of a 2 stroke 2 cylinder engine on a honda dio 34 (GBL) crankcase?

Awesome video try ypvs servo motor much more reliable

Hey dude, Whats the part number of the servo you're currently using? I can gaurentee there will be a cheap powerful servo available from hobbyking thatll do the job, and if not, futaba and hitec will definitely have one strong enough, might pay to scrap the cable and put a solid linkage too, also some needle rollers for the slide channels will help make the valve move smoother. Fuck i love watching this build, got me through 6 months of lockdown last year in melbourne. If you want any help searching for an appropriate servo let me know.

Can this been done with a larger engine maybe the 98 model screaming eagle? But seriously can this design be used to make a 500cc stroke version

Hey,.don’t you get a beter result in finetuning when you use a butterfly valve, the same as in a throttlebody. I am building one myself with a 40mm diameter, and it is easy to make. Also use a servo tester with a dial knob, so you can move the servo. Then you dont need a arduino and laptop for testing.

You are really going to want it to be able to open faster. Bigger servo motor and same setup. And longer springs like you said.

Have you considered a solenoid for the secondary intake shutter, something like a pinball flipper solenoid?

Not far away now ! What servo are you using ?

Use arduino pro mini or nano is more compact and still fine for what you are doing

I have been seeing many of your videos, but what still bugs me is how you will reach more than 800 bhp per litre engine, its a reality on the OS 12 XZ SPEED spec III. ?? Don`t get me wrong i love your videos, and your calm way of explaining your ideas, and you are on-to many "right" roads i think.

Awesome machining! But why ride by wire, what's the advantage over cable-actuated throttle? Cause the ride-by wire is heavier and doesn't seem to open extremely quick.

I’d be cautious of the throttle sticking in the partial open position. It would be safer if you had a push-pull setup. There’s a reason bigger bikes use it.

I would suggest investing in a servo of a bit higher quality. It will have much more torque. Maybe you have a local hobby shop which can help you out.

i think is better a butterfly valve , its more responsive and faster. and you can build with same components. go!!!

close to 1k like and still 0 dislikes. 👏

I'm an Rc man what I do. Do not trust a servo with your life. Cars have crazy safety computer stuff to prevent throttle sticking. Bad idea use a dam cable.

It would be great to get rid of the pantomime

👍👍👌🏍

Instead of using a cable, why don't you use a cam and mount the servo directly on the throttle body? No more springs

Are you going to calculate loss through your gear reduction and jack shaft on the dyno?

Most Powerful Two Stroke Floor Sweapper Ever

Actually, this is the most powerful 2 stroke ever...Wärtsilä-Sulzer RTA96-C

I've always been warned about whacking open the throttle on a 2-stroke. Supposed to make it go lean. Bad things can happen. Good luck. Be well.