I’m so happy you are finally seeing promising results, 30hp is already incredibly high and I’m so looking forward to see what the future brings for the brute force engine! Good job Alex, you’re a genius!

I notice that the engine speed dies away very quickly as the braking force increases. Is it possible to change the rate of braking increase? This might allow the engine to sit at the peak for longer, giving more reliable readings, and also give the engine time to recover at lower revs without stalling.

On the salt its going to need to maintain that HP for at least 5 miles , the gearbox idea is going to make a big difference , looks like you are making huge progress .

wow. I started watching this series not *really* knowing what was going to happen (or much about 2 strokes really). Those are some nutty numbers from such a small engine. Cant wait to see what the final result will be, keep up the awesome work!

You can have my Lectron nitrous carb if you re-imburse my shipping once I send a confirmation #. The fuel rod in it is for a 693 but the carb has never been installed

Your videos are amazing. I've always had an affinity for 2strokes and for cameras/video, you magically seem to merge those two loves together :) Thanks, loving your style!!

I love getting to be a part of this journey. Absolutely fascinating work! Love your videos, keep it up!

Alex, you're reaching the point where you might want to investigate some datalogging options. Seeing peak crankcase pressures would be really interesting and I think would help you dial in your rotary valve timing. And with that, I think a precise and repeatable adjustment mechanism for the rotary valve also seems like a no-brainer at this point now. Keep it up!

Very cool stuff. I have a ktm 150xc and the sounds of a small 2 stroke screaming away warms my heart. Thanks for making this video series.

Your content just keeps getting better and better. Very excited to watch you continue to grow! Seeing how you incorporate a standalone transmission to this engine will be a lot of fun to watch.

This is the only channel i need to see every new video. Also nice to see you make every time better videos and having fun by doing this. Impressive what you are doing.

All right! You are back at your best! Nice to see the engine spark to life with promising results! Keep it up man!

Awesome! I am very excited to see more of this coming.😃😃

Engineer here that works on combustion Engines: Maybe the engine dies under slight load at low rpm because your ignition is too advanced. A flat timing curve is not a good idea, try to at least ramp it up over rpm by using some standard flame speeds in combustion engines to determine the slope of the curve. This wont be perfect at all, but it will be way better than a flat line over a range of nearly 8k rpm.

I've been watching your videos for years. Your advancement lately has been impressive.

Wow you are learning a lot and making more power. This is what testing is all about. To learn what works and what doesn't. Great video!!

Congrats!! Looks very promesing. In engine category you and dahm are my absolute favorites. Keep up the awesome work.

A 500 has 53 hp ad a 450 has 42 hp that is crazy 30 hp out of the 50 is epic

Love the way the channel has headed since full time commitment! The humour, varied build content and the "just enough camera Geek" input makes things entertaining and informative. For me it's especially interesting since I have been riding and fixing 2 strokes since before ..... Well let's say a long time! Lol . Gutted when over here in UK sales banned but new tech may see a return to that manic powerband grin the first time you threw a leg over a 350 LC Yamaha ! That's when things really took off after a decade of capable air cooled strokers 👍

Really interesting how you grasp moving forward, thanks for sharing

600 hp per liter. Not bad for a chitty chitty bang bang work shed special! You are a hero to us work shed inventors everywhere! I have a ring seal discovery for a 50 mm bore I’d like to contribute. Testing completed.

i have said it on instagram to, but the PK50/Vespa Smallframe gearbox is a dogbox meant to hold NM's and it is really simple and a ton of aftermarket stuff It is also oparated with 2 cables witch give's you alot of freedom with engine placement

Grateful to be on this journey situation with you.

Outstanding! Thank you as always -CY Castor

I just love seeing every new video on this engine keep up the work man

I love your vids man. So much to learn from them. Keep up the good work!!!

I love your videos Look forward to seeing them. You are very smart and funny. The camera shots and editing are great. Keep up the great work. Blessed Be

Love your channel! You can think of running shorter intake duration which will reduce the risk of backfire, since you are able to run higher boost pressure, therefore you can hold the cylinder charge amount constant! When intake durations are low enough and charge pressure will be high enough, the engine should perform well without the intake reeds! Try it - break it -repeat it!

NICE, now we are getting somewhere very fun and exciting, thanks!

Outstanding, absolutely love your vids and your passion for this

What a cool channel. I do a lot of experimenting on my Honda FL350 engines as well so this channel is really interesting to me. Looks like my 25 hp prediction has been destroyed just like those reeds. The only thing I don't like about metal reeds is that they will destroy the engine when one breaks off. Great work Alex.

The reed problem can be overcome by stacking reeds. Carbon with a titanium reed that’s undersized and installed directly on the carbon. Vintage two stroke have problems with “flutter”, causing the reeds to not slam closed completely. It has much to do with turbulence, and the fact that people didn’t understand what was happening at 100K frames per second. This is why we have “ Reed blocks “, it backs the tips of the reeds out of the turbulence, allowing them to seat slightly better, but not perfect. This is why we started using a layer of titanium/steel. Order some reeds from a Quadzilla and cut them to size. They are as robust as you’ll be needing. But layering allows the reeds to operate properly at low speeds even though they still work at mind-bending rpm. Though it does give you more crap to find when you detonate.

Keep getting better and better. Very promising both production and engineering. Love it.

very exciting mate! cant wait for the next episode

That’s awesome man! Keep up the progress!

This is amazing!! Congratulations, hard work pays off!

Pretty sure you are spot on about the reed petal breaking at full load and very high rpm. I have heard that sound before when i compressor charged my enduro 50(80). The pitch of the sound is very distinctive indeed. Like a high tone ping. Lovely camera work this time around. Can really see the progress in your productions, Soft and pleasant audio is a must for me and is MUCH loved. This monster of a motor will surely be bonus to have in a landspeed record bike. Hats off to you good sir. P.S. When you swear in you native language it is beautiful

This is awsome....30 hp amazing, good job 2SS!! Thank you!!

Best show on KZfaq.....excellent job.... loving it...👍👍👍👍👍👍

this is the most epic part of your journey. congratz man

Very entertaining my friend thank you this is getting good

This is the best custom build series iv seen in a long time. Great video skill too. I would like to add a comment about balancing, I believe as run time increases fatigue will set in due to the harmonics created from unbalanced rotating elements. JMHO

can’t wait when you got timing sorted out and proceed to raise the boost! absolutely loving the content

Good stuff!! Keep up the good work.

Absolutely outstanding runs! Are you planning on running larger cages with carbon fiber or metal reeds now? Or will you be moving to stronger steel cages with the same reed size?

Great video great results

Love your work. Love hearing that little ripper sing!

had to cancel sleeping and i do not regret it, by far and away my favorite channel. watching you innovate is truly the highest form of entertainment. LYSM

This is getting seriously impressive now. Can't wait to see what the next episode brings.

love your content. The journey is all we cheerish, never the accomplishment

For mounting pulleys to the shafts look at Trantorque bushings. Or, if there is not room, copy the taperlock idea at a smaller scale. We mounted our Robotwars sprockets with Trantorque and they gave no trouble at all, whereas nearly all other competitors had problems. They hold very tightly and allow for angular adjustment.

Thanks for the video. Well done. And no holed pistons !

This motor is getting crazy and I love it... Keep up the great content

Great progress! However, as much as I'd love to believe you're getting potentially 30 horsepower from 50cc capacity (boosted or not) it's a big pill to swallow. You need to take an engine with known output and test it on your dyno to make sure your dyno is accurate. It would be a shame to find out your 30 horsepower is only 15 or something.

I’m just amazed to see how much power you’re managing to pull out of that little 50 mL can’t wait till the next one

your on the right track, keep up the work

at this point my knowledge of what is happening has ran out im just here for the prretty videos at this point hahah, 30hp is naughty from a 50cc. so excited for ya been a long time in the making

Very good progression in the series! love to wach it every time. Maybe it is nice to show the power graph from the dyno. i am curious to the power band. I hope you find a good solution for the reeds, so you don't have to change big things like a rotary intake. Keep up the good work!

Så jäkla rolig kanal, håller själv inte på med något 50cc alls men ändå roligt att se hur det går med dina tokiga byggen 👍😀

To secure the trigger wheel you could drill a hole half and half into the wheel and shaft then drive a roll pin in, I've done this on v8's when fitting a supercharger driven by belt of the harmonic balancer

Love your work Alex, never stop. Can't wait for the next update! Ps. You should make more items in your merch store with the saying "Easy is not worth anything!" I would get a mug/stickers with that saying!

You're making history in the 2 stroke universe !!! I can't wait to have an engine like this in my motorized bike !!!

Hi Alex! About reed issue I would like to suggest you some soutions. In order to reduce deformation of the bridges and petals due to the increasing blowdown back pressure, you could use three petals and two bridges on each side of the cage. Narrower petals have less area, so the applied force to the bridge will be reduced. To avoid bending fatige you should change bridges to vertical walls or splitters, linking both sides of the “V” cage. Due to the pressure and temperature conditions, the suitable material for reed is steel, the same used for reed valves in pulsejet engines.

Damnnn I want one. 😩 your videos are amazing. You're my favorite creator on KZfaq. You definitely got this!

keep up your efforts you are being rewarded for them

For the gear cases you can order any size you want online with or with out seals or if you make you own cases you cab put your own external seals

YES!! What a way to start my day!

I'm am very enjoying that you using the AM6 engine. RS50 was the first bike I owned and I spent a lot of time in the engine so would be very nostagic for me. Love what you're doing

I’ve been waiting patiently for years for this video.

This is starting to be really fun!!! 30hp is like a small old car that are really heavy and big motor. 50cc and 30hp is awsome!!! Keep up the good work!

That’s epic! Crazy power, I would love that motor (when it stops breaking)👍

Promising ! That's the only word that comes to my mind, watching your vid.

I was always wondering if the reeds would hold the boost. I originally thought back then "why didn't he do a rotary intake design as well?". But you showed that it worked. I'm sure your design is pushing the extremes for a reed valve, even if you had a tougher one. I beleive steel reeds may deform on you from the heat. Can't wait to see more! This is a win in my books. Something has been learned! Good luck dude!

Nice Work. Keep going

what a journey 😃 cant wait to see what you will do in the future 👍

Awesome result mate! Sounds tough as. Just a thought, given the huge amount of pressure the reed valves are seeing at high timing, it may be a good idea to slightly increase the area of the exhaust hole in the rotary valve (increase the duration of the exhaust port opening time) to allow the engine to breathe a bit better. This should decrease the peak pressure that the reed valves are seeing and may help with longevity in addition to the other reed valve mods you are going to do.

Two stroke legend here

Love it keep it going!!

Any progress is progress even if it’s negative.. great work!👍🏼

Now its starting to look promising. Check out Vforce reed cages, we used them on the 250cc twin. They have lot of reed area to distribute the load. You could make similar cages from aluminum. Will withstand a sneeze and cough a bit better.

The editing of these videos really is top notch, nice work! Married with two-stroke nerdiness is great 👌🏻 Shame youtube sees fit to put two full length ads in this video though, unless that’s deliberate?

Genuinely absurd, you better bet I'll be at Bonneville the next time you swing through to see that engine in action

OMG, this is more exciting than anything on TV!

Awesome! I love your content!

Derbi 50cc gearbox is great. With metrakit gears, I used this in 50cc race for years!

These are the sweetest numbers that I have seen on you tube !

That's absolute madness!! You absolute legendary badass madman!! Hell yeah, that's certainly the most badass 50cc I have ever seen.

My son raced MX for 10+ years. Had excellent results with Carbon Tech reeds. No failures.

WOW! Usually people swap steel reeds for fiber... guess you are going the opposite direction. If that's true 30hp then you are really killing it. Keep up the good work!

You could design rotary valves to replace the reed valves, it would certain complicate things a lot … thinking of complicating things, you could make the rotary valves with variable timing 👍

Well done. It's promiseing great to see

Mate just wanna say congratulations on what you have achieved.

Great work! I 'm excited to see progress in this new engine design. Have you considered a "V Force" reed block design? The extra reed surface area may be important for reed life

Great progress. That must be a nice motivation boost to see 30HP!

killing it keep it up !

you can get a polini reed sheet where you cut out the reed, i did this on my ported aprillia rs50, if you cut it as one big square it gets a vetter seal. im not sure if the engine got more horsepower because of stronger reeds or fresh reeds but it works. i hav some spare if you know the thickness.

damn we're here making 30hp on a 50cc. I gotta give it to you I thought it would never happen but look at you now blowing reed valves from the pressure good job!

Ahhh love you man!! That's the model i owned when i was 16!!!!!

This is a crazy engine. I like it. Thank you for the interesting video.

Helt sykt å følge med på! Du er en legede blant oss garasje aper! 30hk i 50 kubikk er helt sykehus 🤘