PiP Engined Aprilia RS50 on Dyno - I get the Most Eureka moment ever! 

Seriously, it's so obvious now, wohoo!(imagine the down if my fix makes no difference...) Anyways, thanks for watching! Btw, this was filmed with anamorphic lenses in 12bit raw, transcoded to and edited in prores 444, rendered to prores 422, and then completely destroyed by youtube's compression. Just had to get that off my chest😁

Oh man, I've almost gotten used to these videos leaving us on a clliffhanger but this one really makes me hungry for more.

this quest of yours to build the fastest 50cc motorcycle has more ups, downs, twists and turns than any rollercoaster i've ever been on. good on you for never giving up!

The audio does a fantastic job of picking up the difference between the 115 and 120 jet change top end difference. Now you can really hear it "open it's eyes" a bit.

You are one of, if not the most, ingenious men I've ever had the pleasure of watching. Your work is mesmerizing and quite honestly I've never seen anything quite like it in my 40+ years of small engine mechanics. What you are able to do with only a screw driver, pliers, and a piece of aluminum is beyond amazing. Your videos are captivating with each one comes a sense of wonderment and by the end I'm left dumbfounded and anxious for the next one. You are without a shadow of doubt a wizard of blue smoke and master of 2 stroke! thanks

2SS Video day is always my favorite day of the week. I've made more progress on my projects since I started watching your videos than in the several years before. Thanks for the motivation man. Easy really isn't worth anything.

At the age of 17 I owned a 50ccm Suzuki ER. I put on a 76ccm 11hp Malossi cylinder with 20 mm Delorto carburator. The exhaust was either Malossi or Gianelli. This rig did well but me and my friends always wanted more so we customized and experimented a lot. We created larger exhaust ports, made new fueling ports including new transfer windows in the piston. All this gave more power. I decided to take one of my engines and create a high rpm monster by reducing the crankshaft weights and install high rpm crank ball bearings. This was something I could do at school where I had access to a lathe. With this modification I got more rpms but less torque. I am a big an heavy guy so the change did not do to much for me. I later sold the bike to a much smaller guy and with him the bike became the monster I wanted to create. He got crazy speeds with it. This was now 30 years ago. I time I will always remember. I loved every moment of it. It's so cool to follow you channel and I love that you share your journey with us. Keep up the great work Alex. We all root for you.

It was great to hear this thing run through the gears even if its not 100% yet. Excited to see what happens next!

Even running badly, it still sounds fantastic. I can't wait to hear this beast going hard!

Just look at that RS50 frame - no manufacturer is putting effort into under 125cc machines anymore… the Chinese are nailing style but even the Japanese are recycling boring designs from decades ago with the main focus on 4t clean burn tech. The Aprilia RS range is just mind blowing and other manufacturers around that time were doing crazy things It’s truly sad that the focus is on EV these days and 0% focus on race reps

I love how this gets posted 20 minutes before Im getting ready to take my shitbox puch out for a long ride after finally getting it back together and running smoothly. Gives me a good feeling still bringing extra plugs and a tool kit

Man, I love that you shot this video in 21:9. It's honestly refreshing to see a youtube video that actually fills the entire screen of my ultrawide monitor. This also looks good on a normal 16:9 monitor since it gives that cinematic effect with the black bars top and bottom when full screen. I'm just happy that for once, I actually get to use all of my monitor in a youtube video in full screen lol

Great to hear it singing through a gearbox after all this time!!

Yeah can’t say enough how satisfying it was to watch and listen to you make noticeable progress with tuning in just one video. That had to have felt good 🎉 my favourite channel on RU-vid ❤

Really good episode, this one! Excellent editing. The music really fits the atmosphere, and you can feel the good vibes. So stoked about your revelation and your fix, hope it works!

Proud of you. Been following your progress since you started posting vids. Fantastic work.

Remember the episode "Should you go this fast on a bicycle?", yeah you should. At least more often. Im craving a road test every now and then. *Dreaming myself back to the young days*

Thanks Alex, that was truely fantastic. You have a massive smile on your face now!

Every Friday I'm here with my coffee and smoke, makes my Friday morning. :) Keep up the good work, love the videos. :)

Happy birthday bro! It's a crazy journey you've taken us on so far, and I can't wait to see the on-road testing. Impeccable craftsmanship in both mechanical and video editing as always. Stay safe my friend 🤙🏻

It's so awesome to finally hear you banging gears. Love it. Happy Birthday 🎉

Happy birthday!! We can wait to see the outcome!

I do appreciate the ridiculous amount of time you spend editing the cuts to match the beat of the music.

Happy birthday dude! All the best wishes from germany!

I hope so!!! Best of luck and happy birthday!

Happy Birthday for Tuesday! This is a BIG step you made here, congratulations! It's coming together; it's inevitable. 🤩

Never give up. We are with you every step of the way, through victories and blunders.

What a roller coaster of a journey this is

Been watching your videos for a few years now, as a two stroke enthusiast myself (mainly small bore Motocross) and engineer also you never fail to amaze with your knowledge, aptitude and willingness to tackle any task. Keep up the great work you're doing 👊👊👊

Im watching this in the future... you find the answer to all the strangeness in the end. You nearly got it here. Great perseverance my friend.

Aprillia rs50 the most wonderfull moped ever ive driven one for years when i was younger tuning it fixing it it has teached me so many things about 2stroke engines that i began to fix them to earn money hehe

Ah man love the content!! Also I wish you a lovely birthday man🎉

The pain after so many months I can't imagine how it must feel to be so close now. Keep up the amazing work we are all look forward to the next installment 👍👏🤞

Have a great birthday. And we will wait as long as it takes. You are the man of cliffhangers.

Im hyped , keep it up moments like these are the reason why people continue with engineering.

Your vids are always a treat on Fridays

bro its soo nice seeing u stick with it and working out the kinks!

"Reodor Felgen" is a much loved character based upon a mechanical genius character in the Norwegian Award Winning animated film: The Pinchcliffe Grand Prix (Flåklypa Grand Prix). Alex here, must certainly have gotten a lot of compliments & comments for his uncanny resemblance to this beloved character. Movie comes highly recommended for ALL ages...

Happy Early Birthday!!!! you have me on the edge of my seat waiting for the next video!

Happy birthday in advance! Can't wait to watch the next video!

HAPPY BIRTHDAY MAY 2 ! I’m on the 3rd knew there was a reason I liked you !

Untrench the crankcase. Smaller diameter transfer ports. It will give more pressure on the downstroke charge. Too much takes away from a complete cylinder charge. My thoughts. Your doing good Alex and thanks for sharing. Your going to be a big star at the salt flats. Cheers from Morrison Colorado.

Looking forward to the next video, hopefully this is really the answer and it finally gets its wheels rolling on the road.... Can't wait to see how fast this thing is, it looks so good in that frame too. Happy Birthday and see you next time.... 🎊🎂🎉 😁👍

Happy Birthday, you are such an inspiration too all of us! 🎉

Happy Birthday from a fan in Canada!

This is the only RU-vid channel i get excited when i see i new video Keep up the hard work❤

Wow, now we are talking! I can't wait for the next video to see how it will run! Also, have a nice weekend and a happy bithday Alex!

Happy Birthday!!! Enjoy the holiday, we are in all in suspense to see this monster live.

Your photography director is a genius ;) Im in love with that frames, colour and compositions.

This is both a huge jump forward visually for us viewers but also for all the problems it has solved and opportunities it has created! The packaging on the Aprilia looks so good for this engine. No more fuel aeration or dyno drive issues. We get to see it on the road performing!

The engine setup just sits there perfectly. Edit: Advance Happy Birthday to you man!!🍺☕

Excellent, dunno about others, but theres something in the way you do your presentations "narration" that has an addictive feel to it, your positive attitude through the highs and lows,seems to carry that forward ,and will no doubt carry you on to success.... Cheers

Holy crap the way it sounds through the gears ❤️❤️❤️

Congratulations dude! You've earned it

Happy birthday dude, have a killer weekend. ✌🇦🇺

Congrate mate 🎉 very happy to watch your progres 👌

Happy birthday man.

Happy Birthday for Tuesday. Thanks for a great channel..

Nice!!! Happy Birthday!!!

Happy birthday mate. :)

It may seem to you that I am far from the truth, but there are several problems in the engine: 1) The top dead center of the piston is very high 2) The resonator does not cope with the gases supplied from the engine 3) Chain tension needs to be better balanced 4) The speed is not bad, but the torque is rather weak, possibly due to insufficient compression, the culprit of which may be both the rings and the quality of the deposition in the cylinder or the lack of weight of the cylinder

Have a happy birthday and your eureka moment is correct.

I so want your eureka moment to be my eureka moment with this build. It's messing with my melon man. Then, once you've smashed this project out of the park, we need a moto 3 engine that wins grand prix 🤞🏻

You are now better stocked than my last profficcinal machineshop job .

Happy birthday fella. Great wideo

finaly! and happy birthday Alex - from just across the border😎🎂

2 stroke stuffing...less filling...less transfer losses

Happy birthday buddy and all the best for it. Cant wait for the news because you have me wondering what it could be... Anyway enjoy your long weekend.

Oh! the suspense is defening. Have a great birthday.

Again, excellent musical accompaniment!

Sounds awesome on the dyno! ❤

Happy Birthday!

The best thing about fridays is 2SS videos ❤

Come on everybody, Happy Birthday Alex Charity-Drive! 🎂 Donate $1, $10, $100,000,000 whatever you have! For the birthday of the boy! Even if it's just 1000 people donating $1 each that's still a heck of a lot! Let's give him a big birthday surprise!

As a Kiwi it's a very proud moment to hear you reference the Britten. I was lucky enough to sit on one back in 95. Love your style Alex keep doing it.

Well done and happy birthday :)

Happy Birthday 🎂

These videos are always interesting, often exciting, but now that suspense is just straight up killing me!

The epic music was very well placed. Like a detective having an epiphany as to who the person was and how they got away with it……

When doing this loud kind of loud bike stuff I made an enormous silencer out of a 55 gallon drum with baffles,old rugs etc. The neighbors never knew I was tuneing the worst sound known to mankind. I love your videos.

Happy upcoming birthday Alex enjoy the day and swich off for a bit.

Happy Birthday for Tuesday, from Australia.

With the background music at the end and the birthday in the middle, this hyped me up a lot. 😅

I love how the german simson tuning community is supporting you

HAPPY BIRTHDAY!!!

Looking forward to the next episode! :)

Happy Birthday.

Happy birthday!

Have a great birthday and come back refreshed !

Happy birthday!!

Awesome bro so great to see you can get some testing done run after run without questioning everything

Ok, the next 3 or 4 days are going to drag on forever. I can't wait to hear your explanation. Thanks for the suspense!

In this until the end, Alex. Keep going. 👏👏

Great progress!

So close to an actual road test really exciting

I'm just enjoying the ride as he slowly descends into madness.

I would print that thumbnail and hang it on my wall! This cinematography is a work of art. Regardless of the 2-strokes

Happy Birthday🎉

The sound of the water being poured into the cooling system was strangely delightful! Does this mean I'm weird?

happy birthday Alex