I Turn Pocket Bike Into Big Bike Engine

Seeing that this is a 2 stroke, i think an expansionchamber for each cylinder would greatly improve performance and rpm limit on this pocket rocket. Awesome build 👏

Being precise enough in your work to weld together two crankcases and two crankshafts, and get away without needing boring of the crankcase for alignment is mighty impressive. Nice one!

Allen Millyard would be proud. He's the only other person I've seen saw a crankcase in half and not turn it into scrap!

Cutting and welding two crankcases and two crankshafts together is impressive in itself let alone with a little help with a lathe and press not having to bore the case, using a rod the same diameter as the crankshaft to perfectly align the crankcase’s while welding was genius

Absolutely the finest art of knowledge, to build (or rebuild) an engine. When you look at a video like this, it looks decivingly simpel to to do something like this. But dont be mislead, only a few hundreds of a millimeter wrong messurement, or a few degrees wrong on ignition and the engine would be useless. You, Sir, are a true professional.

Excellent Engineering..with some more fine tuning that little mini should turn out lethal to ride👌👍

Very nice build. Reminds me of a Yamaha YSR50 that I put together with a 200 cc CS5 engine. Cleaned up the ports and made some expansion chambers. When I was jetting the carbs and getting the gearing right it would carry my 240 pounds at 85 mph. It was stolen before I finished it.

Your skills are unmatched by 99% of small engine builders. You did in one video what would take me a year to accomplish. But you crossthreaded the shit out of that first intake bolt 😂

I didn't expect the bike to sound this good!

Very cool project, interesting build. I have a 2004 MotorHispania RX50, thing is considered a 9/10 scale crotch rocket. It has a 50cc liquid cooled engine that turns 15krpm and supposedly makes 7hp. It has 6 gears and a clutch. It won't do a wheelie easily but it does take me (250lbs) up to a max speed of 71mph, downhill, with the wind at my back. Regular riding I never usually go over 55mph

Dude. That was sick. You’re a beast and you made it look easy in the video but only a few people will fully appreciate how much work that actually was. That’s sick. A lil tuning the carbs and I bet that thing is a beast

Great work as ever,definately needs a decent expansion chamber exhaust you can hear it choking as the revs build up.asides from that it looks a hoot to blast about on.

In addition to the shock that the creative work brings to me, one detail that touches me is that he darkened the strong light during welding to make it less dazzling. This is actually very important. In some other people's videos, These bright lights make the audience very uncomfortable and quite dazzling

WOW !🎉 Absolutely astonishing! Hat's off to a genius.🌞

Love the videos! 🔥🔥🔥🔥 Would love to see a 4 cylinder 4-stroke engine to 2 stroke! Maintaining the oil on the pan and turbo 👌👌

Casually welding aluminium without any breathing gear or covering up your skin is a great way to shorten your life, lung cancer and skin cancer is a real killer. I used to tack stuff all the time without putting gloves on to save time, or i wouldnt connect my air line to my mask because the job i was doing would only take 30 seconds. But then i see the older guys who are in their 50s and 60s dieing from lung cancer and skin cancer, people who i know personally, so now i make sure i do it every time, no matter how small the job is. Even if it's not aluminium, cast iron or regular steel is still bad, especially if the metal has had oil on it at some point, the smoke will cause cancer. I also notice you handle a lot of solvents without using gloves which is another sure fire way to get all manner of different cancers and central nervous system damage, especially some of those older part cleaners that im almost certain aren't yet banned in the country you are in. Tetrachloroethylene is one of the worst chemicals you can put your hands into, and what's worse is that your body cannot get rid of it once it's inside of you. You really should consider wearing some protection, gloves are not expensive and if you can't get nice mask with an airline and air filter pack at the very least weld outside with a fan set just above your arc. And for the love of god check your solvents especially for Tetrachloroethylene, there are lots of alternatives out there which aren't quite as dangerous. Or you could just wear gloves!! I love your videos but someone has to tell you this, stay safe.

Please make a V-Twin for bicycle! You'd make the motorized bicycle community so happy!

That was badass. These are impressive little engines. 4.75hp and it fits in the palm of your hand. I think your engine deserves a gearbox of some sort and a top speed run. Im also curious how well the pull start survives, pulling over 2 cylinders

Class. It's just the fine tuning and final tiny adjustments and you'll have amazing engines.

This guy is a genius! I love it