>>996017
pilotfag here resurrecting your dead thread
whats the output shaft RPM on that motor? it's fairly important, and paramotors should be(iirc) around 2700rpm, perhaps a hundred or two more, running at 60% power. If you wanted to actually do this, i'd recommend buying a prop. You essentially need an aeronautical engineering degree to design an effecient propeller. And when you only have 50cc of engine, you want all the power you can get.
Yes, you will need to mod the carburator. You tilt around a lot more in a paramotor, but you cannot invert yourself so you dont need to worry about that part. Just consider that you want fuel flowing to the engine even if you are around 70 degrees off of *felt* gravity(if you don't know what i mean, take an introductory course on piloting and ask what g-forces are.) i don't know what that engine looks like, but since it was in a scooter and those tend to tilt some, it shouldn't take a whole lot of consideration. It will probably end up being more difficult to make the propeller mount.
Other than some fuel line mods, and perhaps a specially-shaped fuel tank (although i suppose you could use a few 1 or 2 gallon standard red plastic tanks...), and of course the protective net, it looks like a fairly easy and interesting project tbh.
I've been wanting to build an airplane from plans recently. I'm not sure whether i should start by building the fuselage or rebuilding a Corvair engine. They are six-cylinder air-cooled like most modern piston aircraft engines, except Chevy made 5 times as many Corvair cars in the 60s as Continental Aircraft motors has airplane engines through the last century. The other major difference is that most, but not all, 3-litre aero engines are 4-cylinder, not 6. 6 cylinder air cooled engines can run without a cylinder. In fact i've heard boomer stories of people blowing off a whole cylinder head and the engine still running on some lycomings. It's also a flight proven motor, some 500 airplanes have corvair engines.
There's a few places that offer rebuild services, but theres a boomer in north florida who offers a weekend course on how to rebuild the engine yourself and how to troubleshoot problems for around 200$. Supposedly, buying and rebuilding an engine with this dude telling my what im doing wrong costs in total around 15,000. compared to a roughly equivalent 3-litre lycoming going for about the same price freshly rebuilt, or ~22,000 new, it seems like a better idea to me to know how my engine works and how to fix it. Same reason i moved to linux actually, i wanted to know how my computer worked.