ORIGINAL: Missileman
ORIGINAL: Alex570
Boy people here are quick to be negative. I think it will be a pretty cool plane if it works, which it should.
You may think that but there is a reason. I do genuinly care what happens to this guys airplane and to him. You call it negativity, fine with me. I call it being safe. And strapping a 21CC gas engine on the front of a 40 size ARF trainer is not safe. I can picture him kneeling in front of that airplane starting that engine and when the engine gets running the possibility of it breaking loose and chewing his face off. Melodramatic? maybe, and I sure hope I am wrong.
21 CC equals 1.28 Cid on an airplane built for a .4 Cid engine. An ARF I might add.
I don't know what power figures you are using but that gas engine will at the very least more than double the power of any 40 size engine.
That airframe is just not built to handle the torque that engine is capable of delivering.
PS: I have had firewalls come loose on ARFs using the recommended engines.
I agree. Not negative, simply safety minded.
somegeek