Can you build your own helicopter?

Yes of course you can! Otherwise there wouldn’t be Helis if someone hadn’t tried that!! But back to your question, how do you think that a race mower engine is just because it drives a rotating scense is also able to drive a Heli rotor?? Have you ever dealt with the topic of up and downlift? So how a rotor blade must be created so that it generates it?????? Trying to build an aircraft first, it is only necessary to calculate the angle of attack of the wings, their curvature and the whole, of course, in conjunction with the total weight. If you’ve done this, you’re going to build the Helis. Just remember that the “Tragfelder=Rotor” turn and also damned fast!!! Now the problem is that this rotating rotor generates a most counteracting reaction to the “hull”! A force has to counteract this, i.e. the helis still have such a small rotor at the rear and yes it is because the torso does not turn away. That’s how it’s going to be quick and let me hear it when you get it. Greetings