I want to build a helicopter from scratch and need to know if there are any books out there that deal with the physics of the heli. Can you help? I want it to be around 50cc and don't know how big the rotor is going to have to be. The only reason for 50cc is because I have one and I think and 80cc will be to big for the first experiment.

Thanks
Mike

try to find Dieter Schluters helicopter book, it was published in the early 80's

Alan...