Hello, I am currently working on making a hybrid power system using IC engine and generator/ alternator/ motor for a UAV (VTOL capability - quadcopter and fixed wing combo) we are designing for MEng project. I have found some information on alternator by Sullivan and other company/forums. I have also looked into using motors to generate elec but not sure as how I would be able to generate sufficient power. Current chosen motor spec - 42amp draw continuous and rated at 850watts each. takes 4-5s lipo. Any suggestions??