Patent ID: 8096497

Claim:
A power assembly, suitable for installing on a bracket of a coaxial twin propeller model helicopter, used for driving a twin propeller rotation assembly and a tail rotation assembly of said coaxial twin propeller model helicopter at the same time, said twin propeller rotation assembly composed of a main rotation assembly and a minor rotation assembly, said power assembly comprising: a motor assembly, said motor assembly comprising a motor, a motor gear, and a fuel tank, said motor and fuel tank fixed on said bracket, said motor connected to said motor gear, said fuel tank provided fuel to said motor by a pipe, said motor driving said motor gear, and a gear assembly, said gear assembly comprising a main gear, a synchronous belt gear and a belt pulley, said main gear engaged said motor gear, said main gear connected to said main rotation assembly of said twin propeller rotation assembly, a lower part of said main gear connected to said synchronous belt gear, said synchronous belt gear connected to said minor rotation assembly of said twin propeller rotation assembly, an upper end of said belt pulley connected to said tail rotation assembly, a middle part of said belt pulley engaged said main gear, a lower end of said belt pulley connected to said synchronous belt gear.