Patent ID: 7305956

Claim:
A model airplane engine starting device comprising: a cylindrical hub having an open end and an opposing closed end hub base, the hub having an axis of revolution, the hub comprising: a tubular sidewall having two slots, the slots diametrically opposed across the axis of revolution, the sidewall secured to a periphery edge of the hub base; a starter unit adapter flange, the flange comprising: a top end secured to the bottom portion of the hub base; a driven end distally spaced from the flange top end; and a flange body attached to and spanning between the driven end and the top end, the flange body having two or more opposing driven faces, the driven faces sized and adapted to receive a rotary torque drive from a drive means; a substantially flat elongated bumper bracket having two opposing ends, a top face, a bottom face and a center portion about an axis of symmetry, the bracket received into the two slots in the tubular sidewall, the bracket bottom, face secured to the top portion of the hub base substantially such that the axis of symmetry of the bracket aligns with the axis of revolution of the hub; a pliable circular ring shaped center prop hub donut, the donut secured within the tubular sidewall to the top face of the bumper bracket, the donut aligned such that a center of the ring substantially aligns with the axis of revolution of the hub, the hub donut adapted to cushion contact between the hub and a propeller; and two elongated propeller side bumpers having two opposing ends, the bumpers secured near opposing ends of the top face of the bumper bracket, one at each opposing end of the bracket; the bumpers extending outwards from the bumper bracket away from the hub base, the bumpers to engage against the trailing edge of a model airplane propeller to transfer rotate torque to spin the propeller for engine starting.