Originally Posted by bandito
A 20 year old man in his prime only can muster 1/3 hp, the motor has how many hp?
Not exactly. HP is commonly measured as peak and sustained levels, also HP is not the same as torque. Average club road cyclists can hold at 300 watts (.4 HP) for 30 minutes sustained and sprint peaks of 1500 watts (2.1 HP) at over 100 ft. lbs. of torque in sprints. At upper athletic levels, Tour de France racer Mario Cipollini has a max sprint power of 1900 watts (2.5 HP) and world-class cycle sprinter Marty Nothstein produces upwards of 160 ft. lbs. of torque in track sprints.
For comparison, A Honda GXH 50 produces 2.1 HP and net torque of 2.0 ft. lbs.