BrandonB
10 W
I got to thinking about how to achieve higher speeds with an electric bicycle, you have to use a bigger motor, and in turn bigger batteries, to have a reasonable range. After thinking about it for a while, I came up with a solution that may work if the bicycle is mostly used on flat ground. What If you ran two motors inline with a 7 speed planetary rear hub, one motor with an internal gear reduction, and one motor ungeared, both with freewheel clutches. Whenever you wound the bike out in 7th gear with the geared motor, you could let off the throttle, put it back in first gear, and flip a switch to change power to the ungeared motor. With the inertia that the geared motor provided, wouldn't the ungeared motor have enough power to pull the bicycle even faster? Is this a feasible idea?