[simplechamp]

I want to say single-speed is the way to go for electric.

I think I can remember a discussion before about this. Some of the reason for nitro vehicles having a 2-speed is because nitro motors need to "wind up" to higher RPM before producing full torque. If you tried to start out in 2nd gear they wouldn't have very good acceleration, the nitro motor would get bogged down. So having 2-speed is effective for nitro.

For electric, the motor has full torque from startup, you can start from 2nd gear (or in most cases 2nd gear is just the main gearing, there is no high reduction 1st gearset)