neptronix wrote:Watts are the ultimate determinate of range, then you have to calculate aerodynamic and inefficiency loss into the equation.
The best test is a real world test.
Voltage does directly effect top speed, however the faster you go, the more amps you need to sustain high speeds, so a super high voltage with a meager level of amps will get you a low speed.
In layman's terms, volts are like horsepower and amps are like torque. An engine needs a good balance of both to perform well.
And every motor will go a different speed given a different level of voltage. My old geared hub motor would do 18mph max on 36 volts.. my new, and much larger geared motor will do ~28mph max on the same voltage, but it requires more amps to do the same job.
Why dumb it down, when you can just make it wrong.