ScooterMan101 wrote: ↑
Dec 24, 2017 1:06 pm
Only 12 amp pull from the battery at 12 mph going up a 10 % grade on your trike impressive.
I do not look much at my C.A. when going up that steep of a hill , but last time I did I thought I saw a 22-25 amp pull at around the same speed, 12-14 mph, on my 6T rear Mac motor. That is quite a difference, know why that would be ?
First Merry Christmas.
Volts x Amps = Watts
Speed x Torque = Power
Volts to the motor is determined by speed not the battery voltage. The motor is a generator as it turns generating voltage potential. The faster it turns the higher the voltage; that factor is known as a Voltage Constant. Calculating power is done by the motor voltage x amps, not the battery voltage x amps.
When you feed amps in (or take them back for regen) it occurs at whatever the voltage level is determined by the speed.
The 12T has about twice the Voltage Constant of the 6T. Less amps, more volts. 12T reaches battery voltage level level twice as fast as the 6T, but consumes half the amps for the same number of watts.
Power is measured in watts.
Both the 6T and 12T will take the same wattage (mostly).