[Coyote X]

Interesting charts on that motor running at 48v and 72v





From the thread where I found those charts at:

The X axis of these motor dyno charts is almost always torque, as the way they're tested is to have the motor drive an increasing load (i.e torque) and measure how the rpm/volts/current/etc changes.

In this case I believe the x-axis units are inch-pounds, 1 in-lb = 0.113 Nm. This would make sense with the Watts Out curve where take the 160 in-lb mark for example = 18 Nm, x 2500 rpm / 60 * 2PI (converting to radians per second) -> power of 4716W, looks about right on the Watts Out curve.

Edit: Interesting though that the amps and inch-pounds happens to be pretty much 1:1 - coincidence I suspect, but hard to fault Electrocycle's assumption! (Being a permanent magnet motor, it has a constant amps to torque ratio.)

So That means I would lose 8% of my acceleration rate going from 3.9:1 to 3.6:1 assuming I am accelerating at the current limit of the controller. That chart is very hard to figure out what they are talking about so I could be wrong I think I will order the 10/36 gears and mount them. Trial and error is a lot more fun than research.