Crystalyte 5305 Brute , 48V with 4840 controller

Hi All,
Does anyone know where I can find out what the no-load max rpms are for a 5305 Brute, 48V, 4840 ? ie: lifting up back wheel and pinning the throttle.
I need to verify that the motor is in fact a Brute and not a Cruiser.

Thanks!
Vinny

I have no idea what the free running RPM are for those motors. The on road speed is around 23 for the 5305 and 33mph for the 5303 at 48v with a 40ah controller.

You can compare what you have here: http://www.ebikes.ca/tools/simulator.html

Thanks for the reply Drunkskunk.