This thread may be of interest: http://www.rctech.net/forum/electric...highlight=dyno

Some measurement tools and info for the windings and rotor:

Racer's Measurement Systems

Fantom Brushless Motor Tools

Besides the rotor shimming mkiiina mentioned, the sensor board can be shimmed to get the quickest triggering of the phases. Maximizes timing advance for blinky class. Can't remember the recommended gaps I've seen mentioned.

Some guys measure the free run amps in the car to adjust endbell timing to track and help get somewhat consistent settings from motor to motor. Can't remember what threads have info.