@speedy; did you ever ran/had an XL motor?
The novak hv's are rather weak; they compensate it with a higher RPM, but this will result in more heat and the controller needs to work harder as well. (higher losses)
on the novak; the magnet is too small to deliver a 1800w burst like an XL can do; not to mention the torque difference with both motors.
I'm not saying they are bad, but they just don't have got the balls of an XL motor; Period.
I just measured my 7XL and 9XL, and the bearing is perfect centered. What did you used to measure yours and how did you do it?
that would work at this point? the hvmaxx is a two pole motor? the problem is with neu motors. it works without the sensor ofcourse, but the weak part of the hvmaxx setup isn't the controller. Griffinru used a 7XL on his novak controller, and it had more power and torque than the original motor. (he used the hvmaxx motor as a sensor)
A buggy has got a way too low gearing ratio for a hvmaxx; the kv is simple too high.