Originally Posted by
Barger
This is a bit of a problem....the 13.5 with the BONDED rotor is pretty close to the brushed motor...the 13.5 with the SINTERED rotor is WAY faster than the brushed motor...In Australia ...in Brisbane where I race the 13.5 with bonded rotor is allowed to run against the brushed motors but the 13.5 with the sintered rotor is illegal...the 13.5 with the bonded rotor is the EX13.5...hope this helps
We have found at our track that the closest brushless motor to a stock brushed motor is the Novak 17.5. You can run the same lap times with the 17.5 as you can with a brushed. The only difference seems to be that the top end on the brushed is higher than the BL while the BL seems to have more bottom end than the brushed. It all equals out in the end with the lap times. A 13.5 sintered rotor is a lot faster than a stock motor and should not be allowed in the same class as a brushed stock motor.