Originally Posted by ThunderPowerRC

What we have found is the taller the gear the less timing you need to use. In non boost 35deg seams to be the magic number. I wouldn't go more that 38deg. As all it will do is cause heat. We also run fans on the motors here connected direct to the battery. this helps keep the motors in the temp range you need. I know guys like to crank 40 into the motor, and all it does it cause heat and will burn up. The best is stick with 35-38deg and play with gear. Remember car set up is also important as if your car pushes your you will feel like the motor has no power and will cause higher temps. You almost need a car on the edge of free and keep it rolling forward. If you can do this then you can take advange of the higher rpm's the motor makes.