[starscream]

To what end?
How do you figure out how high to gear a BL system? trial and error could end up to be an expensive venture if your not careful ;)
I am running my revo with a center diff. The lowest gear ratio I can achieve is 18.5:1 and at 14 cells the motor temps are high and the speed is low. This is quite contrary to my previous setup with the two speed transmission where the gear ratio was much lower 28.24:1 in 1st and 21.35:1 in second at 20 cells. The top speed of the two speed transmision was much higher.

My experience with my BL system has been that the higher rpm's at lower gearing is where the power, speed and safe operating temps are at. This is in comparision to the stock Revo gear ratio's of 23.85:1 in 1st and 16.54:1 in 2nd. I guess I'll have to experiment to find the sweet spot. The other issue I am experiencing with the center diff is that the drive train does not free wheel like it does with the two speed tranny. I am thinking about fabricating a clutchbell for my motor with low tension springs so that the motor can disengage from the drive train when power is no longer applied. This entails using a manual break but I believe this may also help with motor temps.