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Old 09-19-2008, 03:14 PM
Join Date: Mar 2008
Location: Glendale, CA
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Default Issues with differentials. Need help!!

I had MIP's on my RC18t and everything was perfect until the rear diff. broke. Yes, even though they are steel, they still can break. I replaced it with GPM Derlin diff to try it out and see how it'll work out. Now I can't get it right. Either the diffs are too loose, the rpm of the motor goes up and the car goes half as fast as before, or the diffs are too tight and the car has really hard time moving and makes weird noises. How tight/loose are the diffs supposed to be? Am I having problems because i'm using GPM in the rear and MIP in front? I'm running Sidewinder with 6.9K, 6 cells and 55t spur and 18t pinion but had the same issues with stock 60t/14t.