Originally Posted by
D.a.v.e
I run a 19 or 20t pinion with that motor but we have a big track.
I also really like Andy's set up a lot but have not got around to playing with the Diff's much. I bought some 500k for the center but never got around to it this year (still have 300K), I also wanted to play with some lighter oil for the rear as I have his recommended 60k in my setup now.
I have yellow, red , white, purple, and black springs but I always end up back at the blacks because any softer and the chassis pitches around too much. This car seems to like the center diff. Lower than the front when I had 300,300,60 it would spin the rear when you hit the throttle. But my track is so small I spend a lot of time at half throttle or less.