Originally Posted by gguertin145
Nice! I was hearing a 35/72 and thought that seemed high for a gearing.
Thanks for the help! I will have to test this weekend and see how it goes.
That is closer to what you would run if you were running 0 endbell timing, but we have found that the D3s run REALLY strong geared a bit lower, with the endbell timing turned up. It's my opinion that most people over-gear their 17.5s... usually the buggy is still increasing in speed before the car hits the end of the straight, which means the gearing is too tall. You want to gear the car so it reaches max RPM before the spot on the straight where you would brake or let-off.
(start with the 31 pinion, and keep an eye on temps... the D3s should run really cool, somewhere around 110-120 after 10 minutes)