Originally Posted by
trit215
What track are you running with 69/38??
If its a bigger style track I would go 34 or a 35 at the biggest with a 69 pinion. I have never heard anyone run a 38 with a 69.
GOT TORQUE BABY!!!
It's the way our Viper motors are designed.... Big Big Torque. When I put the HT rotor in, it was 40-69 and needed even more... I just didn't have anything bigger than that haha.
and almost everyone here runs 36-38 / 69 depending on their motor and car. Losi guys were a tooth lower than us. When I tried 34 69 my car topped out within the first 30 foot of the straight.......right now I fluctuate between 37 and 38. 37 has me top out about 20 feet before, 38 just as I'm about to enter the sweeper. They run oval on this track on other days of the week so it's wood jumps... that means layout changes every couple weeks.