Moving from MT to Truggy

[simplechamp]

I agree with dirt101. Running 5S would put you right into that 30k RPM sweet spot, and then you could gear down a little bit and still be at 40mph with a lower rollout. On my vehicles I try to keep the rollout no higher than 1.5, and have never had any heat issues when doing so.

[crazyjr]

Originally Posted by simplechamp

I agree with dirt101. Running 5S would put you right into that 30k RPM sweet spot, and then you could gear down a little bit and still be at 40mph with a lower rollout. On my vehicles I try to keep the rollout no higher than 1.5, and have never had any heat issues when doing so.

What exactly is rollout? I seen it shown in BrianG's calculator ( the ratio for 1:1 rollout), but I never really paid attentioin to that. I just geared it till i was comfortable and liked the heat of the motor