Originally Posted by Zedsispeho

Hi Marcus,
I am currently running a 39T Spur and 18T pinion (as recommend by the manual I think). My motor (Hobbywing Ezrun 9T) this makes it a FDR of 5.87. The motor is running hot pretty quickly.
I have also tried running a 39T Spur and 19T pinion (FDR 5.56) and the motor was running even hotter and I couldn't even run faster laps
This makes me think that the default gear ratio is a too long for the weight of the car .
I have recently bought a 17T pinion to verify this assumption and I will do the same you for motor timing.
I will let you know how it worked after the run of the weekend.