2200kv MMM

[Chadworkz]

Like nuz69 says, if your track's rules allow it, volt up and gear down. Higher voltage is more efficient, so it will get you longer runtimes. Just use the calculator to determine what gearing you need to run your current top-speed, but on the increased voltage.

You can also run a higher discharge (higher "C") LiPo to get more runtime. For instance; If you are currently running a 30C 4S 5000mAh LiPo, it produces 150A. If you upgraded to a 40C 4S 5000mAh LiPo, it would produce 200A, which would give you longer runtimes.

[nuz69]

Ok, thanks Mike for this explanation, it will help many people to understand timing issues ^^
But here in Europe, racing = geared for 43-45 mph and a 1512 just can't run "cool" in a truggy in this condition, no matter the smoothness of the driver finger... Many people encountered heat issues with the small tekin motor in buggies with theses speed and they use now the truggy version of the motor in their buggy. Sometimes they still have heat issues .
Maybe in USA where the track are relatively short compared to ours, you can use a 1512 in a truggy or buggy geared for 35 mph, but in the European, the tracks countains massive hard turns with long straight line which requires high gearing, and we just can't use small 1512 motor, mean temp for drivers go over 180F wen its 70 outside :(, and the vehicle is a buggy ...
Many people use then neu 1515 or equivalent Castle, but manage to run them at 140-160 F in buggies. I know someone who run a 1518 in a light hyper 9e and his runtime is better than with his 1515...
Geared for 35 mph, i would say "maybe" it can increase runtime.
But for more than 42 mph, I have serious doubt.
Scooterboy, what is the temp of your motor at the end of one run ?