View Full Version : Pinion size Viper motor

07-22-2011, 09:28 AM
I have just bought a Viper 6013 1300 kv motor for my T-Rex 550. What pinion size should I use with this motor?

07-22-2011, 09:33 AM
I use a 16 on mine with a 90% flat TC works awesome.

07-22-2011, 09:43 AM
i have used the 16 with gov at 2200 rpm and it flew great. i did switch to the 17 and ran 2400 rpm and it came down very hot. still not sure if i want to change back to the 16. im going to try the 17 at a gov 2200 rpm and see how it goes