yeah I also run 13/62 on my CRT, but im running the 2.5d on 5s.(brings about the same rpm as the 1y on 4s) it runs cool and the speed is just about right. I used to have a revo that pulled up 43 on he speed calculator and it felt way to fast, so I would definately aim for something in the high 30s at MAX.
I'm running 15t pinion with a 1600kv Medusa on 5s in my X2 CRT.
About 40mph , heaps of torque and out runs the nitros on the top end at the track , big track by the way .
No heat issues at all .
Last edited by ffactory666; 10.16.2008 at 04:27 AM.