I will gladly and happily say that these motors are not only fast, but they run REALLY cool. Thank you, Speed Passion, for such a great motor. I am having fun with mine. Coupled with the Tekin RS Pro ESC, this thing is a banshee! I am slowly keeping up with the fast guys, but that is because I need to figure out the gearing.
I am running a 4.9 FDR currently and the motor is not a tick over 130 degrees after some very hard running. I am not using a heatsink or fan. That is VERY impressive in my opinion.
Kudos, Speed Passion. I am now a follower.