||I haven't had this too long but I have it paired up with a Novak Ballistic 550 4.5T motor running on 2S 13/54 gearing on my Slash 4x4. I replaced the Castle SCT ESC with this then decided to give the Novak motor a try.
The ESC fan never seems to come on but I know it works because I've given it power directly. Basically the ESC has ran so cool it never needed to come on. My truck goes very fast and smooth. I haven't had issues with this ESC which is more than I can say for the one I used to have.
The only extremely minor thing was one of the bullet plugs was a tad too tight of a fit and it was very difficult getting the male bullet plug to plug in.
I run it in smart sense mode, the motor never gets too hot. I haven't measure the temp but I can hold my finger on it indefinitely after 10 minutes of straight speed runs.
For the money I highly recommend this ESC.