Castle 5th scale

[Arct1k]

Motor RPM stats have generally always been much higher than a motor has been specified to run at (I was going by what castle have on the web site). General rule of thumb used to be 35K rpm for 1/8th scale.

8S on a 1518 is a much higher switching rate than the ESC was intended to run at - You are switching at more than twice its intended switching rate.

It will be interesting to see if that is possible route cause...