[Thomas Porfert]

Well...doing some calculations you are geared for 85 - 100 MPH depending on tire diameter (calculated @ 5" - 6"). That motor is going to be pulling a massive amount of amperage. You are most likely overamping the ESC and/or you have excessive ripple voltage. The continuous C rating on your batteries is far too small for such an extreme setup. We recommend a minimum of a 30C continuous discharge for a normal setup and in an extreme setup you want to have a 40C+ continuous discharge.

With this setup you will continue to burn up ESCs because of the extreme nature of the setup (85+ MPH on a vehicle with horrible aerodynamics). These systems will not be covered by the warranty as the failures are due to an extreme setup and inadequate batteries; we should have never covered the ESC replacements under warranty. We do not warranty any high speed setups. Upgrading to the Mamba Monster could help increase the life expectancy, but those batteries will kill a Mamba Monster and the high speed setup will stress the motor and ESC.

A "safer" speed setup would be to run 6s (with the appropriate discharge) with a larger spur and smaller pinion. The higher voltage will help reduce the amp draw, reducing stress on the ESC, motor and batteries. This would still be a non-warranty setup because of the speed, but the lower amp draw may help increase the life expectancy. Also you should only be running for 1 high speed pass, stopping, letting things cool off before running again.

Thomas Porfert
Tech Support
Castle Creations