KC Racing KCR-X89Drag ESC

Input: Reverse Polarity Protected MCU: Arm 32-bit Cortex Maximum permissible voltage: 16.5v Size: 27.7mm x 18.7mm Weight: 1.9g The X89 DRAG ESC is tested and found to be reliable for use in drag racing when used with a minimum 4S BLDC. Recommended Chassis/Body: KCR-RH.BL / Lexan Funny Car Recommended motors: KC Racing 1207.6000Kv A 1404 motor has too much torque for the 32-bit ESC and erratic start line results will occur. Recommended tire sizes: 1.01” x .300”. Wider than .300” tires may look cool but will likely cause motor commutation errors that could lead to motor and/or ESC failure. Recommended gearing: 64 pitch Pinions: 15, 16, 18. Spurs: 46, 47, 48, 50 The ESC is a complex piece of electronics. If for any reason the motor starts to stutter you must stop and find out the reason. If you continue, the ESC may get very hot and cease to work.