Right now it's 5k in the center. The nitro guys are using 2k and are still wheely-ing, I just went thicker because these motors have more torque than nitro engines .
SH Z-Car, Custom Crawler, 8s Savage, 12s XTM XLB 1/7 buggy, 4wd 4-link rear/IFS Pro4 truck, Custom Hyper 10 Short Course, Belt-Drive Mammoth ST 1/8 truggy, 4s 17.5 MM Pro HPI Blitz