Viper R/C Copperhead ESC & VX4.39 4-Pole 540 Sensorless Brushless Motor Combo (3900kV)
[VIP6VSVX43901]

Viper R/C Copperhead ESC & VX4.39 4-Pole 540 Sensorless Brushless Motor Combo (3900kV)
william king - Rating: 5 of 5 Stars! Verified Owner Tuesday, June 19, 2012
Excellent product I installed it as a replacement for my velinon system that went bad on a 2wd slash. with the 23 tooth pinion and 3s lipo its unbelievably fast. And has excellent brakes much more precise than the velinon which always wanted to lock up on hard stops. On the stock gearing I can balance the truck on two wheels until I run out of road. Great price for a great system. Had one Small issue with setup the polarity was reversed on the motor simply swapping only two wires to the esc fixed it or by using a pro gauge
1 of 1 customers found this review helpful.