I have the 45 amp ESC that comes with the Samurai. The ESC is plugged into the gear channel on my Rx and the motor is controlled by the gear switch, plus or minus 100%. When I switch the motor "on", I get a very brief motor response then it turns off. I feel maybe I've somehow messed up the programming on the ESC? I would like a copy of the instructions for this ESC or a link to a manual for it on line so I can reprogram it. I would just buy another one to replace it but Hobby Express is out of stock on it. Thank you for any response. Ford Rollo fordrollo@cox.net