ive got some makitas but they are going in a grabber im building for now i will stick with the ryobi 1s i used in scruffy and night fury, they gave me no problems and lots of speed/power

which makita drill did you go for ?, i got 4 of the 6281d so estimated to speed of about 15mph in high gear

also the chassis has been a pain to make with all the angle and trying to keep the weight down is difficult but it will look like a more evil version of the original scruffy, more spikes etc...