or you can get a 180 motor. speed, torque, almost zero mods (it's just longer....even works with the stock spacer and heat sync), and less than $10. my hummer would pull pretty easy wheelies with it, with stock electronics.
but after about 8 months of use, the stock gears started to really wear down and grind/bind. so I upgraded to gpm composite gears. I may not continue to use this one though because of the tires I'm using....it'll be very hard to get the clearance I need...
http://www.undergroundxmods.com/cata...6e6ca29cd452e1
http://media.putfile.com/Around70
nice work none the less!! I'm very seriously considering using an airplane setup for my crawler....but I'm not sure.