[lukevanoort]

Putting the chips back in would help a lot, but that is ~10lbs of motors. If that is unreasonable, try putting a smaller sprocket on your transmission (remember the KOP one isn't 5/8" it's metric) You won't go as fast, but it'll pay for that loss with the additional pushing power and make it easier to aim your robot. All this is sort of pointless though, if you don't have the traction to harness it. So, if your using, say, the KOP Skyways you aren't going to be able to push much whether you have two small chips or four small, two large, a pair of FPs, and a 16 speed gearbox.