[Kevin Sevcik]

ah-haha. But the whole point is the programming and controls challenge presented by the 2 wheel system. Else you'd just slap a few more wheels on there and call it done. Besides which, you really wouldn't have enough room under the wheels to balance an entire person out. I mean. 150 lbs about 30" above your pivot, vs. 12" below the pivot if you've got absolutely huge wheels... That's 375 lbs of counter weight, at least.

Certainly putting your batteries and everything else as low as possible will help a bit, but you can't really hope to mechanically balance it with anything short of a really tiny piece of neutronium.