[dradius]

Ah, didnt see that new post at the same time--wonderful information, thank you.

Frankly, fixing a few bugs in the design itself, weve had few problems placing a tank drive operation in our robot. the friction it encounters didnt seem too bad; however, we also used larger wheels--part of the reason the design ultimately wasn'y streamlined enough.
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so, what do you suggest from a personal standpoint instead of using bevel gears? we made a prototype, and there didnt seem to be too many issues. we were originally concerned with the amount of play in the gears, but it didn't seem too bad. then again, i havent made a fully functional robot with those kind of wheelbases.