A very nice drive train. 6-wheel drive for a rookie team is a nice accomplishment. We had a 6-wheel drive this year and used a similar setup. We had 2 sprockets on the end of the @!#%@%$#%#

Banebots gearboxes with chain to the middle and rear wheels. We also had #25 chain from the middle wheels to the front wheels. the way the chain went onto the wheels was different than yours:
........................\...../
.........................
|__|
.
...***************.............
..*************************
*****..
|_______|.............||.............|_______|.... ............................|_______|
..........................
***************
Phew that took a while to make.

I do like that idea of all the chain wrapping around the sprockets. but we managed to get our drive sprockets lightned on a lathe at a competition so I doubt it would be better to add extra chain on our robot. Very nicely done though!
