team 61 has been doing tracks for over 10 years and we stop due to Breco flex could not make us a belt that would not rip. the power we where using where ripping the belt. at $340 a belt we went with wheel last year. Had some good results. Track are great and are better than wheels only if you can keep them from breaking. the power that is given to us now is way to much for the Breco flex belts.
we go with 6 wheel system almost the same results as a tank drive system
if you want to see the tracks go to our web site
http://www.valleytech.k12.ma.us/robo...photos2004.htm