Here is a little bit of data from a previous post:
http://www.chiefdelphi.com/forums/sh...8&page=1&pp=20 Look for Paul Copioli and Garry Dillard's posts.
As far as the life of the mcmaster inclined conveyor belt material, when team 60 tested it, they found that it was very close to the coefficient of friction of other materials, but was much longer lasting then other types. However, this past year, the grate on the ramp did just that, grate the tread. Assuming that we have another flat carpet playing field, it holds up quite well.