9mm belt vs 15mm belt

[tim-tim]

IIRC, 987 typically uses 9mm belts for their drives. We have used 15mm belts, but are really considering switching to 9mm in the near future.

In all reality, it really depends on the design (geometry, torque, pulley dia, etc). The loads stated by Gates (or other belt companies) are for continuous run for an extended number of hours with a known load. The FRC application is much different than the "designed" use.