Quote:
Originally Posted by artdutra04
While GT2 is a better torque-carrying profile than HTD, I've used 5mm pitch, 9mm wide, HTD profile belts* on multiple FRC robots since 2009 without any problems.
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We used 9mm wide, 5mm pitch, HDT belts on our 2011 robot, which was geared for ~12 fps. Whenever we went from full forward to full reverse the belts would ratchet from slipping. Despite this, they lasted the season with minimal wear.
However for caution reasons we used 15mm GT2 on this year's robot and we feel much better about the extra security for minimal weight. We will continue to use 15mm belts in the future for drive train applications and 9mm belts elsewhere.
Also pulley size is a factor, and there is potential that the pulleys we used had too few teeth, as this year we went for pulleys with about 7 more teeth (I don't remember the actual numbers off the top of my head.)