Quote:
Originally Posted by philso
I am more concerned with the radial motion of the belt towards the pulley when the belt is coming onto the pulley and the radial motion of the belt away from the pulley as it is leaving the pulley. I am interested to know if the total run time in an FRC robot application will cause significant wear.
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I was also speaking from experience here. We cram belts right next to each other on pulleys without flanges and we've never had significant wear on the belts, even on the belts with over 100 hours of run time. This is totally fine in FRC. The window for belts not moving in the same direction to contact each other is very very small.
Quote:
Originally Posted by Oblarg
Looking at the rated torques, I think it extremely unlikely that we'll ratchet or break a belt with our setup (especially given that the torque ratings Gates gives are for extended use, and are somewhat lower than the effective maximum torque for the short service times they see in an FRC robot). 449 used 9mm belts on 36t pulleys without incident last year.
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I wasn't very clear in my post - I was trying to say 9mm / 42T is likely just fine. I just meant that picking 9mm over 15mm just because of the double pulley feature, independent of any other features, is not great.