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Unread 30-09-2015, 02:43
Joe G.'s Avatar
Joe G. Joe G. is offline
Taking a few years (mostly) off
AKA: Josepher
no team (Formerly 1687, 5400)
Team Role: Mentor
 
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Re: Belt Driven Drive Trains

1687 and 5400 have been running 30t GT2 with 15mm belts inside of tubes for the past three years with no failures. It's overkill and we know it, but we like zero failure systems. Our resource set does not enable us to take the meticulous tensioning steps that a team running right on the edge like 971 does, so we like the insurance. When we were doing research for our switch to belts, I believe we saw some pretty spectacular failures in 18t systems.

If clearance is your concern, perhaps consider an alternate form of structure. We do full sheet metal chassis builds with a multi-piece tube which contains our belts, and one of the many reasons that we love it is that we can make our channels any size we want, instead of being limited by commonly avaliable extrusion profiles. The tube height is often a pretty ugly decimal, but it doesn't matter for our fabrication process.
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FIRST is not about doing what you can with what you know. It is about doing what you thought impossible, with what you were inspired to become.

2007-2010: Student, FRC 1687, Highlander Robotics
2012-2014: Technical Mentor, FRC 1687, Highlander Robotics
2015-2016: Lead Mentor, FRC 5400, Team WARP
2016-???: Volunteer and freelance mentor-for-hire
 


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