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Unread 05-11-2006, 09:08
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Travis Hoffman Travis Hoffman is offline
O-H
FRC #0048 (Delphi E.L.I.T.E.)
Team Role: Engineer
 
Join Date: Sep 2001
Rookie Year: 2001
Location: Warren, Ohio USA
Posts: 4,045
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Re: pic: Team 610 Off-Season Tank Drive Prototype

Just wanted to share a pic of our tank tread tensioner design. We came up with this design after breaking so many belts in 2004. We only broke 1 belt in 2006, and we believe that was due to someone overtensioning the tread in the pit.

Basically, for each of our tread modules, the non-driven pulley wheel axle rides inside slots on the frame. A u-shaped 1/4" aluminum assembly straddles the pulley wheel. This U-assembly is pushed by a bolt which passes through a threaded hole on a thicker frame member. Turning the bolt pushes against the U-frame and provides the tension adjustment. A jam nut lets us lock the bolt into position once the sweet spot has been found.

Big? Yes. Beefy? No doubt. But the results speak for themselves.
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Travis Hoffman, Enginerd, FRC Team 48 Delphi E.L.I.T.E.
Encouraging Learning in Technology and Engineering - www.delphielite.com
NEOFRA - Northeast Ohio FIRST Robotics Alliance - www.neofra.com
NEOFRA / Delphi E.L.I.T.E. FLL Regional Partner
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