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Unread 31-01-2008, 09:35
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Miami Valley Planning Committee
FRC #0144 (ROCK Robotics)
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Re: Position idlers to get better chain wrap -- a question about good practices.

Quote:
Originally Posted by M. Krass View Post

Keep in mind when sourcing sprockets that the Toughbox output is a 1/2" diameter, keyed shaft. It's very difficult to find COTS sprockets that have a 1/2" bore and keyway. You may have better luck buying #35 sprockets from www.andymark.biz or www.ifirobotics.com, as those contain a bolt pattern that will mate directly with the Kit of Parts wheels.
As another source: McMster-Carr http://www.mcmaster.com
"Finished Bore" is keyed - just as Madison posted, be sure to check bore size and key size....page 1012, 9 tooth to 25 tooth are available in 1/2" bore for #35 Chain

We're also experimenting with new idler designs for chain drive system tensioning.
Chris H - A white paper would be great! The "Milwrights and Mechanics Guide" is tough for our kids to follow...
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Last edited by Dave Campbell : 31-01-2008 at 09:39. Reason: Thread topic