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Re: VEXPro - After the season
Quote:
Originally Posted by MICHAELABICK
... We have bought boraches for 3/8" and 1/2" hex, so we can hex anything we want.
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^This.
For the first time in years with FRC teams (starting 1996), a team I am part of built a robot using NO KEYS at all. Everything is 3/8" or 1/2" hex. (Well, the CIM pinions are still keyed.)
I also really like the 1/2 tube shaft. It makes quick-change dead axle wheel set-up very easy. Our wheels this year are AM 4" performance with 32T #25 sprockets. We cut-and-faced our axles 2.5" long, then set up the sprocket axial alignment using ABS spacers parted to the correct length on one side of each wheel, with a shaft collar on the other side. A 1/4" bolt through the middle holds the wheel-sprocket-axle assembly in place between our slotted frame rails, and a simple two-hole tensioner adjusts the C-C distance to suit the chain length. Wheel changes are really fast and can be done without removing bumpers. It's the little details that excite me. 
__________________
Richard Wallace
Mentor since 2011 for FRC 3620 Average Joes (St. Joseph, Michigan)
Mentor 2002-10 for FRC 931 Perpetual Chaos (St. Louis, Missouri)
 since 2003
I believe in intuition and inspiration. Imagination is more important than knowledge. For knowledge is limited, whereas imagination embraces the entire world, stimulating progress, giving birth to evolution. It is, strictly speaking, a real factor in scientific research.
(Cosmic Religion : With Other Opinions and Aphorisms (1931) by Albert Einstein, p. 97)
Last edited by Richard Wallace : 02-04-2013 at 21:38.
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