06-01-2016, 20:52
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no bag, vex only, final destination
AKA: Pinecone
 FRC #0228 (GUS Robotics); FRC #2170 (Titanium Tomahawks) Team Role: Mentor
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Join Date: Dec 2008
Rookie Year: 2006
Location: Glastonbury, CT
Posts: 7,630
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Re: pic: Single Stage Ballshifter
Quote:
Originally Posted by Rob Stehlik
I didn't spend a lot of time looking at the alternatives, but the selection of ball shifter gears is pretty limited. When I found a combination that worked and gave a 1.82:1 spread, I stuck with it. The thought occurred to me that making your own ball shifter gears wouldn't be too difficult. It may open up some interesting possibilities.
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For comparison, the COTS ball shifter has a spread of 2.65:1, though it can be customized to 2.16:1 or 3.68:1. A prevailing school of thought is to have one gear for general use with a high top speed, and a low gear that is much slower designed for pushing indefinitely without tripping circuit breakers. This gearbox's tight spread would either have a limited top speed or a low gear too fast to accomplish indefinite pushing. If your design objectives are different, that's fine; I was just curious what your intent here was.
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