24-04-2014, 07:56
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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: 7,601
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Re: pic: Gear Drive Concept
Quote:
Originally Posted by DampRobot
What's the benefit of using gears in the drivetrain over belts or chain?
IMO, gears are heavier, less flexible, more expensive, and easier to jam than either chains or belts. Perhaps they're harder to break (ie, to break them such that they will stop transmitting power), but I'd bet they're a lot easier to jam by getting something sucked into them. Also, having so many gear to gear contacts, I see a lot of places to lose efficiency.
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Properly designed, on a system already using 8 or more wheels, gears are a small weight increase in exchange for not needing a lot of maintenance or attention like chain can. Chain or belts can be better but it's not an absolute; for some teams / robots a gear drive is a valid solution. Don't really know what you mean by "flexible" or why it matters here.
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