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Re: Sprockets in a Triangular Arrangement
This is a matter of some debate, but the rule of thumb I usually follow is that there should be almost 180 degrees of wrap around all driven or driving sprockets. While your design would work, adding an idler or two would help (a) decrease the load on each tooth, (b) decrease the likelyhood of the chain skipping, and (c) give you a good place to put in a chain tensioner (since the chain will loosen as it wears).
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Zan Hecht
Scorekeeper: '05 Championship DaVinci Field/'10 WPI Regional
Co-Founder: WPI-EBOT Educational Robotics Program
Alumnus: WPI/Mass Academy Team #190
Alumnus (and founder): Oakwood Robotics Team #992
"Life is an odd numbered problem — the answer isn't in the back of the book." — Anonymous WPI Student
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