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Unread 27-01-2012, 20:52
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Re: Top/bottom roller shooter vs. bottom roller only

Quote:
Originally Posted by dragonman View Post
Ok so, I am design our shooting system and have designed a two roller shooter, however I was informed there is an optimum roller diameter based on the rpms it will spin and the ball diameter and I was told there where calculators. I found jvns design calculator but there wasnt anything about shooting. Does anyone know about any calculations and formulas I can use or of a Design calculator for this?
There should be an optimum diameter, but it will also depend heavily on your design, including variables like how many motors (not just RPM, torque will play a role), moment of inertia (if you have a flywheel, or just the inertia of the roller), friction in the bearings, and perhaps most importantly, how much you compress the ball. An analytic solution for the best diameter would be difficult if not impossible because some of those variables are very hard to measure and quantify. So your best choice is probably just to test a bunch of rollers until you get something that works.
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