Quote:
Originally Posted by dragonman
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?
|
For a 2-wheel (top and bottom) shooter with both wheels the same diameter and powered and spinning at the same speed: If you assume that the ball exit speed is equal to the tangential velocity of the wheels then
wheel rpm = 720*V/(pi*d)
V is ball exit speed in ft/sec, and
d is wheel diameter in inches
For a one-wheel shooter, the required rpm will be approximately twice that.
As for motor selection and gear ratios, here are some thoughts:
http://www.chiefdelphi.com/forums/sh...3&postcount=15