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Is there any tricks in gearing that would allow the same sort of gear ratio as a spanish burton pulley system(a special arrangement of three pulleys that can generate more purchase(5:1)that would ordinarily be possible with three single pulleys)?

If you have a better suggestion for tooth shapes or numbers, I would be glad to hear them. As I said, I am an inventor who is capable of some mechanical engineering, and only because of all the math I took for chemistry in college, and of course Perry's handbook. The only firm requirements are...

Gearguru, Thank you very much for all your help,I really appreciate it. you can email me at Tombel74@uwosh.edu the gear calculations were really just a quick of the cuff guide to what i needed, so i didn't bother to mess with backlash or fillet shapes or undercut. Thanks again.

gerguru, you got it perfect man, but what to do with thosae pesky annulus teeth? How to draw annulus tooth profile, how to machine? supercritical

gearguru, the gear specs i have so far are as follows; central gear 8 teeth, pitch diameter 2.5",diametral pitch 3.2",addendum .3125", dedendum .3906", tooth thickness .4908",25 deg pressure angle,outside diameter 3.125" then there are 2 oposite gears to...

I'm actually a chemist by trade, but an inventor by night, I need to custom build my own equipment for a particular home project. What i need to know is how to acurrately draw and fabricate from standard stock 3/4 acrylic plate, a large annular involute gearset with a 6:1 reduction.The outer...