accuracy of ratio


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Posted by steve green on May 05, 2002 at 23:59:12:

I am new to the gear industry.I used cpc ratio to calculate a gear set.The ratio was accurate to 4 places.I cut gear and noticed a slight helix to teeth.Ipondered this for hours.I decided to cut a change gear to get ratio perfect,and cut new gear with no problem.Question is how accurate does one have to be on ratio for commercial gears?


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