Quote:
Originally Posted by Madison
You can calculate diametral pitch with:
Pitch Diameter/Number of Teeth
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Actually, that would be:
number of teeth/pitch diameter
(e.g. 32 teeth/1inch=32DP)
But since pitch diameter is hard to find you can use:
(number of teeth + 2)/Outside diameter
but that is less accurate so a 32DP gear could yield 29.99, or 34. It really works well for some gears, but for others the result will leave you scratching your head.