Could some one explain gear pitch to me?

[sudo]

I've been doing some reading, but all that I have learned is the gear pitch is how tall the teeth on the gears are, and that a gear with x pitch and x teeth has a 1" pitch diameter, which is the diameter at the prefered tooth mesh. So my question is, how do I find the pitch diameter if all I know is pitch and tooth number? I'm working on a scale t-case with fixed tooth counts, and need to know the spacing between the input/output shafts. Planning on using 32 pitch gears.


[edit] DER! After about one minute of thinking, If a 1:1 ratio of pitch and tooth count= 1 inch, than PD= tooth count/ pitch, b/c a smaller tooth count = smaller gear. Please correct me if I'm wrong. [/edit]

 

[Harley]

If you want a real easy way to make things very accurate with close tollerances then download emachineshop. You can specify your pitch and number of teeth for each gear, then place them where you want and get your measurement.

Good Luck

Josh

 

[roktoy]

Stock drive products......

http://www.sdp-si.com/D785/D785Cat.htm

Has listings for all the pitch diameters you need. Just look up spurs and pinions in the pitch number you want.

Jay

 

[ON THE FARM]

number of teeth devided by the pitch = pitch diameter.

90 teeth
48 pitch
=
1.875 pitch dia.