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06-09-2007, 07:38 PM
| #1 |
| Rock Stacker Join Date: Feb 2007 Location: Portland
Posts: 53
|  Could some one explain gear pitch to me?
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] Last edited by sudo; 06-09-2007 at 07:44 PM. |
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06-09-2007, 10:13 PM
| #2 |
| 20K Club   Join Date: Jul 2004 Location: Sending illegals home one Hayabusa at a time.
Posts: 22,981
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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 |
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06-09-2007, 11:09 PM
| #3 |
| Dirt Addict   Join Date: Jan 2004 Location: Stumblin' thru the parking lot of an invisible 7-Eleven
Posts: 1,053
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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 |
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06-10-2007, 08:44 PM
| #4 |
| Quarry Creeper Join Date: Aug 2006 Location: NORTH TEXAS
Posts: 202
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number of teeth devided by the pitch = pitch diameter. 90 teeth 48 pitch = 1.875 pitch dia. |
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