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> Gear Ratios
yeahmag
post Apr 15 2016, 03:21 PM
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I have Dr. Evils DVD (bought it forever ago and have yet to watch it) and am hoping to have some fun building up a shorter ratio gear box. I have a huge box of 914 gears and was wondering if I can use the "Ratio Calculator" in the 914/901 gear ratio workbook to pair them back up. For example:

KA 22 : 31 1.41

In this case would a KA be a 22 tooth gear and a 31 tooth gear?

I understand that they are typically matched sets and I may get noise or increased wear if they are paired wrong.

Thanks.

-Aaron
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Mark Henry
post Apr 15 2016, 08:36 PM
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that's what I do!
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What you could do is paint the gears with dykem blue, lightly coat them with fine valve grinding compound and then spin them in a jig, Take them out carefully clean them enough to see the contact patch. You more or less want to see it in the middle, but not to deep on the root of the gear.

Once done you have to be sure to clean up the valve grinding compound 100%,
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