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01-17-2008, 09:58 PM

#9155

convikt

Tech Master

iTrader: (27)

Join Date: Nov 2006

Posts: 1,038

Trader Rating: 27 (100%+)

84 s
45 p
=
4.666

spur / pinion = ( ) x 2.5 = fdr (I'm sure you already know)
Just play with a calculator, based on what gears you can find at the hobby shop. Hope this helps.

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