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QUOTE (OWRacing @ 28 Aug 2004, 07:16)does the amount of teeth a pinion has matter?
Yes, the number of teeth matters in that the fewer teeth on a pinion, the more revolutions it must make to turn the crown (or spur) gear.

In other words, a pinion with 8 teeth must turn 3 times to turn a 24-tooth crown gear once.

Also of concern is the gear's "pitch". Though I couldn't tell you exactly what "pitch" means, you need to make sure that the pinion and crown (or spur) gears have the same pitch. This will ensure that they mesh properly.

-- Pete
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