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Old 06-09-2003, 09:23 PM   #1
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Default Best spur and pinion gear pitch

What's the best gear pitch to use for touring cars on a medium - large outdoor track? Does the 64 pitch gears really have an advantage over the 48 pitch gears aside from being able to fine tune the ratios better? Thanks a lot.
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Old 06-10-2003, 01:19 AM   #2
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64 pitch also has the advantage of getting stripped alot easier if tiny rocks or pebbles get logded between the gears....

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Old 06-10-2003, 01:25 AM   #3
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Default Re: Best spur and pinion gear pitch

Quote:
Originally posted by jedi
Does the 64 pitch gears really have an advantage over the 48 pitch gears aside from being able to fine tune the ratios better?
re Fine tuning...

Let's assume all pinions and spurs are the same equal price each.

For a decent range say, 10x 64dp pinions and 1 spurgear.

Or you could buy 8x 48dp pinions and 3 spurs (eg 68, 70, 72) that are close together.

Do the sums and there's no change in "flexibility". Change 1 tooth on 64dp, same as change 1 pinion and change the spur on 48dp.

Same cost, and the latter would give you "spare" spurgear too.
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Old 06-10-2003, 08:24 PM   #4
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The 64 pitch just let you fine tuine a lot easier is pretty much all it does. I noticed it cuts down on the sound of the cars drive system too.
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Old 06-11-2003, 05:55 AM   #5
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its fine doing that comparison but there are some other factors to consider, usually chaning the pinion is a lot easier than changing a spur.

on my car i have to remove half the car to get access to the spur.

also 64 pitch tends to run a bit quieter than 48 but its also more likely to strip.

each has pro's and cons.

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