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Old 04-13-2012, 05:48 PM   #1
30ratrodder
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Default speed-o-meter gear

Hi All
I have a closed drive shaft for a 1940 rear-end. I'm looking to find a new gear for the speed-o-meter. I don't know how you would call it but it is for the little aluminum part that is on the tube.
Thanks
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Old 04-13-2012, 05:56 PM   #2
super flat
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Default Re: speed-o-meter gear

speedometer drive unit. be aware there are different tooth counts for the tire sizes and gear ratio. Gary
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Old 04-13-2012, 05:58 PM   #3
Nirvana
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Default Re: speed-o-meter gear

what number do you have on the turtle now?
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Old 04-13-2012, 07:02 PM   #4
Bassman/NZ
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Default Re: speed-o-meter gear

It's called a turtle and with standard rear 3.78 gears it has 19 teeth. A 3.54 rear will have 18 teeth, 4.11 will have 21 teeth.
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