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30ratrodder 04-13-2012 05:48 PM

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

super flat 04-13-2012 05:56 PM

Re: speed-o-meter gear
 

speedometer drive unit. be aware there are different tooth counts for the tire sizes and gear ratio. Gary

Nirvana 04-13-2012 05:58 PM

Re: speed-o-meter gear
 

what number do you have on the turtle now?

Bassman/NZ 04-13-2012 07:02 PM

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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