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Old 09-10-2018, 11:35 AM   #1
Join Date: Dec 2010
Posts: 87
Default The guy whose car is too fast with a new idea.

I'm the guy who is trying to slow down a model A project because it goes too fast to crawl around car and tractor shows. It has a standard A three speed and rear axle.
Recently ran across a "dual high underdrive". Looks like it would bolt up to the back of the three speed without much problem (or would it?) but would need some fabricating and machining to attach to the drive shaft.
My other question is, does anyone know how much it underdrives? As near as I can find it is 1;1.57. Which I think means if my low speed is now 9 it would be 6 with this added.
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