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Case Tractors Discussion Forum
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VAI geared too high for tractor pulls?

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dpski

04-02-2008 18:53:49




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Just curious about this. I have a '43 VAI I've been tinkering with. Engine runs strong, still have some other things to "tinker" with, but contemplating trying out a low key tractor pull or two. These are nothing serious in my neck of the woods. More like country fair type stuff in Sept. The one I'm thinking of only has two weight classes, small and large and less than a dozen tractors are usually in the small.

Anyhow the VAI seems to have pretty tall gearing, so I'm wondering if it would not fare too well doing this sort of stuff. I'm not lookin' to win or nothing, I'm thinking more like I don't want to stall the engine on every try.

Don't know if it's the final drive that's tall or just 4th gear, but it's seems to move fairly quick even in 1st gear, so I'm guessing all the gearing is tall.

I'm not lookin' to get serious about it, just want to give it a go.

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Al47

04-04-2008 07:57:46




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 Re: VAI geared too high for tractor pulls? in reply to dpski, 04-02-2008 18:53:49  
I have a 43 VAI that I take to antique tractor pulls at the local fairs.I changed the rear from the tork tube back from a VAC. It now has same power in 2nd gear.Before it would run out of power and die in 1st gear. now it will usually go untill it spins out in 1st gear.I pull this tractor in 3000#and 3500# classes
Hope this helps Al



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Jim W.

04-04-2008 06:16:02




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 Re: VAI geared too high for tractor pulls? in reply to dpski, 04-02-2008 18:53:49  
I don't know about the '43 model tractors, but I know our late model VAI had a larger bull gear. This was to make up for the 24" wheels on the VAI. Also this helped these little tractors run down the highways better in 4th. Besides the obvious industrial and military uses, this tractor was sold in later years as a highway mowing tractor. For pulling, we took our bull gears out of a VAI and swapped them for VAC gears. If you are running stock pistons the gearing will hurt you a little, but remember you are only turning a 24" wheel. With more motor you can use the speed.

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