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Farmall & IHC Tractors Discussion Forum
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Super M gear ratios

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CenTexFarmall

03-19-2008 11:23:33




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While I've got the cover off doing some cleaning, thought I'd actually count the teeth and find the actual gear ratio of trans and rear.

Final Drive: 5.62:1

R&P: 2.63:1

Input to countershaft: 2.7:1

1st: 2.32:1
2nd: 1.625:1
3rd: 1.25:1
4th: .91:1
5th: 1:1

So overall gear ratios are:

1st 92.59:1
2nd 64.85:1
3rd 49.9:1
4th 36.3:1
5th 14.8:1




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AndrewFromNS

03-19-2008 21:07:30




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 Re: Super M gear ratios in reply to CenTexFarmall, 03-19-2008 11:23:33  
Very good info! Useful to know, too, as it would allow one to calculate road speeds with your size tires.

On that note...does anyone have this information for a 1954 Super-C? I think most online references state something like 10.5mph for a given tire size, but I'd like to be able to calculate my speeds in all gears, just for laughs.

Thanks guys!

AR



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Bob M

03-19-2008 19:15:07




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 Re: Super M gear ratios in reply to CenTexFarmall, 03-19-2008 11:23:33  
Good info! I printed a copy and tucked it in my SM parts book.

Thanks for sharing!



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