rear drive ratio

big roller · Jun 21, 2017

I have an 1855 Oliver with mfd. I was wondering how many times is the driveshaft to the front supposed to rotate during 1 revolution of the rear tire? With help and while in 4 wheel drive, I counted 29.5 while the tractor drove ahead for 1 revolution of the rear tire. I was wondering if I used the right method and have the right number? Would it have changed if the wheel was off the ground and turned by hand?

larry duda · Jun 22, 2017

The gear ratio number is stamped into the top of the differential assembly that bolts into to the big axle housing pig on the front axle. I think there are 3 or 4 different ratios they used.

big roller · Jun 22, 2017

Sorry, I was referring to the rear part of the tractor with the Big tires. True as you said for the front diff it did have a tag but the ratio on it was wrong. It said 24-1 but it is definitely 20 rotations to one. Now I want to make sure I get the rear ratio right.

rear drive ratio

big roller

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larry duda

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big roller

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