Gear ratio April 22, 2019 04:24AM
Is there a formula to figure out gear ratio. i have a 666 rear end with 16/49 ring and pinion. Constant mesh gear 41 top 28 lower. 2nd gear 48 top, 33 bottom. 3rd gear 44 top and 37 bottom. Any help would be great!
Thank you
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Re: Gear ratio April 22, 2019 05:24AM
The ratio of any gear set is driven divided by driver. For a series of gear sets like this you multiply the ratios of the sets together.

To compute your final ratio you will also need the tooth counts on your bull gear and bull pinion.

2nd gear 28 / 41 X 48 / 33 X 49 / 16 X #Bull teeth / #Bull pinion teeth
3rd gear 28 / 41 X 44 / 37 X 49 / 16 X #Bull teeth / #Bull pinion teeth
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Re: Gear ratio April 23, 2019 01:57AM
Thank you
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Re: Gear ratio April 22, 2019 07:10AM
2nd gear = 16.59
3rd Gear = 13.62

bull gear ratio is 5.5:1, all other math is in Deere Puller's response.
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