Thank You Bob! Sooo... the ring and pinion in this tractor are 43 and 6 teeth, 43 divided by 6 = 7.17 so the ratio coming out of the differential and going down the axle shaft into the 15 toothed bull gear is 7.1:1. The bottom 32 toothed gear divided by the upper 15 toothed gear is 2.133:1.
7.17 MULTIPLIED by 2.133 = 15.29361, so the final ratio at the wheel is 15.29:1?
THAT seems awfully low!