Bill gears

[johndeerered]

Anybody know if these have any gear reduction to them or is it 1to1. It looks like one gear may be bigger than the other but can’t really tell. This on a super m I think came from a cotton picker.

 

[Janicholson]

Anybody know if these have any gear reduction to them or is it 1to1. It looks like one gear may be bigger than the other but can’t really tell. This on a super m I think came from a cotton picker.

That housing is somewhat ambiguous. If the picker was made to drive the tractor backwards, and the transmission top has the shifter on the wrong side, there could be chains in the housing. If it drove backwards and the shifter is correct, it could have gears. If it drove forwards and the shifter is correct, the likely hood is chains. There were many versions of pickers made to fit them. ratio is probably 1:1. Jim

 

[used red MN]

By the Messicks parts diagrams it looks like it has a slightly reducing set of gears. So the transmission stays as a normal M/SM so it goes backwards in the forward gears. The MV/SMV has chains and sprockets so it drives as normal but has more clearance under the rear end case. In the link you will need to select the Chassis Category and Diagrams 316 and 319. Once you get to 316 you can use the “Next” arrow to go to 319.
Farmall Super M parts diagram

 

[Jim Becker]

The page that Used Red pointed us to says a gear with 44 teeth is driving one with 57 teeth. So that is your reduction 44:57 (By the way, 44 and 57 are relative primes so the reduction ratio can't be reduced.)