gears in farmalls

[IH 1586]

I have both a Farmall H and Super H and I am trying to figure out the fastest gears possible and not exceeding 3.5 mph. Some of our pulls have a 1st gear only, except in a tractor that has a creeper gear can use 2nd. Some have an RPM limit of 2% or 10% over. Others use the 3.5 mph speed limit.

My question is, would a 1st gear from a W4 be faster than a Super H 1st gear? I believe the Super H had slightly faster gears than an H. Or would a 2nd gear from a creeper gear H be faster at 3.4mph? Thanks in advance.

 

[mshultz]

I'm pretty sure you could put the ring/pinion in your H from your w-4 you're going to move a bit faster in all gears if that would work for you. I'm thinkin the gears themselves might be the same, but not 100% sure.

 

[randy hall]

if you want to go faster use the w-4 ring and pinion in your h.

 

[D Slater]

You didn't say if you plan to run the 10% over with the gear you want. also tire size. H with stock RPM and tire size is close to 3.5 in second. H or SH with a W4 ring and pinion, 13.6 X 38 tires at 1650 RPM is at 3 MPH range. Standard W4 H and SH all have the same first gear ratio.

 

[IH 1586]

We are in the 10% over class. We run 13.6 tires on a 13 inch rim with about 50% tread, or less, if that helps. Thanks for the info.

I was told an allis chalmers wc ring and pinion works as well, is this true?

 

[Charles E. McNelly III]

Cant you change out the ring gear from a W-4? It would be faster then what your running now.
Charles

 

[D Slater]

If I figured right, using first gear and W4 R&P.
3.5 MPH would happen at 1981 RPM. Without a exact tire measurment I could be off a little. Figured a average tire with 4 tenths tread missing. Probably going to be a little slower with your tires.
Don't know about the AC parts.

 

[Anonymous-0]

3.5 mph at 1981 rpm! Im allowed 20% over and 4 mph with triple digit HP! Chad

 

[Anonymous-0]

1586, FIND A W4 ring and pinion, best to find an entire parts tractor. The H-SH and the W4 rear bearing assembly are different, they will interchange! Take it from the W4 and put it in the SH.

Your looking at some work to do this, so be best to have access to some extra parts, bearings and such.

Super H's 2-4th gear are faster, lows are still the same in all H-W4.

Now, go get another 1500# of weight and run in the heavier classes in low gear!!

4500-6250# 3-3.5mph,,would be an excellent setup for your Super H,, if,, its got some guts! JMHO,, if its got power, DO THIS ASAP,, start picking off M's one by one???

I am gonna take my weld on hubs axles off, "go back to something a little more adjustable",,, soon,,,, ChadS