There is literature that has been found about some dual setups for the H and M and I believe a few examples where there were skinny little rims and adapter brackets that would bolt to the center casting and used like 6 or 7x44" tires from what was listed. There were similar setups for the F-20 and F-12/F-14 that used 7x40" tires. So yes there were technically factory narrow dual rubber setups but they are now extremely rare and expensive if you do find them and cost you north of $5000 worth of specialty tires.

People have for years put duals on H's and M's for more traction simply by getting another set of rims/tires and cast centers. Flip the original center so it is "dished in" towards the tractor and slide in on the axle then put on the second set of centers "dished out" near the end of the axle and you have a set of duals that is actually easy to find parts and tires for but I don't think would have been offered as factory.

my dad bought an old H,,,tires were pretty rotten and it didnt run,,,my brother towed it home behind his jeep,,,,,Dad drove the tractor,,,,he said it was a hell of a ride,,,

but anyway,,,we got her running and you could see where dad was at anytime he was on it,,,,it was a smoking ol gal,,,,big smoke,,,,you sure didnt have to worry about skeeters

that winter i put an over bore kit in it for Dad,,maybe made it a super H or maybe a little better,,,freshed up the bearings while Dad put the paint to her,,, with new decals,,she looked like she just left the factory,,for the rear tires he found a set off an M,,i think he said,,,i know they were loaded and WAY bigger than factory or the ones we took off,,,some kind of a deal he made,,, unbolted the clamp slid old H set off slid on M set,,,,IIRC,,,we might have just changed the wheel and tire,,,,been a loooong time ago 

ol gal pulled pretty good,,,,Dad used it for skidding logs,,,

i can remember that old tractor,,,,when the load got really big would give a little shutter,,,,you could feel it in the whole tractor,,,,but once she got a moving that went away,,,like you drove through it or something,,,,you could tell the tractor wasnt ment to be doing this stuff,,,this way,,,,lol

as for duals,,,,i dont know if they were ever offered,,,or even if you would have enough tractor or clutch,,,,surely not the power

my daughter has Dads ol super 

Dads been gone for 8 years,,,,what i would give to set down and have a cup of coffe with him ,,,,1 more time

ocharry

I do not have them on an H yet.  mcm

Click on above.

YES!

 

Much the same experience if you have a FWA tractor and don't engage it in loose dirt.  Everything feels bogged down and slow, and then you have that "OH YEAH" moment realizing you forgot to turn it on.  It's like picking up 1/2 a gear, RPMs come up.

A  friend of mine has  duals on  his M.  He took a second set of cast centers and worked things out with spacing so that each wheel on the rear has its own cast center clamped to the main axle.

Ken

Duals for tractors were originally developed in the mid 30's to aid in the cultivation of listed crops planted between ridges.  They used 40" or 44" skinny rims and tires and were available for all popular row crop tractors of the era.  These are the "factory" duals that were available for the Farmall H/M's.