Farmall H Adjustable Wheel base

redblood

Member
Hi Fellas! I just bought a Farmall H. It has an Adjustable Wheelbase front axle. In short position it is a 90" in long it is 100" wheelbase.I am curius to what purpose you need to move the axle? If its longer, would take 40 acres to turn it around. So why?
 
They were adjustable so you could drive down different row widths and not drive over crops. I like them as wide as practical for stability.
 
Its adjustable fore and aft, not width. The width i understand for row widths, 28, 30, 32, 34 etc. This is forward and backwards.. That is what has me stumped....
 
We need a picture. The original IH wide front were setup for the tierods to be in front of the axle. THe radius arms on the top of the spindles were splayed outward (Ackerman geometry), later IH and probably all after market were behind the axle, with the radius arms pointing to the center of the differential. (again it is Ackerman geometry)
Show us what you have. Jim
 
What allan said. After the newer type wide fronts came out in 1954, IH still offered the adjustable wheel base front end as a attachment for SMTA tractors to use with beet equipment.
 
I have a '45 M with the wheels in the long position.It needs to be there for the wheels to clear the cultivator.Also is a pic of SuperM with a mounted sugarbeet harvestor
a143980.jpg

a143981.jpg
 
Thanks deltared!! That explains it for me. Makes sense. I was curious as to why, now i know. Yes that is exactly the front axle on my H.

Anybody by chance have a center steering arm they want to sell? Mine is bent down. A little nervous about heating and bending it back up. Looks to be made of cast.... [/img]
 
The adjustable wheel base was so that you could use the extended wheel base setup if you wanted the row crop cultivators mounted, the axle was far enough forward to clear the standard Farmall M cultivators. The rear (shorter) wheel base setting gave about the same wheel base as the narrow front Farmall M so more maneuverable but the axles would interfere with trying to mount forward cultivators.
 

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