Allis chalmers c vs b

What are the differences between the b allis and the c allis i thought the only difference was the b had a wide front end and the c had a narrow front end correct me if i am wrong.
 
There are a few other things different. The B rear end is narrower then the C. If I remember right the transmissions are different. Not sure if that cover all of them or not. By the way one could order a C with a wide front end
 
C is something like 15" wider. B was always a wide front designed for 1 row work. A C could be had wide or narrow front and was designed for 2 row work. Engine and tranny is the same.
AaronSEIA
 
The B is narrower because it"s a one row cultivating tractor, the C is a two row. B front ends are all arched, to allow higher crop clearance under the middle of the tractor (one row). Both transmissions are 3 speed, road gear about 7 mph. C wide front is a horizontal setup, similar to a CA.
 
The B could be had with an adjustable wide front. Early one was similar to the arch solid front axle and after 1940 it looks a lot like the C wide front but does not share any major components.
AaronSEIA
 
The early ones were. Check the parts book. Not identical to the non adjustable arch, but not straight like the later ones either.
AaronSEIA
 
Some other differences were:

Steering gears, B uses a drag link that runs down from gear, C uses a a drag link that runs up from gear.

Radiator support, B uses heavy sheet steel support while C has a Cast support with internal steering gears

Nose - C sheet metal for radiator shroud is cut out to accommodate the steering arm.

Fender/Wheel Guards - The B fenders are more clam-shelled like the CA, the C fenders are more upright with strengthening ribs allowing a couple of inches more clearance to pull the rims in when reversed.

Rear hubs - C uses a heavy cast lug nut connections while the B uses a less conical single bolt wheel, dropped axles are different because of this. If I recall the rims are interchangeable if you also keep the eccentric bodies, but the C normally came with a wider rim on the rear, I have them and can measure if necessary. 10 inches wide sticks out in my mind for the C. B probably could get those later on, but early Bs had narrow rims, I also have a set or two of those I could measure.

May be some other things I'm forgetting, but people mentioned the major differences in the rear and front end, totally different finals though a few minor parts interchange and the tail is the same (PTO and Hydraulics). As I start listing things out, it occurs to me that they're as different as they are the same. Similarities that come to mind are hood, front rims, tank and support, tool box (variants), torque tube and shaft, transmission, pto, seat, engine and electrics, instrument box and hydraulic pump / rams.

These are really lousy pictures (picture of a picture) but they show some of those differences.

AC B

mvphoto11619.jpg


AC C (note finals, fenders, drag link and gear)

mvphoto11620.jpg
 
I have my grandfather's B and it has C style rear wheels and a non-adjustable arched front axle. I think it is a 1951 model. It is the first tractor I ever drove, pulling a hay trailer. I was too small to reach the clutch. I think those rear wheels were an option.

Garry
 
That's a very cool B, notice it has the bullet light, must have been at or after the time the CA came out. The only thing missing was the B version of the Snap Coupler. I bet those are very rare, would love to have one.
 
YT,

You're probably right about the age of that particular tractor but I looked in the "Bible" (Norn Swinford's book) and found out that the adjustable wide front and reversible rear wheels was first offered in 1945. The snap-coupler option for the B came out not long after the CA so that it could use implements made for the CA. I think one of the best of those would have been the front/rear mounted cultivators to replace those original tough to put-on and take-off one row cultivators.
My Dad bought a B new in 1941 (the year I was born) and I saw lots of Bs, Cs and CAs in my youth but I never saw that style adjustable front end B. Apparently rare in my neck of the woods if not everywhere.
I would love to have one of those myself although I have no real need for one. LOL
 

No....the C had the same tranny as the B....you are probably thinking of the newer CA which not only had 4 speeds but also had a hand clutch which gave it a makeshift live PTO.
 

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