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Tread width on a B is adjustable from 64 to 92 inches. This is measured between the center line of the rims, so you'll have to deduct one half the tread width on each side, depending on the tire size. I'm not sure of rearend clearance, it will vary a little with tire size also. I would guess 24 to 28 inches. I'll measure my A sometime today and repost later. According to Guy Fay's Originality Guide, the B was never make with wide front, high clearance, nor hydraulics. I've seen tractors with homemade hydraulic systems that ranged from "should be patented" to "should go back to the junk pile it came from". There are lots of ways to do it, but please, for the sake of these vintage antiques, however you choose, DO IT RIGHT and don't cobble. All hydraulic systems need the same basic components: power source, pump, reservoir, control, cylinders, hoses/fittings. First, determine your lifting needs and design the system accordingly. Power can come from the pto, engine pulleys or an original pump unit from a Super A/C can be installed. Beware, the Super A/C had hardened timing gear to handle the increased load of the pump. All the parts you need (except maybe the reservoir) are available from any good farm supply store. With an investment of some time, alot of patience, and a few hundred dollars, you can build a FIRST CLASS system. By the way, I recently acquired a used electric power/pump unit which is very compact in size. I'm going to put it on my A for the mower deck. All I'll need to make it work is: wires to/from battery, relay, 3 position switch (power unit motor is reversible), reservior, cylinder, hoses/fittings. I'm sure this unit cost about $750 or more when new, but it is a very neat little unit. Good luck and keep us posted.
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