STEVE - Problem with the IH-built plows is they were built to be used with larger tractors. They didn't make any 10" bottoms, smallest was 12" and they're rare, most were 14", and later 16" and larger were common. Too big for a CC. Although I've seen a CC 169 pulling an IH steel wheeled 16" one bottom plow and doing a good job with it.
The 10" Brinly is the most common plow, but there's some 12" versions around, and a few 8" too. I have an Ohio Steel Fabricators plow that Charlie mentions, and I think it's a stronger, heavier built plow than the Brinly, but some of the things on it are cheaper than the Brinly, namely the rolling coulter. The coulter spins on a carriage bolt with a greasable steel sleeve for the hub of the coulter, no bearing, but it works, also the depth control of the coulter is just another steel sleeve with a set screw, and the coulter is not adjustable side-to-side horizontally. Plus like all these garden tractor plows, the coulter is located too close to the plow bottom and restricts trash flow.
Some of the early Sears garden tractors had an odd-ball 3-pt hitch, much smaller than a Cat 0, and the plows they sold had a 6" bottom. Rule of thumb is a plow bottom plows best, pulls easier running at one-half it's width deep. To pull them deeper the draft or resistance to pull increases a lot. So a 6" wide plow runs best 3" deep, an 8" plow runs @ 4", a 10 inch works best around 5", 12" runs 6" deep, etc.
One of the last plows IH designed and sold was their #735 variable width plow with automatic spring trip or toggle-trip plow beams. The plow frame could be adjusted to take from 14" to 22 inch wide cuts per bollom while plowing. You could plow in rock or root infested ground and if or when a bottom, or two, or three tripped it would automatically reset and return to plowing without any stopping, backing up, or any actions needed from the operator. I rode in the cab of a 5288 at a Wisconsin IHCC plow day for a bit that was pulling a 6-bottom 735 plow and saw it trip three bottoms on something in the ground. The guy running the tractor didn't even know it had happened. That plow had enough trash clearance you could plow down full-size small square hay bales! The IH 700-series plows are still considered the best of the best plows ever made almost 30 yrs AFTER IH became C/IH.
