The Super AV is a different animal from an HV or an MV.
All IH did to the Super A is put 36" tires on it and call it a Super AV. The line of draft didn't change.
The HV and MV have drop boxes on the final drives, which widen the tractor out significantly. As you know, you need a very specific tread width to effectively pull a trailer plow.
The other problem is that those drop boxes put an awful lot of extra torque on the final drive housings. I don't know if they were designed to handle the maximum pull that the tractor is capable of.
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Today's Featured Article - The Cletrac General GG and the BF Avery A - A Bit of History - by Mike Ballash. This article is a summary of what I have gathered up from various sources on the Gletrac General GG and the B. F. Avery model A tractors. I am quite sure that most of it is accurate. The General GG was made by the Cleveland Tractor Company (Cletrac) of Cleveland, Ohio. Originally the company was called the Cleveland Motor Plow Company which began in 1912, then the Cleveland Tractor Company (1917) and finally Cletrac.
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