I seem to remember that 22" was the sized recommended for tractors like F-20, 10-20 and H. My father had a thresher that we operated with a 10-20. The engines on these early tractors were BIG (about 280 cubic inches!!), but they didn't run very fast (1000 rpm, full-load governed speed). There wasn't much horsepower, but there was a lot of torque. That is why they would handle a brief overload without choking up the thresher. The H, on the other hand, had only 152 cubic inches. It gets its horsepower from speed. If it is pulled down below its governed full-load speed, it is easy to overload it and even stall it. It is a very snappy engine and does a great job as long as it is allowed to run up to speed. I can see how it would be easy to choke up a thresher with this type of engine running it.
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Today's Featured Article - Women and Tractors - Tractor Engine Repair - by Teri Burkholder. One of the great things about working on a tractor engine with your other half is that you know what he is thinking of at all times and can anticipate his every move and his next thought of what he will do. With Ben, anyway, I can tell! He'll be busy working and I’m handing him tools and he says, "give me that..." and I’ve already got it in his hand or "hand me that....."and I’ve got the portable light right where he needed it placed to see. "Run in the house and get me a...."as I open th
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