"Steel wheels waste enormous amounts of engine power--this is why the early tractors always listed the rated drawbar horsepower as about 1/2 belt power (10-20, 15-30, and so on)."
I have wondered about the HP ratings of the early tractors. But, with my dad's H, we used skeleton steel for cultivation, and rubber for tillage. If we needed to do tillage and cultivate, we did the tillage with steel rather than constantly changing the wheels. With the same load, I never noticed any difference. Theoretically the 11-38 rubber tires should pull more than the narrow steel, but I never noticed it. Same implement, same gear with both types of wheel.
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Today's Featured Article - Allis Chalmers ED40 - by Anthony West. Allis Chalmers as a tractor manufacturer in its own riht is but a memory. However the number of AC tractors still in existence today as either restored or unrestored examples is a testament to the quality of their products. This in itself is always apparent here in the U.K when attempting a purchase, as no matter what the model or condition the price will always be strong.
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1964 I-H 140 tractor with cultivators and sidedresser. Starts and runs good. Asking 2650. CALL RON AT 502-319-1952
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