What gets folks confused is only looking at "horsepower" and not torque- horsepower is just a calculated number, based on torque (the actual force that moves the load) and RPM. "Horsepower", being a calculated number, can be manipulated- these days with the new "horsepower" quotas and regs, many engines can be easily made to fit under the 50hp threshold- just turn down the governor to a lower RPM. Same engine, torques just as much, but HP is less. We sold all of our I-R air compressors a couple years ago, and bought new under 50hp compliant rigs- they even say "49hp" on the back in big letters. Look at a D8- enormous torque, but very low RPM- so "horsepower" is only about 300- like that little small block Chebbie. Take the old 350 Cummins, and the derated 315- pretty much the same engine, but turned down to 1800 RPM- so "horsepower" calculates to less John Deere even has a section on their website that helps you derate their engines just by adjusting the RPM
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Today's Featured Article - An Old-Time Tractor Demonstration - by Kim Pratt. Sam was born in rural Kansas in 1926. His dad was a hard-working farmer and the children worked hard everyday to help ends meet. In the rural area he grew up in, the highlight of the week was Saturday when many people took a break from their work to go to town. It was on one such Saturday in the early 1940's when Sam was 16 years old that he ended up in Dennison, Kansas to watch a demonstration of a new tractor being put on by a local dealer. It was an Allis-Chalmers tractor dealership,
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