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 - Hydraulics - Cylinder Anatomy - by Curtis von Fange. Let’s make one more addition to our series on hydraulics. I’ve noticed a few questions in the comment section that could pertain to hydraulic cylinders so I thought we could take a short look at this real workhorse of the circuit. Cylinders are the reason for the hydraulic circuit. They take the fluid power delivered from the pump and magically change it into mechanical power. There are many types of cylinders that one might run across on a farm scenario. Each one could take a chapter in
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