Slow 4 inline cylinder engines in early tractors were balanced by equal weight moving parts. The pistons on the ends move up, the pistons in the middle move down. The crank and engine are modestly balanced. As more speed and HP were asked of the designs, the harmonics and end to end balance issues were breaking cranks. To reduce breakage and improve operator comfort, 2 more main bearings, and counter weights have been built into the design These are inherently out of balance these vibrations need balance shafts to get them under control. This is not intended to be a high science definition. But I hope it makes sense. Jim
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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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