AGCO Power (aka Sisu Diesel) only has two piston diameters and two stroke lengths in their entire engine line-up. When the combines needed more power than what their largest 6-cyl would provide they just added another cylinder to make seven. This fit into their current manufacturing system easier and less costly than what re-tooling for a larger piston would take. They also now manufacture a V-12 engine for the same reason.
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Today's Featured Article - Tractor Hydraulics - The Basics - by Curtis Von Fange. Hydraulics was one of the greatest inventions for helping man compound the work he can do. It’s amazing how a little floor jack can lift tons and tons of weight with just the flick of a handle. What’s even more amazing is that all the principals of hydraulic theory can be wrapped up in such a small package. This same package applies to any hydraulic system from the largest bulldozer to the oldest and smallest tractor. This short series will take a look at the basic layout of a simple hydraul
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