I have heard that vertical engine don't last as long because gravity pulling down on the pistons wears the cylinder and piston out faster. No, I'm not sure I believe this. Vertical is the better design for most ZTR's and I see the trend going in that direction. Does any one have hard evidence that one type is better than the other? Or is there no difference at all? Of course with a Horizontal engines you get into all kinds of problems like the mule drive.
Vertical engines vs horizontal engines
tacoma200
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I wonder how much a zeroturn would cost that had a hydro drive and blade system. I would think maybe 2000 more on what they want for them now.
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I had a 1985 Rx-7 back in the day, which I loved. But I admit that the Wankel has a large surface area combustion chamber which makes them thermally inefficient and are comparatively low on torque to gasoline, and certainly diesel. That being said, physical size and weight for a given HP is about unbeatable with Wankel. They'd make great line trimmers IMHO.
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I think that that vertical would last longer. Saying that, I have noticed horizontal engines cannot articlute well in hilly conditions. Oil sloshes everywhere, and ends up in the muffler thus creating a choo choo mower until the oil burns off. I can get on many different inclines and slopes with my z, but that dam troy bilt, you get on one well here comes the train... I think that it is somewhat of a poor design. But, since Kohler makes them I guess that are OK. But, I still go for a vertical over a horizontal any day.
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