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Opposing Piston Engines

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We'll find out when people take a test ride in them. Until then, we can only guess whether or not people will buy them. They don't buy very many efficient diesels.
 
These engines will go into medium duty trucks. Not cars.
Too big of an engine to fit in a car.

I'm not sure if it will fit in a dually truck or not. But it might.
 
They work on military engines, which don't have to meet the EPA pollution standards that autos do. Diesel engines are more efficient, but are not popular on US cars. What kind of a ride and acceleration will opposing pistons produce? People won't buy cars that are unpleasant to ride in.

A tank or plane has a lot of extra weight to cushion vibration from an engine.
A tank,aircraft use turbines.
 
Some do. US machines are more advanced than some others. Some countries can only afford near stone age technology.
A jet ,will have a turbine,a helicopter will have a turbine ,unless it's really old.

Not many countries use prop aircraft in their airforce.
 
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