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Difference between revisions of "Boxer twin"
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[[Image:Opposed-cylinders-500.jpg|thumb|A 1967 [[BMW R50|BMW R50/2]] longitudinally mounted flat-twin engine, with tank removed. Note that the cylinders are not truly in line but displaced by the width of one [[crank pin]] and one crank-shaft web.]] | [[Image:Opposed-cylinders-500.jpg|thumb|A 1967 [[BMW R50|BMW R50/2]] longitudinally mounted flat-twin engine, with tank removed. Note that the cylinders are not truly in line but displaced by the width of one [[crank pin]] and one crank-shaft web.]] | ||
A horizontally opposed engine configuration with the two pistons opposing each other, commonly found on [[BMW]] twin-cylinder [[motorcycles]]. The term comes from the resemblance of fists coming towards each other. Also known as a pancake engine. | |||
[[Category:Engine configurations]] | [[Category:Engine configurations]] | ||