Talk:Longitudinal engine

In-line engine

 * An engine similarly mounted along the frame of a motorcycle is called an in-line engine.

This is incorrect; inline engines refer to cylinder arrangement, car or motorcycle, and the orientation is called longitudinal, car or motorcycle. In the transverse engine article, there are three citations specifically showing motorcycle engine orientations being describe using these same terms. The Motorcycle Encyclopedia entry from the first citation must be an error and the second citation is simply being misread, as it refers to the S7's cylinder configuration.

Even if someone, somewhere, at some time, referred to longitudinal motorcycle engines as inline, this isn't the convention used among motorcyclists and would cause confusion with the term used for cylinder arrangement; imagine a Ducati being referred to as an "inline V twin." I'm deleting the above quoted line. CrinklyCrunk (talk) 16:54, 30 May 2015 (UTC)

Unconventional engines
Are rotary Wankel & radial engines not usually aligned longitudinally? Daimler Ben (talk) 06:49, 1 November 2017 (UTC)
 * If you base that on their crankshaft [sic] orientation, then yes. Radials are very rare though (except in US tanks of WWII) and there are nearly as many with the crankshaft either vertical, or a rotary radial engine mounted in a motorbike wheel. Andy Dingley (talk) 10:35, 1 November 2017 (UTC)