Talk:Straight-twin engine

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Text and/or other creative content from this version of User:Ebikeguy/Inline-twin engine was copied or moved into Straight-two engine with this edit on 19:30, 13 July 2012. The former page's history now serves to provide attribution for that content in the latter page, and it must not be deleted as long as the latter page exists.

Text and/or other creative content from this version of Straight-two engine was copied or moved into U engine with this edit on 19:39, 19 July 2012. The former page's history now serves to provide attribution for that content in the latter page, and it must not be deleted as long as the latter page exists.

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Terminology

Latest comment: 2 years ago2 comments1 person in discussion

(This post kind-of follows the "Parallel Twin" post above).

I think the paragraph (in italics, below), from the Terminology section is wrong. There is no difference between a parallel twin and a vertical twin. It is NOT a question of their crankshaft angles. One simply describes an engine as a 360°,180°, 270° parallel-twin (or vertical twin).

"In the United Kingdom, the term "parallel-twin" is traditionally used for engines with a crankshaft angle of 360 degrees, since the two pistons are in the same direction (i.e. parallel to each other).[citation needed] "Vertical-twin" was used to describe engines with a crankshaft angle of 180 degrees,[citation needed] which causes the pistons to travel in opposite directions. The terms "straight-twin" and "inline-twin" were used more generically for any crankshaft angle." Arrivisto (talk) 12:46, 19 May 2023 (UTC)Reply

Arrivisto (talk) 12:46, 19 May 2023 (UTC)Reply

Ferrari I-2

Latest comment: 8 months ago1 comment1 person in discussion

Ferrari’s Aurelio Lampredi designed a 2.5 litre inline two-cylinder engine for the mid-1950s Formula One regulations, ostensibly because it would have more torque for slow and twisty circuits like Monaco. Apparently it broke on the test rig and was never actually run in a car. The Hans Tanner/Doug Nye history of Ferrari has more details but it’s at home and I'm not. Mr Larrington (talk) 15:21, 25 December 2024 (UTC)Reply