Talk:Twingle engine

This article is really more than a stub, but I think it needs some diagrams before it can be seen as complete.

There are diagrams at two of the external links, but I'm not convinced either is accurate (quite apart from copyright). The one of the later engine shows the inlet and exhaust ports on the same side of the cylinder, and both operated by the same piston, which is contradicted by photos at one of the other sites which show a conventional layout with two exhaust pipes emerging from the front of the cylinder block and the inlet manifold at the rear. I think this diagram is schematic only and should say this, and possibly inaccurate. Also the proportions of the cylinders and con rods are wrong IMO. The one of the earlier engine does not show the transfer port clearly at all. Andrewa 09:23, 12 Nov 2004 (UTC)

What about 4 cycle twins that fire both cylinders at once?

Many engines have been changed so that both cylinders fire at the same time. This is my experience with the use of the term, "twingle" (a twin that fires as a single). Harley Davidsons with their 45 degree V twin setup were said to have been "twingled" when they were set to fire 45 degrees apart instead of the normal 315/405 degree separation. Nowadays, I believe the term "big bang" is popular for that setup because it can include more cylinders firing at the same time or very close together.

I think there should either be a disambiguation page or this definition should be added to this page. --Mud4t 22:19, 27 April 2006 (UTC)

If the phrase "Split Single" were used in the header to the article it would avoid the possible confusion with "Big bang" twin cylinder four-stroke motors. Incidentally, I own a Puch split single motorcycle.

DKW racing engine of the 1930s

I remember reading about a DKW racing motorcycle engine with three cylinders but one combustion chamber. In essence, the two outside cylinders were mounted vertically and formed a Twingle or split-single unit, while the middle cylinder was mounted horizontally (facing forward in the frame), had a larger bore and a smaller stroke, and was essentially a supercharger for the other cylinders.

Does anyone have any documentation for this engine? I think the motorcycles it powered were successful racers at the time. Respectfully, SamBlob (talk) 14:42, 4 April 2009 (UTC)