Talk:Flat-four engine

message: There is another vehicle i found on the web called "Tatra" czech-made voehicle, late 1920's. Possibly the oldest flat four known.
~soob792~ 16:55, 20 September 2006 (UTC)

message: The H-4 engine is so closely related to the flat four it makes perfect sense to include reference like this to it:
:"Though not a true flat-4, a similar engine was made in which one pair of cylinders was mounted above the others — an H-4 pattern. Here are two of these motorcycles:
:: "A small number of shaft drive opposed four 1000cc Brough Superior Golden Dreams with stacked cylinders were built in Nottingham, England in 1938 and 1939.
:: "The first Wooler opposed four, of 1949, had stacked cylinders in the H-4 pattern. In 1955, Wooler changed to a flat four."
However, "SamBlob" has deleted the references twice.  Apparently he or she doesn't like it and will continue to delete it if it is reinserted. Fine.  He or she is wrong-headed on this matter.  So who am I to get into a editorial war with him or her?  R69S (talk) 21:03, 30 April 2009 (UTC)
thread_title:  H4 engines 

message: "Flat-4" is too limiting because it leaves out a closely related layout, the H-4, and attempts to refer to this design have been repeatedly deleted.  Opposed four engines would be a better name for this article. Flat-4 should be merged into opposed four engines. R69S (talk) 22:51, 3 May 2009 (UTC)
replies: text: Opposed four engines is a bad title in English. It would be better if you discuss the options before creating other aritcles. - BillCJ (talk) 23:01, 3 May 2009 (UTC)
replies: text:  What would you suggest?  It would be easily changed.  R69S (talk) 00:31, 4 May 2009 (UTC)
replies: text:  The H-4 is an example of an H engine and should go under that category. An H engine can be viewed as a pair of flat engines geared together, so the H-4 is really a pair of flat-twins with a common output. The manufacturer probably arrived at the design by gearing a couple of off-the-shelf flat-twins together, since it is otherwise a very complicated and expensive way to build a four-cylinder engine. The phrase opposed four can be taken to mean it is an opposed piston engine, which is an entirely different breed of engine. The flat-4 is one of a series including the flat-twin, flat-6, flat-8... all the way up to the flat-16.  So, I think flat-4 is the best choice for this article.RockyMtnGuy (talk) 16:20, 5 May 2009 (UTC)
thread_title:  Change the name 

message: Hello! This is a note to let the editors of this article know that :File:ULPower UL260i.jpg will be appearing as picture of the day on June 18, 2014. You can view and edit the POTD blurb at Template:POTD/2014-06-18. If this article needs any attention or maintenance, it would be preferable if that could be done before its appearance on the Main Page. Thanks! — Crisco 1492 (talk) 00:26, 2 June 2014 (UTC)
thread_title:  [[:File:ULPower UL260i.jpg]]

message: Nice animated diagram. However, the firing order of the quintessential flat-four, the VW air-cooled engine, is 1-4-3-2, not 1-2-3-4. Sca (talk) 14:57, 20 March 2016 (UTC)
thread_title: Firing order

message: This article contains much good information, but various sections lack citations (some more than others). From reading it I get the impression that the article seems to contain original research (in part at least) 46.69.29.80 (talk) 18:34, 23 December 2023 (UTC)
thread_title:  Possible Original Research ?