Talk:Pistonless rotary engine

message: Why does the article claim Mazda is the only Wankle producer?  Article text should probably be changed to "the only automotive engine manufacturer", not "only commercial manufacturer."
Why is the MYT engine listed, when no running prototype has ever been demonstrated?  There are videos of it running off compressed air in cheesy convention booths, or being turned by hand by an assistant.  They claim to have run one for 1000 hours of testing- where's the video of it running?  Where's a car with it installed, even just a prototype model?  It is a great disservice to Wikipedia readers to not qualify/disclaim ANY mention of the MYT engine when discussing it alongside engine technology that has been in widespread use for decades.  It implies credibility most would agree "MYT" doesn't deserve (yet- I'll shut up when they run an engine publicly on an independent dyno.)
What about the Mazda RX-series?  The RX-8, which came out in (I think) 2003 has a Wankel-type rotary engine.
:Please sign your posts on talk pages, user 192.35.35.36 (see also User talk:192.35.35.36), and consider creating a userid, it costs nothing and gives you a little more privacy.
:All the Mazda RX- models are Wankel powered. See for example Mazda RX-3, also Mazda Wankel engine. Andrewa 14:57, 26 October 2005 (UTC)
thread_title: Untitled

message: See http://www.dself.dsl.pipex.com/MUSEUM/POWER/rotaryIC/rotaryIC.htm and http://dmoz.org/Science/Technology/Energy/Devices/Internal_Combustion_Engines/Rotary/ for two excellent surveys, the first with diagrams. Andrewa 00:06, 25 November 2005 (UTC)
thread_title: and many, many others...

message: * Guys, I added the following statements to clarify the article.
:1. In the starting sentance: "A rotary engine is an.." changed to "A pistonless rotary engine is an..."
:2. Added this line to the starting paragraph:"An example of a pistonless rotary engine is the Wankel engine.
--Pavithran 23:03, 27 September 2006 (UTC)
thread_title:  Clarifying Statements 

message: A message to Van Helsing: Please do not remove entries on the R.A.C.E. engine without reasonable grounds. Your edit removed a stub that other people were interested in expanding, as well as a link to the Atkinson cycle which is an important advantage in some rotary engine designs. —Preceding unsigned comment added by Sowilo (talk • contribs) 
I fully agree with the above statement. Following some simple rules should help.
*The five pillars of Wikipedia
Sowilo 04:25, 15 December 2006 (UTC)
replies: text: Shall we keep this discussion on one place instead of four? --Van helsing 09:35, 15 December 2006 (UTC)
thread_title: Non helpful editing

message: Wankel Rotary Myths for Amateurs!? --90.186.119.176 21:53, 29 March 2007 (UTC)
replies: text: Quite so. What a mess. Andrewa 12:14, 19 May 2007 (UTC)
thread_title: What gives that here?

message: From http://www.trochilicengines.com/glossary/ : Trochilic Engines - A truly rotating piston, turbine by design that can  function as a  Stirling cycle, internal combustion, and high-pressure gas engine.  This highly efficient, clean, cost effective power source offers a solution to the worlds energy dilemma.
It appears that the Trochilic Engine is a new proprietry engine design. Two similarly-shaped interlocking rotary piston segments (see this image of one segment) rotate in a cylindrical chamber. Ports are used instead of valves, a la Wankel, and the two piston segments are controlled by planetary gearing so that their angular displacement one from the other varies as they spin, so that the space between them varies in volume. Ingenious.
But according to http://www.trochilicengines.com/faq they haven't actually built one, all they have so far are some computer simulations and of course the idea. Mind you, this same FAQ also predicts We expect to introduce internal combustion trial and demonstration units early 2006 so it may not be quite up to date. Andrewa 12:14, 19 May 2007 (UTC)
replies: text: Trochilic Engine redirects to Swing-piston engine. If this is correct, it is not a pistonless engine. Biscuittin (talk) 17:25, 5 February 2010 (UTC)
thread_title: Trochilic Engines

message: http://dmoz.org/Science/Technology/Energy/Devices/Internal_Combustion_Engines/Rotary/ gives a list of websites dedicated to proposed engine designs which includes the Trochilic. But all you need to appear on this list is an idea and a website. Several of them, by their own admission, have yet to be built, and there's no evidence that they ever will or even can be.
There are particularly interesting drawings of the Hula engine, see here and here, which appears to be a reinvention of the Sarich engine, and the Veselovsky which appears to be a variety of Wankel engine.
I'm skeptical as to whether any of them, including the Trochilic, should get a mention in this article. Andrewa 18:34, 19 May 2007 (UTC)
thread_title: Non-encyclopedic engines

message: Introduction now reads An example of a pistonless rotary engine is the Wankel engine. In fact the only commercially successful pistonless rotary engine to date is the Wankel. So shouldn't the introduction reflect this?
IMO the reason it doesn't is that some of our editors wish to promote other designs. Not a good reason. Andrewa 07:00, 20 May 2007 (UTC)
thread_title: Introduction is a bit tame

message: what kind of engine is this?
http://www.nevisengine.com/
--83.190.246.96 23:23, 19 June 2007 (UTC)
thread_title: NEVIS Engine

message: I recently came upon this article after  left a comment on my talk page about a new type of engine.  I am very concerned that this article gives undue weight to a number of theoretical engine designs.  I've seen plenty of theoretical engine designs come and go over the years, and the main thing that they have in common is a desire to sell shares in the company that is developing them.  Once such shares are sold and the original inventors have made their money, the whole proposal quietly collapses.  The only 2 engine types in this article that I am sure don't fit that category are the Wankel and Sarich.  --Athol Mullen 01:04, 19 September 2007 (UTC)
thread_title:  Promotion of share scam engines? 

message: An interesting link to a history of rotary engines, particularly rotary steam engines: http://www.dself.dsl.pipex.com/MUSEUM/POWER/rotaryengines/rotaryeng.htm
A link to many innovative engine designs of all sorts (some, perhaps as crackpot or impractical as the previous commentator laments):
http://peswiki.com/index.php/Directory:Engines  —Preceding unsigned comment added by 155.148.36.138 (talk) 15:38, 31 October 2007 (UTC)
thread_title:  Rotary Engine Links 

message: I elaborated on some of the other methods of measuring displacement of a Wankel rotary as it originally said something to the effect of "There are many ways of calculating displacement of a Wankel" but went on to only mention one (i.e. the Japanese/industry standard of measurement). Feel free to expand on or scrutinize. Should i also add this information to the Mazda Wankel page and the Wankel page as i believe any information to this effect is missing. I believe it is necessary for understanding the abnormal specific output numbers of the Wankel rotary's have in comparison to piston engines. - Li7in6
That is not the Japan standard, in fact this is the scientific standard. The rotor surface is not the combustion chamber surface and the comparsion is a little bit tricky. The combustion chamber is stationary in the location of the spark spark plug. Then need a Wankel engine per surface 3 x 360° = 1080° (3 rev) against 2 x 360° (2 rev) for all four Otto cycle. Only the absence of the empty stroke make difference. A four stroke reciprocating piston engine has a empty stroke (only every second rotation one working cycle) this has a Wankel engine not (every rotation one ignition). Therefor is the power density of a Wankel engine higher. Chamber volume x 2 is the equivalent displacement. All other is orginal research! --HDP (talk) 10:04, 11 March 2009 (UTC)
thread_title:  Comparisons 

message: Its own page gives links that puts it in development. --174.71.78.172 (talk) 08:55, 10 November 2011 (UTC)
thread_title:  Quasiturbine 

message: Anyone interested in this article, or in improving it, might find this revision useful. Andy Dingley (talk) 13:32, 12 November 2011 (UTC)
thread_title:  Large content deletion