Hello. Have you ever seen this company?
  http://www.wankelsupertec.de/en_index.html

  They make some light weight engines. Maybe the 2 rotor 350 engine is
  a good choice  for aircraft application.

  Regards Kenneth Martinsen

  Yes I spoke with  them at Aero. However I have never seen one run.

  Paul Lamar


  Those are some very good looking engines!

  Dan Gorsline

  IMHO There is a major flaw. The rotor bearing needs to be much wider
  for this reason. See the attached JPG. This was discovered over a 100
   years ago. It amazes me engine designer still make this mistake.

  This limits the RPM and manifold pressure both of which create HP.

  It is from Taylors books on engine design. This is the bible of
  engine design and every engine designer should read it.

  http://www.rotaryeng.net/books10.html

  The Internal Combustion Engine in Theory and Practice.

  Volume 1: Thermodynamics, Fluid Flow, Performance. Second Edition
  Revised.

  Volume 2: Combustion, Fuels, Materials, Design. Revised. Charles
  Fayette Taylor. The MIT Press Cambridge Massachusetts, and London
  England.

  BTW Dan, please add your last name to your messages.  Out of the 900
   people on here we have many Dan's.

  Paul Lamar



  Hi Paul, Yes, those plain bearings certainly appear to be too narrow.
  Higher oil pressure may overcome lack of load bearing capacity
  somewhat (possibly). I did not notice any O rings, are they in the
  side plates ? does this engine rotate in the opposite direction ?
  Chris Hoskins.

  Most of that is just mock ups. It has been around for at least five
  years and I have never heard of one running.

  Paul Lamar




Hello

I worked for three years at WST as product manager, the engines runs really!
But it is hard to buy one, they love their work to much ;-) Most of the
handmade samples are dumped by "secret-skunk-works-customers"....

One test-series is now out for trials as APU-preheater-generaterset for
diesel-railway-engines.
http://www.lr-online.de/storage/scl/xmliosimport/wir/3380184_m1t1w500q75v479
64_201504281435-GHA5GIK42.1-ORG.jpg?version=1430961254

http://www.lr-online.de/nachrichten/wirtschaft/Cottbuser-Wankel-auf-Diesello
ks;art1067,5016240

It is the small block-wankel, turbo carged and as diesel. Hopefully this
lil-jewel breaks out the lab and will be manufactured in big numbers.
Would be the long eagerly awaited kerosene two rotor-LSA engine.

Claude


Unless some one with no axe to grind can buy one and test it the claims will
remain just claims.

I have my doubts.

Also I am not waiting for a carcinogenic diesel engine to fly behind :-)

Paul Lamar

Hi Paul,
    You are right with your paranoia about diesel engines, most people
are unaware of the nasty soot particulates that are produced in large
amounts by compression ignition. It is incomplete combustion and cannot be
avoided. When I did a diver medics course several years ago we did an
autopsy on a 62 year old woman who had suddenly died. When we took her lungs
out they were black ! the pathologist (who had seen this before) said it was
soot particulates from the diesel powered buses that ran past her house
every day. He said that was the probable cause of death.
    Chris  Hoskins.

The air throttle on Diesels engines  runs wide open all the time. In effect there is no
air throttle. Consequently the diesel engine runs over a wide mixture ratio.
In order to cause a diesel engine to accelerate one must put more fuel
in. This richen's the mixture and sometimes causes it to run over the smoke limit.

The World Health Organization has this to say about it.

":A group of experts from the World Health Organization (WHO) has classified diesel engine exhaust <http://www.cancer.org/Cancer/CancerCauses/OtherCarcinogens/Pollution/diesel-exhaust> as a carcinogen – a substance that causes cancer. The International Agency for Research on Cancer (IARC), which is part of the WHO, based its decision on what it calls “sufficient evidence” that exposure to diesel exhaust causes lung cancer <http://www.cancer.org/Cancer/LungCancer-Non-SmallCell/index> and “limited evidence” that it increases the risk of bladder cancer <http://www.cancer.org/Cancer/BladderCancer/index>. The new classification moves diesel fuel from the category of “probably carcinogenic” to “carcinogenic.”"

Paul Lamar



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