12 c

  2017.11.15

  Hello Paul,

  enclosed is an article about the RE for use in small aircraft. The
  engines are a bit expensive but nearly "ready to install".

  Production has started, so perhaps you like to start some kind of
  import business ... ;-)


  With kindest regards

  Franky / Frank Herfert

  That looks great. Now they need to get the two rotor certified for
  Light Sport category in the US and Australia. I will promote the heck
  out of it for no cost on the 750 member news letter. Finally somebody
  got smart !!!!!

  They are not too expensive. Actually lower cost than the Rotax 912
  and 914.


  http://www.geiger-motor.de/

  Finally!!!!!


  Paul Lamar




  I'm curious about the statement towards the end of the Geiger piece
  that they intend to release a product for the drone market that uses
   diesel/kerosene market presumably using compression-ignition. From
  some of your previous postings,  I believe you are very skeptical of
   c-i in rotary designs. Bob Ripley

  Well it will run but there is no fuel saving compared to gasoline.

  Paul Lamar


Hopefully we will have some insight into how they are doing the internal rotor cooling that they talk about. They say they’re working with Engiro. Perhaps the Woelfles can comment?

And Paul, there is a *huge* fuel saving compared to gasoline, if you have to fly barrels of gasoline in when everything else runs on JP4 or diesel…

David Josephson

You sound like you have read a book on the pacific war :-) Where are we fighting that gasoline is not readily available?

I hope they were not dumb enough to use charge cooling.

Paul Lamar


Hi Paul
    The engine to go for would be the Norton rotary. Their chief engineer is somewhat of a genius. He solved the charge cooling problem by WATER COOLING the E shaft. Their motor puts out 200HP. There is footage on u tube of it BOY does it GO.
    Chris. Hoskins

He (Norton)  did not event that.
That was done by Wankel.

On second reading of the Geiger PDF it sounds like they are oil cooling the rotor.

Paul Lamar

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