This is from "Stratified Charge Rotary Engine Critical Technology
    Ennoblement Volume I" Page 253

    It is a chart comparing a 400 HP John Deere rotary with a PT6.
    The PT6 weighs close to maybe 600 to 900 pounds.
    Cost well over $100,000 dollars.
    Fuel burn probably .6.

    Fuel burn on the rotary .5.  17% better.

    Rotary weight with gear box 250 pounds.
    Add another 30 pounds for the cooling system.

    I put in the TTC 2 rotor engine.
    Imagine a Mazda 3 rotor with the same boost. :-)

    Of course we are running Methanol so subtract a couple of hundred
    to run on gasoline.

    Paul Lamar

    I would say well over $100,000. One was bought by my friend for his
    Turbo Beaver, 4 years ago, a unit overhauled, which he bought
    at auction for $230,000CDN.

    Steve Carlisle

    Wow!!!

    It never seizes to amaze me how dumb people are. Does it take a degree
    in physics or mechanical engineering to see the potential of
    the Wankel? Do they fully comprehend the importance of power
    to weight ratio? Must the skies be full of Wankel powered airplanes
    before they realize that they really work?

    Are they hung up on 5 to 10% worse fuel burn?
    That could go away with one additional invention.


    Paul Lamar

Maybe it's the certification issue?

Steve Carlisle

Austro engines have a 100 HP 2 rotor certified.
I don't think the owner of Austro engines really understands the rotary :-)
He has been hung up on diesel aircraft engines :-)

Paul Lamar

Is the certified engine 50hp or 100 hp?

GAO, Gordon

They have both. A one rotor and a two rotor. They have sold over 500 one
rotors to Alexander Schleicher  for use in motor gliders.chlecetre

Paul Lamar



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