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


I'm more interested in reliability and cost of overhaul than a little extra fuel.
Todd Olson

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