Meanwhile, I have a serious question about props. How difficult is
it to put a CS prop on a Wankle? I'm a bit puzzled about where one
would put the prop-governor -- oil or electric.

I've only just gotten some intro A&P books to read (because of the
orals for a Commercial Pilot's License).

And I too am thinking twin engine.

Regards, Steve Thompson

It is real hard or expensive to put a CS on a Wankel. Bottom line is
you don't need it. Set your pitch for cruise and due to the
exceptional power to weight ratio it will take off fine.

Paul Lamar


What about an electric adjustable? I believe it's ben haas  that has
the ford stroker engine in a maule an is using a cog tooth belt psru
and has an electric in flight adjustable on his that looks fairly
simple. He has a video on YouTube that shows his set up.
https://youtu.be/rCNnEgRkdXc

Rob Miller

Yes they will work. They are $10,000 and up. More than the engine
and gear box.

Paul Lamar


Lol ok that shot that in the butt, didnt realize they were that
expensive. I have been curious though not so much for the adjustable
 but more towards beta props for seaplane/amphibian  use .


Rob Miller

That you need.

Some of the guys on here built one years ago. I did some of the
design.

Paul Lamar

The BETA system on a PT6 is interactive with fuel, control/rpm, all
you need is a reversing prop, like the SeeBee came with standard,
for water use.

Steve Carlisle


That's what I was meaning sorry a out the confusion. Reversing prop
not beta, I always see them referenced as beta props when they are
talking about the sea/amphibious. Tentatively, not sure how large or
how any blades would be needed, but figured I would wait till I have
something to put it on before I worry about it.

Rob Millor


Beta mode is when we control the prop pitch manually and it is used at the ground idle and reverse pitch settings. Any power setting above ground idle the prop governor controls the RPM through the pitch. When we go down below flight idle to ground idle or reverse, we are controlling the pitch and throttle through linkages manually.

Did that help?

Kevin Alderman.



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