BTW Mario from Wankel Ag called me from Germany and he is setting up a
 subsidiary in Oregon. We may see some oil cooled rotor all aluminum
 2 rotor 100 HP engines in the near future.

 He has received some venture capital and is buying Hass NC tools as we
 speak
 for his factory in Germany.

 Paul Lamar

 That is some wonderful news!

 I was about to ask Marioa about this, but this clears the situation.
 There's indeed a gap here, between 13B derivatives and 45Hp 1-rotors.

 Cheers,
 Petri

 I am thinking of going to Germany a few days before Aero and visit
 Mario's new factory so I will upload a report and some more pictures
 then. Mario will be selling my book at Aero.

 Paul Lamar

Paul & Group -
an excellent opportunity to build in turbo compound power recovery at the
design stage , maybe with an axial - flow turbine.

--
Bryan In England

Yes and no. From a business point of view when capital is in short
supply and risk is high it would not be the right thing to do.

Paul Lamar


Paul, If it is not a propriatory issue for them, could you find out what
they will be using for the wear surface on the side housings and the rotor
housings.

george grimes

I'll try. It has been electrodeposited lipophilic nickel matrix silicon
carbide coating AKA Nikasil in the past by Wankel Gmbh. The really good
Nikasil supplier in Europe  namely Maule has refused to do it
on aircraft engines. Wankel went elsewhere and had problems.

The real trouble with coatings is there appears to be no
way of non destructive inspection or testing.

The only way is to take a lot of samples and test them to
destruction. That is what Mazda did ands det gun won.

One of the problems with Nikasil is it works well
on cylinders but not so good on complex shapes like trochoids
and flat surfaces.

http://kustom-kraft.com/NEWNIKASIL.html


"How do you know when your cylinder needs be re-Nikasiled?
Some times its not that easy to tell, but usually you can
tell by looking at the cylinder walls.  If you can see
scratches or chips that's a sure indication that it's time
to have your cylinder re-plated.  If you can't see any wear
or damage that doesn't necessarily mean your cylinder is in
good condition.  The inside of the cylinder has to be
exactly round (to with-in specs) to perform properly.  This
can only be accurately checked with a dial bore gauge."

"They can measure to with-in one ten thousandths of an inch.
The Nikasil plating that's on the walls of your cylinder is
only a few thousandths of an inch thick but is very hard.
It wears extremely well as long as everything is tight and
sanitary.  If you maintain your engine as the factory
recommends it will last for years.  However we all know how
easy it is to suck it full of water or dirt or maybe run it
low on oil or some other mistake you'll be needing our
service.  The Nikasil plating, or coating as its sometimes
refereed to, will have to be stripped and re-plated."



Paul Lamar