Paul,
I listened to you at the Rad Cam booth.  They were making all kinds of
promises about there new motor, and to me, it looked good. But now they
are ?  I don't hear a thing about them.   They were saying they almost
had this and almost had that?  I am in need of 170-180 HP and willing to
do most anything but full blown experiment with motor.

We have full machine shop, 25 years cad background and so on. I build
the Patrols.  Perhaps the strongest-most efficient super-cub style
aircraft on the market. HP for HP we get 40% more cruise speed... and
exactly the same landing speed.  A great plane, in search of a great
motor.  I was at one time thinking the Rad Cam might have been it.

Any others out there that are able to deliver on their promise's?

the Rad Cam I mentioned might not have been the right name.   What I meant was Rotaryae by Nathan Oldham  the site is not providing info...so am guessing is defunct?

Scott Weinberg
Iron Design L.L.C.
http://www.irondesign-airparts.com/Tailwheels.htm

I think you are talking about the Rotamax Wankel engine. Apparently they are now
dormant and not building engines or selling engines. The factory is probably still there along with the tooling but they had an accident with one of their engines mounted in a Sadler Vampire. According to the owner Eric Barger they are waiting for the final NTSB report which could take a long time. It may be a legal issue of some sort.

Here is the web site.

http://www.rotamax.net/

The engine has some potential but some minor changes need to be made.
In the mean time one rotor Mazda engines can be made with about
the same power to weight ratio.

Richard Sohn has been working on a one rotor engine for quite a few years.
I don't think he has a web site yet but here is his email add.
RES12@fairpoint.net

Here are some recent pictures of his Mazda based engine.
Others have built Mazda one rotor engines as well. Richard
is using aluminum end housings of his own design to reduce the weight.

Mazda one rotors are kind of easy to build as most use a cut down
Mazda two rotor shaft. Stock front and rear end housing will work.
Expensive aluminum end housings are available from Racing Beat.
http://www.racingbeat.com/

If you need 180 HP a Mazda two rotor is the ticket. Dozens are flying.
Its loafing at 180 HP. You can build a super super cub with 250 HP
normally aspirated. Same engine weight.

The first Mazda rotary powered plane was  built in 1973.

Paul Lamar

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"NTSB Identification: CHI08LA274
Accident occurred Wednesday, September 03, 2008 in Findlay, OH
Aircraft: Sadler Vampire, registration: N333SV
Injuries: 1 Minor."

"This is preliminary information, subject to change, and may contain errors. Any errors in this report will be corrected when the final report has been completed."

"On September 3, 2008, at 1257 eastern daylight time, a Sadler Vampire, N333SV, received substantial damage on impact with terrain during a forced landing. The airplane experienced a total loss of engine power after takeoff from Findlay Airport, Findlay, Ohio. Visual meteorological conditions prevailed at the time of the accident. The 14 CFR Part 91 test flight was not operating on a flight plan. The pilot sustained minor injuries. The local flight was originating at the time of the accident."