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/

Yes, that was the group.  They sure had what seemed to be a good
thing coming along. I might not ever understand why a motor with so
much potential is being tested on something pretty much forgotten as
far as aircraft design.  Then again, if you want to be in the
business and don't want to get tied up in legal stuff, why wouldn't
you test on your OWN aircraft... period.

But enough of that. More below.

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
>


With that in mind, and this is what I need, a 180-200 hp motor,
reliable, weight no more than a 360 and so it goes.  Were do I put my
search time? Keep in mind, I can make any part to make it fit, but I
don't want to re-invent the wheel on the motor or re-drive...

Scott


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


With aluminum end housings we can beat that weight by 100
pounds and give you 50 more HP.
You can buy a gear box from Tracy Crook for about $3000.
I would use a couple of carbs on the P-port Teflon slide throttle
engine from Ellison. That is going to save you tons of time fooling
around with mysterious EFI.

Paul Lamar