http://www.youtube.com/watch?v=9iiiDcFH-IM

    This is an English version of the excellent NSU
    video on the Principles of the Wankel engine.
    By far the best explanation of how the rotary works.
    Every person in the world needs to see this.
    It was translated by Rolf and narrated by my son James Paul.
    Thanks to Rolf Pfeiffer and Paul Jr.

    I got the video on a trip to Germany about 10 years
    ago and converted from PAL to NTSB. It was on my web site for
    about two years.
    --
    Paul Lamar ...No rotor no motor.

The video was excellent!

fwiw, I also noticed a video entitled "Destroying a Rotary" that came up
after your video which I found interesting and worth watching-
they  over-revved the motor continuously at 9000 rpm until failure.
They mentioned that one of the rotors was previously blown, and they
forgot to attach the radiator cap.

The motor ran great until all the water boiled out and it overheated,
even with one bad rotor.  The dumbo's seemed surprised that the exhaust
header glowed bright red and the muffler caught fire after running a
dead cylinder for 5 minutes at full throttle.  I was amazed at how
durable the "bad" motor proved to be.
Mike Parker


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Several people have run them till they melted.
Fin Lassen ran his to 10,000 or more RPM WOT with out oil until it seized.
He chiseled it apart, put new main and rotor bearings in it and flew
it for 600 hours or so until he crashed it in 50 foot trees at night on an
unlighted grass strip. Walked away. The guy lives a charmed life :)

Dave Lemon ran one on a race track
without coolant until the rotor housings melted. Just to see what would
happen. Took the expensive ceramic apex seals out and is still running
them in another race engine I think.

Dave Leonard froze the turbo motor on a sking trip to Mamouth. Split the rad
I think. Put stop leak in, took off and melted a rotor housing. Landed on the freeway
unhurt. I think he put new rotor housings in and maybe one or two other parts
and is still flying it I think. What other parts did you have to change Dave?