Paul,

 Have you been following the Norton NRV500/700 motorcycle news.
They ran
 173mph at Bonneville in 2010 with this engine.



http://www.asphaltandrubber.com/racing/norton-racing-nrv588-179-mph-bonneville-salt-flats-bub-week-part-2/

 I can't seem to find any specs on the engine anywhere.

 Mark S.



http://en.wikipedia.org/wiki/Wankel_engine

This link may help. At the very bottom there is a little scoop
about the
Norton.
One chamber has 588 cc as the name implies. A larger 700 cc
chamber size
is being planned.

Rolf


Rolf,

Did you mean to state that the 588 was a 2-rotor?  According to the
link, the 588 is a 2-rotor.

"Norton has used a Wankel engine in several models including the F1, F1
Sports, RC588, RCW588, NRS588, most notably Steve Hislop riding to
various victories on Norton's F1 in the TT in 1992. *Norton now makes a
588cc twin-rotor model called the NRV588* and is in the process of
making a 700cc version called the NRV700."

Mark


Marc

The Norton Rotary has 588 cc displacement per chamber. That compares to
654 cc in the Mazda's, RX3 to RX8, they all have the same displacement
per chamber.

Norton started out with a single rotor and later build two rotor
versions of the same basic design with 588 cc chamber size. The new
NRV588 and NRV700 with 700 cc displacement per chamber are twin
versions, as per the company statements.

In other words the 588 is not far from the 654 Mazda is using. Perhaps
for smaller hp needs a Norton 588 single could be used. Likely that
would be simpler than reducing the Mazda to a single rotor version. Even
the twin might be suitable for aircraft use. Paul probably has more
insight into that.

Rolf