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

   Rolf,

   The RX2 and RX3 engines were 1146 or 573 per chamber. The RX4, Cosmo
   and later
   engines; 654 per chamber. Early RX7's had 12A and then 13B engines.
   The 12A is
   closer to the Norton. What is the rotor radius, eccentricity, "a" and
   rotor
   width? Almost all the Mazda engines shared dimensions except the
   rotor width.

   Dale Davies

   Norton bike rotaries are 588 and 700 ccm total displacement, not per
   chamber. All including early air-cooled versions were 2-rotor. The new
   motor would be very pricey alone, even if it does become available, as
   production numbers will be very small for now. Being most motorcycles
   are of unit construction, that is motor, primary drive, and
     transmission
   sharing same castings splitting components may be a problem. I know
   where there sits a '90's F-1 sport bike version, but plastic would have
   to come off to find out. I see nothing but problems. Mazda motors are
   dime-a-dozen respectively.

   Sincerely,

   Al Koivisto

     The March 2011 issue of "Motorcyclist" magazine has a short
   article and
     pictures of 13B powered motorcycle built by one Rodney Aguiar. Mostly
     BMW R1100Gs with Suzuki front suspension. 250 Hp makes it a apparent
     handful. More info at <http://www.propulsionlab.com
   <http://www.propulsionlab.com/>
     <http://www.propulsionlab.com/> plus other off-the-wall creations.

     Al Koivisto


     Here is one seen at Seven Stock in 2006.

     Paul Lamar


   Paul, Makes me wonder why aircraft cowls are so stuffed and this
   install looks so uncomplicated.

   george

   Notice there is no cooling system to speak of :)

   Paul Lamar
   -- The Rotary Engine NewsLetter. Powered by Linux.
   ACRE NL web site. http://www.rotaryeng.net <http://www.rotaryeng.net/>
   Youtube key word PaulLamar2
   Copyright 1998-2011 All world wide rights reserved.






-----Original Message-----
From: Rotary Engine <rotaryeng@earthlink.net>
To: AAA Put this in the To box <rotaryeng@earthlink.net>
Sent: Fri, 25 Feb 2011 17:35
Subject: : Norton Rotary Motorcycle


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

Rolf,

The RX2 and RX3 engines were 1146 or 573 per chamber. The RX4, Cosmo
and later
engines; 654 per chamber. Early RX7's had 12A and then 13B engines.
The 12A is
closer to the Norton. What is the rotor radius, eccentricity, "a" and
rotor
width? Almost all the Mazda engines shared dimensions except the
rotor width.

Dale Davies

Norton bike rotaries are 588 and 700 ccm total displacement, not per
chamber. All including early air-cooled versions were 2-rotor. The new
motor would be very pricey alone, even if it does become available, as
production numbers will be very small for now. Being most motorcycles
are of unit construction, that is motor, primary drive, and
 transmission
sharing same castings splitting components may be a problem. I know
where there sits a '90's F-1 sport bike version, but plastic would have
to come off to find out. I see nothing but problems. Mazda motors are
dime-a-dozen respectively.

Sincerely,

Al Koivisto

 The March 2011 issue of "Motorcyclist" magazine has a short article and
 pictures of 13B powered motorcycle built by one Rodney Aguiar. Mostly
 BMW R1100Gs with Suzuki front suspension. 250 Hp makes it a apparent
 handful. More info at <http://www.propulsionlab.com
<http://www.propulsionlab.com/>
 <http://www.propulsionlab.com/> plus other off-the-wall creations.

 Al Koivisto


 Here is one seen at Seven Stock in 2006.

 Paul Lamar


Paul, Makes me wonder why aircraft cowls are so stuffed and this
install looks so uncomplicated.

george

Notice there is no cooling system to speak of :)

Paul Lamar


Hi,

The Norton was based on a F &  Sachs?  Geometry, e=11.6 mm , R=71 mm, a
=0.5 mm, although later the Geometry was changed to R=69 mm and a=2.5
mm. it was a twin rotor 588 cc swept volume 294 cc per Rotor.
The Race machine produced over 150 BHP and it life was around 20 hours,
the gearbox designed for a total life of 24 hours, 30 minutes for first
gear with 10 stall starts, and so on, at the Northwest in Northern
Ireland in 1989 the Race machine was clocked through the speed trap at
194 MPH, we had trouble with the motors smearing due to the shutting off
at the end of this straight and much to the riders dislike the only
quick fix was to run with a very fast tick over of around 3000 rpm ( to
keep the exhaust ejector working ), the riders had no choice, I was a
Director at Norton and gave them a choice, we race with Tick over or
pack up and go home, we at that time had not gone through a practice
session and 7 motors failed, of course the general public had no
knowledge of this.

Just prior to final Practice I flew out from Liverpool Airport to
Belfast with our Chief Engine builder Dave Evans with two motors each as
hand luggage, and as I remember some underwear as packing.
The eccentric shaft Comparator that I also took was finally allowed on
board after I demonstrated that the pistol looking grip was part of the
stripped down comparator.

More at another time.

Bob