> > > > > > > > We are contemplating the use of a rotary engine in
     > > > > > > > pusher configuration on a gyroplane.
     > > > > >
     > > > > > Kevin Richey wrote:
     > > > > > >
     > > > > > > Woody:
     > > > > > >
     > > > > > > Is this for the Twinstar gyro built by Don Farrington?
     > > > > > >
     > > > > > > Kevin

     > > > > woody DE wrote:
     > > > > >
     > > > > > Dear Kevin ;
     > > > > >
     > > > > > Thank you for your reply.
     > > > > > I have bought the Twinstarr manufacturing rights, all tooling etc..
     > > > > > We have made an ultralight version of the Twinstarr, called the Twinstarrlite, which meets the stringent European ultralight rules.
     > > > > > The machine is now a lot lighter and handles well. In order to make other engine option availabe, we are loking intensively at a single
     rotor Mazda
     > > > > > aplication, in the knowledge that the Norton rotary is too expensoive and apparently had some shortcomings (at least the earlier version).
     > > > > > I hope somebody can help.
     > > > > >
     > > > > > I heard years ago that Atkins rotary made a single rotorversion out of a 13B, but it produced only 90 HP . I think nowadays with the 20B ,
     fuel economy as
     > > > > > well as output may have been increased.
     > > > > >
     > > > > > Sincerely,
     > > > > >
     > > > > > Woody DE SAAR-
     > > >
     > > > >
     > > > > **** Hi Woody, I have been collecting single rotor info for 2 years now, mostly off this newsletter, however to save you a lot sifting thru
     irrelevant
     > > > > material you can contact me for single rotor specific items . A lot of development has gone on in Australia with turbo singles where they
     race in the turbo 2
     > > > > litre sports sedan class and Guru are seeing around 240hp at the rear wheels on a roller dyno. N/A REW engines are showing 97HP@ 8500 at the
     rear wheels,
     > > > > which is approx115-120 at the flywheel; RX8 based engines are expected to show a 10% increase on these figures with better BSFC due to
     improved port design.
     > > > > An RX8 single is due to be dynoed in a week ot two. BR, Dave McCandless, daval@iprimus .com.au

     > > ****Hi Fred, go to www.gurumotorsports.com They make single rotor engines and have agents in the US, also they were at Sevenoaks last year, and
     maybe this year,
     > > again. I do not know if they will sell you a shaft alone, probably the balanced rotating assembly more likely. Address your msg to Rohan
     Ambrose. BR Dave McC
     > >

woody DE wrote:

I would be interested to have the Dyno results.

Woody

Rotary engines have more or less a straight line dyno curve from zero RPM to
max HP RPM. There may be a little curvature towards the end.

Paul Lamar
 
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