If I remember right it was with max 2700RPM.  The FWF total weight was 165LBS.  Cant remember the hp at 2700RPM.

 

Has for the right application with the right prop for a stol aircraft.  Tracy I'm lacking the knowledge to understand your point of view.  I'll take your word.   Maybe someone wish to explain here or contact me directly.  Or send me a link explaining this.  To further expand my understanding of Tracy's comment.  Many thanks to you guys.

 

Rusty I live in Montreal Canada and yesterday we received our 29th snow storm.  I understand you :))

 

Marc J. 

----- Message d'origine -----
De: Tracy Crook <tracy@rotaryaviation.com>
Date: Dimanche, Mars 9, 2008 11:48 am
Objet: [FlyRotary] Re: Re : [FlyRotary] Re: Anyone have an RD-1C for sale?
À: Rotary motors in aircraft <flyrotary@lancaironline.net>

> Yeah, it could work on those planes but the numbers for this
> setup favor a
> faster plane due to the smaller diameter prop required. A
> short prop can
> be efficient at high speed but it looses it at the low end.
>
> Tracy
>
> On Sun, Mar 9, 2008 at 11:38 AM, wrote:
>
> > Yes a two rotor direct drive with hp between 80 and 120. For
> a CH701 or
> > another stol aircraft. This is the engine I'm looking for. I
> know of one
> > person (cant remember his name) who built one using a 12A.
> >
> > Marc J.
> >
> > ----- Message d'origine -----
> > De: Tracy Crook
> > Date: Dimanche, Mars 9, 2008 11:30 am
> > Objet: [FlyRotary] Re: Anyone have an RD-1C for sale?
> > À: Rotary motors in aircraft
> >
> > > Damn Rusty, I'd give anything for your organizational skills and
> > > work habits
> > > but darned if I can figure out your masochistic (sp?)
> > > tendencies on this
> > > plane :>) One Rotor????
> > >
> > > Sure, that can work but why not something completely
> > > different? I want
> > > to see someone do a direct drive 2 rotor (maybe even
> turboed) in
> > > the right
> > > application and the RV-3 comes close. That would be Kool!
> > >
> > > I know, everyone has their own idea of what's cool. Kick ass on
> > > whateveryou decide to do Rusty.
> > >
> > > Tracy (making carbon fiber parts)
> > >
> > >
> > >
> > > On Sun, Mar 9, 2008 at 1:04 AM, Russell Duffy
> > > wrote:
> > >
> > > > Good one mate, I knew you couldn't let it go.
> > > >
> > > > Hi George,
> > > >
> > > > Well that certainly IS the problem. I was all set to bolt a
> > > Lycoming> on the RV-3, but I realize that what I need is a
> > > project, not a plane.
> > > > Since there's no doubt a single will work for an RV-3, there's
> > > really no
> > > > reason not to do it.
> > > >
> > > > While it may seem wishy washy to go back to the RD-1C, the
> > > damper on the
> > > > Autoflight drive didn't magically fix the resonance problem,
> > > and the RV-3
> > > > has changed the power requirements. For previous aircraft, I
> > > was only
> > > > planning to have about 80 HP, and that would fall within the
> > > 6000 rpm limit
> > > > of the Autoflight drive. Now that I can use as much power as
> > > I can make, I
> > > > need more RPM.
> > > >
> > > > The offset thrust line of the Autoflight drive would have
> > > worked well for
> > > > the previous aircraft I was considering, but not so well for
> > > the RV cowl.
> > > > The mount plate on Tracy's drive is also really handy for
> mounting> > > coolers for the RV cowl inlets.
> > > >
> > > > The Autoflight drive is about 12 lbs lighter IIRC, but I have
> > > the opposite
> > > > problem with weight now. A single made from stock housings
> is way
> > > > overweight compared to 912S, but compared to an O-200 or O-
> > > 235, it's just
> > > > fine. Using stock housings will just limit you to aircraft
> > > that were
> > > > designed for 100-125 HP LyConts.
> > > >
> > > > Finally, I really like the carbon fiber ground adjustable
> prop that
> > > > Sensenich makes, and the RD-1C rotates the proper
> direction to
> > > use it.
> > > >
> > > > I should probably be more concerned with building the plane
> > > for now, but I
> > > > can't help but think of engine stuff. I've got a partial
> > > mount on order
> > > > from the guys who make Van's mounts. I don't know if I'll try
> > > to make a
> > > > beam style mount, or use a sandwich plate similar to the old
> > > CCI mount.
> > > > Either way, I'll size it to fit either the single rotor,
> or a
> > > two rotor as a
> > > > fall back plan.
> > > >
> > > > Enough babbling for now.
> > > >
> > > > Rusty (watching the salt magically melt snow)
> > > >
> > > >
> > > >
> > > >
> > >
> >
>