X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from wf-out-1314.google.com ([209.85.200.175] verified) by logan.com (CommuniGate Pro SMTP 5.2.0) with ESMTP id 2784144 for flyrotary@lancaironline.net; Sun, 09 Mar 2008 11:48:07 -0400 Received-SPF: pass receiver=logan.com; client-ip=209.85.200.175; envelope-from=rwstracy@gmail.com Received: by wf-out-1314.google.com with SMTP id 28so1396871wfa.25 for ; Sun, 09 Mar 2008 08:47:28 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=domainkey-signature:received:received:message-id:date:from:sender:to:subject:in-reply-to:mime-version:content-type:references:x-google-sender-auth; bh=S7+mThq4yIIENvaIMe/1gwO5DiLvxgOPehJLOW6efLU=; b=tjJpMDUlsL31dBMR9dKwWU66SNOPVaj/mMq+yZZsMW+uRdGc9MaJwi+7ru0H1W0aWj//K4W9Rx8v0x7At7xeMD07TgaINZnIIq1Q0JMppFBRFtxgWAb8tqwpShpqu580WLOmQYjfAzm7b0AG0e4GFvuYFGbdHC2pgNlwYk7q7nQ= DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=message-id:date:from:sender:to:subject:in-reply-to:mime-version:content-type:references:x-google-sender-auth; b=ClTrzfa5hsDnaEK9FLyq/D+NsET5UJjTn71d3hU8aV5CF+EDKzhTILq+bFaQvNYdn97MqYTYbjx0dFvtdhqmULz0xxoFbTrpctaNsyDjVOxYM40AIiIE3nY/cv6Wsj98PFmZmdis9m4cyG9t5Zm6VNA1NKmzxCLdsrLg1o3TTfE= Received: by 10.142.163.14 with SMTP id l14mr1400142wfe.73.1205077647960; Sun, 09 Mar 2008 08:47:27 -0700 (PDT) Received: by 10.143.125.5 with HTTP; Sun, 9 Mar 2008 08:47:27 -0700 (PDT) Message-ID: <1b4b137c0803090847r61a6a1a5yf10a0d61511d943f@mail.gmail.com> Date: Sun, 9 Mar 2008 11:47:27 -0400 From: "Tracy Crook" Sender: rwstracy@gmail.com To: "Rotary motors in aircraft" Subject: Re: [FlyRotary] Re : [FlyRotary] Re: Anyone have an RD-1C for sale? In-Reply-To: MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_Part_7763_23767894.1205077647932" References: X-Google-Sender-Auth: 53d8bac75b71ed9e ------=_Part_7763_23767894.1205077647932 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable Content-Disposition: inline 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 on= e > 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? > =C0: 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) > > > > > > > > > > > > > > > ------=_Part_7763_23767894.1205077647932 Content-Type: text/html; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable Content-Disposition: inline
Yeah, it could work on those planes but the numbers for this setup fav= or 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.<= /div>
 
Tracy

On Sun, Mar 9, 2008 at 11:38 AM, <jrmjoseph@videotron.ca> wrote:
Yes a two rotor direct drive with hp between 80 and 120.  For a C= H701 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 &l= t;tracy@rotar= yaviation.com>
Date: Dimanche, Mars 9, 2008 11:30 am
Objet: [F= lyRotary] Re: Anyone have an RD-1C for sale?
=C0: Rotary motors in aircraft <flyrotary@lancaironline.net>=20


> Damn Rusty, I'd give anything for yo= ur organizational skills and
> work habits
> but darned if I c= an figure out your masochistic (sp?)
> tendencies on this
> pl= ane :>) 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.=20

>
> Tracy (making carbon fiber parts)>
>
>
> On Sun, Mar 9, 2008 at 1:04 AM, Russell D= uffy
> wrote:
>
> > Good one mate, I kn= ew you couldn't let it go.
> >
> > Hi George,
>= >
> > Well that certainly IS the problem. I was all set to bol= t 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 wil= l 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-1= C, the
> damper on the
> > Autoflight drive didn't magi= cally fix the resonance problem,
> and the RV-3
> > has cha= nged the power requirements. For previous aircraft, I
> was only
> > planning to have about 80 HP, and that would fal= l within the
> 6000 rpm limit
> > of the Autoflight drive. = Now that I can use as much power as
> I can make, I
> > nee= d more RPM.
> >
> > The offset thrust line of the Autoflight drive would= have
> worked well for
> > the previous aircraft I was con= sidering, 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 Aut= oflight drive is about 12 lbs lighter IIRC, but I have
> the opposit= e
> > problem with weight now. A single made from stock housings i= s way
> > overweight compared to 912S, but compared to an O-200 or O-
&g= t; 235, it's just
> > fine. Using stock housings will just lim= it you to aircraft
> that were
> > designed for 100-125 HP = LyConts.
> >
> > Finally, I really like the carbon fiber ground adjus= table prop that
> > Sensenich makes, and the RD-1C rotates the pro= per direction to
> use it.
> >
> > I should probab= ly 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 w= ho 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.
> >
> > R= usty (watching the salt magically melt snow)
> >
> >
&= gt; >
> >
>

------=_Part_7763_23767894.1205077647932--