X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from mail-fx0-f216.google.com ([209.85.220.216] verified) by logan.com (CommuniGate Pro SMTP 5.3c2) with ESMTP id 3980660 for flyrotary@lancaironline.net; Wed, 18 Nov 2009 08:11:36 -0500 Received-SPF: pass receiver=logan.com; client-ip=209.85.220.216; envelope-from=msteitle@gmail.com Received: by fxm8 with SMTP id 8so1185694fxm.27 for ; Wed, 18 Nov 2009 05:11:01 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=domainkey-signature:mime-version:received:in-reply-to:references :date:message-id:subject:from:to:content-type; bh=5MVRY3qRIYMh7zW//b8naxBlw8/RTEvbwQ9MyOkOpaI=; b=xlcR9Fhk81XmlyWP8LtV067hzygAKUaOSLwbR+duFx2lzS73zWNAwKYrcFymL1mfQZ WyPHdf/f1xE6hBj/m7j+DapKpba/NGKgsKP2fKPqD9/dCJ2HFlXuiuShLP5n9RvgU6PN 6K1Te31t6Rl8u8uL4t+wJFWRH64SUBIhhgM14= DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=mime-version:in-reply-to:references:date:message-id:subject:from:to :content-type; b=lL+ieychBt3iNkxiXeW/tii8cPlhE2LMnVvaU7D+D0JWZ5O6WIrwMsvAOAqBHb4GG9 7XwxMjWSjj8QWSo8qfN7UI6FBuki290FS2hV7oiWupg8Pm4J8WiRGRO7WIpp4Ef4zt+K R6IarX+tu7mAjm38oVqyNfbs76nT53xjNBv4M= MIME-Version: 1.0 Received: by 10.204.48.194 with SMTP id s2mr6716578bkf.210.1258549860734; Wed, 18 Nov 2009 05:11:00 -0800 (PST) In-Reply-To: References: Date: Wed, 18 Nov 2009 07:11:00 -0600 Message-ID: <5cf132c0911180511n2a3c9c02l840b34532a03a567@mail.gmail.com> Subject: Re: [FlyRotary] Re: Ping From: Mark Steitle To: Rotary motors in aircraft Content-Type: multipart/alternative; boundary=000325556f5a619c800478a4f950 --000325556f5a619c800478a4f950 Content-Type: text/plain; charset=windows-1252 Content-Transfer-Encoding: quoted-printable Thomas, Sounds like you're making good progress. The 20B makes a great a/c engine. Biggest problem is cooling. Pay close attention to size and placement of radiators & plenum design. And don't underestimate the oil cooling requirements. That's 1/3 of the cooling load. Make sure the heated air ca= n get out of the cowl. I think the jury is still out on the "perfect" muffler. The only thing tha= t I know that works is a turbo-charger as it homoginizes the exhaust pulses. But up till now, those have been problematic, and they're heavy. The fishtail may work, if you can design it to survive for any length of time. Ed Anderson tried it and it self-destructed in a very short time. But then I don't know the details of his design (the devil's in the details). Also, Al G's Velocity has a nice muffler/resonator arrangement that seems to work well. May be worth a look. The p-port design solves a lot of the intake design headaches. You'll have to fabricate a slide throttle, but those are pretty straight forward and ca= n be built with a standard drill press. Then you use three 180* bends to get the intakes up and over the engine (to the cool side), then into a plenum/filter and you're done. Much easier than fabricating a six runner side-port manifold. Good luck and Happy Thanksgiving, Mark S. On Tue, Nov 17, 2009 at 10:28 PM, Thomas Mann wrote: > Well there ya go Mark=85=85.. just the person I need to talk to. > > > > I=92m still building my canard aircraft. I just came up out of the > basement/shop after putting in another 4 hours on my split canopy frame > plug. I should have my mold layup complete this weekend and a CF version = of > the frame by the end of Turkey Day weekend. > > > > My power plant of choice is a 20B P-Port. I have the PSRU from Tracy and = an > engine mount from the Cozy Girrrls. > > > > I=92m tracking the two big issues on my mind as I work towards the engine > part of the project. > > Intake and Exhaust. > > > > I really like the cool side intake design. Is anyone fabricating this for= a > 20B or is it a DIY project. > > > > As far as exhaust, I find the fish tail design interesting. I wonder if t= he > exhaust was split out into a flat wide pattern projecting the sound into > several directions at once if it would dissipate the sound waves enough t= o > result in a quieter result =85=85=85. Or maybe just annoy more people at = the same > time. > > > > I=92m hoping to be addressing this in the spring. > > > > T Mann > > > > *From:* Rotary motors in aircraft [mailto:flyrotary@lancaironline.net] *O= n > Behalf Of *Mark Steitle > *Sent:* Tuesday, November 17, 2009 8:46 PM > *To:* Rotary motors in aircraft > *Subject:* [FlyRotary] Re: Ping > > > > Thomas, > > > > Some of us are still hanging around reading/sending emails (when we shoul= d > be working). Maybe there are a bunch of us that don't have time to email > because we're hard at work on our projects. Could happen. > > > > Personally, I've been making some mods to my cooling system by changing > from two coolers in series to two parallel loops. It required some > additional AN fittings, so I am waiting for my order from Earl's. > > > > Also, in my spare time, I'm working on building up a new p-port 20B, > including a new tangential muffler and slide throttle. Lots of irons in = the > fire right now. Received my new apex seals today... waiting for the TES > o-rings from Creavey Seal. > > > > Mark > > On Tue, Nov 17, 2009 at 4:47 PM, Thomas Mann wrote: > > Did everyone leave for Thanksgiving already? > > > -- > Homepage: http://www.flyrotary.com/ > Archive and UnSub: > http://mail.lancaironline.net:81/lists/flyrotary/List.html > > > --000325556f5a619c800478a4f950 Content-Type: text/html; charset=windows-1252 Content-Transfer-Encoding: quoted-printable
Thomas,
=A0
Sounds like you're making good progress.=A0 The 20B makes a great = a/c engine.=A0 Biggest problem is cooling.=A0 Pay close attention to size a= nd=A0placement of radiators & plenum design.=A0 And don't underesti= mate the oil cooling requirements.=A0 That's 1/3 of the cooling load.= =A0 Make sure the heated air can get out of the cowl.=A0
=A0
I think the jury is still out on the "perfect" muffler.=A0 T= he only thing that I know that works is a turbo-charger as it homoginizes t= he exhaust pulses.=A0 But up till now, those have been problematic, and the= y're heavy.=A0 The fishtail may work, if you can design it to survive f= or any length of time.=A0 Ed Anderson tried it and it self-destructed in a = very short time.=A0 But then I don't know the details of his design (th= e devil's in the details).=A0 Also, Al G's Velocity has a nice muff= ler/resonator arrangement that seems to work well.=A0 May be worth a look.= =A0
=A0
The p-port design solves a lot of the intake design headaches.=A0 You&= #39;ll have to fabricate a slide throttle, but those are pretty straight fo= rward and can be built with a standard drill press.=A0 Then you use three 1= 80* bends to get the intakes up and over the engine (to the cool side), the= n into a plenum/filter and you're done.=A0 Much easier than fabricating= a=A0six runner side-port=A0manifold.
=A0
Good luck and Happy Thanksgiving,=A0
Mark S.

On Tue, Nov 17, 2009 at 10:28 PM, Thomas Mann <tmann@n200lz.com> wrote:

Well= there ya go Mark=85=85.. just the person I need to talk to.

=A0<= /span>

I=92= m still building my canard aircraft. I just came up out of the basement/sho= p after putting in another 4 hours on my split canopy frame plug. I should = have my mold layup complete this weekend and a CF version of the frame by t= he end of Turkey Day weekend.

=A0<= /span>

My p= ower plant of choice is a 20B P-Port. I have the PSRU from Tracy and an eng= ine mount from the Cozy Girrrls.

=A0<= /span>

I=92= m tracking the two big issues on my mind as I work towards the engine part = of the project.

Inta= ke and Exhaust.

=A0<= /span>

I re= ally like the cool side intake design. Is anyone fabricating this for a 20B= or is it a DIY project.

=A0<= /span>

As f= ar as exhaust, I find the fish tail design interesting. I wonder if the exh= aust was split out into a flat wide pattern projecting the sound into sever= al directions at once if it would dissipate the sound waves enough to resul= t in a quieter result =85=85=85. Or maybe just annoy more people at the sam= e time.

=A0<= /span>

I=92= m hoping to be addressing this in the spring.

=A0<= /span>

T Ma= nn

=A0

From:<= span style=3D"FONT-SIZE: 10pt"> Rotary motors in aircraft [mailto:flyrotary@lancair= online.net] On Behalf Of Mark Steitle
Sent: Tuesday, November 17, 2009 8:46 PM
To: Rotary motors= in aircraft
Subject: [FlyRotary] Re: Ping

=A0

Thomas,

=A0

Some of us are still hanging around reading/sending = emails (when we should be working). =A0Maybe there are a bunch of us that d= on't have time to email because we're hard at work on our projects.= =A0Could happen. =A0

=A0

Personally, I've been making some mods to my coo= ling system by changing from two coolers in series to two parallel loops. = =A0It required some additional AN fittings, so I am waiting for my order fr= om Earl's. =A0

=A0

Also, in my spare time, I'm working on building = up a new p-port 20B, including a new tangential muffler and slide throttle.= =A0Lots of irons in the fire right now. Received my new apex seals today..= . waiting for the TES o-rings from Creavey Seal.

=A0

Mark=A0

On Tue, Nov 17, 2009 at 4:47 PM, Thomas Mann <tmann@n200lz.com>= wrote:

Did everyone leave for Thanksgiving already?


--
Homepage: =A0http://www.flyrotary.com/
Archive= and UnSub: =A0 http://mail.lancaironline.net:81/lists/flyrot= ary/List.html

=A0


--000325556f5a619c800478a4f950--