X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from cdptpa-omtalb.mail.rr.com ([75.180.132.123] verified) by logan.com (CommuniGate Pro SMTP 5.2.16) with ESMTP id 3871616 for flyrotary@lancaironline.net; Thu, 01 Oct 2009 17:40:19 -0400 Received-SPF: pass receiver=logan.com; client-ip=75.180.132.123; envelope-from=eanderson@carolina.rr.com Received: from computername ([75.191.186.236]) by cdptpa-omta02.mail.rr.com with ESMTP id <20091001213941554.INRU6584@cdptpa-omta02.mail.rr.com> for ; Thu, 1 Oct 2009 21:39:41 +0000 From: "Ed Anderson" To: "'Rotary motors in aircraft'" Subject: SS hand rail tubing/pipe: [FlyRotary] Re: "Tangential Muffler" was Quiet is Deafening Date: Thu, 1 Oct 2009 17:39:47 -0400 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0015_01CA42BE.2BCA2D10" X-Mailer: Microsoft Office Outlook, Build 11.0.5510 Thread-Index: AcpC3MDlIAbwI3rcRiG1q2AnsqVGdwAApc1Q X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.5579 In-Reply-To: Message-Id: <20091001213941554.INRU6584@cdptpa-omta02.mail.rr.com> This is a multi-part message in MIME format. ------=_NextPart_000_0015_01CA42BE.2BCA2D10 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Over 500 hours on them and it looks like they are going to outlast me. They do oxidize under the rotary heat, but apparently very slowly and after 500 hours and 10 years they show no signs of deterioration. I agree I think the almost 1/8" thick wall has a lot to do with their longevity. It does add a bit to their weight, but my concern about that very hot exhaust getting loose under the cowl will probably ensure they remain there. Ed Ed Anderson Rv-6A N494BW Rotary Powered Matthews, NC eanderson@carolina.rr.com http://www.andersonee.com http://www.dmack.net/mazda/index.html http://www.flyrotary.com/ http://members.cox.net/rogersda/rotary/configs.htm#N494BW http://www.rotaryaviation.com/Rotorhead%20Truth.htm _____ From: Rotary motors in aircraft [mailto:flyrotary@lancaironline.net] On Behalf Of Mark Steitle Sent: Thursday, October 01, 2009 5:18 PM To: Rotary motors in aircraft Subject: [FlyRotary] Re: "Tangential Muffler" was Quiet is Deafening I agree on using Inconel... that's what I'm using for my new tangential muffler. Although my first exhaust manifold, which I'm still running, was made from commercial SS hand rail material and is holding up fine. It is heavy, but lighter than using the stock cast iron manifold. Ed Anderson is using these same SS handrails on his a/c and has lots of hours on them. The secret is in the thickness (.140"). Mark On Thu, Oct 1, 2009 at 1:28 PM, Kelly Troyer wrote: Mark, Probably should be made from "Inconel" to last..............My memory fails me (regularly) but if I recall correctly Al G's is inconel...............Jump in here Al................... -- Kelly Troyer "Dyke Delta"_13B ROTARY Engine "RWS"_RD1C/EC2/EM2 "Mistral"_Backplate/Oil Manifold -------------- Original message from Mark Steitle : -------------- Kelly, You just need to fly at Mach 1 so you stay ahead of the sound. ;-) Can anyone report on the effectiveness of the tangential muffler in actual real world situations? (As I recall Al G. is running a tangential muffler on his Velocity.) I ask because I'm in the process of building one for my Lancair with the hopes that it will work better than the DNA muffler that I'm currently running. I think it will work better at reducing the noise level in the cabin, but at what cost to power? Hopefully, this will save me the cost of a new Zulu ANR headset. Comments appreciated. Mark S. On Wed, Sep 30, 2009 at 10:01 PM, Mike Wills wrote: Kelly, If you think the quiet is deafening go fly behind a rotary - now thats deafening! Mike Wills RV-4 N144MW ----- Original Message ----- From: Kelly Troyer To: Rotary motors in aircraft Sent: Wednesday, September 30, 2009 7:15 AM Subject: [FlyRotary] Quiet is Deafening Anyone out there ??.....................<:) -- Kelly Troyer "Dyke Delta"_13B ROTARY Engine "RWS"_RD1C/EC2/EM2 "Mistral"_Backplate/Oil Manifold -------------- Original message from "Patrick Panzera" : -------------- Hey gang! I came across a rare find this weekend. Any serious rotorhead will certainly appreciate this. Bluelines from 1973 of the General Motors Wankel Rotary engine. I just put them up on eBay http://tinyurl.com/GM-Rotary-drawings Pat ------=_NextPart_000_0015_01CA42BE.2BCA2D10 Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable

Over 500 hours on them and it looks = like they are going to outlast me.  They do oxidize under the rotary = heat, but apparently very slowly and after 500 hours and 10 years they show no = signs of deterioration.

 

I agree I think the almost = 1/8” thick wall has a lot to do with their longevity.  It does add a bit = to their weight, but my concern about that very hot exhaust getting loose under = the cowl will probably ensure they remain there.

  =

 

Ed

 

From: = Rotary motors in aircraft [mailto:flyrotary@lancaironline.net] On Behalf Of Mark Steitle
Sent: Thursday, October = 01, 2009 5:18 PM
To: Rotary motors in = aircraft
Subject: [FlyRotary] Re: "Tangential Muffler" was Quiet is = Deafening

 

I agree on using Inconel... that's what I'm using for my new = tangential muffler.  Although my first exhaust manifold, which I'm still running, was made from commercial SS hand rail material and is = holding up fine.  It is heavy, but lighter than using the stock cast iron manifold.  Ed Anderson is using these same SS handrails on his a/c = and has lots of hours on them.  The secret is in the thickness = (.140"). 

 

Mark 

On Thu, Oct 1, 2009 at 1:28 PM, Kelly Troyer <keltro@att.net> = wrote:

Mark,

   Probably should be made from "Inconel" to last..............My memory fails me (regularly) = but

if I recall correctly Al G's is inconel...............Jump in = here Al...................

--
Kelly Troyer
"Dyke Delta"_13B ROTARY Engine
"RWS"_RD1C/EC2/EM2
"Mistral"_Backplate/Oil Manifold


 

-------------- = Original message from Mark Steitle <msteitle@gmail.com>: -------------- =

Kelly,

 

You just need to fly at Mach 1 so you stay ahead of the = sound.  ;-)

 

Can anyone report on the effectiveness of the tangential muffler = in actual real world situations?  (As I recall Al G. is running a = tangential muffler on his Velocity.)  I ask because I'm in the process of = building one for my Lancair with the hopes that it will work better than the DNA = muffler that I'm currently running.  I think it will work better at = reducing the noise level in the cabin, but at what cost to power?  Hopefully, = this will save me the cost of a new Zulu ANR headset.  Comments = appreciated.

 

Mark = S.

On Wed, Sep 30, 2009 at 10:01 PM, Mike Wills <rv-4mike@cox.net> = wrote:

Kelly,

 

 If you think the quiet is deafening go fly = behind a rotary - now thats deafening!

 

Mike = Wills

RV-4 = N144MW

----- Original Message ----- =

From: Kelly Troyer

Sent: = Wednesday, September 30, 2009 7:15 AM

Subject: = [FlyRotary] Quiet is Deafening

 

Anyone out there = ??.....................<:)

--
Kelly Troyer
"Dyke Delta"_13B ROTARY Engine
"RWS"_RD1C/EC2/EM2
"Mistral"_Backplate/Oil Manifold


 

-------------- = Original message from "Patrick Panzera" <panzera@experimental-aviation.com>: --------------

Hey gang!

 

I came across a rare find this = weekend.

Any serious rotorhead will certainly appreciate = this.

 

Bluelines from 1973 of the General Motors Wankel = Rotary engine.

 

I just put them up on = eBay

 

http://tinyurl.com/GM-Rotary-drawings=

 

Pat

 

 

 

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