X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from poplet2.per.eftel.com ([203.24.100.45] verified) by logan.com (CommuniGate Pro SMTP 5.2.16) with ESMTP id 3871661 for flyrotary@lancaironline.net; Thu, 01 Oct 2009 18:43:57 -0400 Received-SPF: none receiver=logan.com; client-ip=203.24.100.45; envelope-from=lendich@aanet.com.au Received: from sv1-1.aanet.com.au (sv1-1.per.aanet.com.au [203.24.100.68]) by poplet2.per.eftel.com (Postfix) with ESMTP id 83255173761 for ; Fri, 2 Oct 2009 06:43:22 +0800 (WST) Received: from ownerf1fc517b8 (203.171.92.134.static.rev.aanet.com.au [203.171.92.134]) by sv1-1.aanet.com.au (Postfix) with SMTP id CA376BEC01A for ; Fri, 2 Oct 2009 06:43:21 +0800 (WST) Message-ID: From: "George Lendich" To: "Rotary motors in aircraft" References: Subject: Re: [FlyRotary] Re: "Tangential Muffler" was Quiet is Deafening Date: Fri, 2 Oct 2009 08:43:24 +1000 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_001D_01CA433C.676D1020" X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2900.5843 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.5579 X-Antivirus: avast! (VPS 090930-0, 09/30/2009), Outbound message X-Antivirus-Status: Clean This is a multi-part message in MIME format. ------=_NextPart_000_001D_01CA433C.676D1020 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Mark, Inconel is terrific stuff and expensive and light, but it doesn't last = long, ask the racing crowd. The heat cycling kills it. Stick to SS. George ( down under) 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").=20 Mark=20 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=20 "Dyke Delta"_13B ROTARY Engine=20 "RWS"_RD1C/EC2/EM2=20 "Mistral"_Backplate/Oil Manifold=20 -------------- Original message from Mark Steitle = : --------------=20 Kelly,=20 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 -----=20 From: Kelly Troyer=20 To: Rotary motors in aircraft=20 Sent: Wednesday, September 30, 2009 7:15 AM Subject: [FlyRotary] Quiet is Deafening Anyone out there ??.....................<:) -- Kelly Troyer=20 "Dyke Delta"_13B ROTARY Engine=20 "RWS"_RD1C/EC2/EM2=20 "Mistral"_Backplate/Oil Manifold=20 -------------- Original message from "Patrick Panzera" = : --------------=20 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_001D_01CA433C.676D1020 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable
 Mark,
Inconel is terrific stuff and expensive = and light,=20 but it doesn't last long, ask the racing crowd. The heat cycling kills=20 it.
Stick to SS.
George ( down under)

 
I agree on using Inconel... that's what I'm using for my new = tangential=20 muffler.  Although my first exhaust manifold, which I'm still=20 running, was made from commercial SS hand rail material and is = holding up=20 fine.  It is heavy, but lighter than using the stock cast iron=20 manifold.  Ed Anderson is using these same SS handrails on his = a/c and=20 has lots of hours on them.  The secret is in the thickness=20 (.140"). 
 
Mark 

On Thu, Oct 1, 2009 at 1:28 PM, Kelly Troyer = <keltro@att.net>=20 wrote:
Mark,
   Probably should be made from "Inconel" to=20 last..............My memory fails me (regularly) but
if I recall correctly Al G's is inconel...............Jump in = here=20 Al...................
--
Kelly Troyer
"Dyke Delta"_13B ROTARY Engine=20
"RWS"_RD1C/EC2/EM2
"Mistral"_Backplate/Oil Manifold=20



 
--------------=20 Original message from Mark Steitle <msteitle@gmail.com>: -------------- =

Kelly,
 
You just need to fly at Mach 1 so you stay ahead of the = sound. =20 ;-)
 
Can anyone report on the effectiveness of the tangential = muffler in=20 actual real world situations?  (As I recall Al G. is running = a=20 tangential muffler on his Velocity.)  I ask because I'm in = the=20 process of building one for my Lancair with the hopes that it will = work=20 better than the DNA muffler that I'm currently running.  I = think it=20 will work better at reducing the noise level in the cabin, but at = what=20 cost to power?  Hopefully, this will save me the cost of a = new Zulu=20 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=20 go fly behind a rotary - now thats deafening!
 
Mike Wills
RV-4 N144MW
----- Original Message ----- =
From: Kelly=20 Troyer
To: Rotary motors=20 in aircraft
Sent: Wednesday, = September 30,=20 2009 7:15 AM
Subject: [FlyRotary] = Quiet is=20 Deafening

Anyone out there ??.....................<:)
--
Kelly Troyer
"Dyke Delta"_13B ROTARY Engine=20
"RWS"_RD1C/EC2/EM2
"Mistral"_Backplate/Oil Manifold=20



 
--------------=20 Original message from "Patrick Panzera" <panzera@experimental-aviation.com>:=20 --------------

Hey=20 gang!

 

I = came=20 across a rare find this weekend.

Any serious=20 rotorhead will certainly appreciate this.

 

Bluelines=20 from 1973 of the General Motors Wankel Rotary=20 engine.

 

I = just put=20 them up on eBay

 

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

 

Pat

 



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