X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from [66.219.56.245] (HELO mail.qnsi.net) by logan.com (CommuniGate Pro SMTP 5.2.16) with ESMTP id 3812541 for flyrotary@lancaironline.net; Thu, 13 Aug 2009 20:25:08 -0400 Received-SPF: none receiver=logan.com; client-ip=66.219.56.245; envelope-from=bhughes@qnsi.net Return-Receipt-To: "Bobby J. Hughes" Subject: RE: [FlyRotary] Re: Moving muffler to belly MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----_=_NextPart_001_01CA1C7E.56FFA232" Disposition-Notification-To: "Bobby J. Hughes" Content-class: urn:content-classes:message Date: Thu, 13 Aug 2009 19:27:07 -0600 X-MimeOLE: Produced By Microsoft Exchange V6.5 Message-ID: <74120FDE88CAFE4DBDA8814BCE20A3F315E938@qnsi-mail.qnsi.net> X-MS-Has-Attach: X-MS-TNEF-Correlator: Thread-Topic: [FlyRotary] Re: Moving muffler to belly Thread-Index: AcocShVL/xUTjU8BStuVHIr8Xcdc9AAM3pQg References: From: "Bobby J. Hughes" To: "Rotary motors in aircraft" This is a multi-part message in MIME format. ------_=_NextPart_001_01CA1C7E.56FFA232 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable Thanks for the input everyone. The front of the muffler can be supported from the motor mount. The rear muffler mount is the dilemma. I hate the idea of an external doubler but I think it really needs one. =20 Bobby ________________________________ From: Rotary motors in aircraft [mailto:flyrotary@lancaironline.net] On Behalf Of Tracy Crook Sent: Thursday, August 13, 2009 12:10 PM To: Rotary motors in aircraft Subject: [FlyRotary] Re: Moving muffler to belly Mine is less than 1" from the belly to keep it in the turbulent slipstream behind the cooling exit and avoid drag. A .007" thick piece of SS heat shield is riveted to the belly in this area. The SS expands when heated and creates its own airgap for insulation. Tracy =20 On Thu, Aug 13, 2009 at 10:08 AM, Bobby J. Hughes wrote: I've had the plane down for a few weeks making several changes. I would like to move my muffler out of the cowl to the airframe belly. How much space should I leave between the top of the muffler and bottom skin? My exit fairing hangs down about 5" below the airframe. What have others done for heat shielding \ paint protection? Since the floor pans are installed any riveting will have to be with blind rivets. Don't really want to put a bunch of extra holes in the skin for this experiment. Any advice or pictures would be appreciated. =20 Thanks, =20 Bobby Hughes RV-10 -- Homepage: http://www.flyrotary.com/ Archive and UnSub: http://mail.lancaironline.net:81/lists/flyrotary/List.html =09 =09 ------_=_NextPart_001_01CA1C7E.56FFA232 Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable

Thanks for the input everyone. The front of = the muffler=20 can be supported from the motor mount. The rear muffler mount is the = dilemma. I=20 hate the idea of an external doubler but I think it really needs=20 one.

Bobby

From: Rotary motors in aircraft=20 [mailto:flyrotary@lancaironline.net] On Behalf Of Tracy=20 Crook
Sent: Thursday, August 13, 2009 12:10 PM
To: = Rotary=20 motors in aircraft
Subject: [FlyRotary] Re: Moving muffler to=20 belly

Mine is less than 1" from the belly to keep it in the = turbulent=20 slipstream behind the cooling exit and avoid drag. A .007" thick = piece of=20 SS heat shield is riveted to the belly in this area. The SS = expands when=20 heated and creates its own airgap for insulation.

Tracy =

On Thu, Aug 13, 2009 at 10:08 AM, Bobby J. = Hughes <bhughes@qnsi.net>=20 wrote:

I've had the plane down for a = few weeks=20 making several changes. I would like to move my muffler out of the = cowl to the=20 airframe belly. How much space should I leave between the top of the = muffler=20 and bottom skin? My exit fairing hangs down about 5" below the = airframe. What=20 have others done for heat shielding \ paint protection? Since the = floor=20 pans are installed any riveting will have to be with blind rivets. = Don't=20 really want to put a bunch of extra holes in the skin for this = experiment. Any=20 advice or pictures would be appreciated.

Thanks,

Bobby = Hughes

RV-10

--
Homepage: = http://www.flyrotary.com/
Archive and UnSub: = http://mail.lancaironline.net:81/lists/flyrotary/List.htm= l

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