X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from cdptpa-omtalb.mail.rr.com ([75.180.132.120] verified) by logan.com (CommuniGate Pro SMTP 6.0.8) with ESMTP id 6702800 for flyrotary@lancaironline.net; Sat, 25 Jan 2014 20:02:15 -0500 Received-SPF: pass receiver=logan.com; client-ip=75.180.132.120; envelope-from=eanderson@carolina.rr.com Return-Path: X-Authority-Analysis: v=2.0 cv=GMaK45xK c=1 sm=0 a=8784VxN1RgZhBaSzA3ibpA==:17 a=oy3Of1nQACoA:10 a=05ChyHeVI94A:10 a=KWPSR_H0u7wA:10 a=ayC55rCoAAAA:8 a=KGjhK52YXX0A:10 a=IDaqyO3QoeQA:10 a=arxwEM4EAAAA:8 a=r1ClD_H3AAAA:8 a=3oc9M9_CAAAA:8 a=oCcaPWc0AAAA:8 a=v2eXcs7b4ixUym-mZYQA:9 a=QEXdDO2ut3YA:10 a=U8Ie8EnqySEA:10 a=pGLkceISAAAA:8 a=Ia-xEzejAAAA:8 a=eNkA9w0r6oBUiQsF8_IA:9 a=_W_S_7VecoQA:10 a=MSl-tDqOz04A:10 a=EzXvWhQp4_cA:10 a=-3nCke8Bgu31OfFo:21 a=8784VxN1RgZhBaSzA3ibpA==:117 X-Cloudmark-Score: 0 X-Authenticated-User: X-Originating-IP: 174.110.171.30 Received: from [174.110.171.30] ([174.110.171.30:60573] helo=EdPC) by cdptpa-oedge01.mail.rr.com (envelope-from ) (ecelerity 2.2.3.46 r()) with ESMTP id DF/87-00728-67E54E25; Sun, 26 Jan 2014 01:01:42 +0000 Message-ID: From: "Ed Anderson" To: "Rotary motors in aircraft" References: In-Reply-To: Subject: Re: [FlyRotary] Re: Exhaust Leak at Turbo Outlet Flange Date: Sat, 25 Jan 2014 20:00:48 -0500 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0035_01CF1A08.23E1E0E0" X-Priority: 3 X-MSMail-Priority: Normal Importance: Normal X-Mailer: Microsoft Windows Live Mail 16.4.3508.205 X-MimeOLE: Produced By Microsoft MimeOLE V16.4.3508.205 This is a multi-part message in MIME format. ------=_NextPart_000_0035_01CF1A08.23E1E0E0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Clear thinking and quick action was clearly key to the safe outcome. = Glad you made it down safe and sound, Christian. Ed Edward L. Anderson Anderson Electronic Enterprises LLC 305 Reefton Road Weddington, NC 28104 http://www.andersonee.com http://www.eicommander.com From: Christamarmc=20 Sent: Saturday, January 25, 2014 4:44 PM To: Rotary motors in aircraft=20 Subject: [FlyRotary] Re: Exhaust Leak at Turbo Outlet Flange Thanks for keeping us all informed , helps us all to make sure we look = for often simple overlooked areas. Cheers Christian=20 Renises 13 b rv7 Sent from my iPad On 26/01/2014, at 3:17 AM, shipchief@aol.com wrote: During the 8th flight of my RV8 with 13B Turbo, I experienced an = exhaust leak at the turbo exhaust flange. I mistakenly used brass = exhaust nuts which are twice as tall as regular nuts. They work great = on most engines. I should have know better, as the temperature at the = turbo outlet, under the insulation is much higher. The brass nuts softened and deformed into a flange face at the washer! = Once the tension was gone, the heat & vibration did the rest. The exhaust gasket blew where the gap was widest, at the top. The escaping heat burned thru the insulating jacket and the stick on = reflective aluminum. Then the fiberglass cowl charred, I smelled that! I was close to my destination, and high, so I was able to pull off the = power, put down the nosed and get on the ground without incident. I'm disassembling it now, looks like I need 4 high temperature lock = nuts and a TO-4 exhaust flange gasket. I should review and improve the = insulation over the turbine housing. Also I need to repair the charred = area of the cowl, which might be in the form of an aluminum access = hatch. No virus found in this message. Checked by AVG - www.avg.com Version: 2013.0.3462 / Virus Database: 3681/7032 - Release Date: = 01/25/14 ------=_NextPart_000_0035_01CF1A08.23E1E0E0 Content-Type: text/html; charset="utf-8" Content-Transfer-Encoding: quoted-printable

Clear thinking and quick action was clearly key to the safe = outcome. =20 Glad you made it down safe and sound, Christian.

Ed

Edward L.=20 Anderson
Anderson Electronic Enterprises LLC
305 Reefton=20 Road
Weddington, NC=20 28104
http://www.andersonee.com
http://www.eicommander.com

From: Christamarmc

Sent: Saturday, January 25, 2014 4:44 PM

To: Rotary motors in = aircraft

Subject: [FlyRotary] Re: Exhaust Leak at Turbo Outlet=20 Flange

Thanks for keeping us all informed , helps us all to make sure we = look for=20 often simple overlooked areas.

Cheers

Christian

Renises 13 b rv7

Sent from my iPad

On 26/01/2014, at 3:17 AM, shipchief@aol.com = wrote:

During the 8th = flight of my=20 RV8 with 13B Turbo, I experienced an exhaust leak at the turbo exhaust = flange.=20 I mistakenly used brass exhaust nuts which are twice as tall as = regular=20 nuts. They work great on most engines. I should have know better, as = the=20 temperature at the turbo outlet, under the insulation is much=20 higher.

The brass nuts softened and deformed into a flange face at the = washer!=20 Once the tension was gone, the heat & vibration did the = rest.

The exhaust gasket blew where the gap was widest, at the = top.

The escaping heat burned thru the insulating jacket and the stick = on=20 reflective aluminum. Then the fiberglass cowl charred, I smelled = that!

I was close to my destination, and high, so I was able to pull = off the=20 power, put down the nosed and get on the ground without = incident.

I'm disassembling it now, looks like I need 4 high temperature = lock nuts=20 and a TO-4 exhaust flange gasket. I should review and improve the = insulation=20 over the turbine housing. Also I need to repair the charred area of = the cowl,=20 which might be in the form of an aluminum access=20 hatch.

No virus found in this=20 message.
Checked by AVG - www.avg.com
Version: 2013.0.3462 / = Virus=20 Database: 3681/7032 - Release Date: = 01/25/14

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