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 6.0c1) with ESMTP id 5707114 for flyrotary@lancaironline.net; Mon, 13 Aug 2012 16:57:05 -0400 Received-SPF: none receiver=logan.com; client-ip=66.219.56.245; envelope-from=bhughes@qnsi.net Return-Receipt-To: "Bobby J. Hughes" MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----_=_NextPart_001_01CD7996.1D7D47A0" Subject: Fuel Hose - Teflon/ PTFE Disposition-Notification-To: "Bobby J. Hughes" Content-class: urn:content-classes:message Date: Mon, 13 Aug 2012 15:56:30 -0500 X-MimeOLE: Produced By Microsoft Exchange V6.5 Message-ID: <74120FDE88CAFE4DBDA8814BCE20A3F342F2AF@qnsi-mail.qnsi.net> X-MS-Has-Attach: X-MS-TNEF-Correlator: Thread-Topic: Fuel Hose - Teflon/ PTFE Thread-Index: Ac15lh0yN7RDmz+mSCaQjDH7394kKw== From: "Bobby J. Hughes" To: "Rotary motors in aircraft" This is a multi-part message in MIME format. ------_=_NextPart_001_01CD7996.1D7D47A0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable The last couple of years I have smelled fuel when first opening my aircraft doors. The smell had grown stronger over time. Once the smell had cleared it didn't return for a day or two. I have been through two conditional inspections and one additional inspection of just the fuel system. No evidence of leaks for loose fittings was ever found. Earlier in the year Finn reported a leaking fuel line and possible ethanol compatibility issues with the braded rubber lines most of us are using. Searching the automotive new groups confirmed this to be a new and common problem. One frequently mentioned complaint was a fuel smell in garages. Some reported the smell in as little as two weeks after installing new hoses. =20 =20 I replaced all my hose with braded PTFE and it appears to have eliminated the problem. I ordered the hose and fittings from Pegasus Racing. 811 PTFE hose and 811 forged fittings. The assembly was basically the same as other braded hoses with an additional two full turns at the end.=20 =20 Bobby Hughes RV10 =20 =20 =20 =20 ------_=_NextPart_001_01CD7996.1D7D47A0 Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable

The last = couple of years I have smelled fuel when first opening my aircraft = doors. The smell had grown stronger over time. Once the smell had = cleared it didn’t return for a day or two. I have been through two = conditional inspections and one additional inspection of just the fuel = system. No evidence of leaks for loose fittings was ever found.  = Earlier in the year Finn reported a leaking fuel line and possible = ethanol compatibility issues with the braded rubber lines most of us are = using. Searching the automotive new groups confirmed this to be a new = and common problem. One frequently mentioned complaint was a fuel smell = in garages. Some reported the smell in as little as two weeks after = installing new hoses. 

 

I replaced = all my hose with braded PTFE and it appears to have eliminated the = problem. I ordered the hose and fittings from Pegasus Racing.  811 = PTFE hose and 811 forged fittings. The assembly was basically the same = as other braded hoses with an additional two full turns at the end. =

 

Bobby Hughes

RV10

 

 

 

 

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