X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from imf22aec.mail.bellsouth.net ([205.152.59.70] verified) by logan.com (CommuniGate Pro SMTP 4.3.6) with ESMTP id 623548 for flyrotary@lancaironline.net; Wed, 03 Aug 2005 11:43:54 -0400 Received-SPF: pass receiver=logan.com; client-ip=205.152.59.70; envelope-from=sladerj@bellsouth.net Received: from ibm67aec.bellsouth.net ([65.8.218.171]) by imf22aec.mail.bellsouth.net with ESMTP id <20050803154309.QLTD3198.imf22aec.mail.bellsouth.net@ibm67aec.bellsouth.net> for ; Wed, 3 Aug 2005 11:43:09 -0400 Received: from JSLADE ([65.8.218.171]) by ibm67aec.bellsouth.net with ESMTP id <20050803154308.UAON23089.ibm67aec.bellsouth.net@JSLADE> for ; Wed, 3 Aug 2005 11:43:08 -0400 From: "John Slade" To: "Rotary motors in aircraft" Subject: RE: [FlyRotary] Re: Leaking fuel hose Date: Wed, 3 Aug 2005 11:43:04 -0400 Message-ID: MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_014A_01C59820.82683510" X-Priority: 3 (Normal) X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook IMO, Build 9.0.2416 (9.0.2910.0) X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1409 Importance: Normal In-Reply-To: This is a multi-part message in MIME format. ------=_NextPart_000_014A_01C59820.82683510 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit Ken, This hose is between the rail and the regulator, so it's at rail pressure - 40 PSI. John -----Original Message----- From: Rotary motors in aircraft [mailto:flyrotary@lancaironline.net]On Behalf Of kenpowell@comcast.net Sent: Wednesday, August 03, 2005 11:35 AM To: Rotary motors in aircraft Subject: [FlyRotary] Re: Leaking fuel hose John, Just curious - why would the 'return' hose leak have a 'stream' of gas? This sounds like the 'stream' was at least 12" long. If the hose is of sufficient size there should be virtually no pressure even though the volumn is high. Maybe this is a good chance to replace the hose and fitting with something larger. Ken Powell Bryant, Arkansas 501-847-4721 C150 / RV-4 -------------- Original message -------------- > > I thought about this some more. Remember all your EC-2 problems? Heavy > > arching like this on ground is just the sort of thing that kills off > > sensitive electronics. > > > > I'd put a volt meter between that hose, and a good aircraft ground, and > > watch it while cranking the engine, just to be sure it doesn't > > still want to > > be your engine ground. An ohm meter reading from the hose to ground would > > work as well, but not as directly. > > Yea. I've been thinking that too. We tested the ground to the engine and > found it a little weak, but I don't think it was THAT weak. I'll be checking > the ground path again later today. > > The point for others is that it's surprisingly EZ to damage an > "indestructible" hose with amps and get an intermittent leak that's hard to > find and could REALLY spoil you're day. A LongEZ driver (friend of Buly's) > from near here crashed & burned recently with an engine fire (Rotax engine). > That's what made me extra extra cautious. > > John > > > >> Homepage: http://www.flyrotary.com/ > >> Archive: http://lancaironline.net/lists/flyrotary/List.html ------=_NextPart_000_014A_01C59820.82683510 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable
Ken,
This=20 hose is between the rail and the regulator, so it's at rail pressure - = 40=20 PSI.
John
-----Original Message-----
From: Rotary motors in = aircraft=20 [mailto:flyrotary@lancaironline.net]On Behalf Of=20 kenpowell@comcast.net
Sent: Wednesday, August 03, 2005 = 11:35=20 AM
To: Rotary motors in aircraft
Subject: = [FlyRotary] Re:=20 Leaking fuel hose

John,
Just curious - why would the 'return' hose leak have a 'stream' = of=20 gas?  This sounds like the 'stream' was at least 12" long. =  If=20 the hose is of sufficient size there should be virtually no pressure = even=20 though the volumn is high.  Maybe this is a good chance to = replace the=20 hose and fitting with something larger.

Ken Powell
Bryant, Arkansas
501-847-4721
C150 /=20 RV-4
 
--------------=20 Original message --------------

> > I thought about = this some=20 more. Remember all your EC-2 problems? Heavy
> > arching = like this=20 on ground is just the sort of thing that kills off
> > = sensitive=20 electronics.
> >
> > I'd put a volt meter = between that=20 hose, and a good aircraft ground, and
> > watch it while = cranking=20 the engine, just to be sure it doesn't
> > still want to =
>=20 > be your engine ground. An ohm meter reading from the hose to = ground=20 would
> > work as well, but not as directly.
> =
>=20 Yea. I've been thinking that too. We tested the ground to the engine = and=20
> found it a little weak, but I don't think it was THAT weak. = I'll be=20 checking
> the ground path again later today.
> =
> The=20 point for others is that it's surprisingly EZ to damage an
>=20 "indestructible" hose with amps and get an intermittent leak that's = hard to=20
> find and could REALLY spoil you're day. A LongEZ driver = (friend of=20 Buly's)
> from near here crashed & burned recently with = an engine=20 fire (Rotax engine).
> That's what made me extra extra = cautious.=20
>
> John
>
>
> >> Homepage: = http://www.flyrotary.com/
> >> Archive:=20 http://lancaironline.net/lists/flyrotary/List.html=20
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