X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from sccrmhc13.comcast.net ([63.240.76.28] verified) by logan.com (CommuniGate Pro SMTP 4.3.6) with ESMTP id 623585 for flyrotary@lancaironline.net; Wed, 03 Aug 2005 12:17:57 -0400 Received-SPF: none receiver=logan.com; client-ip=63.240.76.28; envelope-from=kenpowell@comcast.net Received: from 204.127.205.142 (sccrwbc59.asp.att.net[204.127.205.159]) by comcast.net (sccrmhc13) with SMTP id <2005080316171201300dqp49e>; Wed, 3 Aug 2005 16:17:12 +0000 Received: from [68.51.45.41] by 204.127.205.142; Wed, 03 Aug 2005 16:17:11 +0000 From: kenpowell@comcast.net To: "Rotary motors in aircraft" Subject: Re: [FlyRotary] Re: Leaking fuel hose Date: Wed, 03 Aug 2005 16:17:11 +0000 Message-Id: <080320051617.29527.42F0EE070004F59400007357220700320104040A99019F020A05@comcast.net> X-Mailer: AT&T Message Center Version 1 (Dec 17 2004) X-Authenticated-Sender: a2VucG93ZWxsQGNvbWNhc3QubmV0 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="NextPart_Webmail_9m3u9jl4l_29527_1123085831_0" --NextPart_Webmail_9m3u9jl4l_29527_1123085831_0 Content-Type: text/plain Content-Transfer-Encoding: 8bit Ok, now I understand why the 'stream'. This is the kind of stuff that can drive you crazy!!! Ken Powell Bryant, Arkansas 501-847-4721 C150 / RV-4 -------------- Original message -------------- 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_Webmail_9m3u9jl4l_29527_1123085831_0 Content-Type: text/html Content-Transfer-Encoding: 8bit

Ok, now I understand why the 'stream'. This is the kind of stuff that can drive you crazy!!!

Ken Powell
Bryant, Arkansas
501-847-4721
C150 / RV-4

-------------- Original message --------------

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

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