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Message-ID: <1c23473f050911093580e867@mail.gmail.com>
Date: Sun, 11 Sep 2005 09:35:41 -0700
From: David Leonard <wdleonard@gmail.com>
Reply-To: wdleonard@gmail.com
To: Rotary motors in aircraft <flyrotary@lancaironline.net>
Subject: Re: [FlyRotary] Re: mystery inflight fuel pressure drop
In-Reply-To: <list-718447@logan.com>
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References: <list-718447@logan.com>

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IMHO, if you want to just monitor one or the other, return is better.
 Dave Leonard

 On 9/11/05, David Carter <dcarter@datarecall.net> wrote:=20
>=20
> Seems like having two fuel flow sensors and indications (FF being burned,=
=20
> and FF being returned) is a really important "discovery" or "insight" for=
=20
> discovering failing fuel pumps or accumulation of debris. I'd never have=
=20
> thought of monitoring "return" FF until this pump failure experience came=
=20
> up.
>  David
>  ----- Original Message ----- *From:* David Leonard <wdleonard@gmail.com>=
=20
> *To:* Rotary motors in aircraft <flyrotary@lancaironline.net>=20
>  *Sent:* Sunday, September 11, 2005 9:24 AM
> *Subject:* [FlyRotary] Re: mystery inflight fuel pressure drop
> =20
>  Perry,=20
> Kelly is right. one of my walbo pumps just went bad but it was very=20
> intermittent. It was a lot more obvious by watching the fuel flow.
>  Ed lists all the other possible causes.
>=20
>=20
> --=20
> Dave Leonard
> Turbo Rotary RV-6 N4VY
> http://members.aol.com/_ht_a/rotaryroster/index.html
> http://members.aol.com/_ht_a/vp4skydoc/index.html=20
>  On 9/11/05, Kelly Troyer <keltro@att.net> wrote:=20
> >=20
> >  Perry,
> >  Dave Leonard had similar issue recently.........Was pump going bad !!
> > --
> > Kelly Troyer=20
> > Dyke Delta/13B/RD1C/EC2=20
> >=20
> >=20
> >=20
> >=20


--=20
Dave Leonard
Turbo Rotary RV-6 N4VY
http://members.aol.com/_ht_a/rotaryroster/index.html
http://members.aol.com/_ht_a/vp4skydoc/index.html

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<div>IMHO, if you want to just monitor one or the other, return is better.<=
/div>
<div>&nbsp;</div>
<div>Dave Leonard<br><br>&nbsp;</div>
<div><span class=3D"gmail_quote">On 9/11/05, <b class=3D"gmail_sendername">=
David Carter</b> &lt;<a href=3D"mailto:dcarter@datarecall.net">dcarter@data=
recall.net</a>&gt; wrote:</span>
<blockquote class=3D"gmail_quote" style=3D"PADDING-LEFT: 1ex; MARGIN: 0px 0=
px 0px 0.8ex; BORDER-LEFT: #ccc 1px solid">
<div><font face=3D"Arial" size=3D"2">Seems like having two fuel flow sensor=
s and indications (FF being burned, and FF being returned) is a really impo=
rtant &quot;discovery&quot; or &quot;insight&quot; for discovering failing =
fuel pumps or accumulation of debris.&nbsp; I'd never have thought of monit=
oring &quot;return&quot; FF until this pump failure experience came up.
</font></div><span class=3D"sg">
<div><font face=3D"Arial" size=3D"2"></font>&nbsp;</div>
<div><font face=3D"Arial" size=3D"2">David</font></div>
<div><font face=3D"Arial" size=3D"2"></font>&nbsp;</div></span>
<div style=3D"FONT: 10pt arial"><span class=3D"q">----- Original Message --=
---=20
<div style=3D"BACKGROUND: #e4e4e4"><b>From:</b> <a title=3D"wdleonard@gmail=
.com" onclick=3D"return top.js.OpenExtLink(window,event,this)" href=3D"mail=
to:wdleonard@gmail.com" target=3D"_blank">David Leonard</a> </div>
<div><b>To:</b> <a title=3D"flyrotary@lancaironline.net" onclick=3D"return =
top.js.OpenExtLink(window,event,this)" href=3D"mailto:flyrotary@lancaironli=
ne.net" target=3D"_blank">Rotary motors in aircraft</a> </div></span>
<div><span class=3D"e" id=3D"q_1064605d6cfaee13_4">
<div><b>Sent:</b> Sunday, September 11, 2005 9:24 AM</div>
<div><b>Subject:</b> [FlyRotary] Re: mystery inflight fuel pressure drop</d=
iv></span></div></div>
<div><span class=3D"e" id=3D"q_1064605d6cfaee13_6">
<div><br>&nbsp;</div>
<div>Perry, </div>
<div>Kelly is right.&nbsp; one of my walbo pumps just went bad but it was v=
ery intermittent.&nbsp; It was a lot more obvious by watching the fuel flow=
.</div>
<div>&nbsp;</div>
<div>Ed lists all the other possible causes.</div>
<div><br><br>-- <br>Dave Leonard<br>Turbo Rotary RV-6 N4VY<br><a onclick=3D=
"return top.js.OpenExtLink(window,event,this)" href=3D"http://members.aol.c=
om/_ht_a/rotaryroster/index.html" target=3D"_blank">http://members.aol.com/=
_ht_a/rotaryroster/index.html
</a><br><a onclick=3D"return top.js.OpenExtLink(window,event,this)" href=3D=
"http://members.aol.com/_ht_a/vp4skydoc/index.html" target=3D"_blank">http:=
//members.aol.com/_ht_a/vp4skydoc/index.html</a> <br>&nbsp;</div>
<div><span class=3D"gmail_quote">On 9/11/05, <b class=3D"gmail_sendername">=
Kelly Troyer</b> &lt;<a onclick=3D"return top.js.OpenExtLink(window,event,t=
his)" href=3D"mailto:keltro@att.net" target=3D"_blank">keltro@att.net</a>&g=
t; wrote:
</span>=20
<blockquote class=3D"gmail_quote" style=3D"PADDING-LEFT: 1ex; MARGIN: 0px 0=
px 0px 0.8ex; BORDER-LEFT: #ccc 1px solid">
<div></div>
<div>Perry,</div>
<div>&nbsp;&nbsp;&nbsp; Dave Leonard had similar issue recently.........Was=
 pump going bad !!</div>
<div>--<br>Kelly Troyer <br>Dyke Delta/13B/RD1C/EC2 <br><br><br><br>&nbsp;<=
/div></blockquote></div></span></div></blockquote></div><br><br clear=3D"al=
l"><br>-- <br>Dave Leonard<br>Turbo Rotary RV-6 N4VY<br><a href=3D"http://m=
embers.aol.com/_ht_a/rotaryroster/index.html">
http://members.aol.com/_ht_a/rotaryroster/index.html</a><br><a href=3D"http=
://members.aol.com/_ht_a/vp4skydoc/index.html">http://members.aol.com/_ht_a=
/vp4skydoc/index.html</a>=20

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