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Message-ID: <1c23473f05060822021ac965e1@mail.gmail.com>
Date: Wed, 8 Jun 2005 22:02:12 -0700
From: David Leonard <wdleonard@gmail.com>
Reply-To: David Leonard <wdleonard@gmail.com>
To: Rotary motors in aircraft <flyrotary@lancaironline.net>
Subject: Re: [FlyRotary] Re: Very strange problem after installing new turbo
In-Reply-To: <list-989604@logan.com>
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On 6/8/05, David Staten <Dastaten@earthlink.net> wrote:=20
>=20
> Is the fuel pump capable of supporting the needed pressure ABOVE the boos=
t=20
> level? Perhaps this is a fuel pressure induced sag caused by too little=
=20
> "RELATIVE" pressure above the deck pressure.
>=20
> Just speculation, not based on experience
> Dave

 Another good guess. Yes, very capable. I demonstrated that to my self back=
=20
when my fuel pressure gauge was working properly they could support in=20
excess of 80 PSI with adequate flow. During the test today I tried running=
=20
just the 2nd pump, then both together. No change.=20
 Also, worked well in the past with the other turbo pulling 38-40"MAP.
 The more I think about, the detonation issue because of the advanced timin=
g=20
is starting to make some sense. Will go retard the timing and see what I=20
get.
 --=20
Dave Leonard (feeling a little retarded myself)
Turbo Rotary RV-6 N4VY
http://members.aol.com/_ht_a/rotaryroster/index.html
http://members.aol.com/vp4skydoc/index.html

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<br><br>
<div><span class=3D"gmail_quote">On 6/8/05, <b class=3D"gmail_sendername">D=
avid Staten</b> &lt;<a href=3D"mailto:Dastaten@earthlink.net">Dastaten@eart=
hlink.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">Is the fuel pump capable of supp=
orting the needed pressure ABOVE the boost level? Perhaps this is a fuel pr=
essure induced sag caused by too little &quot;RELATIVE&quot; pressure above=
 the deck pressure.
<br>&nbsp;<br>Just speculation, not based on experience<br>Dave</blockquote=
>
<div>&nbsp;</div>
<div>Another good guess.&nbsp; Yes, very capable.&nbsp; I demonstrated that=
 to my self back when my fuel pressure gauge was working properly they coul=
d support in excess of 80 PSI with adequate flow.&nbsp; During the test tod=
ay I tried running just the 2nd pump, then both together.&nbsp; No change.=
=20
</div>
<div>&nbsp;</div>
<div>Also, worked well in the past with the other turbo pulling 38-40&quot;=
MAP.</div>
<div>&nbsp;</div>
<div>The more I think about, the detonation issue because of the advanced t=
iming is starting to make some sense.&nbsp; Will go retard the timing and s=
ee what I get.</div>
<div>&nbsp;</div>
<div>-- <br>Dave Leonard (feeling a little retarded myself)<br>Turbo Rotary=
 RV-6 N4VY<br><a href=3D"http://members.aol.com/_ht_a/rotaryroster/index.ht=
ml">http://members.aol.com/_ht_a/rotaryroster/index.html</a><br><a href=3D"=
http://members.aol.com/vp4skydoc/index.html">
http://members.aol.com/vp4skydoc/index.html</a> </div></div>

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