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Date: Wed, 13 Jun 2012 18:36:24 -0400
Message-ID: <CAA9qwZuokCVAYhgsB7SELiJ55fm8kpMMJ2t2C8ZFbKJ8azR7gw@mail.gmail.com>
Subject: Re: [FlyRotary] Re: Fuel presure question.
From: Tracy <rwstracy@gmail.com>
To: Rotary motors in aircraft <flyrotary@lancaironline.net>
Content-Type: multipart/alternative; boundary=f46d044287f28feaa504c26236cd

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My Bad, you couldn't see my tongue-in-cheek.  I was pretty sure it would
stop the engine.   The serious part of the question was what happens to the
pressure reading on the monitor.  If the reading goes down, the problem is
probably the regulator and not instrumentation.  And even then it may not
be a problem.  the regulator may being pushed beyond its design maximum
flow rate.


Tracy


On Wed, Jun 13, 2012 at 6:27 PM, <hoursaway1@comcast.net> wrote:

> Eng. stops when both are shut off at same time or one after the other,
> will check again tonight.   David
>
> ------------------------------
> *From: *"Tracy" <rwstracy@gmail.com>
> *To: *"Rotary motors in aircraft" <flyrotary@lancaironline.net>
> *Sent: *Wednesday, June 13, 2012 8:29:41 AM
> *Subject: *[FlyRotary] Re: Fuel presure question.
>
> Hmmmm...  Mine goes up about a pound when I switch on the second pump.
>  What happens when you turn both off?
>
> Tracy
>
> Sent from my iPad
>
> On Jun 12, 2012, at 7:11 PM, hoursaway1@comcast.net wrote:
>
>   Question about fuel pressure indications, at fast idle 2200 RPM, fuel
> pressure is 42 PSI on EM2, if I switch on the back-up pump with the primary
> pump the pressure drops to 35 PSI, can here both pumps running, if I switch
> off either pump pressure goes back to 42 PSI.  My system is 13B, stock red
> injectors all four, pressure regulator is stock Mazda on the end of fuel
> rail with vacume connection from dynamic chamber.  Thanks,  David R. Cook
> RV6A Rotary.
>
>

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My Bad, you couldn&#39;t see my tongue-in-cheek.=A0 I was pretty sure it wo=
uld stop the engine.=A0=A0 The serious part of the question was what happen=
s to the pressure reading on the monitor.=A0 If the reading goes down, the =
problem is probably the regulator and not instrumentation.=A0 And even then=
 it may not be a problem.=A0 the regulator may being pushed beyond its desi=
gn maximum flow rate.<br>
<br><br>Tracy<br>=A0<br><br><div class=3D"gmail_quote">On Wed, Jun 13, 2012=
 at 6:27 PM,  <span dir=3D"ltr">&lt;<a href=3D"mailto:hoursaway1@comcast.ne=
t" target=3D"_blank">hoursaway1@comcast.net</a>&gt;</span> wrote:<br><block=
quote class=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;border-left:1px #ccc=
 solid;padding-left:1ex">
<div><div style=3D"font-size:12pt;font-family:Arial">Eng. stops when both a=
re shut off at same time or one after the other, will check again tonight.=
=A0=A0 David<br><br>
<hr>
<b>From: </b>&quot;Tracy&quot; &lt;<a href=3D"mailto:rwstracy@gmail.com" ta=
rget=3D"_blank">rwstracy@gmail.com</a>&gt;<br><b>To: </b>&quot;Rotary motor=
s in aircraft&quot; &lt;<a href=3D"mailto:flyrotary@lancaironline.net" targ=
et=3D"_blank">flyrotary@lancaironline.net</a>&gt;<br>
<b>Sent: </b>Wednesday, June 13, 2012 8:29:41 AM<br><b>Subject: </b>[FlyRot=
ary] Re: Fuel presure question.<br><br>
<div>Hmmmm... =A0Mine goes up about a pound when I switch on the second pum=
p. =A0What happens when you turn both off?</div>
<div><br></div>
<div>Tracy<br><br>Sent from my iPad</div>
<div><br>On Jun 12, 2012, at 7:11 PM, <a href=3D"mailto:hoursaway1@comcast.=
net" target=3D"_blank">hoursaway1@comcast.net</a> wrote:<br><br></div>
<div></div>
<blockquote>
<div>
<div style=3D"font-size:12pt;font-family:Arial">
<p>Question about fuel pressure indications, at fast idle 2200 RPM, fuel pr=
essure is 42 PSI on EM2, if I switch on the back-up pump with the primary p=
ump the pressure drops to 35 PSI, can here both pumps running, if I switch =
off either pump pressure goes back to 42 PSI.=A0 My system is 13B, stock re=
d injectors all four, pressure regulator is stock Mazda on the end of fuel =
rail with vacume connection from dynamic chamber.=A0 Thanks,=A0 David R. Co=
ok=A0 RV6A Rotary.</p>
</div></div></blockquote></div></div></blockquote></div><br>

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