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From: "Al Gietzen" <ALVentures@cox.net>
To: "'Rotary motors in aircraft'" <flyrotary@lancaironline.net>
Subject: RE: [FlyRotary] Re: Vacuum Pulses
Date: Wed, 24 Sep 2008 06:38:04 -0800
Message-ID: <A8B653C9839D49E2B35FB964F63726E5@BigAl>
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=20

I am new at this engine running thing, having just done the third =
start/run
. I have some instrumentation, and am enclosing a plot of Manifold =
pressure
and Fuel pressure vs. time for the latest run. After letting it warm up =
at
~14 in MP , I started increasing the power, and you can see that the =
fuel
pressure increases with the MP.  Made one brief excursion to ~5900 rpm,
swinging a 76x76 prop.

All tests so far are with the cowl off, but the ducts are in place.

=20

Bill;

=20

Lookin' good.  It does seem that the fuel pressure is running a bit low, =
but
I guess it depends on your injectors.  Most are rated at a pressure of =
40
-43 psi., so when your MAP is 30, the fuel pressure is about 40 psi.  I =
set
my pressure a t 40 with engine off; and it then comes down into the low =
30's
when at idle.

=20

Al G


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style=3D'font-size:12.0pt'>&nbsp;</span></font></p>

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<p class=3DMsoNormal style=3D'margin-left:.5in'><font size=3D2 =
face=3DArial><span
style=3D'font-size:10.0pt;font-family:Arial'>I am new at this engine =
running
thing, having just done the third start/run . I have some =
instrumentation, and
am enclosing a plot of Manifold pressure and Fuel pressure vs. time for =
the
latest run. After letting it warm up at ~14 in MP , I started increasing =
the
power, and you can see that the fuel pressure increases with the =
MP.&nbsp; Made
one brief excursion to ~5900 rpm, swinging a 76x76 =
prop.</span></font></p>

</div>

<div>

<p class=3DMsoNormal style=3D'margin-left:.5in'><font size=3D2 =
face=3DArial><span
style=3D'font-size:10.0pt;font-family:Arial'>All tests so far are with =
the cowl
off, but the ducts are in place.</span></font></p>

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<blockquote style=3D'border:none;border-left:solid black =
1.5pt;padding:0in 0in 0in 3.0pt;
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style=3D'font-size:
10.0pt;font-family:Arial;color:blue'>&nbsp;</span></font></p>

<p class=3DMsoNormal><font size=3D2 color=3Dblue face=3DVerdana><span =
style=3D'font-size:
11.0pt;font-family:Verdana;color:blue'>Bill;</span></font></p>

<p class=3DMsoNormal><font size=3D2 color=3Dblue face=3DVerdana><span =
style=3D'font-size:
11.0pt;font-family:Verdana;color:blue'>&nbsp;</span></font></p>

<p class=3DMsoNormal><font size=3D2 color=3Dblue face=3DVerdana><span =
style=3D'font-size:
11.0pt;font-family:Verdana;color:blue'>Lookin&#8217; good.&nbsp; It does =
seem
that the fuel pressure is running a bit low, but I guess it depends on =
your
injectors. &nbsp;Most are rated at a pressure of 40 -43 psi., so when =
your MAP
is 30, the fuel pressure is about 40 psi.&nbsp; I set my pressure a t 40 =
with
engine off; and it then comes down into the low 30&#8217;s when at =
idle.</span></font></p>

<p class=3DMsoNormal><font size=3D2 color=3Dblue face=3DVerdana><span =
style=3D'font-size:
11.0pt;font-family:Verdana;color:blue'>&nbsp;</span></font></p>

<p class=3DMsoNormal><font size=3D2 color=3Dblue face=3DVerdana><span =
style=3D'font-size:
11.0pt;font-family:Verdana;color:blue'>Al G</span></font></p>

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