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Date: Sat, 6 Jul 2013 11:44:09 -0700
Message-ID: <CAOFHbnrwmUUnMTVBka94-u_0V8dwBE4oWy1=XwdcaawmizsO0Q@mail.gmail.com>
Subject: Re: [FlyRotary] Turbo boost indication
From: David Leonard <wdleonard@gmail.com>
To: Rotary motors in aircraft <flyrotary@lancaironline.net>
Content-Type: multipart/alternative; boundary=047d7b34419a5ff9be04e0dc32f3

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Simply convert 20 psi to Inches of Hg (its about 2 to 1 but not exactly)
and add it to 29.9.  So the MP should be about 69 inches, give or take
depending on losses and where in the system you measure.

I keep my plane less that 45 inches MP.  You have to be more rich and
skilled than me to go higher without detonation.


On Sat, Jul 6, 2013 at 11:14 AM, Patrick Panzera <editor@contactmagazine.com
> wrote:

> Friends,
>
> Hypothetical question.
> Let's say it's a standard day and I'm at sea level.
> I've installed a turbocharger and have also connected the stock automobile
> turbo boost gauge, along with my traditional manifold pressure gauge.
>
> I ground-run the engine to full throttle (where the MP would normally be
> reading 29.92- minus some efficiency loss) and the boost gauge is reading
> 20 psi.
>
> What should the MP indicator be reading?
>
> Thanks!
>
> Pat
>
>


-- 
David Leonard

Turbo Rotary RV-6 N4VY
http://N4VY.RotaryRoster.net
http://RotaryRoster.net

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<div dir=3D"ltr">Simply convert 20 psi to Inches of Hg (its about 2 to 1 bu=
t not exactly) and add it to 29.9. =A0So the MP should be about 69 inches, =
give or take depending on losses and where in the system you measure.<div><=
br>
</div><div>I keep my plane less that 45 inches MP. =A0You have to be more r=
ich and skilled than me to go higher without detonation.</div></div><div cl=
ass=3D"gmail_extra"><br><br><div class=3D"gmail_quote">On Sat, Jul 6, 2013 =
at 11:14 AM, Patrick Panzera <span dir=3D"ltr">&lt;<a href=3D"mailto:editor=
@contactmagazine.com" target=3D"_blank">editor@contactmagazine.com</a>&gt;<=
/span> wrote:<br>
<blockquote class=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;border-left:1p=
x #ccc solid;padding-left:1ex"><div dir=3D"ltr">Friends,<div><br><div>Hypot=
hetical question.=A0</div><div>Let&#39;s say it&#39;s a standard day and I&=
#39;m at sea level.</div>
<div>I&#39;ve installed a turbocharger and have also connected the stock au=
tomobile turbo boost gauge, along with my traditional manifold pressure gau=
ge.</div>
<div><br></div><div>I ground-run the engine to full throttle (where the MP =
would normally be reading 29.92- minus some efficiency loss) and the boost =
gauge is reading 20 psi.</div><div><br></div><div>What should the MP indica=
tor be reading?</div>

<div><br></div><div>Thanks!</div><div><br></div><div>Pat</div><div><br></di=
v></div></div>
</blockquote></div><br><br clear=3D"all"><div><br></div>-- <br>David Leonar=
d<br><br>Turbo Rotary RV-6 N4VY<br><a href=3D"http://N4VY.RotaryRoster.net"=
>http://N4VY.RotaryRoster.net</a><br><a href=3D"http://RotaryRoster.net">ht=
tp://RotaryRoster.net</a>
</div>

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