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Message-ID: <1b4b137c1003281843u29fdb0bfq932909bb3a38d8f9@mail.gmail.com>
Subject: Re: [FlyRotary] Re: P-Port performance
From: Tracy Crook <tracy@rotaryaviation.com>
To: Rotary motors in aircraft <flyrotary@lancaironline.net>
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I don't have a wide band mixture monitor so my narrow band reads off the
bottom of the scale when I am aggressively leaned.  I'm guessing that it
might be as low as 17 - 19 to one.  I can lean more aggressively when
altitude is above 12,000 feet and my cruise rpm is above 5100 rpm.   That
was not the case on the flight that Charlie mentioned.  I think we would
have frozen to death at that altitude that day.  It was 12 deg. F at 4000.

If I could choose to pick the conditions for a lyc. - rotary economy
comparison it would be at 15,500 feet at 172 mph TAS.  I get around 30 MPG
in that condition.

Tracy

On Sun, Mar 28, 2010 at 9:02 PM, George Lendich <lendich@aanet.com.au>wrote:

>   Tracy,
> Something that would help with the fuel flow calculations is an
> approximation of your aggressive leaning - perhaps  a ratio of 20:1 or more?
> Charlie England stated your very economical with the fuel in a recent post
> and it prompted me to ask, how economical.
> TIA.
> George ( down under)
>
>
>

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I don&#39;t have a wide band mixture monitor so my narrow band reads off th=
e bottom of the scale when I am aggressively leaned.=A0 I&#39;m guessing th=
at it might be as low as 17 - 19 to one.=A0 I can lean more aggressively wh=
en altitude is above 12,000 feet and my cruise rpm is above 5100 rpm.=A0=A0=
 That was not the case on the flight that Charlie mentioned.=A0 I think we =
would have frozen to death at that altitude that day.=A0 It was 12 deg. F a=
t 4000.=A0 <br>
<br>If I could choose to pick the conditions for a lyc. - rotary economy co=
mparison it would be at 15,500 feet at 172 mph TAS.=A0 I get around 30 MPG =
in that condition.<br><br>Tracy =A0 <br><br><div class=3D"gmail_quote">On S=
un, Mar 28, 2010 at 9:02 PM, George Lendich <span dir=3D"ltr">&lt;<a href=
=3D"mailto:lendich@aanet.com.au">lendich@aanet.com.au</a>&gt;</span> wrote:=
<br>
<blockquote class=3D"gmail_quote" style=3D"margin: 0pt 0pt 0pt 0.8ex; borde=
r-left: 1px solid rgb(204, 204, 204); padding-left: 1ex;">



<div bgcolor=3D"#ffffff">
<div><font size=3D"2" face=3D"Arial">=A0Tracy,</font></div>
<div><font size=3D"2" face=3D"Arial">Something=A0that would=A0help with=20
the=A0fuel flow calculations is an approximation of your aggressive leaning=
 -=20
perhaps=A0 a ratio of 20:1 or more?</font></div>
<div><font size=3D"2" face=3D"Arial">Charlie England stated your very econo=
mical with=20
the fuel in a recent post and it prompted me to ask, how=20
economical.</font></div>
<div><font size=3D"2" face=3D"Arial">TIA.</font></div>
<div><font size=3D"2" face=3D"Arial">George ( down under)</font></div>
<div><font size=3D"2" face=3D"Arial"></font>=A0</div>
<div><font size=3D"2" face=3D"Arial">=A0</font>
<div style=3D"display: inline;"></div><font size=3D"2" face=3D"Arial"></fon=
t></div>

</div>
</blockquote></div><br><div style=3D"visibility: hidden; display: inline;" =
id=3D"avg_ls_inline_popup"></div><style type=3D"text/css">#avg_ls_inline_po=
pup {  position:absolute;  z-index:9999;  padding: 0px 0px;  margin-left: 0=
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