Mailing List flyrotary@lancaironline.net Message #50657
From: Tracy Crook <tracy@rotaryaviation.com>
Sender: <rwstracy@gmail.com>
Subject: Re: [FlyRotary] Re: P-Port performance
Date: Sun, 28 Mar 2010 21:43:27 -0400
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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