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Subject: LEG2 Legacy Performance questions
From: Craig Jimenez <jimenez.craig@gmail.com>
X-Original-To: Lancair List <lml@lancaironline.net>
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My bad, I initially sent this with the wrong identifier.  So that the thread
gets tagged correctly, here's the resend.

Thanks to Art, Dave, and Ed for informative replies.  Looks like true
airspeed holds up okay above 8,000; Ed shows 220 KTAS at 17,000'.  Will
watch the weight (of the airplane and pilot).

-
Craig

---------- Forwarded message ----------
From: Craig Jimenez <jimenez.craig@gmail.com>
Date: Thu, Nov 11, 2010 at 12:20 PM
Subject: [LML] LNC2 Legacy Performance questions
To: lml@lancaironline.net


I just joined the list and am considering buying a completed Legacy.  I make
frequent flights from Oklahoma City to Phoenix.  Our Mooney M20J has the
range to make the 720 nm trip non-stop with 1-hr reserve against 25-knot
headwinds.  I'd like to retain that capability, but upgrade speed from the
Mooney's 150-160 KTAS to 220 KTAS or better.

Questions:

I see a service ceiling of 18,000' published by Lancair.  Is that a legally
binding limitation?

What's time to climb SL to 12,000' and rate of climb through roughly 8, 12,
and 16,000' at max weight?

Are the following numbers credible for a 10:1 compression IO-550 with one
Light Speed Plasma ignition?
   KTAS   gph
   263   19.8 (flat out)
   253   17.1
   241   14.5
     :        :
   180    7.8

For a fairly stock IO-550N installation (e.g. 8.5:1) at 8,000', what numbers
would you see LOP, with and without electronic ignition?

Since much of my trip is above 8,000', what would the above performance
numbers be at 12, 16, and 18,000'?

Apart from keeping CHTs cool, what pilot and maintenance techniques will
increase engine life?

How many cylinders would I expect to replace in 2000 hours of flying careful
LOP?

Who does the best pre-purchase inspections?   Currently there appear to be
Legacys (Legacies?) for sale in ID, TX, etc.

What time-frame did you guys start seeing problems with Performance
Engines?  Any thoughts on Lycon engines?

--
Craig in Oklahoma City

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<div>My bad, I initially sent this with the wrong identifier.=A0 So that th=
e thread gets tagged correctly, here&#39;s the resend.</div>
<div>=A0</div>
<div>Thanks to Art, Dave, and Ed for informative replies.=A0=A0Looks like t=
rue airspeed holds up okay above 8,000; Ed shows 220 KTAS at 17,000&#39;.=
=A0 Will watch the weight (of the airplane and pilot).</div>
<div>=A0</div>
<div>-</div>
<div>Craig<br><br></div>
<div class=3D"gmail_quote">---------- Forwarded message ----------<br>From:=
 <b class=3D"gmail_sendername">Craig Jimenez</b> <span dir=3D"ltr">&lt;<a h=
ref=3D"mailto:jimenez.craig@gmail.com">jimenez.craig@gmail.com</a>&gt;</spa=
n><br>
Date: Thu, Nov 11, 2010 at 12:20 PM<br>Subject: [LML] LNC2 Legacy Performan=
ce questions<br>To: <a href=3D"mailto:lml@lancaironline.net">lml@lancaironl=
ine.net</a><br><br><br>
<div>I just joined the list and am considering buying a completed Legacy.=
=A0 I make frequent flights from Oklahoma City to Phoenix.=A0 Our Mooney M2=
0J has the range to make the 720 nm trip non-stop with 1-hr reserve against=
 25-knot headwinds.=A0 I&#39;d like to retain that capability, but upgrade =
speed from the Mooney&#39;s 150-160 KTAS to 220 KTAS or better.=A0=A0 </div=
>

<div>=A0</div>
<div>Questions:</div>
<div>=A0</div>
<div>I see a service ceiling of 18,000&#39; published by Lancair.=A0 Is tha=
t a legally binding limitation?=A0=A0 </div>
<div>=A0</div>
<div>What&#39;s time to climb SL to 12,000&#39; and rate of climb through r=
oughly 8, 12, and 16,000&#39; at max weight?</div>
<div>=A0</div>
<div>Are the following numbers credible for a 10:1 compression=A0IO-550 wit=
h one Light Speed Plasma ignition?=A0 </div>
<div>=A0 =A0KTAS=A0=A0 gph<br>=A0 =A0263=A0=A0 19.8 (flat out)<br>=A0 =A025=
3=A0=A0 17.1<br>=A0 =A0241=A0=A0 14.5<br>=A0=A0=A0 =A0:=A0=A0=A0=A0=A0 =A0 =
:<br>=A0 =A0180=A0=A0=A0 7.8</div>
<div>=A0</div>
<div>For a fairly stock IO-550N installation (e.g. 8.5:1) at 8,000&#39;, wh=
at numbers would you see LOP, with and without electronic ignition?</div>
<div>=A0</div>
<div>Since much of my trip is above 8,000&#39;, what would the above perfor=
mance numbers be at 12, 16, and 18,000&#39;?</div>
<div>=A0</div>
<div>Apart from keeping CHTs cool, what pilot and maintenance techniques wi=
ll increase engine life?</div>
<div>=A0</div>
<div>How many cylinders would I expect to replace in 2000 hours of flying c=
areful LOP?</div>
<div>=A0</div>
<div>Who does the best pre-purchase inspections?=A0=A0 Currently there appe=
ar to be Legacys (Legacies?) for sale in ID, TX, etc.</div>
<div>=A0</div>
<div>What time-frame did you guys start seeing problems with Performance En=
gines?=A0 Any thoughts on Lycon engines?</div>
<div>=A0</div><font color=3D"#888888">
<div>--</div>
<div>Craig in Oklahoma City</div>
<div>=A0</div>
<div>=A0</div></font></div><br>

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