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Subject: Re: [LML] LNC2 Legacy Performance questions
From: Don Karich <donkarich@gmail.com>
X-Original-To: Lancair Mailing List <lml@lancaironline.net>
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I wouldn't trust any  Continental engines done by preformance. Lycon not
much better. Just my opinion

On Thu, Nov 11, 2010 at 10:20 AM, Craig Jimenez <jimenez.craig@gmail.com>wrote:

> 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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I wouldn&#39;t trust any=A0 Continental engines done by preformance. Lycon =
not much better. Just my opinion<br><br>
<div class=3D"gmail_quote">On Thu, Nov 11, 2010 at 10:20 AM, Craig Jimenez =
<span dir=3D"ltr">&lt;<a href=3D"mailto:jimenez.craig@gmail.com">jimenez.cr=
aig@gmail.com</a>&gt;</span> wrote:<br>
<blockquote style=3D"BORDER-LEFT: #ccc 1px solid; MARGIN: 0px 0px 0px 0.8ex=
; PADDING-LEFT: 1ex" class=3D"gmail_quote">
<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></blockquote></div><br>

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