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From: "Bryan Wullner" <vonjet@gmail.com>
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Subject: Re: [LML] Re: Cowl rubbing
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I thought I'd share this info I found today.  We did a test with a Lancair
360 and pulled the top cowling off.   This airplane has the plenum top
cooling system and stock Lancair 360 cowlings.
We put clay all over the engine and mount to check clearances since this
airplane has about 90 hours on it with no problems in the cowl areas.  Here
are the results.

From Starter ring to cowl 5/16"
At the fwd point of the case just behind the flywheel 3/32"
Number 1 cylinder plug cover to to cowl - 1/8"
Engine mount on the dynafocal ring to top cowl 1/32"

All other areas where 1/4 inch or more.

Bryan



On Jan 19, 2008 6:17 AM, Peter Sokolowski <air.peter@googlemail.com> wrote:

> Hi,
>
> well - I can tell you that I have the same situation. My engine is an O360
> F1A6 with a forward governor and as I tried to match the spinner of my
> future MT prop with the cowling. I have recognized that the space between
> the cowling and this special high point of the forward crankcase is close to
> 0. I discussed this with my technician  and  the result is, that I have to
> build up  a special bulge.  Ugly - but  necessary for clearance purposes.
>
> BTW - what kind of engine do you have ?
>
> Best regards an good luck
>
> Peter
> LNC 360, 90% and 50% to go
>
>
>
> 2008/1/17, sbej < sbej@verizon.net>:
> >
> >  Pertaining to 360's:  have a fwd mount prop gov. and plenum top
> > cooling.  The problem is: Because of the fwd mount prop gov. there is a high
> > spot in the case.  You have to make a special bulge in the plenum top in
> > order for it to fit over the engine case.  Because of this The top cowl sit
> > right on top on the bulge in the plenum top at the fwd point where the prop
> > gov is.  There is no clearance at all here.  It has to sit right on it in
> > order to properly line up with the spinner.
> > Is this ok?
> >
> >
> >
>
>

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I thought I&#39;d share this info I found today.&nbsp; We did a test with a Lancair 360 and pulled the top cowling off.&nbsp;&nbsp; This airplane has the plenum top cooling system and stock Lancair 360 cowlings.&nbsp; <br>We put clay all over the engine and mount to check clearances since this airplane has about 90 hours on it with no problems in the cowl areas.&nbsp; Here are the results.
<br><br>From Starter ring to cowl 5/16&quot;<br>At the fwd point of the case just behind the flywheel 3/32&quot;<br>Number 1 cylinder plug cover to to cowl - 1/8&quot;<br>Engine mount on the dynafocal ring to top cowl 1/32&quot;
<br><br>All other areas where 1/4 inch or more.<br><br>Bryan<br><br><br><br><div class="gmail_quote">On Jan 19, 2008 6:17 AM, Peter Sokolowski &lt;<a href="mailto:air.peter@googlemail.com">air.peter@googlemail.com</a>&gt; wrote:
<br><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">Hi, <br><br>well - I can tell you that I have the same situation. My engine is an O360 F1A6 with a forward governor and as I tried to match the spinner of my future MT prop with the cowling. I have recognized that the space between the cowling and this special high point of the forward crankcase is close to 0. I discussed this with my technician&nbsp; and&nbsp; the result is, that I have to&nbsp; build up&nbsp; a special bulge.&nbsp; Ugly - but&nbsp; necessary for clearance purposes. 
<br><br>BTW - what kind of engine do you have ?<br><br>Best regards an good luck<br><br>Peter <br>LNC 360, 90% and 50% to go<br> <br><br><br><div><span class="gmail_quote">2008/1/17, sbej &lt;<a href="mailto:sbej@verizon.net" target="_blank">

sbej@verizon.net</a>&gt;:</span><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">





<div bgcolor="#ffffff">
<div><font face="Arial" size="2">Pertaining to 360&#39;s: &nbsp;have a fwd mount prop 
gov. and plenum top cooling.&nbsp; The problem is: Because of the fwd mount prop 
gov. there is a high spot in the case.&nbsp; You have to make a special bulge in 
the plenum top in order for it to fit over the engine case.&nbsp; Because of 
this The top cowl sit right on top on the bulge in the&nbsp;plenum top at the 
fwd point where the prop gov is.&nbsp; There is no clearance at all here.&nbsp; 
It has to sit right on it in order to properly line up with the 
spinner.&nbsp;</font></div>
<div><font face="Arial" size="2">Is this ok?<br><br>&nbsp; 
</font></div></div>
</blockquote></div><br>
</blockquote></div><br>

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