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To: lml@lancaironline.net
Date: Mon, 27 Feb 2006 00:21:59 -0500
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From: "Bill&Sue" <5zq@cox.net>
References: <list-998524@logan.com>
Subject: Re: [LML] Re: LNC2 Cowl gap question
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Angier, the engine WILL sag and probably more than you think. We initially 
built ours so that the spinner was about 3/8 inch above the cowling. Over 
time, it sank down to where it was perfectly level...and kept sinking. 
After several hundred hours, we had to add a washer to the lower motor 
mounts to bring it back up. In addition to the sag, the engine moves around 
quite a bit, especially on startup and shutdown. I know what a perfectionist 
you are, but 0.175 inch sounds pretty close to me. Sure would lood good at 
the fly-ins but any contact would ruin it all.

Bill Harrelson
N5ZQ 320 1,150 hrs
N6ZQ  IV  5.3769%


> Ladies and gentlemen,
>
> I have set the gap between spinner and cowl to approximately .175"  all 
> around. I'd like to close in this gap a bit with an additional  1BID on 
> the face of the cowl. So, in everyone's opinion, how small a  gap would be 
> too small and result in eventual contact due to engine sag?
>
> Angier Ames
> N4ZQ