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From: RWolf99@aol.com
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Date: Mon, 12 Jun 2000 19:24:06 EDT
Subject: LNC2 Seat Pan Aft Stop
To: lancair.list@olsusa.com
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I have been fitting the seat pans on my 360 and recall an earlier posting 
concerning loss of control authority when a seat pan slid aft a little bit, 
causing it to bind up on the control crossover weldment.  I would like to 
fashion some gizmo that prevents aft motion of the seat pan, yet permits easy 
removal.

It would appear to me that as weight is placed on the seat pan, and it flexes 
in response, that the aft edge of the seat pan slides back slightly on the 
fuselage floor. (Am I mistaken?  I did not look at this too closely.)  As a 
result, I'm imagining fixing the seat pan at the front edge, where it is 
retained by a 3-BID flange to the top of the main spar, rather than just 
screwing it down at the back.

I'm thinking of putting a small phenolic block on the top of the spar (where 
the seat pan has to be elevated 1/4 inch above the spar cap anyway -- use 
foam for most of it but have a chunk of phenolic at the end) and placing a 
pin through the 3-BID flange, the seat pan, and the phenolic block.  Of 
course, I would be very careful to avoid drilling thru the phenolic into the 
spar cap -- that would be bad.

Has anyone done anything better that they'd like to share?

- Rob Wolf


[The situation reported earlier was where the seat pan had slid aft
restricting the amount of up elevator available.  It seems to me
that keeping the seat pan from moving in either direction should be a
pretty high priority item and it will be interesting to learn of any
other approaches taken to keep it in one place.            <Marv>     ]

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