From: ReganRanch@aol.com
Message-ID: <97a634b8.36026d97@aol.com>
Date: Fri, 18 Sep 1998 10:26:31 EDT
To: lancair.list@olsusa.com
Subject: Landing Light
Mime-Version: 1.0

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Andres asks:
<< Does anyone have a schematic on placing the light along the opening in
front?
 if so any response will be appreciated. I wonder how it will affect airflow
 around the baffling system and how much reinforcement will be needed
 along the right side baffling, >>

The landing lights on my Lycoming powered IV start 1" below the cooling
inlets. One tip for any location is to make a Bondo mold of the area BEFORE
you cut the hole. Do this by placing packing tape on the area, globbing on a
wad of Bondo and back it up with a scrap of 3-core-3 or plywood. Once the hole
is cut, position the Bondo mold in place and scribe a line of the opening. The
mold can now be used to heat form some 1/8-inch Plexiglas for the lens. I used
a toaster oven. Be sure to preheat the lens at about 250 deg F before forming
to drive out the water absorbed by the acrylic.

Trim the leans about 3/16 oversize and bond in with clear silicone. I mounted
the lamp at the end of a 3 ply tube that was bonded directly to the cowling.
No further reinforcement was required.

Brent