Message-ID: <3B97EB23.F1957BDD@mitchellair.com>
Date: Thu, 06 Sep 2001 16:31:15 -0500
From: Doug Raupp <dougr@mitchellair.com>
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To: Lancair Mail List <lancair.list@olsusa.com>
Subject: Wingtip Light Location
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Rob
Your question is very timely since I completed this installation last
weekend thusly:
First I made a cardboard template of the light assy base for positioning
of the unit and
and location of the necessary holes in the wing tip.  Previously, I had
installed  the wing tips with a  3 x 6 inch access panel in the lower
halves.  I placed the front edge of the  assy  10.5 inches  aft of the
wing leading edge. This locates it in the thickest portion of the wing
chord.  Tape to the wing tip the strobe lens and aluminum lens retainer
on a piece of 1/2 inch foam. This closely replicates the height of the
actual assy.  Climb in the cockpit to see if you can see the strobe
lens.  If you can't see the strobe, it can't flash in your eyes.
Using a  hole saw, drill, and dremel tool cut the necessary holes in the
wing tip.  Fitting the  assy with final trimming until fit is flush.
BTW. I drilled .the screw holes in the base plate to accept the same MS
screws used in the aileron hinges and use K1000-3 anchor nuts.
Anchor nuts are riveted to small 2 bid sections which are floxed in
position and held by screws while curing.  Put vaseline/axle
grease/cooking spray on screws for flox release.
Cover light assy base with release tape ( I can't work without duct
tape).  Apply micro/flox
mixture to bottom of assy base and to wing tip area. Install light assy
with screws and anchor nuts ( which are simultaneously being floxed in
position) for best fit.  Apply micro fillet around base.   My
installation required the most micro filling under the lower portion of
the light assy base.
Cure overnight and then remove light assy with release tape.  Using your
sanding board, sand to smooth flat surface.  You will probably have some
void areas in this base area - no problem.  Fill in the voids with micro
and cover the entire micro base with 1 bid.  Put peel ply over this for
best results.  After curing. remove peel ply, sand as needed.  Time to
run the wiring.
Visibility a 1/4 mile behind  the aircraft should not be a problem.
However,  I can't confirm that on my plane without cutting a hole in the
wall and cutting down 30+ trees in the woods behind my house.
Doug
LNC2

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