>Miles,
>Would you mind elaborating how you placed these skids in relation to the
>normal glass skin work? Did you place them ontop? This sounds like a great
>idea though.
>>
>>Wingtip skids: 2"X6" inserted into bottom surface just outboard and forward
>>of the aileron, held in place with 3 screws in case it needs to be replaced.
>>Prevents the need to mix up more resin and paint when an outrigger fails to
>>perform. Sailplanes use wood, but as I stumbled across some titanium
stock.....
Actually doing them at the moment: 2 mm Titanium stock fabricated 8" X 2", 2
holes drilled and countersunk at the 1/3rd and 2/3rd stations, and a curve
rolled onto them (requires quite some force: Titanium has a very strong
"memory") a little greater than the curve of the wing where they are
located: the center then stands about 1mm proud. This is mated to thin ali
stock with a couple of rivnuts or captive nuts, and the ali plate glued to
the foam in a rebate cut out so that the fore and aft ends of the skid
plates are flush with the foam's surface. The foam is then tapered down over
about 1/2" to the ali plate to provide a transition for the glass skin which
is laid in top (ali plates are alodyned to provide good bonding, and the
rivnuts/captive nuts filled with wax to protect the threads during bonding.
The Titanium plates will then be waxed, placed in position over the wing
skin, and the faired to the wing bottom skin and tips with flox and filler:
this should leave the center portion just slightly proud. final assembly
will be with silicon RTV as an adhesive, a couple of CSK CRS screws to keep
it from falling out, and a coat of paint to hide it...
Hope this helps.
Miles
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