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jeff(at)westcottpress.com
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 Posted: Sun Jan 15, 2006 1:25 pm Post subject: Lap Joint Top Wing Skins |
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The plans state that we can remove material from the inboard and
outboard top wing skins where they overlap in order to make a more
aesthetically pleasing joint. I'm concerned about ruining an
otherwise great pair of skins attempting to do this. Can anyone
discuss in detail why you chose to do this... or not to do this...
and how it went if you did?
Thanks,
Jeff Carpenter
40304
.. about to skin me some wings
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sfdarton(at)yahoo.com
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| Posted: Sun Jan 15, 2006 2:06 pm Post subject: Lap Joint Top Wing Skins |
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Jeff,
What I did was mark the overlap with a marker while
the skins are mounted together for match drilling on
the wing assembly (I still had the plastic on). Then I
cut off the plastic +1/8" as a guide with the
soldering iron, on the side that gets beveled only to
avoid confusion (leaving the plastic on the opposite
side). Then clamp a 1x8" pine board (with a sharp
edge) exactly under the edge of the wing skin (to
support it while sanding) and clamp the whole thing to
your bench so it doesn't move around. Then I used an
electric orbital Sander with 80 grit alum oxide paper,
hold the sander at a slight and consistent angle and
make a pass the full width of the skin and back. Hold
the edge of the sander along the edge of the plastic
and sand from that point to the edge. Always go the
full width so that a consistent amount is removed at
each point along the width. If I remember it took 10
or 20 minutes per skin. It doesn't go too fast and you
can see the (slow) progress quite easily.
Steve 40212
--- Jeff Carpenter <jeff(at)westcottpress.com> wrote:
| Quote: |
<jeff(at)westcottpress.com>
The plans state that we can remove material from the
inboard and
outboard top wing skins where they overlap in order
to make a more
aesthetically pleasing joint. I'm concerned about
ruining an
otherwise great pair of skins attempting to do this.
Can anyone
discuss in detail why you chose to do this... or not
to do this...
and how it went if you did?
Thanks,
Jeff Carpenter
40304
... about to skin me some wings
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jhasbrouck(at)woh.rr.com
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| Posted: Sun Jan 15, 2006 2:30 pm Post subject: Lap Joint Top Wing Skins |
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Jeff,
I did remove some material from the overlap but was'nt too aggressive.
Masked off the areas of the overlap and went at it. I used a combination of
files and Scotchbrite wheels. I did bend the outboard skin edge slightly
and ended up with a good result. Make sure to alodine or prime the area
since all the alclad will be stripped away. I probably thinned the inboard
skin a bit more than the outboard since it's thicker to start with. That
being said, I was even less aggressive on the bottom skins, slight working
with the Scotchbrite and a bend in the outboard edge, and they looked pretty
good also. Be careful how much you work the aluminum 'cause you will
stretch it a bit, particularly with the Scotchbrite wheels.
None of this is required of course, it's only for esthetics, and body
filler and high fill primer will give you a good final result when its
painted if you want the joint very smooth. I wouldn't get too crazy about
it.....john
John Hasbrouck
#40264 wings closed!
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Deems Davis
Joined: 09 Jan 2006
Posts: 925
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| Posted: Sun Jan 15, 2006 6:40 pm Post subject: Lap Joint Top Wing Skins |
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I used the tip from Tim Olsen's web site, and used an orbital sander. It
took a while, which is probably a good thing, to get the taper, I did
both the inboard and the outboard edges at the same time so as to be
able to cleco them togehter for test fits. (the 1st and 2nd fits were
not thin enough). Another Builder, Bill Curtis, ordered fresh .032
alclad and then copied the holes from Van's parts to make a single
seamless top skin.
Deems Davis # 406
Wings
http://deemsrv10.com/
Jeff Carpenter wrote:
| Quote: |
The plans state that we can remove material from the inboard and
outboard top wing skins where they overlap in order to make a more
aesthetically pleasing joint. I'm concerned about ruining an
otherwise great pair of skins attempting to do this. Can anyone
discuss in detail why you chose to do this... or not to do this...
and how it went if you did?
Thanks,
Jeff Carpenter
40304
... about to skin me some wings
http://www.matronics.com/Navigator?RV10-List
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