Old School Model Works GHOST Construction Manual page 11

surfaces of each DH1. Carefully
align them, weight them down
and allow the glue to cure to form
a solid, one-piece dihedral brace.
Make sure these parts are perfectly
aligned and hopefully one of the
two sides will show the etched
center line, as shown here, but it's
not a problem it is doesn't show - you can draw your own centerline
with some measuring, some creative penciling and a straight edge.
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Step 60 - Wing Assembly (DH1 test fi t)
Locate the DH1 assembly, WH1 from LP1, and the two wing halves.
There is a possibility that you'll have to sand DH1 to allow it to
fi t properly into the box you've made in each wing. Test fi t DH1
into each wing half, but don't JAM it in. Make notes on where
the DH1 might get stuck. Take some time test fi tting and sanding
DH1 as necessary to get a good fi t in both wing halves. Don't
take off too much, too fast. Carefully sand as necessary to make
sure everything fi ts properly and the root ribs in each wing half are
touching along their entire length when assembled into a single
wing. Take your time and get a good fi t that doesn't require a
lot of force.
Remember you may also have to fi le inside the boxes built into
each wing half to get that perfect fi t. Make sure each box is smooth
and DH1 doesn't catch on any extra glue.
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Step 61 - Wing Assembly (join wing halves)
Test fi t the wing halves together one last time and sand as necessary
for a good fi t. After test fi tting, now it's time for the big one - joining
the wing halves together into a single wing.
To do this, you'll need both wing halves, the DH1 and locate WH1
from LP1.
You'll join the wing halves permanently with 30 minute epoxy.
Remove the dihedral brace and apply the epoxy into the pockets in
each wing half and also coat the faces of each root rib.
Slide all the dihedral brace into one of the wing halves and you'll
also slide WH1 into place, making sure it's tabs fi t into the pre-cut
slot in R2.
Now slide remaining wing half in place. Using a couple of clamps
(or tape), hold wing halves fi rmly together. Wipe off any excess
epoxy and remove the clamps only after the epoxy has fully cured.
Remember, any twist in the alignment of the panels cannot be
fi xed after the epoxy cures and will lead to a poor fl ying model.
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Step 62 - Wing Assembly (WH4, WH5) Step 62 - Wing Assembly (WH4, WH5)
Locate WH4 from LP4, and both WH5s from Locate WH4 from LP4, and both WH5s from
LP1 and LP2. The WH5s are glued to
either side of the WH4, making a sandwich
of sorts. But unlike most sandwiches
you've made (or eaten) in your life, this
one needs to be perfectly aligned - with
no condiments running into the pre-cut holes. And by condiments,
I mean glue.
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Step 63 - Wing Assembly (WH2, WH3)
Locate WH3 from LP1. It is glued to the
bottom of the WH4/5 assembly, making sure
it pushed up against the fl at surface - (the tabs
are pushed all the way into WH3). Then do
the same for attaching WH2 (not shown here).
Construction Manual Construction Manual
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Step 64 - Wing Assembly (dowels)
Locate the 1/4" dowel from the hardware
bag. Measure and cut two 1-3/4" lengths
that you'll use as the wing-hold pegs.
Before gluing them in, round the ends of
each one, either by hand, or do it like we
do - lightly chuck them up in a drill and
spin it like a little lathe. Use sandpaper to
quickly round off one end, then the other.
Once rounded off, insert the dowels into
the WH3/4/5 assembly as pictured here.
On one side, the dowels should stick out
about a 1/8" or so, then the other side is
where the bulk of the dowels will be.
It is crucial that you glue these dowels
so they are perpendicular to the WH3/4/5 assembly - and in
line with each other. This will make mounting the wing quite a bit
easier later on.
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Step 65 - Wing Assembly (WH assembly)
Now you can glue the
completed
into the bottom of the wing -
into WH1 you installed when
joining the wings. Test fi t it
fi rst, making sure that it clears
the sheeting.
Then when you're satisfi ed,
glue it in place, making sure it is completely inserted into WH1 and
that both dowels stick out past the leading edge of the wing.
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Step 66 - Wing Assembly (WH assembly)
Use some of the scrap balsa you
have to fi ll in the areas on each
side of the WH assembly as we've
done here. It might not come out
to the perfect level of the wing
sheeting, but it's better to be a
little thicker and sand it off later,
than be a bit short and have dips
in the sheeting that show after you cover the wing.
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Step 67 - Wing Assembly (WH6)
Locate both WH6s from LP9. These
are glued on wing's top surface, along
the trailing edge, on each side of the
centerline.
PLEASE PAY ATTENTION TO THE
ORIENTATION OF THESE PIECES - the
longer edge should be against the centerline, and the shorter
edge along the trailing edge.
Glue these in place, keeping glue out pre-cut hole area.
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Step 68 - Wing Assembly (ailerons)
Locate both leftover lengths of 5/16" x 1-1/4" tapered balsa sticks.
These should now be trimmed to form the ailerons. To easily get
the proper length, grab a piece of scrap 3/32" balsa (from BP3-6).
Use it as a spacer between the tapered stock already attached to
the wing, and to the edge of the aileron strips. Move to the outer
edge and mark the balsa strip where it should be cut. Hopefully
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WH assembly
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