Great Planes Rapture 40 - GPMA0220 - Manual (Page 11)

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13. Test fit the elevators to the stabilizer with the joiner
wire. Make any adjustments necessary for a good fit.
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14. The same as was done for the rudder, bevel the
leading edge of both elevators. Make sure you can get 1/2"
[13mm] of both up and down elevator throw.
Set the elevators and rudder aside while building the wing.
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1. Use 30-minute epoxy to glue a 1/2" x 3/4" x 3/4" [13 x
19 x 19mm] maple landing gear block to the top of a 1/2"
x 3/4" x 6-1/4" [13 x 19 x 160mm] landing gear rail. The
block should be 3/8" [10mm] from one end of the rail and the
wood grain on the block should run the same direction as
the rail. Make another assembly the same way. Set the
assemblies aside and get to work on the rest of the wing
while the epoxy hardens.
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2. Cut 9" [230mm] from a 3/32" x 1/4" x 24" [2.4 x 6.4 x
610mm] balsa stick. Cut 2" [50mm] from a 1/4" x 1/4" x 30"
[6.4 x 6.4 x 760mm] balsa stick. Glue the 9" [230mm] stick on
top of one end of the 28" [710mm] stick to make the wing jig.
Start with the left panel so yours looks like the photos
the first time through.
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3. Position the left wing panel plan over your flat building
board and cover it with Plan Protector or wax paper.
Refer to this photo for the following three steps.
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4. Pin the wing jig over its location on the plan with the
ends protruding beyond the root and tip ribs. The end with the
9" [230mm] piece goes toward the root end of the wing panel.
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5. Inspect the four 3/8" x 3/8" x 30" [9.5 x 9.5 x 760mm]
balsa wing spars included with this kit. Note any warps that
may be present. If any of the spars are warped, pair them up
as shown in the sketch at the top to cancel out any warps.
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6. Pin one of the wing spars over its location on the
plan being certain, if necessary, to place it so any warp will
be cancelled out by the top spar. Note that the pins should
be inserted at an angle so they do not interfere with the top
spar when it is added later on. Also note that the tip of the
spar should “end” at the outer edge of rib R3 but the root
end of the spar may extend beyond the root rib.
Build the Wing Panels
BUILD THE WING
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