Great Planes Ultimate Biplane 40 Kit - GPMA0240 - Manual (Page 18)

D D 8. Remove the aileron from the wing. Mark the "bevel
to" lines and sand the LE of the aileron to a "V" as shown
on the plan.
D 9. Perform steps 1 through 7 to fit the second aileron
onto the wing.
Great looking wing! Guess what? You still have to build the
top wing.
We will build the fuselage next. It will be needed when you
assemble the top wing.
Completely read this section on Fuselage Preassembly and
test fit all the parts. These parts require the strength and
working time of 30-minute epoxy glue. This extra working
time will allow you to assemble most of the parts at once.
D 2. Glue the die-cut 1/16" birch plywood F-8A doubler to
the front of the die-cut 1/8" plywood former F-8B. Make
sure the slots in F-8A and F-8B are aligned.
D 3. After the epoxy has cured, drill 5/32" holes at the four
engine mount punch marks. Drill a 3/16" hole for the throttle
pushrod at the appropriate location. Drill two 1/4" fuel line
holes in the center of the engine mount holes.
D 1. Glue the three die-cut 1/8" ply firewall formers FF-1,
FF-2 and FF-3 together. Former FF-2 must be sandwiched
between FF-1 and FF-3. Make sure that the embossed
label on each former is facing forward and the top and side
edges are aligned. The bottom edges will be offset. Wipe
off any excess epoxy before it cures.
Note: If the formers are warped, clamping them together
will not remove the warp. It is best to clamp them to a flat
table or board.
D 4. Press four 6-32 blind nuts into the holes from the
back of the firewall. Tap the blind nuts with a hammer to
fully seat them and apply a few drops of thin CA around
each blind nut to secure them in position.
D 5. Drill 3/16" holes at the punch marks in the die-cut 1/8"
plywood fuselage formers F-10 and F-11.
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