Great Planes PT-60 Kit - GPMA0119 - Manual (Page 12)

D 5. Align the lower doubler as shown, with the front
edge even with the front edge of the bottom notch and the
landing gear block notch flush with the "indented" location
on the fuse side. There should be 1/8" of balsa showing
below the doubler when it's properly aligned. Glue the
lower doubler in position with thin CA the same way as the
upper doubler.
D 6. Repeat steps 4 and 5 to glue the doublers to the
second fuse side. Be sure to build a right and a left side.
(See the photo at Step 8.)
D 7. Align the die-cut 1/8" balsa aft fuse doubler even with
the rear end of the fuse. Position the doubler so that 1/8" of
the side sheet protrudes along the bottom edge and also
at the location of the stab as shown, then glue it in position
with thin CA. The pushrod exit slots are intentionally
staggered to allow the pushrods to angle smoothly through
the fuse. Repeat for the other side.
Skip step #8 if you will be using bolts to mount
your wing.
WING BOLT PLATE LAMINATION
D 10. Notice that two pieces of the wing bolt plate have
grain running in one direction while the third piece has grain
running opposite to the first two. The odd one goes in the
center of the sandwich. Mix up about 1/4 ounce of
30-minute epoxy, then glue the bolt plates together as
shown. This assembly must be held together with
clothespins or weighted down while the epoxy cures.
LI 8. If you will be installing the dowels for rubber band
wing attachment, you need to drill 5/16" holes through the
fuse sides at each die-cut location in the upper doublers.
Use a backup block of scrap wood under the fuse side to
prevent splitting the balsa as the drill bit goes through.
D 9. Locate the three die-cut 1/8" ply firewall parts F-1A,
F-1B and F-1C and the three die-cut 1/8" ply wing
bolt plates.
Note: you need the wing bolt plates for strength even if you
will be using rubber bands to attach the wing.
FIREWALL LAMINATIONS
(VIEWED FROM THE REAR)
D 11. Use the remaining 30-minute epoxy to glue F-1A,
F-1B and F-1C together. Be sure that F-1A (the one with
the punch marks) is on top of the stack with the punch
marks facing outward, that the locking tabs are aligned and
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