Great Planes Extra 300S 40 Kit - GPMA0235 - Manual (Page 9)

9
A. LE (leave 1/16" long at both ends)
B. Root end
C. TE (cut 1/16" long at both ends)
D. 1/4" x 1/2" tip
E. 1/4" ribs
F. 1/8" diagonal ribs
G. Remove the elevator from the plan and inspect all the
glue joints. Add CA where necessary. Sand the LE
and TE flush with ends
H. Add 1/8" tips, sand flat and smooth with bar sander
and 220-grit sandpaper.
I. Build the other elevator the same as the first.
A. LE (cut 1/16" long at both ends)
B. Fin tip (use 1/4" x 3/4" x 24" balsa stick, remainder is
saved for front fuse deck sides)
C. Fin base
D. TE (cut 1/16" long at both ends)
E. 1/8" tail ribs
F. Remove the fin from your building board and inspect all
the glue joints. Add CA where necessary. Use your bar
sander to sand the top of the leading and trailing edges
even with the tip of the fin. Sand the bottom of the leading
edge even with the base. Sand the entire fin flat and
smooth with your bar sander and 220-grit sandpaper.
A. LE (cut 1/16" long at both ends)
B. Rudder tip
C. Rudder bottom
D. TE
E. 1/8" tail ribs (glue the two “straight” ribs before the
diagonal ribs)
G. Inspect all the glue joints and add CA where necessary.
Shape the bottom of the rudder as shown on the plan.
Sand the entire rudder flat and smooth with your
bar sander.
Note: The Balance Tab will be made later.
❏
1. Place the stab over its location on the plan and lightly
mark the hinge locations on the trailing edge with a
ballpoint pen. Mark the hinge locations on the elevators in
the same manner.
❏
2. See the Exper t Tip that follows, then mark the
locations of the hinge slots on the stab and elevators.
HOW TO MARK THE HINGE SLOTS
It's important that the hinge slots are centered and parallel to
the part you are hinging. The best way to start is by accurately
marking the hinge slots. We'll start with the stabilizer.
A. Lay the stabilizer and a ballpoint pen on a flat surface.
Mark a “test line” on the trailing edge of the stab away from
the hinge locations you marked earlier.
Hinge the Tail Surfaces
Recommended Rudder
Building Sequence
Recommended Fin
Building Sequence
Recommended Elevator
Building Sequence