Great Planes Ultra Sport 40 Kit - GPMA0410 - Manual (Page 30)

the cockpit sides. Sand the bottom edge at an angle to
mate with the cockpit floor (fuse top front). Glue the dash
to the top front block, cockpit sides and cockpit floor.
17. Mark the outline of the engine mount on F-l
with a pencil. Remove the prop nut and propeller. Pop
the spinner backplate loose with a screwdriver and
remove the spacers. You may remove the engine and
mount in preparation for the next step. HINT: After
removing the engine, enlarge the hole in the spinner ring
as necessary until you can easily access the engine mount
screws with a long screwdriver.
21. Temporarily re-install the engine and mount;
then, from the remaining 1/4" balsa sheet and 1/2" balsa
triangle, cut pieces to partially fill in the right side
around the engine. Also, trim the balsa as necessary to
clear your muffler. SUGGESTION: The temptation is
to close up this area too much! We recommend that you
leave large enough openings that you may easily remove
the engine and mount, and so you will have convenient
access to the throttle linkage.
18. A 1/4" x 3" x 8" balsa sheet is provided for the
nose sides. From this sheet, cut a piece to fit on the left
side of the fuselage between the chin block, top front
block, F-l and the spinner ring. To do this more easily
you may remove the engine and mount, then lay the fuse
on its left side on top of the 1/4" balsa sheet and mark the
outline of the opening on the sheet. When installing this
block, make sure you stay clear of the engine mount.
19. If necessary, carve out an area of the nose side
needed for nosegear steering arm and pushrod clearance,
then glue the left nose side in place.
20. From the 1/2" balsa triangle stock provided, cut
lengths to fit in the upper left and lower left comers of the
nose, between F-1 and the spinner ring. Sand these balsa
triangles to a taper, with the wide part at the front, and
glue in place.
FINAL ASSEMBLY
SAND THE FUSELAGE
NOTE: Some heavy sanding is required to properly
shape the nose area. This task can be made much
easier if you use a razor plane and a sanding block
with #50-grit sandpaper for the rough shaping. The
very coarse sandpaper is used to achieve the basic
shapes, then use progressively finer grades of sand-
paper for a smooth finish.
1. Turn the fuse upside down and draw a line on the
aft end of the chin block 9/32" below the bottom edge of
F-2A. Now study the fuse plan side view and note the
final shape and curvature of the chin block. Use your
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