Great Planes Spirit 100 Sailplane Kit - GPMA0550 - Manual (Page 35)

D 7. Sand the edges of the fuse sides to eliminate any rough
edges or glue but be careful not to sand any dips into the fuse.
D D 3. Glue the 3/32" Die-Cut Balsa Rear Fuse Doubler
(SPT1F07) in place making sure it lines up with the edges of the
fuse side at the rear of the doubler where the arrows in the photo
are pointing. Make sure the front of the doubler is centered on the
fuse side to allow for the stingers which will be applied later.
D D 4. Glue one of the 3/32" Die-Cut Balsa Wing Saddle
Triplers (SPT1F07) in place on top of the front fuse doubler. It
should line up with the top edge of the fuse side. Do not let the
tripler overlap the notches for the formers.
D D 5. Cut one of the 1/8" Sq. x 24" Balsa Stringers
(SPT1F11) to fit between the top notch for former F6 and the rear
doubler and glue it in place making sure it is lined up flush with
the top edge of the fuse side. Cut another 1/8" sq. balsa stringer
to fit along the bottom between the rear doubler and the bottom
notch for former F6 and glue it in place. It should be flush with
the bottom edge of the fuse side but make sure it is not covering
up the notches for F6.
D 6. Go back to step 2 and assemble the RIGHT fuse side. The
easiest way to do this is to pin the other fuse side upside down
above the one you just built as shown in the photo.
FRAME-UP THE FUSELAGE
You'll need the following items:
SPT1F04 1/8" DC Ply Front Fuse Bottom
SPT1 F05 3/32" Balsa Rear Top Fuse Sheet
SPT1F06 3/32" DC Balsa Rear Fuse Bottom
SPT1F08 1/8" DC Ply Formers
SPT1F10 1-7/8" Shaped Balsa Nose Block
SPT1F16 1/4" x 1/2" x 1" Basswood Ballast Box Handle
SPT1F17 1/8" DC Ply Formers and Cockpit Ends
SPT1W05 1/16" Ply Towhook Plate
BAL141 1/4" Balsa Triangle
IMPORTANT - There is an integral ballast box
designed into the fuselage that will hold up to 30 oz.
of lead directly over the CG. This box is formed by
formers BB1 and BB2 with BB3 used as a top. It also
doubles as a good place to store your wing bolts or
rubber bands between flying sessions. However it is
not necessary to include it in the construction of the
plane. (See Ballasting, p. 54) At this point you should
think ahead about your radio installation and
determine if you would be better off using this space
under the wing for your radio. When installing
spoilers you need to determine where the spoiler
servo will go. Normally the spoiler servo can go
between formers F4 and F5 with the rudder and
elevator servos between F3 and F4 and the receiver
behind the ballast box. You may need to use several
servo extensions to accomplish this but the ballast
box is a handy feature. You should always install at
least former BB2 which will add a little strength and
help hold the receiver in place.
MAKE SURE YOU ARE NOT BUILDING TWO
IDENTICAL SIDES, THEY SHOULD BE THE
OPPOSITE OF EACH OTHER.
D 1. Lay a piece of waxed paper over the FUSELAGE TOP
VIEW. Assemble but do not glue yet, the 1/8" Die-Cut Ply Front
Fuse Bottom (SPT1F04) and the 3/32" Die-Cut Balsa Rear
Fuse Bottom (SPT1F06) together over the FUSELAGE TOP
VIEW on the plans. Line up the slots in the front with the formers
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