Great Planes Sportster Bipe 40 Kit - GPMA0510 - Manual (Page 19)

39. ADD NOSE FILLER BLOCK AND SPINNER RING
Using your engine as a guide, locate the placement
of the 2-1/4 x 2-1/4 x 1/2 nose filler block. The engine thrust
washer should extend 1/16 to 1/8 inches forward of the filler
block. Cut away areas on the block for engine clearance. The
placement of these parts depends on what brand spinner you
will use. Inspect your spinner backplate and locate the block
accordingly. When you are sure of the placement, glue the cross-
grain nose filler block in place. Sand the front of the nose
so
the front of the filler block and the front of the nose side pieces
are even. Glue the 1/16 plywood spinner ring in place on the
filler block using your engine and spinner backplate as a guide
for placement. The engine shaft should be centered in the hole
in the spinner ring.
40. ADD 3/8 TRI STOCK TO THE NOSE; SAND NOSE
TO SHAPE
.
Remove the engine and add the 3/8 triangle stock
along the bottom sides of the engine compartment and behind
the filler block. Use 3/8 x 12 triangle stock for this step. Custom
fit these pieces
so they glue to the firewall and nose filler block.
Now sand and carve the nose of the fuselage to the shape of
the spinner ring.
41. DRILL FUEL LINE HOLES AND A DRAIN HOLE
Drill the holes in former 1A for the fuel lines. See
the plan for placement. Drill a hole in the bottom of the engine
compartment just in fron of the firewall for fuel drainage.
42. ALIGN THE STABILIZER TO THE FUSELAGE
First align the fuselage to your flat work surface like
you did before by making sure the Fuselage Reference Line is
parallel to the work surface. Now align the stabilizer to the
fuselage in the following manner: A-Draw a centerline down
the stab bed at the end of the fuselage. Line up the stab center-
line to the fuse centerline. B-Measure from each stab tip to a
point at the centerof the top of the firewall area. Each measure-
ment should be the same. C M e a s u r e from each stab tip to
the work surface. Each measurement should be the same. D-
To make sure you have zero degrees incidence, measure from
the center of the leading edge to the work surface. Measure
from the center of the trailing edge to the work surface. These
distances should be the same. When the stabilizer is aligned,
do not glue in place but go on to the next step.
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