Great Planes Sportster Bipe 40 Kit - GPMA0510 - Manual (Page 12)

GLUE IN BULKHEAD
Realign the fuselage upside down over the plans
and glue the fuse sides to bulkhead # 1 . Make sure the top of
the bulkhead is flat on the building board and that the front of
the bulkhead is facing forward.
12. ADD 1/4" TRI BRACING
Add three pieces of 114 triangle stock along the back
of the firewall. Extend the throttle linkage hole through the tri
stock.
13. GLUE FORMERS TO DECK BASE
Notch the 1/2 balsa deck base at the cornersto clear
the doubler as shown on the plans. The deck base should butt
up to the doubler. Pin the deck base over the plans to your
work surface. Mark the location of Formers #4, #5 and #6.
Check the fit of the formers and glue them to the deck base
making sure they are 90 degrees to the base.
14. PREPARE FORMER BRACES FOR PUSHROD
HOUSINGS
Temporarily put the fuselage/bulkhead assembly
over the deck base. Use a pushrod housing and mark the loca-
tion of the housing holes in the former braces. Make sure the
housing follows as straight a path as possible from bulkhead
#3 tothe exit. Drill the holes in the braces. Temporarily install
the housings to check your work. Remove the housings.. Tube
in a tube style
pushrods are shown here but other types may
be used.
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