Carl Goldberg GBGA0067 - Manual (Page 14)

13. ‡ Using the wing-tip side of Rib #4 as a guide, cut
through the trailing edge sheeting.
14. ‡ Cut a 1/8 x 1/4” balsa aft spar to a 10-3/4” length
and butt one end against Rib #4.
‡ Glue to the T.E. sheeting along the edge of the
rear line, as shown.
15. ‡ Using 5/64” scrap balsa as a spacer, glue an
AILERON RIB to the aft spar and the T.E. sheet.
16. ‡ From D/C sheet 6723, take an AILERON HORN
BACK-UP, marked “D” an glue it to the T.E.
sheeting, in line with the aft spar.
17. ‡ Using the long side of the rib spacing gauge,
locate ribs #5 through #9, gluing each of them to
the T.E. sheet.
NOTE: Make sure that the ribs are parallel to the
ribs on the plan, before gluing.
18. ‡ With the long side of the rib gauge, locate the
cut-off mark on the back of the aft spar, and cut.
‡ Install Rib #10.
14
RIB #3
RIB #3
RIB #4
RIB #4
STARTING HERE WING TIP
WING TIP
RIB SPACING GAUGE
AFT SPAR
5/64" SCRAP
CUT
AFT SPAR
10-3/4"