© 2008 Stevens AeroModel.
Page 37 of 52
11. Install 3/32 in. balsa part W6 (07/21) to wing assembly as illustrated below. IMPORTANT to avoid warping the
outer rib R6 it is strongly suggested that you stand the wing on end with R6 completely supported against your
FLAT work surface while bonding W6 to the assembly.
12. Install 1/16 in. balsa sub ribs R6b, R7a, R8a, R9a, and R10a (sheet 03/21) to wing tip assemblies as illustrated
below. Tack glue at tab and notch locations from back side of spar web.
13. Dry fit forward 3/32 in. balsa turbulator T4 to assembly as illustrated below. T4 is marked with an “<-“ which
defines the end that should be placed closest to the dihedral break rib R6. As with the wing center section
assembly all turbulators T4, T5, and T6 are designed to fit flush with the inside R6 ribs and outside R11 ribs,
however, at mid span from ribs R6b through R10a the turbulators will sit proud of top surface of rib by 1/16 in.
Use a piece of scrap balsa to reference proper height.
IMPORTANT!
Once T4 turbulator has been fit to the wing assembly bond with thin CA glue starting at rib R11
and working in to sub rib R6b.
PRIOR TO BONDING TURBULATOR T4 TO R6 READ THIS:
Do not attempt
to use notching in T4 turbulator to set proper spacing for R6. As every wing will build with some variance and
we don’t want to blindly bond this part and possibly warp R6. R6 must remain perfectly FLAT to match the
dihedral break rib R5 of the wing center section. Thus, stand the wing assembly on end supporting R6 against
your flat work surface, make certain that R6 is indeed flat to the work surface, allowing turbulator to float within
notch at R6 to achieve a perfectly flat and warp free R6, once satisfied that R6’s flat bond the turbulator to the
R6 end rib.
