Stevens Aero Model SHAFT S400, Инструкция по эксплуатации

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Wing
General Construction Notes: This wing is of typical I-Beam construction with additional torsional strength derived from the
trussed sub ribs. Each component precisely interlocks using the interlocking I-beam construction method developed by
Stevens AeroModel. Throughout construction, we suggest dry-fitting all components, and using minimal amounts of glue
at tab and notch locations only to hold parts together. By dry fitting the wing, each successive component will assist with
pulling the wing square and straight. It is not required to pin the wing to your building surface. In-fact, most of your
building will be done above the board. You will, however, require a flat surface to set the wing on top of for final gluing of
the assembly.
1. Begin construction by assembling major parts from sub assemblies: W1a and W1b to create W1 turbulator with
jig. W2a and W2b to create two (2) W2 turbulators. S1a and S1b to create S1 spar webbing, S2a and S2b to
create two (2) spar web caps. T1a and T1b to create trailing edge. Assemblies are joined along the pre-cut
scarf joints. Reference parts along a straight edge and bond at the scarf joints using medium CA glue. See
illustration below for parts reference.
2. Complete the S1 spar web assembly. Locate the previously assembled 3/32” balsa S1 spar web and the 1/32”
plywood S1c spar web doubler. Align S1c on top of the S1 assembly, centering S1c and S1 at the scarf joint.
Wick liberal amounts of thin CA glue between the parts to laminate the ply spar web doubler to the spar web
assembly. Note: S1c should not cover any of the rib (and sub-rib) notches in S1. See illustration below.
3. Key the complete re-enforced S1 assembly atop one of the S2 spar cap strips. Tack glue these parts together
at the tab and notch locations. Now locate the two (2) 1/8” balsa R1 ribs and key these to the slots in S1 on
either side of the scarf joint for the S1 assembly.
VERY IMPORTANT: The plywood doubler laminated
previously to S1 must face forward toward the wing leading edge. Set the second S2 spar cap aside as
this will not be joined to the assembly until much later. See illustration below.