SIG Four-Star 40 SIGRC44, Инструкция по сборке и управлению, Страница: 9 / 22

.
16. a. When dry, double check through the servo opening on top and the center sheeting opening on the bottom that the
dihedral brace is glued solidly to the main wing spars and the W-1 wing ribs.
b. Glue the die-cut balsa piece BP into the aft end of the servo opening. When dry, trim BP flush with the top center
sheeting.
17.
a. The aileron torque rods have been pre-bent so that the threaded portion leans forward slightly inside the fuselage
(see the W-1 wing rib crosssection on the plans). That small angle will provide your Four-Star 40 with a bit of
differential movement (more up than down) in the ailerons, which makes for smoother rolling characteristics. Prepare
the torque rods for installation by roughening the brass bearings with sandpaper, then wiping them·clean.
b. Locate the 1/4"sq.x2" basswood grooved torque rod blocks and cut a notch in each of them as shown in the photo.
c. Glue the torque rods into the blocks being very careful not to get any glue in the brass bearings. The outer end of the
bearings should be even with the outer end of the blocks.
18.
a. Glue the torque rod/block assemblies in place on the wing T.E., again being very careful not to get any glue in the
bearings.
b. Notch the balsa trailing edge just forward of the notches in the torque rod blocks to allow full movement of the torque
rods.
c. Sand the top of the basswood blocks to match the slope of the trailing edge sheeting. A small sanding block is handy
for this step.
19.
The 1/16"x3/4"x1-5/8" plywood wing
hold-down plates can be sanded to a
more pleasing shape as shown in the
photo. Glue them in place on the bottom
of the wing, even with the back of the
torque rod blocks.
NOTE: Complete the steps in "Mounting
The Wing To The Fuselage" before
proceeding.
Finishing The Wing
20.
Finish off the bottom center sheeting, again using 1/16" balsa.
21.
If you haven't done so already, give the wing a final sanding. Sand just enough to
take off any prominent high spots or bumps. Excessive sanding may distort the
airfoil shape.
22.
The 1" wide fiberglass tape can be applied to the wing center joint (top and
bottom) using one of the two methods listed.