.
Attaching The Tail Brace Wires
The tail brace wires are a scale feature that will add tremendous strength and
rigidity to the entire tail assembly on your model. We recommend that you install all
of the wires unless you are specifically building a model of Jesse's prototype.
General instructions for installing the wires appear on the plans (Plate 1). The
photo shows a typical installation.
Using the plans as a guide, carefully mark the position of each brace wire attach
tab on the tail surfaces and fuselage bottom. Drill at the marks with a 3/32" drill bit.
Pre-bend the steel tabs to their approximate angle, then fasten them in place using
the hardware described on the plans. Apply some Lock-Tite or glue to the nuts to
avoid any possibility of them loosening due to engine vibration.
NOTE: The 1/2" long aluminum tubes should be cut in half, making two 1/4" long tubes to clamp the wires.
Steel cable is provided in the kit to serve as tail brace wires. Cut each wire about two or three inches longer than necessary
so you have some excess to work with, (Remember to save some of this cable for the rudder control system.) Fasten the
wires as described on the plans. What you want are eight wires, each with a slight amount of tension. The actual amount of
tension is not too important as long as they are all about the same and the tail surfaces aren't twisted or distorted from their
normal position.
FUSELAGE CONSTRUCTION
Before beginning work on the fuselage, carefully cut out the WS-l, WS-2, and WS-3 wing saddle pieces from the 1/4" printed
balsa sheets (Sheet #2). As with the printed tail parts, cut just outside the lines with a jigsaw or modeling knife. Use a
sanding block to fit the parts exactly to the structure.
Before beginning work on the fuselage, you should decide what engine you plan to install. Since there are so many engines
available that can be used on the Spacewalker, it was impossible to design the kit with a standard nose section. See "About
the Firewall (F-1) Location" on Plate 4 for more information.
If you must build the model before deciding on an engine, it would be better to build the nose too short than too long. That
way, a plywood shim or mounting "box" can be added to the front of the firewall if necessary to position the engine correctly.
If the nose is too long, it will have to be sawn off and rebuilt.
Prepare the front fuselage main frame drawing (Plate 4) with the correct nose section for the engine that you plan to use.
Cover both the front and aft fuselage main frame drawings with waxed paper or plastic wrap.
64.
a. Begin construction of the front fuselage main
frame by gluing and pinning down the 1/4" sq.
spruce pieces along the top, front and bottom.
b. Glue in the 1/4" sq. balsa uprights.
c. Glue WS-1 in place.
d. Fill in the forward two nose sections using a
1/4"x3"x12" balsa sheet. This solidifies the
front end which helps to absorb engine
vibration.
65.
Build a second front fuselage main frame exactly as the first. When dry, pin the frames together and lightly even up the
edges with a sanding block. Sand both sides of each frame to remove any rough spots or glue "bumps".
66.
Repeat the process to construct two aft fuselage main frames.
67.
a. Glue the die-cut lite-ply PS-1 pieces to the front fuselage main frames. Be sure to make one right side and one left
side! The PS-1 pieces were cut extra long to accommodate any firewall position. Trim and sand the lite-ply even with
the main frames.
b. Glue the PS-2 pieces to the rear fuselage main frames, again being certain to make a left and a right.
Summary of Contents for SIGRC61
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