SIG FOUR-STAR 60, Assembly Manual, Page: 12 / 18

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gluing. The covering should be trimmed away 1/16” inside the
drawn lines. It is extremely important that you cut the covering
only and not the balsa underneath. Do not cut into the balsa. Also
remove the covering from the sides of the fin in the location of the
tail fairings.
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12) The vertical fin is now glued in place into the rear of the
fuselage - use 5-minute epoxy for the job to give you a little
working time. Apply glue to the exposed wood on both sides of the
fin base and to the bottom of the fin where it contacts the stab.
Also apply glue to the fin tailpost, where it slips into the rear of the
fuselage - keep glue away from the elevator hole in the tailpost.
With the fin in place, sight the model from the front to make sure
the fin is absolutely 90
O upright to the stab. If needed, use a little
masking tape to pull it into alignment. Wipe off any excess glue
using alcohol.
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13) The tailwheel assembly is now prepared and attached to
the bottom of the rudder. From the kit contents you will need:
• 1 each pre-bent tailwheel wire
• 1 each 2mm wheel collar
• 1 each metal tailwheel wire bracket
• 2 each M2 washers
• 1 each M2 x 20mm screw
• 1 each M2 hex nut
• 1 each 1" dia. tailwheel
• 1 each Allen wrench for the wheel collar.
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14) The tailwheel has two dissimilar sides - one side of the hub
is "dished" inward and the other side has its axle hole flush with
the hub. For mounting purposes, the "dished" side faces the wheel
collar. Simply slip the wheel in place onto the axle of the pre-bent
tailwheel wire, followed by the wheel collar. Leave a little play in
the wheel and use the Allen wrench to tighten and secure the
wheel collar to the axle. A little thread-locking compound on the
set screw will keep it firmly in place.
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15) The tailwheel assembly is now mounted to the bottom front
of the rudder. Use your hobby knife to remove the covering from
the slot in the bottom of the rudder.
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16) Insert the upright tailwheel wire stub into the hole and slot.
Slip the metal tailwheel bracket over the wire onto the bottom front
of the rudder. Mark the location of the hole in the bracket onto one
side of the rudder. Remove the bracket and use a 1/16" dia. bit to
drill through the rudder at the mark just made. Place the tailwheel
wire back onto the rudder and slip the bracket in place, aligned
with the hole just drilled. Place a washer onto the 14mm screw
and slip it through the bracket and out the other side of the rudder.
Use the remaining washer and hex nut to tighten the assembly
firmly to the rudder. Now, apply thin CA glue to the slot to lock the
wire into position and to harden the balsa wood in this area.
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17) The rudder is now hinged to the vertical fin. Use the same
hinging method described earlier in Step 8 of the WING
ASSEMBLY instructions.
RADIO INSTALLATION:
❑
1) Because the aileron servos are already installed and ready,
the installation of the rest of the radio system only consists of
dropping in the rudder, elevator and throttle servos, the receiver,
battery pack, and the switch. The pushrod connections to these
servos will be made shortly.
Install the rubber grommets and
eyelets supplied with your radio system onto the rudder, elevator,
and throttle servos.
Install all three servos in place into the
fuselage servo tray, again using the screws supplied with your