Top Flite TOPA0405 - Manual (Page 34)

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4. Use the stab plan to locate the elevator
torque rod positions. Cut slots centered in the stab
TE for the torque rod guides. Test fit the elevator
torque rods in the TE of the stab.
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5. Cut slots in the stab TE to allow the torque
rods to pivot freely.
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6. Make sure the fin LE will fit through the slot
in the stab.
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7. Cut a notch at the aft edge of the stab saddle
to give the elevator torque rod room to rotate. Test
fit the stab onto the stab saddle. Make small
adjustments to the saddle if necessary for a good fit.
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8. Thread a nylon torque rod horn onto each
elevator torque rod so that the center of the torque
rod horn is 1-1/16" from the center of the bend. It’s
important that both horns are the same distance
from the center of the bend.
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9. Slide the torque rod guides to their proper
locations on the torque rods. Apply a small amount
of petroleum jelly to the torque rods where they
enter the guides to prevent the glue from getting
inside and ”locking up“ the guides. Use 6-minute
epoxy to glue the elevator torque rod guides in the
stab TE.
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10. Stick a short piece of 3/8" balsa into the slot
in former F-11 to simulate the fin LE. Bolt the wing
onto the fuse for reference.
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11. Position the stab in the stab saddle. Check
the alignment of the stab with the wing from the
front and rear of the model. If the stab tips are not
equidistant above the wing, carefully sand the high
side of the stab saddle until the stab and wing are
parallel. Using the “pin and string” technique, with
the pin centered on the top edge of the firewall,
align the stab with the fuse.
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12. Use 30-minute epoxy to glue the stab to the
stab saddle and former F-11. Recheck the stab
position before the epoxy cures. Remove the 3/8"
balsa stick from former F-11.
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13. From 1/4" x 1/2" x 32" hardwood, cut servo
rails to fit between the fuse sides in the notches in
the fuse doubler. Use a couple of servos to check
the spacing of the rails.
NOTE: If you are using 1/4-scale servos on the
elevator and rudder the servo rail spacing will be
wider and a separate servo tray is provided for the
tail wheel steering servo.
1-1/16"
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