Top Flite TOPA0708 - Manual (Page 15)

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11. Drill two 3/32" [2.4mm] holes through the bottom
rails for the tail gear. Mount the tail gear to the bottom rail
with two #6 x ½" [13mm] sheet metal screws. Remove
the screws and harden the screw holes with thin CA.
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12. Rotate the tail gear back and forth. If the steering
arm rubs on the stringers, use a hobby knife to trim
the stringer.
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13. Install the tail wheel steering servo in the center
of the servo tray. Remember to harden the screw holes
with thin CA. Connect the rudder servo and steering
servo to a Y-harness. Plug the Y-harness into the receiver.
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14. Thread a 4-40 nut and a 4-40 metal clevis on
to each of the 4-40 rigging couplers. Slide a silicone
clevis retainer over each clevis. Install the clevises on
the steering servo arm in the hole 1/2" [12.7mm] from
the center of the servo arm.
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15. Center the servo arm and the tail gear. Install a
swage on each cable, route the cable through the 4-40
rigging coupler and secure the cable following the same
procedure used on the tail gear. Use a pliers to crimp
the swage tightly on the cable.
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16. The tail gear cover can be permanently installed
using CA glue or with screws. If CA glue is used it will
be diffi cult to remove the cover and access the tail gear
if needed. To install the cover with screws, tape a piece
of paper to the fuselage, fl ush with the edge of the tail
gear opening. Make fi ve marks, evenly spaced, 1/8"
[3mm] from the edge.
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17. Center the tail gear cover over the opening and
fl ush with the aft end of the fuselage. Tape it in place.
Drill 1/16" [1.6mm] pilot holes through the cover and
the fuselage at each mark. Remove the cover and
enlarge the holes in the cover only with a 3/32" [2.4mm]
drill bit. Attach the cover to the fuselage with #2 x 3/8"
[9.5mm] sheet metal screws. Harden the screw holes
with thin CA glue.