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Replacing a broken tail boom isn't so bad if you follow these
instructions carefully. Remove the tail and propeller for safety. |
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(1) Remove the Fuselage-to-Boom Screw |
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(2) Remove the Rudder Servo screw using a small phillips driver |
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(3) Pry the Rudder Servo arm off the servo head using a small
screw driver |
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(4) Remove the Elevator Servo screw and then the arm. The push rods can
now be pull rearward and then pulled out through the opening as shown.
In this position it's easy to remove the white servo arms.
Remove the push rods complete from the rear slots in the tail boom.
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(5) Press your thumb on the underside of the fuselage stem
near the screw hole to break the adhesive seal. You will hear it "crack".
Then twist the tail boom while holding the fuselage. |
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(6) Untie the loop knot in the antenna at the tail boom end
before removing the antenna wire. |
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(7) Twist the tail boom while pulling it out. The tail boom
removal is complete. |
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(8) Feed the antenna wire out the fuselage boom stem. |
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(9) Feed the antenna wire through the replacement tail boom. Use one
of the push rods to help push it through to exit the tail boom end. Tie
a large loop knot at the end to keep the antenna from pulling back through.
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(10) Insert the tail boom into the fuselage, taking care not
to damage the antenna. Twist the boom back and forth as you ease it into
the stem joint. Continue to feed it into the fuselage until approximately
1/2" extends beyond the housing boss. |
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(11) Attach the wing and tail and visually align the tail.
Then secure the aligned position by wrapping tape around the fuselage stem
flange and tail boom. Once secured, you may remove the wing and tail. |
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(12) Pre-drill 1/16" holes in the boom from each side
using the pre-exisiting holes in the fuselage housing as guides. Then,
with the drill turned off, guide the bit in one side and out the other.
Take care not to puncture the antenna wire. Once through, run the drill
momentarily to clear a smooth straight path. Insert the screw to check the
fit, it too tight to insert, a little more drilling will help. Remove the
screw for now, it will make installation of the push rods easier. |
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(13) Insert the SHORTER push rod into the elevator slot in
the tail boom. Place a tail assembly nearby if needed to remind you which
side the push rods attach too. You may need to twist the rod to help pass
internal obsticles. |
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(14) Visually check the path of the push rod. It should pass
freely through the large open end of the servo tray. Grab the push rod end
using needle nose plyers and pull the end out the rear access port as shown.
Turn the "U" bend at the rear end of the push rod so it points
up (see step 22 photo). Insert a servo arm as shown and place it in the
position to be installed on the servo head. |
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(15) IMPORTANT! Remove the propeller, turn on the transmitter,
set the servo trims to center and then plug in the T-HAWK battery. This
will center the servo head to prepare the proper orientation for installation
of the servo head.
Now position the servo arm on the servo head and press it firmly down
on the head in the position shown.
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(16) Install the servo head screw. With the elevator trim
centered, and system powered, the servo head position should be as shown.
Move the elevator stick to make sure the push rod moves freely and returns
to this position. |
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(17) Repeat the same procedure with the rudder push rod. Insert
the push rod through the slot and push it forward into the fuselage beneath
the |
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(18) Pull the rudder rod end out the forward opening and connect
the second servo arm. Rotate the push rod until the "U" bend is
pointing upward at the tail boom end (see step 22 photo). Place it in the
position shown to prepare for installion. |
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(19) With the radio system active, and rudder trim centered,
press the servo arm onto the servo head firmly in the position shown. |
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(20) Move the rudder stick back and forth to make sure the
rudder push rod moves freely and returns to the center position. |
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(21) Apply the black tape over the servo access openings. |
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(22) Use a paper clip to locate and center the tail boom joint
hole with the fuselage hole. |
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(23) Insert the fuselage screw taking care not to sever the
antenna wire inside. Use the paper clip as necessary to clear the antenna
and or push rods from the screw path. |
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(24) Hold the nut with needle nose plyers while tightening
the screw. |
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(25) The Tail Boom installation is complete. The push rod
ends should look like this. |
