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Step 69 Tail Bellcrank
Press one M3x7 flange bearing into
one side of the tail bellcrank, followed
by one M3x5x3 spacer and the second
M3x7 flange bearing from the other side.
Slide the assembled pitch plate onto the
tail output shaft.
Step 70 Tail Rotor Blade Grips
Apply a small drop of L262
Red threadlock on the tail hub
near the bearing stop. Slide one
M4x10 ball bearing followed by
the plastic tail rotor grip. Look
carefully at the thrust bearing
and slide the thin race (larger
inside diameter) followed by
the ball race, remember to
grease the ball race, followed
by the thick race (smaller inside
diameter) inside the tail grip.
Slide one M3x5x0.5 micro
washer and the M3x9 ball bear-
ing. Apply a drop of L262 Red
threadlock to the threads and
tighten the M3 locknut until
the tail grip rotates smoothly
without binding. Repeat for the
other side.
Step 71 Tail Rotor Hub Assembly
Carefully form the threads in the tail gear box mount
for the tail bellcrank using an available M3 socket
cap screw. Align the hole in the tail bell crank to the
steel ball on the tail pitch plate and insert the M3x14
special socket cap screw through the bellcrank and
slide on one M3x5x0.5 micro washer. Apply a small
amount of slow cyanoacrylate glue to the newly
formed threads in the bellcrank mount and tighten
the screw until there is no play. Slide the tail rotor
grip assembly onto the tail output shaft, ensuring
that the steel ball is on the leading edge of the grip as
it would rotate into the downwash of the main rotor
blades. Align the hole in the hub with the indent in
the shaft and secure using one M3x4 set screw using
L242 Blue threadlock. Attach the tail pitch links to
the steel balls on the tail blade grips.
30
#HW6001 M3x14
Special Shoulder
Screw
#CNBB37F M3x7
Flange Bearing x 2
#HI6102 M3x5x2
Spacer
#CNLR1003 M3x5x0.5
Micro Washer
#HW3098A
Steel Tail Ro-
tor Hub
thin race
(first)
larger inside
diameter
#HI3087A Pitch
Plate Assembly
#CNLR1013 Short
#CNBB410
Steel Ball x 2
M4x10 Ball
Bearing x 2
#CNLR1003
M3x5x0.5 Micro
Washer
#CNBB49T
M4x9 Thrust
Ball Bearing
#HW6001 M3x14
Special Shoulder
Screw
M3x4 Set
Screw
#CNLR1020
Medium
Steel Ball
#HI6102 Tail
Bellcrank Lever
#HI6096A Tail
Blade Grips x 2
#CNBB39 M3x9
Ball Bearing x 2
M3 Locknut
thick race
(second)
small inside
diameter
Steel ball mounted clos-
est to the gearbox.
Gearbox Bottom View
x 2
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