Tail Pitch Ball
Links x 2
M2x8 Pin x 2
[HI3089]
From parts bag 7: The Tail Pitch Plate and Tail Pitch Ball Links are pre-assembled. (
Note: apply
some JB weld to the outside of the lock ring to avoid the assembly loosening.
) Apply a drop
of CA glue between the edge of the brass tube and the plastic pitch plage. Put this assembly aside for
now.
Tail Pitch Plate
[HI3087A]
Pre-Assembled
Step 28 Tail Pitch Plate Assembly
6x10 Ball
Bearing x 2
[CNBB1060]
5x13 Ball
Bearing x 2
[CNBB1350]
Tail Gearbox Input
Shaft [HW3070A]
2x12mm Pin
M3x4 Set Screw
(small hex key)
Large Bevel
Gear
[HI3075]
Step 29B Tail Input Shaft Assembly
From parts bag 7, align the holes on the
large
bevel gear and press in one
2x12mm Pin and secure with one 3x4mm Set Screw inserted into the end of
the shaft using
threadlock. Slide
(
Tip 1
) two Ball Bearings
onto the shaft and install into one half of
the tail gear box. Next apply threadlock
to the 4x4mm set screw and insert into
the torque drive coupler. Slide the
drive coupler over the long
flat spot until the
there is no end play
in the shaft and
tighten the set
screw in place.
Torque Drive
Coupler
[HI3154]
M4x4 Set Screw
(med hex key)
23
Gearbox Housing
[HI3078]
Right Hand Side
(has mount for tail bellcrank)
Tail Pitch Plate
Assembly
From parts bag 7, slide
two Ball Bearings on each
side of the Tail Rotor
Output Shaft assembly
and insert through the
right side of the Tail Rotor
Gearbox Housing, make
sure the bearing is fully
seated into the recess.
Slide the tail rotor pitch
plate assembly on the
shaft.
5x11 Ball
Bearing x 2
[CNBB1150]
Step 30 Tail Gearbox Assembly
Small Bevel Gear
From parts bag 7, install the Tail Rotor
Hub on to the tail rotor drive shaft, (
posi-
tion the hub so the hole is aligned over
the hole in the shaft
) and
secure with one 3x4mm
Set Screw (
Tip 1
) using
threadlock. The hub is
tapped for two
holes, use
one only.
Install one short steel ball into the upper right
hole in the tail rotor grip (
Tip 2
). Insert one M4x10 Ball Bearing into the blade grip on the ball side (make sure
the bearing is fully seated flush into the grip). Slide the grip onto the tail hub and slide one M4x9 Thrust Ball
Bearing (
install the first steel washer (larger inside diameter) followed by the ball race, remember to
grease the ball race, followed by the second steel washer (smaller inside diameter)
followed by
one M3x5x0.5 micro washer and one M3x9 Thin Ball Bearing. Important, apply red threadlock to the
threads in the M3 locknut (
to avoid getting threadlock into the bearings
) before threading onto the
hub. Tighten the locknut slowly until there is no end play and the grip rotates smoothly.
M3x4 Set
Screw
(small hex key)
Steel Tail Rotor
Hub
[HW3098A]
M3 Locknut
M3x9 Thin
Ball Bearing
[CNBB0930]
Step 31 Tail Rotor Grip Assembly
Steel Ball 2mm Thread
[CNLR1013]
Tail Rotor
Grip
[HI3096A]
M4x9 Thrust Ball
Bearing
[CNBB49T]
Careful inspection of the thrust
races will reveal that the inside
holes are different in size. Cor-
rect installation has the smallest
race on the outside.
(Red Threadlock here)
M4x10 Ball
Bearing
[CNBB410]
CNLR1003
M3x5x0.5
Micro Washer
