CENTURY PRODUCTS Ninja Pro Instruction Manual Download Page 14

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Tail Rotor Blade Grip
Sliding Tail Rotor Pitch Control Mechanism
Slide a ball bearing (2002-209 Bag #7) onto the
tail hub (2002-199 Bag #7) followed by a
spacer (2002-211 Bag #7) then
another bearing. Secure the
bearings and spacer to the
hub with a small washer
and a 3mm lock-nut. Repeat
for the next side. Fit the tail blade
grips (2002-207 Bag #7) to the bearings
with four M2x10 screws and nuts ! Note
that one of the grip halves has a nub for the
pivot ball to be mounted to the grip. Repeat for the
next side. Attach a pivot ball on each assembly with
a M2x10 screw and nut.
Install a ball bearing (2002-204 Bag #7) on either
side of the tail pitch plate housing
(2002-205 Bag #7). Insert the tail
pitch plate inner sleeve (2002-203
Bag #7) into the tail pitch plate
housing. Note that the pivot pin is
offset and the brass slider must be
inserted into the side with less distance
between the pin and housing edge. .
Attach the tail pitch plate (2002-201 Bag #7)
to the brass tail pitch slider. Press the locking
ring onto the brass pitch slider to hold the pitch
control plate in place. It is advisable to add some
JB Weld epoxy to the locking ring for some added security. Add two small plastic ball links (2002-235 Bag #8) on the
tail pitch control plate. Secure them with (2002-202Bag#7) special screw and pin, slide the entire assembly onto the
tail rotor shaft. Attach the tail pitch lever (2002-191 Bag #7) to the tail rotor gear box with a M3x10 bolt two micro
shims (2002-230 Bag #5) and a lock nut. The steel pin on the tail rotor control housing (2002-205 Bag #7) fits into the
steel ball pressed into the end of the bell crank.
Fit the tail rotor hub (2002-199 Bag #7)) with the tail grip onto the tail rotor shaft (2002-193 Bag #7). Put two 3x3mm
set screws in the tail rotor hub, and use them to secure the hub to the shaft. Use Locktite on these set screws.
Fit the tail rotor blades to the blade holders with a 3mm washer on each side of the blade. Secure each blade with a
M3x16 bold and a 3mm nut.
NOTE: make sure the tail blades are facing the proper direction

Step 13 Tail Fins
Put the two half pieces of plastic fin mount (2002-085 Bag #4 or 4M)) on the tail boom (2002-173 Bag #10). Put the
horizontal fin (2002-175 Bag #1)) on top of them Insert two M3x35 bolts through the fin and the plastic mounts. Add
the two tail boom support rods (2002-179 Bag #10) under the plastic mount (2002-085 Bag #4 or 4M). Use two M3
lock nuts to secure all of them, but do not tighten them completely, yet. We will tighten them later.
Slide three tail pushrod guides (2002-171 Bag #4 or 4M) onto the tail boom: two are in front of the horizontal fin, and
one is behind the horizontal fin.
Fit the two plastic mounts (2002-085 Bag #4 or 4M) for the vertical fin (2002-177 Bag #1) on the tail boom. Add the
vertical fin. Insert two M3x35 bolts through the fin and the plastic mounts. Secure them with two 3 mm locknuts.

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