Century Helicopter Products Hummingbird Elite 3D Pro User guide

Hummingbird
Elite 3D Pro
This Super-Micro R/C helicopter has the most advanced capabilities and is considered
top-of-the-line. 120 degree eCCPM control, collective main and tail rotors, torque tube tail
drive and brushless motor ensure top performance.
MAX MAIN ROTOR RPM 3000
RECOMMENDED MOTOR: HIMAX 4100
MAIN ROTOR DIAMETER: 520mm
LENGTH: 485mm
WEIGHT: 360-380g with electronics and battery
Century Helicopter Products
Designed and Developed in USA
Copyright June 2005. All rights reserved. Revision 1.0
SPECIFICATIONS
Fax: [phone]
Web:www.centuryheli.com
Century Helicopter Products
1740-C Junction Ave.
San Jose, CA 95112
Assembly Kit
Instruction
Manual

Items needed to fly the Hummingbird
1x Radio (6 channels)
1x Receiver (6 channels)
4x Micro servos
1x Micro gyro
1x Brushless motor (4100 RPM/Volt)
1x Brushless speed controller
1x Battery (11.1V Li-Poly or Li-Ion)
1x Charger (Li-Poly or Li-Ion type)
Introduction
Congratulations on the purchase of Century Helicopter Product’s Humming-
bird Elite series helicopter. The Hummingbird Elite is not only ideal for begin-
ners new to the hobby, but also for the intermediate to expert pilot looking for
the ultimate in micro electric helicopter performance. The 3D Pro requires
a 6+ channel computer radio that supports 120 degree eCCPM operation.
Please check with your favorite retailer or manufacturer to verify compatibility
of your radio system of choice.
Warning!
This radio controlled model is not a toy! It is a precision machine
requiring proper assembly and setup to avoid accidents. It is the re-
sponsibility of the owner to operate this product in a safe manner as
it can inflict serious injury.
The helicopter is made pre-assembled and will require inspection for
construction before your first flight.
As the manufacturer, we assume no liability for the use of this prod-
uct.
Table of Contents
Table of Contents & Introduction ......................................... 2
Required Items and Building Guide for Assembly ............. 2
Mast Tower Assembly ........................................................... 3
Lower Frame Plate Assembly ............................................... 3
Tail Boom & Drive Shaft Assembly I .................................... 3
Tail Boom & Drive Shaft Assembly II ................................... 4
Landing Gear & Tail Supports .............................................. 4
Main Rotor Hub ...................................................................... 5
Seesaw & Shaft collar ........................................................... 5
Main Rotor Head Assembly .................................................. 6
Gear Train Assembly ............................................................. 7
Combining Major Assemblies .............................................. 8
Rotor Head Pushrods ............................................................ 8
Tail Rotor Assembly .............................................................. 9
-Always turn your transmitter on before powering
the model.
-Always turn off the model by disconnecting
the helicopter battery prior to turning off the
transmitter.
-Always start the helicopter with throttle in the low
position.
-Always perform a pre-flight inspection for safe
operation.
These rules will help prevent unsafe operation.
Motor is not mounted on
the 3D Pro. Install the
motor as shown. Align the
mesh between the main
motor pinion and the main
gear. Note the position of
the pinion gear and main
gear then use those loca-
tions to tighten the screws.
Once tightened the motor
should not move from that
position.
HUMMINGBIRD 3D PRO MOTOR TIGHTENING PROCEDURE
Using the two included silver alumi-
num motor standoffs (pictured). Align
the motor for best possible gear mesh.
Using a Phillips head screwdriver fully
tighten the motor bolts in place where the
gear mesh is best.
RULES OF R/C
Attention!
If you purchased your Hummingbird Elite 3D Pro with the Lightning Brushless Motor the motor bolts will not be mounted.
See below for details.
If you are using a motor other than the Lightning Brushless DO NOT ALLOW MAIN BLADES TO EXCEED 3000 RPM.
The mounting of an aftermarket motor may be slightly different.
Thank You For Purchasing The Hummingbird
Elite 3D Pro Helicopter Assembly Kit!
REQUIRED ITEMS FOR OPERATION
2
LOCK
TITE
GLUE
HERE
SYMBOLS AND INDICATORS
Blue
Text
Green
Text
Special
notes
Use Blue
Locktite
Use CA
Glue
Main Part
Description
Part Detail
Description
LUBE
HERE
Use Gear
Oil

1-1
Section 1: Mast Tower Assembly
Bags Used:
CNE309, CNE310, CNE312, CNE216
Lower Frame Plate Assembly (2-1)
Get parts bag CNE311 Lower Frame Plate, CNE320 Battery Holders and the
remaining Frame Holders in parts bag CNE310.
5) Slip the Battery Holders on from the left side of the Lower Frame Plate.
6) Slip the Radio Tray onto the Lower Frame Plate closest to the Motor Mount-
ing Slots and the Rear Lower Bracket on the opposite side.
Place this assembly aside for now, we will get back to it later.
Section 2: Lower Frame Plate Assembly
Bags Used:
CNE311, CNE320, CNE310
Section 3: Tail Boom & Drive Shaft Assembly
Bags Used:
CNE316, CNE315, CNE305
Tail Boom & Drive Shaft Assembly (3-1, 3-2)
Get parts bag CNE316 Tail boom, push rod and guides, CNE315 Tail drive shaft set and CNE305 Tail drive
shaft gears.
7) Get the Tail Drive Shaft Bearing inside CNE315 parts bag. Drop a small amount of Tri-flow CN2024T
(Optional) around the race of the bearing, coat the rubber o-ring on the outside of the Tail Drive Shaft
Bearing with a film of liquid soap, so it can easily be pushed inside the center of the Tail Boom. Use a
wooden dowel to insert the Tail Drive Shaft Bearing in the center of the Tail Boom.
Wooden dowel
Tail Boom & Drive Shaft Assembly (Fig. 3-2)
8) Using the mast tower assembly from step 4 insert the slotted
side of the Tail Boom into the Tail Boom Brace Bracket. Twist
until slots on the Tail Boom fit snugly in place inside the Tail
Boom Brace Bracket. Secure the Tail Boom with the supplied
M3x3 Set Screws found in the parts bag CNE310 (screw bag).
Battery
Holders
#CNE320
Flanged
Ball Bearing
#CNE213F
Mast Tower
#CNE309
Motor Mount
#CNE310
Tail Boom
Brace Bracket
#CNE310
Tail Drive Shaft Bearing
#CNE315
Swashplate
Antirotation
Bracket
#CNE216
Tail Boom
(Slotted End)
#CNE316
Tail Boom
Brace Bracket
#CNE310
Upper Frame
Plate #CNE312
FRONT REAR
Motor
Mounting
Slots
Bearing #CNE213
(Between bracket
& tower)
Bearing
#CNE213
M2x5 Machine
Screws (3)
#CNE309
Lower
Frame Plate
#CNE311
Radio Tray
#CNE310
Rear Lower
Bracket
#CNE310
M2x8 Machine
Screws (2)
#CNE310
M2x8 Machine
Screws (2)
#CNE310
Mast Tower Assembly (1-1)
1) Place the Mast Tower CNE309 on top of the CNE312 Upper Frame Plate and
align until the Mast Tower to match the bolt pattern of the Upper Frame Plate.
2) Secure the Mast Tower with the supplied M2x5 Machine Screws (3X) found in
CNE309 parts bag.
3) Identify the Motor Mount with CNE310 and slip it over the Upper Frame Plate.
The Motor Mount should touch the lower tab of the Mast Tower. Then install
the Tail Boom Brace Bracket over the opposite end of the Upper Frame Plate.
Secure the Tail Boom Brace Bracket and Motor Mount with the supplied M2x8
Machine Screws (4X).
4) Open parts bag CNE216 Antirotation Bracket and place it on top of the Mast
Tower, facing forward, towards the Motor Mount.
Place this assembly aside for now, we will return to it later.
Tail Boom #CNE316
2-1
3-1
3-2
M3x3 Set Screws
(2) #CNE310 3

Bearing
#CNE213
M2x2 Set Screw
#CNE305
Small Beveled
Tail Drive Gear
#CNE305
Tail Boom #CNE316
(Rear side with round holes)
Tail Drive Shaft
#CNE315
4-1
LOCK
TITE
Landing gear assembly (5-1, 5-2, 5-3)
14) Open CNE326 Landing Gear Set. Note that there are mounting posts on the
inside of the curved portion of the Landing Struts. Also notice that there are
holes in these posts. When you attach the Landing Gear Set, make sure that
all of the holes are pointing to the rear.
15) Use the supplied M2x11.5 Machine Screws found in CNE310 to mount one
of the Landing Struts to the Radio Tray. The other Landing Strut connects to
the Rear Lower Bracket.
16) Insert one Pushrod Guide first and then the Horizontal Fin from CNE317 3D
fins bag. Install the Horizontal Fin onto the CNE316 Tail Boom between the
Push Rod Guides.
17) (This step is related to the assembly in this section but cannot be completed
until 10-2 has been completed). Insert the carbon fiber Tail Boom Support to
the Mounting Posts and in to Horizontal Fin Mounting Posts. Use the sup-
plied M2x8 Machine Screw to secure the Horizontal Fin.
18) Use the Rudder Pushrod from bag CNE316 connecting it to the indentations
in the Push Rod Guides .
Put our assemblies to the side for now and we will get back to it later.
Section 4: Tail Drive Assembly (Continued)
Bags Used:
CNE308, CNE309, CNE312, CNE216
Section 5: Landing Gear & Tail Supports
Bags Used:
CNE326, CNE310, CNE317, CNE316
Tail Boom/Drive II (4-1, 4-2, 4-3)
9) Slide one of the CNE213 Bearing over the Tail Drive Shaft.
10) Open parts bag CNE305 Tail Drive Gear Set.
CNE305 includes a bag with 3x M2x2 Set Screws, put these screws
into a container or open the bag when it’s ready to be use.
11) Get the Small Beveled Gear and insert it into the rear section of the
Tail Drive Shaft. Make sure that the head is flush with the tip of Tail
Drive Shaft. Place a small amount of locktite on the threads of the Set
Screw to secure the Small Beveled Gear on the Tail Drive Shaft (see
4-2).
12) Install the Tail Drive Shaft into the Tail Boom and through the Tail
Boom Bracket. Then insert the Large Beveled Gear onto the Tail
Drive Shaft. Use a small amount of locktite to secure the Large Bev-
eled Gear in place by using the supplied M2x2 Set Screw.
13) Using parts bag CNE308 Rear Rudder Servo Mounts, insert both
mounts over the Tail Boom (refer to 4-3 for direction). Do not tighten
the screws in CNE308 at this time.
M2x2 Set
Screw
#CNE305
Large Beveled
Tail Drive Gear
#CNE305
Landing Skids
(Aluminum)
#CNE326
Landing Struts
(Plastic)
#CNE326
Mounting Posts
(For boom supports
pointing rearward)
Horizontal Fin and clamp
with Mounting Posts for
boom supports #CNE317
Pushrod Guide
#CNE316
Horizontal fin
#CNE317
#CNE308 Rear
Rudder Servo
Mounts
Tail Drive Shaft (must sit
flush with the large beveled
gear) #CNE315
4-2
4-3
LOCK
TITE
Tail boom
#CNE316
Radio Tray
#CNE310
Rear Lower
Bracket
#CNE310
FRONT
REAR
Tail Boom
#CNE316
Pushrod Guide
#CNE316
Tail Boom Supports
#CNE317
5-1
5-2 5-3
Rudder Pushrod
#CNE316
Note: Only Do step (5-3)
after completing (10-2)
M2x8 Machine
Screw #CNE317
4
M2x11.5 Machine
Screws
#CNE326
(Landing Gear)

Landing Struts
(Plastic)
#CNE326
Section 6: Main Rotor Hub
Bags Used:
CNE303, CNE313
Main Rotor Head Assembly (6-1, 6-2)
Get parts bag CNE303 CNC Rotor Hub and rotor hub collar and Part bag
CNE313 Main Shaft, spacers and main shaft collar.
Place not used here in a container to avoid losing them.
19) Insert CNE313 Main Shaft into the CNC Rotor Hub. Take note that the
Main Shaft has three holes. Mount the CNC Rotor Hub onto the end
of the Main Shaft where the hole is closest to the tip of the Main Shaft
(least material between the hole in the shaft and the end of the shaft).
Put the Plastic Link Stabilizer over the bottom of the CNC Rotor Hub.
Note, that there is a hole in the middle base of the CNC Rotor Hub. Align
the holes from the Plastic Link Stabilizer to the CNC Rotor Hub, hold it up to
a lamp, you should be able to see light through the hole (if the lamp is ON).
20) Insert the 11mm Jesus Pin through the assembly. Tap or press the
Jesus Pin in place using hobby pliers.
Seesaw & Rotor Hub Collar (7-1, 7-2, 7-3)
Open parts bag CNE306 seesaw assembly.
21) Place the Center Pivot Joiner inside the CNC Rotor Hub (long ends of the
Center Pivot Joiner will protrude from the large slots of the CNC Rotor Hub
Short ends will protrude from the small slots).
22) Remove the Head Button from on top of the CNC Rotor Hub and insert the
Inner Seesaw Assembly and align it with the Center Pivot Joiner. Attach
the Inner Seesaw Assembly to the Center Pivot Joiner using the supplied
M2x7 Countersunk Screws from bag CNE306. Once completed, replace
the Head Button onto the CNC Rotor Hub.
23) Attach the Swing Arms using the supplied M2x7 Button Head Screws to the
Inner Seesaw Assembly with the two control balls facing the Inner Seesaw
Assembly (7-3).
24) Start the supplied M2x5 Machine Screw into the Rotor Hub Collar and
insert it over the CNC Rotor Hub until it is flush with the Plastic Link
Stabilizer. Apply locktite to screw and tighten.
Place extra small parts in a container.
Section 7: Seesaw & Rotor Hub Collar
Bags Used:
CNE306, CNE313
Main Shaft
#CNE313
Plastic Link Stabilizer
#CNE303
CNC Rotor Hub
#CNE303
Jesus Pin
(goes here)
#CNE303
Center Pivot Joiner
#CNE306
Inner Seesaw
Assembly #CNE306
Rotor Hub
Collar
#CNE303
Center Pivot Joiner
#CNE306
M2x7 Countersunk
Screw (2) #CNE306
6-1
6-2
7-1
7-2
7-3
Head Button
#CNE303
CNC Rotor Hub
#CNE303
Swing Arm
#CNE306
M2x5 Machine
Screw
#CNE303
Swing Arm
#CNE306
M2x7 Button
Head Screw
#CNE306
Control Ball
LOCK
TITE
Plastic Link
Stabilizer
#CNE303
5

Section 8: Main Rotor Head Assembly
Bags Used:
CNE303, CNE313, CNE201, CNE302, CNE304, CNE207
Rubber
Dampener
#CNE201
Large Black
Washer
#CNE201
Small Brass
Washer
#CNE201
Outer Seesaw
Assembly
#CNE306
Head Axle
#CNE201
Jesus Pin
#CNE201
Flybar
#CNE304
Seesaw
Assembly
#CNE306
Flybar Threads
Flybar Paddle
#CNE207
Main rotor head assembly (8-1, 8-2, 8-3, 8-4, 8-5)
25) Place the two Rubber Dampeners in the circular openings of
the CNC Rotor Hub. Insert the Head Axle inside the Rubber
Dampeners.
Note: The Head Axle has a hole in the center which must align with
the CNC Rotor Hub. Hold it up to the light you should be able to see
through the holes and insert the Jesus Pin.
26) Insert the supplied Jesus Pin into the CNC Rotor Hub to secure
the Head Axle. Tap or press with hobby pliers. Insert one of the
Large Black Washers from parts bag CNE201 followed by a Small
Brass Washer onto the Head Axle. Repeat the process on the
other side of the CNC Rotor Hub.
27) Open parts bag CNE302 Main Blade Grips. Install each grip over
the Head Axle using the M2x5 Machine Screws found in CNE201.
Check for tightness in the pre-installed bearings by moving the
Main Blade Grips. If the movement is rough then the screws are
in too tight. Once smooth, place small drop of locktite onto the
threads of the screws completing the Main Blade Grip assembly.
28) Insert the Outer Seesaw Assembly over the Inner Seesaw
Assembly.
Note: The set screws installed on the Outer Seesaw Assembly should
be oriented upright.
29) Align the Center Pivot Joiner, Inner Seesaw Assembly and Outer
Seesaw Assembly in order to insert CNE304 Flybar through the
Seesaw Assembly. Insert Flybar through all of the above.
30) Measure the length of the Flybar. Flybar must be even in length
on both sides of the CNC Rotor Hub. Secure the Flybar in place
by tightening the M3x3 Set Screws in each side of the Seesaw
Assembly. Do not over-tighten the Set Screws here to avoid
causing damage to the Outer Seesaw Assembly.
31) Put a “Dab” of medium CA to the thread on each end of the Flybar.
Thread the CNE207 Flybar Paddles onto the Flybar flush to the
end of the Flybar Thread. Check the length of the completed
Flybar with Flybar Paddles installed ensuring each side is equal.
32) Align the Flybar Paddles to the Seesaw Assembly (8-5).
Note: The Seesaw Assembly will act as your paddle pitch gauge, this
method will enable you to find the correct (zero) pitch for the Flybar
Paddles. Place small loose parts in a container for future use.
Main Blade
Grip #CNE302
8-1
8-2
8-3
8-4 8-5
M2x5 Machine
Screw #CNE201
Bearing
#CNE213
M3x3 Set
Screw
#CNE306
M3x3 Set
Screw
#CNE306
GLUE
HERE
Seesaw
Assembly
#CNE306
Flybar Paddle & Seesaw Assembly must align parallel.
LOCK
TITE
6
Flybar
#CNE304
Top Of
Blade
Grip
Bottom
Of Blade
Grip

Main rotor head assembly (9-1, 9-2, 9-3, 9-4, 9-5)
Using the built Upper Main Frame and the built Rotor Head Assembly. Most of the
remaining items from bag CNE313 will be needed here.
33) Insert CNE314 Swashplate to the Main Shaft directly under the Rotor Hub
Collar. There are three control balls on the Swashplate outer arms and one
straight guide. Insert the Straight Guide of the swashplate to the Antirotation
Bracket.
There are two Brass Washers, two Black Washers and one 11.70mm Jesus Pin in
parts bag CNE313.
34) Insert the Swashplate to the Main Shaft followed by the Main Shaft Collar and
Brass Washer below the Main Shaft Collar. Start the M3x3 Set Screw into the
Main Shaft Collar (do not tighten until 9-5).
35) Insert the Main Shaft into the Mast Tower, sliding it through flush to the bottom
of the Upper Frame Plate & ball bearing.
36) Open parts bag CNE319 Tail Crown Gear. Insert it between the Upper Frame
Plate and the Large Beveled Gear to allow the gear teeth to mesh (9-2).
Teeth of the Tail Crown Gear should be facing away from the Upper Frame Plate.
37) Insert the Main Shaft through the Tail Crown Gear. Slide the two Black
Washers in CNE313 onto the Main Shaft below the Tail Crown Gear. Open
parts bag CNE250 Autorotation Hub & Gear. Insert the black Autorotation
Locking Insert into the gear into the one-way bearing with the opening facing
outward. Slide the Autorotation Hub & Gear onto the Main Shaft to allow the
tapered aluminum portion of the Autorotation Hub to touch one of the Black
Washers.
38) Expose the bottom hole of the Main Shaft. Insert the supplied 4.70mm Jesus
Pin into the bottom hole in the Main Shaft, align the Jesus Pin to the opening
in the Autorotation Locking Insert and pull upward on the rotor head to lock the
Jesus Pin in place.
39) Insert 7.80mm Jesus Pin found in CNE313 into the Main Shaft above the two
Black Washers. Use long nose pliers to guide the Jesus Pin through the lower-
middle hole of the Main Shaft.
40) Align the Jesus Pin to the opening in the Tail Crown Gear and pull the shaft
assembly upward locking the Jesus Pin in place.
41) (Both lower Jesus Pins are now aligned and the gear train is flush to the
bottom Bearing of the Upper Frame Plate). Move the Main Shaft Collar to
the lowest position on the Main Shaft pressing the Brass Washer against the
upper Bearing inside the Mast Tower. Locktite and tighten the M3x3 Set Screw
to complete the assembly (the gear train at this time should have virtually no
vertical movement / play).
Section 9: Main Gear Train Assembly
Bags Used:
CNE313, CNE314, CNE319, CNE250
Tail Crown Gear
#CNE319
Swashplate
#CNE314
Main Shaft Collar
#CNE313
Jesus Pin
#CNE250
M3x3 Set
Screw
#CNE313
Tail Crown Gear
#CNE319
Jesus Pin
#CNE313
Black Washers (2)
#CNE313
Autorotation Hub & Gear
Assembly (tapered portion)
#CNE250
Brass
Washer
#CNE313
Rotor Hub
Collar
#CNE303
Large Beveled
Tail Drive Gear
#CNE305
Autorotation
Locking Insert
#CNE250
Autorotation Hub
#CNE250
Autorotation
Gear #CNE250
Main Shaft Collar
#CNE313
LOCK
TITE
9-1
9-2
9-3
9-4 9-5
7

Combining Major Assemblies (10-1, 10-2)
42) Install the Brass Washer from bag CNE313 onto the Main Shaft
located in the Upper Frame Assembly. Align the Main Shaft with the
opening on the flanged portion of the Bearing in the Lower Frame
Assembly.
43) Align the bolt holes in the Tail Boom Brace Bracket with the Rear
Lower Bracket and attach them using the two M2x5 Machine Screws.
Section 10: Combining Major Assemblies
Bags Used:
CNE313, CNE301
Rotor Head Linkage (11-1, 11-2)
There are 3 different sets of links in CNE307.
2x Short Double Links
2x Long Adjustable Links
2x Long Solid Links
44) Snap on the Short Double Links to the Control Balls
on the Main Blade Grips and to the Inner Control
Balls of the Swing Arm.
45) Snap on Long Adjustable Links to the Outer Control
Balls of the Swing Arms and to the Control Balls on
the inner race of Swashplate.
46) Insert the Long Solid Links through the Plastic Link
Stabilizer and attach to the Inner Control Balls of the
Outer Seesaw Assembly and to the Control Balls on
the Swashplate inner race.
Section 11: Rotor Head Linkage
Bags Used:
CNE307
Short Double
Link #CNE307
Long Adjustable
Link #CNE307 Long Solid Link
#CNE307
(1 on each side)
Swing Arm
#CNE306
Brass Washer
#CNE313
Upper Frame
Assembly M2x5 Machine
Screw #CNE310 (2)
M3x18 Machine
Screws #CNE301 (2)
43) Mount the Motor using the Motor Mount Spacers and M3x18
Machine Screws provided in CNE301. Align so that the
Pinion Gear of the Motor meshes smoothly with the large
Autorotation Hub & Gear.
If using any motor other than CNE252 Lightning Brushless Motor,
other third-party motor mounting hardware may be needed.
Rear Lower
Bracket
#CNE310
Lower Frame
Assembly
Tail Boom Brace
Bracket #CNE310
Bearing
#CNE213F
Main Shaft
#CNE313
Century Lightning Brushless
Motor #CNE252
Pinion Gear 10-Teeth
#CNE056G
Pinion Gear 11-Teeth
#CNE056GB
Autorotation
Hub & Gear
#CNE250
Motor Mount
Spacer
#CNE301
Short Double
Link #CNE307
Long Adjustable
Link #CNE307
Short Double
Link #CNE307
Long Adjustable
Link #CNE307
Main Blade Grips
#CNE302
Outer
Control
Ball
Inner
Control
Ball
Control Ball
Swashplate
(inner race)
#CNE314
Outer Seesaw
Assembly
#CNE306
Control Ball
(1 on each side)
10-1
10-2
11-1
11-2
8

Tail gearbox assembly (12-1, 12-2, 12-3, 12-4)
Open parts bag CNE318 Tail Output Shaft Assembly, CNE321 Tail Pitch
Lever, Tail Pitch Slider and CNE325 Tail Gearbox.
Place small parts in a container.
47) The Tail Output Shaft has three indentations. One end has two
indentations opposite to one another. Locate the Tail Rotor Hub and
align it one of the two indentations. Use the supplied M2x2 Set Screw
and locktite to secure the Tail Rotor Hub in place. Insert the Tail Pitch
Slider onto the Tail Output Shaft with the plastic Tail Pitch Slider Arms
pointing toward the Tail Rotor Hub.
48) The Tail Gearbox consists of two halves: left and right. Use an hobby
knife to create parallel shallow grooves (for glue) on the inside
Clamping Portion as pictured (12-1) for both sides of the Tail Gearbox.
The right half of the Tail Gearbox has a plastic Tail Pitch Lever Mount.
Slide the Tail Output Shaft through the Bearing installed in the right
half of the Tail Gearbox from the outside.
49) With the Tail Gearbox attached slide the Tail Output Spacer onto the
Tail Output Shaft.
50) Align the Tail Output Gear onto the Tail Output Shaft with the teeth
facing the right side of the Tail Gearbox. Use the supplied M2x2 Set
Screw and locktite to secure the Tail Output Gear in place.
When removing this assembly in the future use heat from a soldering iron
place it on top of the M2x2 Set Screw to heat away the locktite.
51) Use an hobby knife to create shallow parallel grooves in the Clamping
Portion of the Tail Boom. Attach the Tail Gearbox to the Tail Boom.
Use a thin layer of medium strength CA glue on the Outer Rim of both
sides of the Tail Gearbox. Also use CA glue on Clamping Portions
of both the Tail Boom and Tail Gearbox. Place the Tail Drive Shaft
Bearing into the Bearing Housing in the right side of the Tail Gearbox
and join the two halves together (Use an gear oil for the two gears
inside the Tail Gearbox before joining glued halves).
Section 12: Tail Gearbox Assembly
Bags Used:
CNE318, CNE325, CNE321, CNE317, CNE324, CNE322
Bearing
Housing
12-4 Tail Gearbox
(left side)
#CNE325
Tail Gearbox (right
side) #CNE325
Tail Boom
#CNE316
Tail Drive
Shaft Bearing
#CNE213
Tail Drive
Shaft Gear
#CNE305
Tail Output
Gear
#CNE318
12-2
Tail Gearbox (right
side) #CNE325
Tail Output
Gear
#CNE318
Output Shaft
#CNE318
Tail Pitch
Slider Arms
Tail Rotor
Hub
#CNE318
M2x2 Set
Screw
#CNE318
Tail Pitch
Slider Pin
Tail Pitch
Slider
#CNE321
Tail Pitch
Lever
Mount
Tail Output
Spacer
#CNE318
M2x2 Set
Screw
#CNE318
LOCK
TITE
LOCK
TITE
Tail Gearbox
#CNE325
Clamping Portion
12-1
LUBE
HERE
Clamping Portion
Tail Boom
#CNE316
12-3
Outer Rim
LUBE
HERE
9
Tail Drive
Shaft Bearing
#CNE213
Tail Drive
Shaft Gear
#CNE305
Tail Output
Gear
#CNE318

13-2 Tail Rotor
Blade
#CNE322
M2x7 Machine
Screws
#CNE317
Rudder Pushrod
#CNE316
Tail Blade
Grip
#CNE324
M2x7 Machine
Screws
#CNE317
Vertical Fin
#CNE317
M2x4
Machine
Screw
#CNE317
13-1
Tail Pitch
Slider Arms
M2x6 Machine
Screws
#CNE324
M2x6 Machine
Screws
#CNE324
Tail Rotor
Hub
#CNE318
Tail Pitch
Lever
#CNE321
Tail Pitch Slider
Pin Mount
M2x4 Machine
Screw
#CNE321
M2x8 Machine
Screw #CNE321
Tail Pitch
Slider Pin
Tail Blade
Grip
#CNE324
LOCK
TITE
Tail gearbox assembly (13-1, 13-2)
52) Attach CNE317 Vertical Fin to the Tail Gearbox left side using the
included M2x7.5 Self Tapping Screws. Finish assembling the Tail
Gearbox by installing the M2x7 Machine Screw found in parts bag
CNE321 to the back end of the Tail Gearbox.
53) Attach the long arm of the Tail Pitch Lever to The Rudder Pushrod
using the M2x4 Machine Screw. Attach the short arm to the Tail
Pitch Slider Pin on the Tail Pitch Slider. Attach the center to the
Tail Pitch Lever Mount on the Tail Gearbox.
54) Assemble CNE324 Tail Blade Grips to the Tail Rotor Hub. Use
locktite on the included M2x6 Machine Screws to attach the Tail
Blade Grips into place. Attach the Tail Blade Grip Arms to the Tail
Pitch Slider Arms using the provided M2x6 Machine Screws.
55) Install CNE322 Tail Rotor Blades to the Tail Blade Grips using
the provided M2x7 Machine Screws. The curved (leading edge)
portion of the Tail Rotor Blades must turn clockwise when viewing
the helicopter from the right side.
10
Note) CNE209 is not used
until the 3D Pro 95% ARF
instruction manual.
After completing step 55 check over each
step for completeness and continue to the
3D Pro 95% ARF Instruction manual to set
up and install electronics.
Section 13: Tail Rotor Assembly
Bags Used:
CNE321, CNE317, CNE324, CNE322
Your new equipment is warranted to the original purchaser against manufacturer defects in material and workmanship for 30 days from
the date of purchase. During this period, Century Helicopter Products will repair or replace, at our discretion, any component that is
found to be factory defective at no cost to the purchaser. This warranty is limited to the original purchaser and is not transferable.
This warranty does not apply to any unit which has been improperly installed, mishandled, abused, or damaged in a crash, or to any unit
which has been repaired or altered by any unauthorized agencies. Under no circumstances will the buyer be entitled to consequential or
incidental damages. This limited warranty gives you specific legal rights. You also have other rights which may vary from state to state.
WARRANTY INFORMATION

Notes:
11

CNE324A
Precision CNC Tail
Blade Grip Set w/
Bearings
Clear Canopy & Decal
CNE327C
CNE323C
Carbon Fiber
Main Blades
CNE330
Micro 3D Pro
Blade Holder
CNE322C
Carbon Fiber
Tail Blades
Metal Flybar (2)
CNE304
3D Pro Main Blade Grips
CNE301
Motor Mount
CNE303
CNC Rotor Hub & Collar
Frame Holders
CNE310
Rear Rudder Servo Mounts
CNE307
3D Pro Head links
CNE309
Mast Tower
CNE311
Bottom Frame Plate
CNE316
CNE315
Main Shaft, Spacers & Collar
CNE312
Top Motor Plate
CNE314
3D Pro Swashplate Tail boom, Pushrod & Guides
CNE321
Battery Holders
CNE320
Tail Rotor Shaft Assembly
CNE317
3D Fins & Boom Supports
CNE319
Inner tail Crown Gear Tail Pitch Lever & Slider
CNE325
Landing Gear Set
CNE326
Main Rotor Blades
CNE322
Tail Rotor Blades
CNE324
Tail Blade Grip Set
with Bearings Tail Gear Box Set
CNE302
CNE306
Seesaw Assembly
Tail Drive Shaft Gears
CNE305
CNE308
CNE313
Tail Drive Shaft Set
CNE318 CNE323
Bottom Plate Flanged
Bearing (Flanged
3x6mm -1pc-)
CNE213F
CNE252
Lightning Brushless
Main Motor
Canopy & Decal
CNE327
Auto Rotation Hub & Gear
CNE250
CNE216
Antirotation Bracket
CNE201
Head Axle & Dampeners
CNE207
Flybar Paddles Main Shaft Bearings
(3x6mm -2pc-)
CNE213
Machined Metal
Swashplate
CNE259
Machined Metal Main
Rotor Blade Grips
(adjustable)
CNE258
CNE209A
Swashplate Links
Optional Items
Brushless Motor Heatsink
CNE361
Adjustable Head Link Set
CNE307A
Hardware Pack
CNE328
CNE327A
CNC Flybar Control
Arm Set
CNE260
CNE359-1
Steel Control Ball Set (5)
(for machined blade grips)
CNE258-1
Steel Control Ball Set (5)
(for machined swashplate)
Replacement & Option Parts
Carbon Fiber Canopy
for 3D Pro
Rear Gyro Mounting Plate
CNE329
CNE317A
Carbon Fin Set Curved design)
Carbon Fin Set (Angular design)
CNE317B
CNE064
Carbon Flybar
Paddles