Century Radikal G20 Instruction Manual

Kit Features:

Specifications:

Lightweight yet extremely strong G10 or carbon fiber frames.
High gloss large diameter 25mm tail boom with belt drive system.
Blade grips accommodate blades 12mm (LT) to 18mm (HD) blade roots.
300 mL fuel tank for long engine run time.
Convenient and easy access to spark plug.
Triple bearing supported blade grips and tail blade grips.
Machined center dual ball bearing swashplate for 120 degree CCPM.
Adjustable bell-hiller ratio allows tuning for preferred cyclic response (HD)
Tunable flight characteristics for stability or speed.

© 2010 Century Helicopter Products - All rights reserved.

Length: 1366mm
Height: 381mm
Width: 260mm
Main rotor diameter: 1435mm
Tail rotor diameter: 262mm
Main rotor blades: 600mm-640mm
Tail rotor blades: 95mm

Version 1.10

INTRODUCTION

Radikal Gasser

Thank You

Congratulations on the purchase of the latest Century Gasser series, the Radikal G20. You’re about to build one of the world’s first fully
functional 3D aerobatic helicopters powered by the Zenoah 20cc gasoline engine. Be sure to read through and follow the instructions
during the build.

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
responsibility of the owner to operate this product in a safe manner as it can inflict serious injury otherwise. It is recommended that if
you are in doubt of your abilities, seek assistance from experienced radio control modelers and associations. Keep loose items that can
get entangled in the rotor blades away for the main and tail blades, including loose clothing, hair, or other objects such as pencils and
screwdrivers. Especially keep your hands away from the rotor blades. As manufacturer, we assume no liability for the use of this product.

Flight Guidelines

Please note this checklist is not intended to be a replacement for the content included in this instruction manual. Although it can
be used as a quick start guide, we strongly suggest reading through this manual completely before proceeding.

Always turn the transmitter on first

Allow the gyro, and receiver to arm and initialize properly

Do a pre-flight check making sure all electronics are working and look for any mechanical issues

Fly the model

Land the model

Turn off the engine

Always turn the transmitter off last

General Guidelines

Apply thread lock to all metal to metal thread contact points. Do not apply CA (cyanoacrylate) glue or thread lock to ny-lock nuts (metal nuts
with plastic inserts). Diagrams indicated by bounding boxes for screws, bearings, etc. are illustrated at a 1-to-1 ratio. All other illustrations
are not drawn to scale. Throughout this manual, you will find building tips. Please follow the tips and use common sense when building.

Pre-assembly Information

Various assemblies have been pre-assembled however, only as a reference assembly. Final assembly is up to the user. Installation onto
the particular parts, screws and nuts required for each step are packaged in the same bag as the parts. Be careful when opening each
bag as not to lose any hardware. Care has been taken in filling and packing of each bag however mistakes do happen. If there is a parts
shortage or missing hardware please contact us at:

.launam eht fo snoitces eht ot dnopserroc hcihw ylbmessa fo esae rof deggab era strap tnenopmoc rojam eht lla ,tik eht gninepo nopU

Century Helicopter Products
1740-C Junction Ave.

San Jose, CA. 95112

www.centuryheli.com

Page 2

REQUIRED ITEMS

Radikal Gasser

6 CHANNEL

CCPM TRANSMITTER

(MINIMUM)

1.000

87 TO 92 OCTANE

GASOLINE

CN3070

20cc TORPEDO

GASSER TUNED

MUFFLER

600MM TO 660MM

MAIN ROTOR BLADES

DREMEL TOOL

OR SIMILAR

GYRO

1.000

20CC ZENOAH

GASOLINE ENGINE

SERVOS X 5

OIL/GREASE

NEEDLE NOSE

PLIERS

SYNTHETIC

6 CHANNEL RECEIVER

(MINIMUM)

RECEIVER BATTERY

ELECTRONIC

I G N I T I O N

BATTERY

2-STROKE

MOTOR OIL

CN2031

4-WAY WRENCH

HOBBY SCISSORS

SLOW &

Medium CA

GLUE

ZIP TIES

HEX DRIVERS

1.5, 2.0, 2.5, 3.0, 4.0, 5.0

Medium

(Medium)

THREAD-

LOCK

METRIC RULER OR

SIMILAR MEASURING

ACCURATECH BLADE BAL-

ANCER V.2

CN2034A

BALL LINK PLIERS

CN2017

DEVICE

CN2051

CN2050

PADDLE GAUGE

CN2027

G-FORCE PITCH GAUGE

CN2255

CONTROL ROD

SETUP GAUGE

HOBBY KNIFE

Warranty Period

Century Helicopter Products warranties that the Products purchased (the “Product”) will be free from defects in materials and workman­ship 30 days from the date of purchase by the Purchaser.

Limited Warranty

(a) This warranty is limited to the original customer (“Purchaser”) and is not transferable. REPAIR OR REPLACEMENT AS PROVIDED
UNDER THIS W ARRANTY I S THE EXCLUSIVE R EMEDY OF T HE PURCHASER. This warranty covers only those P roducts purchased
from an authorized Century Helicopter Products dealer. Third party transactions are not covered by this warranty. Proof of purchase is
required for warranty claims. Further, Century Helicopter Products reserves the right to change or modify this warranty without notice
and disclaims all other warranties, express or implied.
(b) Limitations- CENTURY HELICOPTER PRODUCT MAKES NO WARRANTY OR REPRESENTATION, EXPRESS OR IMPLIED, ABOUT NON­INFRINGEMENT, MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE OF THE PRODUCT. THE PURCHASER ACKNOWLEDG­ES THAT THEY ALONE HAVE DETERMINED THAT THE PRODUCT WILL SUITABLY MEET THE REQUIREMENTS OF THE PURCHASER’S
INTENDED USE.
(c) Purchaser Remedy- Century Helicopter Products’s sole obligation hereunder shall be t hat Century Helicopter Products will, at its
option, (i) repair or (ii) replace, any Product determined by Century Helicopter Products to be defective. In the event of a defect, these
are the Purchaser’s e xclusive remedies. Century Helicopter Products reserves the right to inspect any and a ll equipment involved in
a warranty claim. Repair or replacement decisions are at the sole discretion of Century Helicopter Products. This warranty does not
cover cosmetic damage or damage due to acts of God, accident, misuse, abuse, negligence, commercial use, or modification of or to any
part of the Product. This warranty does not cover damage due to improper installation, operation, maintenance, or attempted repair by
anyone other than Century Helicopter Products. Return of any goods by Purchaser must be approved by Century Helicopter Product s
before shipment.

Page 3

AMA RULES & REGULATIONS

Radikal Gasser

General

1) I will not fly my model aircraft in sanctioned events, air shows or model flying demonstrations until it has been proven to be airwor­thy by having been previously, successfully flight tested.

2) I will not fly my model higher than approximately 400 feet within 3 miles of an airport without notifying the airport operator. I will
give right-of-way and avoid flying in the proximity of full-scale aircraft. Where necessary, an observer shall be utilized to supervise flying
to avoid having models fly in the proximity of full-scale aircraft.

3) Where established, I will abide by the safety rules for the flying site I use, and I will not willfully or deliberately fly my models in a
careless, reckless and/or dangerous manner.

4) The maximum takeoff weight of a model is 55 pounds, except models flown under Experimental Aircraft rules.

5) I will not fly my model unless it is identified with my name and address or AMA number on or in the model. (This does not apply to
models while being flown indoors.)

6) I will not operate models with metal-bladed propellers or with gaseous boosts, in which gases other than air enter their internal
combustion engine(s); nor will I operate models with extremely hazardous fuels such as those containing tetranitromethane or hy­drazine.

Radio Control

1) I will have completed a successful radio equipment ground range check before the first flight of a new or repaired model.

2) I will not fly my model aircraft in the presence of spectators until I become a qualified flier, unless assisted by an experienced helper.

3) At all flying sites a straight or curved line(s) must be established in front of which all flying takes place with the other side for
spectators. Only personnel involved with flying the aircraft are allowed at or in front of the flight line. Intentional flying behind the flight
line is prohibited.

4) I will operate my model using only radio control frequencies currently allowed by the Federal Communications Commission. (Only
properly licensed Amateurs are authorized to operate equipment on Amateur Band frequencies.)

5) Flying sites separated by three miles or more are considered safe from site-to site interference, even when both sites use the
same frequencies. Any circumstances under three miles separation require a frequency management arrangement, which may be
either an allocation of specific frequencies for each site or testing to determine that freedom from interference exists. Allocation
plans or interference test reports shall be signed by the parties involved and provided to AMA Headquarters. Documents of agree­ment and reports may exist between

(1) Two or more AMA Chartered Clubs, (2) AMA clubs and individual AMA members not associated with AMA Clubs, or (3) two or
more individual AMA members.

6) For Combat, distance between combat engagement line and spectator line will be 500 feet per cubic inch of engine displacement.
(Example: .40 engine = 200 feet.); electric motors will be based on equivalent combustion engine size. Additional safety requirements
will be per the RC Combat section of the current Competition Regulations.

7) At air shows or model flying demonstrations, a single straight line must be established, one side of which is for flying, with the
other side for spectators.

8) With the exception of events flown under AMA Competition rules, after launch, except for pilots or helpers being used, no powered
model may be flown closer than 25 feet to any person.

9) Under no circumstances may a pilot or other person touch a powered model in flight.

Page 4

HEAD ASSEMBLY (HD VERSION)

Radikal Gasser

BAG 1

Do not open all the bags prior to starting assembly. Open the bags step by step as you go through the instruction manual. The
components are bagged to make assembly easier. The next few pages will pertain to the assembly of the head. Please follow
the instructions based on the head type you own. Make sure to apply threadlock to any screws going into metal.

Take special care when pressing in these bearings. Do not

Insert one ball bearing into each bearing cup and insert into
the offset plate. Apply one small drop of slow cyanoacrylate
glue (Slow CA) to the joint between the backside of the
bearing cup and the offset plate. Insert one ball
bearing into each tie bar. Using an available
M3 socket cap screw, form threads
into both ends of the tie
bars. Insert one
M3x6 button head
screw through
the right side
hole of the
offset plate
and thread
into one
tie bar.

4

bar bearing, slide one steel spacer

and carefully apply Medium threadlock to

5

6

the exposed threads and insert into the right

side of the head block. Do not overtighten. Repeat

for the second sub-assembly. Once complete apply

a small amount of slow cyanoacrylate glue and insert one

CNLR1020 special long thread ball into each offset plate to com-

plete the assembly.

7

press in on the inner sleeve of the bearing

1

M a k e

t w o

2

i d e n t i c a l

s u b a s s e m -

blies . Note that

3

the bearing cups face

outwards from the head

block. Insert one M3x14 but-

ton head screw through the tie

CNLR1017 L=6.5MM

CNM3X14BHCS

CNM3X6BHCS

CNM2.5X8CS

CNBB0730

CNBB0840

8

Do not secure all the screws until lining up the
components in the following steps.

HI3167G

9

10

No.

1

2

3

4

5

6

7

8

9

10

Part #

CNLR1017

HI3167B

CNBB0730

HI3167G

CNM3X6BHCS

CNBB0840

HI6160A

HI3167G

CNM3X14BHCS

CNM2.5X8CS

Stainless Ball, 3mm Thread, Medium(M3球头螺丝)

Seesaw Offset Plates( 平衡杆固定片)

3x7x3 Ball Bearing( 轴承)

Seesaw Tie Bar Set( 平衡杆控制臂)

M3x6 Button Head Cap Screws( 伞头螺丝)

4x8x3 Ball Bearing( 轴承)

NX Rotor Head Yoke(主旋翼中心座)

3x5x6 Seesaw Tie Bar Set( 铁套)

M3x14 Button Head Cap Screws( 伞头螺丝)

M2.5x8 Cap Screws( 杯头螺丝)

Description

Qty

2

2

2

2

2

2

1

2

2

2

Page 5

HEAD ASSEMBLY (LT VERSION)

Radikal Gasser

BAG 1

Do not open all the bags prior to starting assembly. Open the bags step by step as you go through the instruction manual. The
components are bagged to make assembly easier. The next few pages will pertain to the assembly of the head. Please follow
the instructions based on the head type you own. Make sure to apply threadlock to any screws going into metal.

Take special care when pressing in these bearings. Do not

Insert one ball bearing into each bearing cup and insert into
the offset plate. Apply one small drop of slow cyanoacrylate
glue (Slow CA) to the joint between the backside of the
bearing cup and the offset plate. Insert one ball
bearing into each tie bar. Using an available
M3 socket cap screw, form threads
into both ends of the tie
bars. Insert one
M3x6 button head

5

6

screw through
the right side
hole of the
offset plate
and thread
into one

4

3

tie bar.

bearing, slide one steel spacer and care-

fully apply Medium threadlock to the exposed

2

1

threads and insert into the right side of the head

block. Do not overtighten. Repeat for the second

sub-assembly. Once complete apply a small amount of

slow cyanoacrylate glue and insert one CNLR1020 special

long thread ball into each offset plate to complete the assembly.

face outwards from the head

block. Insert one M3x14 but-

ton head screw through the tie bar

press in on the inner sleeve of the bearing

7

Make two identical

subassemblies . Note

that the bearing cups

9

3x5x7.5

CNM3x6BHCS

CNBB37

CNBB48

CNLR1017 L=6.5MM

CNM3x14BHCS

No.

CNM3x6BHCS

1

CNBB48

2

CNLR1017

3

HI3167B

4

CNBB0730

5

HI3167G

6

HI3167S

7

CNM3x14BHCS

8

HI6160A

9

Part #

8

Do not secure all the screws until lining up the
components in the following steps.

Description

Button Head Screw( 圆头螺丝)M3x6

Bearing(滚珠轴承)4x8x3

Stainless Ball, 3mm Thread, Medium(M3球头螺丝)

Seesaw Offset Plate(平衡杆控制器)

Bearing(滚珠轴承)3x7x3

Seesaw Offset Plate 2(平衡杆控制器2)

3x5x7.5 Seesaw Tie Bar Set(

Button Head Screw( 圆头内六角螺丝)M3x14

Head Block(主旋翼中心座)

铁套)

Qty

2

2

2

2

2

2

2

2

1

Page 6

HEAD ASSEMBLY (HD VERSION)

BAG 1

Pushrod assembly (parts 2 through 4) is already assembled but check that the length is
actually 43mm (center to center). As the pushrods are built and installed they should be
checked for tightness. Press one ball link onto each double studded steel ball, making sure
that pressure is applied from the side of the ball link with circle mark. While holding one fly­bar control arm, apply a small amount of slow cyanoacrylate glue and thread one end of the
double studded steel ball into each standoff. When it becomes difficult to turn with fingers,
apply slow CA to the threads and start screwing in the tapered control arm stand-off on
the other end of the ball. Slide and center the flybar through the head assembly. Care­fully look at the flybar control arm assemblies from the previous step and notice
that when installed correctly, the securing set screw is on top. Insert one
M4x6x0.5 micro washer #CNLR1006 against each bearing then slide
the control arm halves onto each side, so that they match togeth­er and the set screw remains on top. Insert one M3x12 but­ton head socket screw to secure the opposite standoff.
Hold the tapered standoff using pliers while tight­ening the screw as the rotor head
rotates clockwise.

9

8

10

1

Radikal Gasser

6

Apply a small amount of cya-

noacrylate glue to the special

5

4

All ball links are molded to be in-

3

stalled in only one direction. Look
carefully at the hole for the ball
as that side is 1mm larger .

2

long thread ball.

7

C

A

CNM3X12BHCS

CNM4X5SS

HW3176C

Loosely tighten the M4x5 set screws into the round aluminum inserts aligned with the flat spots on the flybar. Tighten both set screws, one
at a time using Medium threadlock. Make a pencil mark 5mm past the threads on both ends of the flybar. Thread the flybar paddles onto the
flybar until the mark is reached and align the paddles parallel. Again using the ruler, rotate one paddle or the other to get equal distances while
remembering the leading edge of the paddles turn clockwise.

No.

HI3176C

1

HI6145

2

HW6192

3

4

HI3176C

5

HI3176C

CNM3X12BHCS

6

HI6179B

7

HW3173A

8

CNM4X5SS

9

CNLR1006

10

Part #

Description

Flybar Arms(

Ball Link Set(球头连接头)

Pushrod Set( 拉杆)

Flybar Arms(

Flybar Arms(

M3x12 Button Head Cap Screws( 圆头螺丝)

Flybar Paddles( 平衡翼)

4mm Flybar 500mm(

M4x5 Socket Head Set Screw( 无头内六角螺丝)

M4X6X0.5 Washer( 平面垫片)

平衡翼控制臂)

球头双牙螺丝)

平衡翼控制臂)

平衡杆)

Make sure the distance on
both sides are equal

Qty

2

2

2

2

2

2

2

1

2

2

NOTICE SIZE OF HOLES ON BALL LINKS

THE SIDE WITH THE SMALLER HOLE
SHOULD FACE OUTWARDS

Make sure the distance on
both sides are equal

Page 7

HEAD ASSEMBLY (LT VERSION)

BAG 1

Pushrod assembly (parts 2 through 4) is already assembled but check that the length is
actually 43mm (center to center). As the pushrods are built and installed they should be
checked for tightness. Press one ball link onto each double studded steel ball, making sure
that pressure is applied from the side of the ball link with circle mark. While holding one
flybar control arm, apply a small amount of slow cyanoacry­late glue and thread one end of the double studded steel ball
into each standoff. When it becomes difficult to turn with fin­gers, apply slow CA to the threads and start screwing in the
tapered control arm stand-off on the other end of the ball.
Slide and center the flybar through the head assembly. Care­fully look at the flybar control arm assemblies from the previ­ous step and notice that when installed correctly, the secur­ing set screw is on top. Insert one M4x6x0.5 micro washer
#CNLR1006 against each bearing then slide the control
arm halves onto each side, so that
they match together and the set
screw remains on top. Insert one
M3x12 button head socket screw

8

to secure the opposite standoff.
Hold the tapered standoff using
pliers while tightening the screw
as the rotor head rotates clock-

9

wise.

10

6

7

1

Radikal Gasser

5

4

3

2

C

A

CNM3X12BHCS

CNM4X5SS

HW3176C

Loosely tighten the M4x5 set screws into the round aluminum inserts aligned with the flat spots on the flybar. Tighten both set screws, one
at a time using Medium threadlock. Make a pencil mark 5mm past the threads on both ends of the flybar. Thread the flybar paddles onto the
flybar until the mark is reached and align the paddles parallel. Again using the ruler, rotate one paddle or the other to get equal distances while
remembering the leading edge of the paddles turn clockwise.

NOTICE SIZE OF HOLES ON BALL LINKS

THE SIDE WITH THE SMALLER HOLE
SHOULD FACE OUTWARDS

Make sure the distance on
both sides are equal

No.

HI3167C

1

HI6145

2

Hw6192

3

HI3167C

4

CNLR1006

5

CNM4X5SS

6

HI3167C

7

CNM3X12BHCS

8

HW6173A

9

HI6179B

10

Part #

Seesaw Tie Bars( 稳定翼控制臂)

Ball Link Set(26 Long,4 Short)( 球头连接头)

Pushkod Set(拉杆)

M3 Two-tooth Screw Ball( M3球头双牙螺丝)

Washer 4x6x0.5( 平面垫片)

M4x5 Socket Head Set Screw (无头内六角螺丝)

Seesaw Tie Bars( 平衡杆控制臂)

M3x12 Button Head Cap Screws( 圆头内六角螺丝)

4mm FLYBAR 500mm

Flybar Paddles( 平衡片)

Make sure the distance on
both sides are equal

Description

(平衡杆)

Qty

2

4

2

2

2

2

2

2

1

2

Page 8

HEAD ASSEMBLY (HD VERSION)

BAG 1

BELL MIXER RATIOS STYLE

BELL MIXER RATIOS STYLE

3D1:1.6

1:1.3

1:1

Using an available M3 screw, carefully form the
threads in the blade grip arm. Slide the M3x18
special socket shoulder screw through the bell
mixer arm from the flat side, add one M3x5x3
spacer and apply a drop of Slow Cyanoacrylate
glue or Epoxy glue to the end of the threads
before installing into the blade grip. Tight­en the bolt until there is no end to
end movement, but do not
overtighten the bolt as
you can strip out the
hole. Make two as­semblies.

THRUST BEARING INSTALLATION GUIDE

SIDE PROFILE - BLADE GRIP

LARGER ID TOWARDS THE GRIP

3D & SPORT

SPORT & FAI

GROOVES INSIDE

RECESSED CREVICE FACES MAIN SHAFT

7

Do not over­tighten as you
can strip the
blade grip.

Press one M3x7 flanged ball
bearing into one side followed
by one M3x5 spacer and another
flanged bearing from the opposite side.
If the bearing is tight, lightly sand the bell
mixer and use Red threadlock to bond the
bearing in place. Install the CNLR1014 short
steel ball into the single hole side of the bell mixer
and install the CNLR1020 medium steel ball using
Blue threadlock. Install the medium steel ball accord­ing to the table to suit your flying preference. Use the
center hole for sport flying. Make two assemblies.

Radikal Gasser

There are two types of dampeners provided. The hard black plastic dampeners
(HI6520A) should only be used for hard 3D flying. Press in the head dampers
into the rotor head block. Lubricate the inside surface of each damper with light
oil. Press one M8x16 ball bearing into both ends of each main rotor blade grip.

Slide one M14 thrust washer against the bearing closest

to the main rotor blade. Make sure that the bearing and

the thrust washer are properly seated into the deep

end of the blade grip. If necessary use a socket

that matches the outside diameter of the

bearing and press into position. The 8x13

washer/spacer (#15) is used to adjust

tightness of the head. If the head is

binding after tightening the M5

bolt (#6), remove one or more

spacers from each side. Make

two assemblies.

16

1

2

9

8

7

6

3

5

4

13

12

17

14

11

15

10

HW6205

CNLR1020

CNBB0730

CNLR1014

CNM5X10CS

HW6182
8X13

HW6180A

No No.

Part # Part #

1

2

3

4

5

6

7
8
9

HI6189

HW6205

CNLR1020

CNBB0730

CNLR1014

CNM5X10CS

HW6180A

CNBB715T

HW6183

Enhanced Metal Bell Mixer Set

A

M3x5x3 Spacer

Stainless Ball, 3mm Thread, Medium

3x7x3 Ball Bearing

Stainless Ball, 3mm Thread, Short

M5x10 Socket Head Cap Screws

M5x10x1 Feathering Shaft with Center Ball

7x15x5 Blade Grip Thrust Ball Bearing

M5x8x15 Head Shim Set

Descriptio Description n

(垫圈)

(轴承)

(主桨控制臂)

(有头内六角螺丝)

(平面垫片)

(M3球头螺丝)

(M3球头螺丝)

(垫圈)

(止推轴承)

2

2

2

4

2

2

2

2

2

10
11
12
13
14
15
16
17
17

CNBB816

HI6184A

HW6205

CNM3x18CS

HW6182

HW6182

CNBB816

HI6181B

HI6181A

CNBB715T

HW6182
8X15

8x16x5 Bearing

NX Main Rotor Blade Grips

M3x5x3 Spacer

M3x18 Socket Head Cap Screws

8x15 Head Shim Set

8x13 Head Shim Set

8x16x5 Bearing

Hard Head Dampeners Black

Standard Head Dampeners Red

(轴承)

(垫圈)

(轴承)

(主旋翼夹片)

(平面垫片)

(平面垫片)

CNBB816

HW6183

M5X8X15

CNM3X6BHCS

(有头内六角螺丝)

M3X18CS

QtQt yy

4

2

2

2

2

6

4

2

2

Page 9

HEAD ASSEMBLY (LT VERSION)

Radikal Gasser

BAG 1

Do not over­tighten as you
can strip the
blade grip.

Press one M3x7 ball bear­ing into one side followed by one
M3x5 spacer and another flanged
bearing from the opposite side. Install the
CNLR1014 short steel ball into one side of the
bell mixer and install the CNLR1020 medium steel
ball on the opposite side. Secure using

rylate glue. Make two assemblies.

15

Slow Cyanoac-

Press in the head dampers into the rotor head block. Lubricate the inside surface
of each damper with light oil. Press one M9X13 flat washer into the end of each
blade grip. If necessary use a socket that matches the diameter of the washer
and press into position. Then press in one M7X13 ball bearing into both ends
of each main rotor blade grip. Slide one M9 thrust washer against the bear­ing closest to the main rotor blade. Make sure that the bearing and the thrust
washer are properly seated into the deep end of the blade grip. If necessary use

8

a socket that matches the outside diameter of the bearing and press into posi-

tion. Torque down on the M5 locknut (#1) until snug making sure the grip

7

still turns without binding. If you tighten down too much, you will crush

6

the thrust bearings. If this happens, you will need to replace the

thrust bearings. Make two assemblies.

3

Do not apply threadlock to
the nylock nut!

5

4

3

9

2

1

10

11

13

12

14

THRUST BEARING INSTALLATION GUIDE

GROOVES INSIDE

C

M3 CNLR1016A

9x13x1

CNM5LOCK

3x5x0.5

3x5x3

CNBB0730

A

Using an available M3 screw, carefully form the
threads in the blade grip arm. Slide the M3x18
button head cap screw through the bell mixer arm
from the flat side, add one M3x5x0.5 micro washer
and apply a drop of Slow Cyanoacrylate glue to the
end of the threads before installing into the blade
grip. Tighten the bolt until there is no end to end
movement, but do not overtighten the bolt as you
can strip out the hole. Make two assemblies.

CNM3x14BHSC

M3 CNLR1014

CNBB1370T

CNBB1360

SIDE PROFILE - BLADE GRIP

LARGER ID TOWARDS THE GRIP

RECESSED CREVICE FACES MAIN SHAFT

Red dampener is used for normal flight #HI6181A. Black
dampeners are used for 3D flight #HI6181B.

No.

CNM5LOCK

1

CNBB1370T

2

CNM9X13FW

3

CNBB1370

4

HI3184

5

HW6180S

6

HI6181B

7

8

HW6180C

CNLR1003

9

10

CNBB0730

11

HW6205

12

CNLR1014

HI3189A

13

14

CNM3x14BHSC

15

CNLR1016A

Part #

M5 Locknut(M5 防松螺母)

Thrust Ball Bearing( 止推轴承)7x13x4.5

Washer(垫片)9x13x1

Bearing(滚珠轴承)7x13x4

Main Rotor Blade Grip(主桨夹片)

Spacer(铝套)

Dampener Rubber(橡胶圈)

7mm Feathering S haft( 横轴)

Washer(垫片)3x5x0.5

Bearing(滚珠轴承)3x7x3

Spacer(铁套)3x5x3

M3 Linkage Ball(M3 球头螺丝牙长3.5mm)

Bell Mixer Arm( 混控臂)

Buton Head Socket Screw( 圆头内六角螺丝)M3x14

M3 Long Linkage Ball(M3 球头螺丝球头12mm)

Description

Qty

2

2

8

4

2

2

2

1

2

4

2

2

2

2

2

Page 10

HEAD ASSEMBLY (HD VERSION)

BAG 1

Slide the washout guide and the rotor head onto
the main shaft. Insert the M4x22 shoulder socket
cap screw through the rotor head hub and main
shaft and secure with one M4 locknut, torque
down the screw. Apply Medium threadlock to the
M2.5x8 socket cap screws and tighten into the
bottom of the rotor head block to clamp against
the main shaft, do not over torque. Position the
washout guide against the collar and align one
hole to the vertical slot in the rotor head. Apply
Medium threadlock to the M3x4 set screws and
evenly tighten set screws in place.

5

6

Radikal Gasser

Do not apply CA or
thread lock to lock nut!

4

M3x4

M4防松螺母

3

2

1

Do not over-tighten!

M2.5x8

M4x22

No.

Part #

1

HI6153

CNM3x4SS

2

3

HW6053A

4

CNM4LOCK

CNM4x22CS

5

CNM2.5x8CS

6

Page 11

Description

Aluminum Washout Guide( 剪型臂导柱)

M3x4 Socket Head Set Screw( 无头内六角螺丝)

10mm Main Shaft( 主轴)

M4 Lock-nut(M4 螺母)

M4x22 Cap Screws( 杯头内六角螺丝)

Cap Screw(杯头内六角螺丝)M2.5x8

Qty

1

2

1

1

1

2

HEAD ASSEMBLY (LT VERSION)

BAG 1

Slide the washout guide and the rotor head onto
the main shaft. Insert the M3X18 shoulder
socket cap screw through the rotor head
hub and main shaft and secure with one
M3 locknut, torque down the screw. Apply
Medium threadlock to the M2.5x8 sock­et cap screws and tighten into the bot­tom of the rotor head block to clamp
against the main shaft, do not over­torque. Position the washout guide
against the collar and align one
hole to the vertical slot in the rotor
head. Apply Medium threadlock to
the M3x4 set screws and evenly
tighten set screws in place.

3

Do not apply CA or
thread lock to lock nut

Radikal Gasser

1

Do not over-tighten!

2

4

6

5

CNM3x4SS

CNM2.5x8CS

CNM3x18CS

CNM3LOCK

Page 12

No.

1

2

3

4

5

6

Part #

CNM2.5x8CS

CNM3x18CS

CNM3LOCK

HW3053B

CNM3x4SS

HI6153

Description

Cap Screw(杯头内六角螺丝)M2.5x8

Cap Screw(杯头内六角螺丝)M3x18

M3 Locknut(防松螺母)

Main Shaft(主旋翼轴)

Set Screw(无头内六角螺丝)M3x4

CNC Washout Guide(剪型臂滑座)

Qty

2

1

1

1

2

1

WASHOUT AND SWASHPLATE

Radikal Gasser

BAG 1

1

M3 L=7.8MM CNLR1014

2

3

M3X5X3 HW6205

4

5

7

CNBB0730

6

8

9

10

M10x12x5 HI3152C

M3x5x0.5 CNLR1003

CNM3x16BHCS

M3 L=18MM

Ø2x12

Comes pre-assembled

It is up to you to determine whether this assembly is correct. Please make
sure to check it prior to installation.

No.

HI3152A

1

CNLR1014

2

HW6205

3

CNBB0730

4

HI3152A

5

HI3152A

6

7

HI3152C

CNLR1003

8

9

CNM3x16BHCS

CNLR1014

10

CNLR1021

11

12

HW6146C

Part #

Washout Set (10mm) (

M3 Ball Link(M3球头螺丝)

3x5x3 Bellcrank Spacer(铜套)

3x7x3 Bearing(轴承)

Radius Link w/ Pin(插销)

Radius Link w/ Pin(三角控制臂)

Washout Set (控制臂固定座)

3x5x0.5 Micro Washer(

M3x16 Button Head Cap Screws(

M3 Ball Link(M3球头螺丝)

M3 Ball Link L=18MM(M3球头螺丝)

Radikal Swashplate(十字盘)

Description

摆臂)

)

垫圈

圆头内六角螺丝

Qty

2

2

2

4

2

2

1

2

)

2

4

2

1

Starting with the inside race, apply Medium thread­lock to the silver steel balls and attach them across
from each other. The balls need to be started by
hand then tightened with an M2.0 hex key. Insert the
other two steel balls across from each other using
Medium threadlock. Install three long steel balls on
the outer arms using Slow Cyanoacrylate glue.

10

Page 13

11

12