Century Radikal G20 Instruction Manual page 10

HEAD ASSEMBLY (LT VERSION)
BAG 1
Press one M3x7 ball bear-
ing 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.
M3 CNLR1016A
9x13x1
CNM5LOCK
3x5x0.5
3x5x3
CNBB0730
8
Do not over-
tighten as you
can strip the
blade grip.
15
14
Slow Cyanoac-
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
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 bear-
ing 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 posi-
tion. Torque down on the M5 locknut (#1) until snug making sure the grip
still turns without binding. If you tighten down too much, you will crush
7
the thrust bearings. If this happens, you will need to replace the
6
thrust bearings. Make two assemblies.
3
9
10
11
13
12
THRUST BEARING INSTALLATION GUIDE
SIDE PROFILE - BLADE GRIP
Red dampener is used for normal flight #HI6181A. Black
dampeners are used for 3D flight #HI6181B.
No.
Part #
CNM5LOCK
1
2 CNBB1370T
CNM9X13FW
3
4 CNBB1370
HI3184
5
HW6180S
6
7 HI6181B
8
HW6180C
CNLR1003
9
10 CNBB0730
11
HW6205
12
CNLR1014
HI3189A
13
14 CNM3x14BHSC
15 CNLR1016A
Page 10
Radikal Gasser
Do not apply threadlock to
the nylock nut!
5
4
GROOVES INSIDE
LARGER ID TOWARDS THE GRIP
RECESSED CREVICE FACES MAIN SHAFT
Description
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)
3
2
1
Qty
2
2
8
4
2
2
2
1
2
4
2
2
2
2
2