SECTION 7: ROTOR HEAD
Bag 7
7-1 MAIN ROTOR HUB ASSEMBLY
No. Bag# Description
Qty No. Bag# Description
Qty
1 7 Main Blade Grip*
2
9
HB
M3X5X3 Spacer
2
2
7
Pitch Arm**
2
10
7
Head Spindle Spacer
2
3 7 Center
Hub
1 11 7 Thrust
Bearing
Spacer
2
4
7 Hiller
Arm
2
12
7
8x16x5 Thrust Bearing
2
5
7
Head Spindle
1
13
7
M4 x8 Flange Cap Head Bolt
2
6 7 Dampener
O-Ring
4
14
7
8x16x5 Regular Bearing
4
7 HB
M3x7 Pivot Ball Stud(1)
2
15
HB
M3x12 Cap Head Bolt(2)
2
8 HB
M3x10 Cap Head Bolt**
4
*Sport version: plastic
**Sport version: Pitch Arms is built in the Main Blade Grips so there is no M3x10
Cap Head Bolts
(1) or four M3x4 Pivot Ball Studs; (2) or two M3x14 Cap Head Bolts
Note: Some Center Hubs are designed for one O-ring each side. If this is your case, use
one O-ring each side. The beveled edge of the Thrust Bearing Spacer (No. 11) should
be face away from the Center Hub. The flanges of the bearings of the Hiller Arms should
face outside. Usually the Thrust Bearing has three parts: two race washers and caged
ball bearings. The caged ball bearings will be between two race washers. In some cases,
you may get different version of the Thrust Bearing: one race washer, one flat washer,
and caged ball bearings in your kit. That is fine; it still works the same. In this case, you
need to install the flat washer first (next to Thrust Bearing Spacer-No. 11), then the
caged ball bearings, the race washer goes last.
Page 61 of 85
Содержание Big Bertha 69
Страница 1: ...Page 1 of 85 ...
Страница 7: ...Page 7 of 85 REQUIRED TOOLS ...
Страница 8: ...HARDWARE OPTIONAL ACCESSORIES GLUES AND THREAD LOCK COMPOUNDS RADIO MOUNTING ACCESSORIES Page 8 of 85 ...
Страница 13: ...Page 13 of 85 SECTION 1 UPPER FRAMES Bag 1 ...
Страница 19: ...Note Bearing Blocks shown may look differently Page 19 of 85 ...
Страница 28: ...Page 28 of 85 ...
Страница 29: ...Page 29 of 85 SECTION 2 LOWER FRAMES Bag 2 ...
Страница 32: ...Page 32 of 85 ...
Страница 35: ...Page 35 of 85 ...
Страница 36: ...Note Frame shown in the drawing may look differently Page 36 of 85 ...
Страница 38: ...Note Fan Hub Assy may look differently Page 38 of 85 ...
Страница 39: ...Page 39 of 85 Note Engine Mount may look differently from the one in the kit ...
Страница 42: ...Page 42 of 85 SECTION 3 LANDING GEAR ASSEMBLY Bag 3 ...
Страница 44: ...Page 44 of 85 ...
Страница 45: ...Page 45 of 85 SECTION 4 DRIVING SYSTEM Bag 4 ...
Страница 48: ...SECTION 5 TAIL ASSEMBLY Bag 5 Tail Rotor shown may look differently Page 48 of 85 ...
Страница 54: ...OR Page 54 of 85 ...
Страница 56: ...SECTION 6 CONTROL SYSTEMS Bag 6 Page 56 of 85 ...
Страница 58: ...Page 58 of 85 ...
Страница 67: ...Page 67 of 85 ...
Страница 68: ...Note the frame may look differently from the one in the kit Page 68 of 85 ...
Страница 70: ...Page 70 of 85 ...