This document provides specifications and construction plans for building a homebuilt helicopter called the Furia. The main details include: - Main rotor diameter of 19 feet and tail rotor diameter of 3.6 feet - Maximum gross weight of 700 pounds and empty weight of 325 pounds - Single seat capacity with a maximum speed of 95 mph and service ceiling of 12,500 feet - Powered by a 65hp Rotax engine and has a fuel capacity of 8 gallons The document includes diagrams of the helicopter systems and components as well as a parts list.

1. FURIA
HOMEBUILT HELICOPTER
CONSTRUCTION PLANS
Specifications
Main Rotor Diameter: 19 ft.
Tail Rotor Diameter: 3.6 ft.
Height: 6.9 ft.
Lenght: 12.5 ft.
Max Gross Wt.: 700 lbs.
Empty W.: 325 lbs.
Payload (with full fuel) 350 lbs.
Fuel Capacity: 8 gal.
Seats: 1
Range: 80 sm.
Takeoff distance: 0 ft.
Landing Distance: 0 ft.
Vmax: 95 mph (max allowable speed
-level flight sea level, std. Day)
Vcr: 70 mph
Climb rate @ msl: 1.100 fpm
Service Ceiling: 12.500 ft
Engine: Rotax 65 hp
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A-17-1
FURIA HELICOPTER PERSPECTIVE VIEW
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COPYRIGHT©2001 Osvaldo Durana
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2. SIDE VIEW
OSVALDO DURANA
TOP VIEW
FURIA HELICOPTER TOP AND SIDE VIEWS
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COPYRIGHT©2001 Osvaldo Durana
2

3. MAIN ROTOR HEAD
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FURIA HELICOPTER MAIN ROTOR HEAD
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COPYRIGHT©2001 Osvaldo Durana
3

4. PART LIST
-
Key number / Name / (Quantity)
17
18 19 20
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1
5
18
13
11
10
1 - Pivot head (2)
2 - Blade grip (4)
3 - Reinforcement strap (4)
4 - Bolt AN3 (2)
5 - Claw (4)
6 - Shell type bearing BK1514RS (2)
7 - Axle A (2)
8 - Elastic stop nut AN 364-1032 (2)
9 - Shell type bearing BK1522 (2)
10 - Thrust bea. AXW15 - (2)
washers AS1528 (2)
LS1528 (2)
6
7
9
16
2
3
12
11 - Axle B (2)
12 - Axle housing (2)
13 - Axle grip (2)
14 - Elastic stop nut AN 365-524 (4)
15 - Blade control horn (2)
16 - Center plates (3)
17 - Bolt AN3 (8)
18 - Bolt AN4 (8)
19 - Bolt AN3 (2)
20 - Bolt AN5 (4)
Not shown:
Elastic stop nuts AN 365-428 (8)
Elastic stop nuts AN 365-1032 (8)
3
4
5
6
7
8
10
5 9
11
13
14
12
3
2
15
FURIA HELICOPTER -
MAIN ROTOR HEAD ASSEMBLY
Plans Delivery.com
COPYRIGHT©2001 Osvaldo Durana
4

5. Blade Control Horn
Top View
Note: Upper blade grip and reinforcement strap have
been omited to show central plates and other
components.
Upper Blade Grip
A
A
Blade Control Horn
Section A-A
Upper Blade Grip
Reinforcement Strap
Pivot Head
Axle Grip
Axle Housing
Bearings from INA Catalog
INA BEARING COMPANY, INC.
One Ina Drive, Cheraw,
South Carolina 29520
Phone: (803) 537-9341
Side View
Claws
1
Axle
Reinforcement Strap
2
A
B
Shell Type Bearings
C
Axle
Center Plates
Thrust Bearings and washers
Bearings: A= Shell Type BK1514 RS (sealed) 2 Req’d. B= Shell Type BK1522 (2 Req’d.) C= Thrust (neddle roller) AX15 Washers AS 1528 and LS 1528 (2 of each one req’d)
FURIA HELICOPTER MAIN ROTOR HEAD
Plans Delivery.com
COPYRIGHT©2001 Osvaldo Durana
5

6. Key number / Name / (Quantity)
1
2
3
4
5
6
7
8
9
10
13
12
34
33
32
11
35 36
14
15
12
11
16
31
17
18
19
20
21
22
23
24
25
26
30
29
28
27
1) Blade control master horn
2) Control sliding axle
3) Ball
4) Shell type bearing HK 1522
5) Main rotor axle
6) Bearing cover
7) Bushing
8) Race / bushing
9) Pivot head
10) Center plates
11) Gasket
12) Bearing 7013
13) Main gear
14) Gearbox housing upper half
15) Gearbox housing lower half
16) Gearbox attachment ring
17) Race / nut
18) Ball / Bearing housing
19) Ball race
20) Nut B
21) Cyclic/Collective central link
22) Main rotor mast
23) Bearing 6002 Z
24) Nut A
25) Central uniball housing
26) Central Push-Pull tube
27) Pinion shaft
28) Gasket
29) Snap ring
30) Bearing 6205
31) Pinion housing
32) Push-Pull axle
33) Bushing
34) Pin
35) Pinion
36) Gearbox lid
FURIA HELICOPTER MAIN ROTOR AND GEARBOX
Plans Delivery.com
COPYRIGHT©2001 Osvaldo Durana
6

7. 3
4
5
6
7
Part List
Key number / name / Quantity
1
2
8
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12
1) Main rotor shaft
2) Main gear
3) Bolt AN3 (25)
4) Gearbox housing upper half
5) Gasket (3)
6) Bolt AN3 (10)
7) Gearbox lid
8) Ball bearing 7013 (2)
9) Gearbox housing lower half
10) Elastic stop nut AN 365-1032 (25)
11) Pinion
12) pInion shaft
13) Ball Bearing 6205 (2)
14) Pinion housing
15) Gaskets
Not shown:
*main shaft woodroff keys (3)
* Pinion housing internal snap ring.
9
13
14
13
15
10
5
FURIA HELICOPTER -
MAIN ROTOR GEARBOX ASSEMBLY
Plans Delivery.com
COPYRIGHT©2001 Osvaldo Durana
7

8. 8 5 6
7
Part List
6 5
Key number/name/quantity
12
1) Main rotor gearbox
2) Gearbox attachment ring
3) Bolt AN4 (6)
4) Main rotor mast
5) Bushing (2)
6) Bushing A ( 2)
7) Ball
8) Main rotor axle
9) Pin
10) Control sliding axle
11) Bushing
12) Push-Pull axle
13) Race-nut
14) Ball bearing housing
15) Bearing 600 Z (1)
16) Nut A
17) Nut B
18) Ball race
19) Central uniball housing
20 ) Elastic stop nut AN364-1032 (1)
21) Central Push-Pull tube
22) Bolt AN3 (1)
1
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14
15
10
16
11
17
12
18
19
2
20
3
4
21
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FURIA HELICOPTER -
MAIN GEARBOX/CONTROL SYS. ASSY.
Plans Delivery.com
COPYRIGHT©2001 Osvaldo Durana
8

9. Key number / Name / (Quantity)
1) Collective central push-pull tube
2) Main rotor tube mast
3) Cyclic push-pull tube
4) Bushing spacers (4)
5) Cyclic upper bellcranck (2)
6) Cotter pin (6)
7) Clevis pin AN394 (4)
8) Elastic stop nut AN364-428 (2)
9) Upper Bellcranck mounting bracket (2)
10) Rod end HMVV-4 (2)
11) Locking nut AN316-4R (2)
12) Control linkage (2)
13) Locking nut AN316-4L (2)
14) Rod end HMLVV-4 (2)
15) Clevis pin AN394 (2)
16) Cyclic/collective central link (1)
17) Bolt AN4 (2)
18) Bolt AN3 (8)
19) Bellcranks central bracket
20) elastic stop nut (not shown)
AN365-1032 (8)
9
8
7
10
11
12
13
14
6
4
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5
4
3
2
1
FURIA HELICOPTER CONTROL SYSTEM
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COPYRIGHT©2001 Osvaldo Durana
9

10. Cyclic control stick
Cyclic control push-pull tubes
(A and B)
Central push-pull tube
B
Spacer
Lever
Lateral stop
A
Torque tube
Bracket
Bellcranks mounting ring
Cyclic stick holder
Collective Linkage
Collective lower bellcranck
Nylon bushing
O
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A
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A
N
A
Travel limiting
stop
Collective control stick
Cyclic lower bellcrank
Cyclic control
Push-pull tube (fore-aft)
FURIA HELICOPTER CONTROL SYSTEM
Plans Delivery.com
COPYRIGHT©2001 Osvaldo Durana
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11. 40
39
38
37
3
2
1
35
34
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10
8
4
5
36
6
11
12
13
9
7
14
20
21
22
15
16
23
17
24
18
19
33
32
31
30
27
25
26
28
29
FURIA HELICOPTER TAIL ROTOR ASSEMBLY
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COPYRIGHT©2001 Osvaldo Durana
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12. 27
1
2
3
4
23
26
21
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23
24
25
20
5
19
6
7
8
18
9
13
10
11
12
14
16
17
15
FURIA HELICOPTER -
TAIL ROTOR GEARBOX ASSEMBLY
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COPYRIGHT©2001 Osvaldo Durana
12

13. Attach tail rotor hub here
1
23
22
21
19 20
3
6
2
18
17
16
13
7
8
9
10
13
11
14
15
3
2
4
6
11
12
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FURIA HELICOPTER -
TAIL ROTOR PITCH CONTROL ASSY.
Plans Delivery.com
COPYRIGHT©2001 Osvaldo Durana
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14. TAIL ROTOR GEARBOX
Part List - page 12
11
1) Pinion
2) Gasket
3) Bolt AN3
4) Flat Washer
5) Bearing Cover (Large)
6) Bearing 16005
7) Pitch Control Axle
8) Bolts AN3
9) Bolts AN3
10) Gearbox Lid
11) Gearbox Housing
12) Oil Screws
13) Bearing EE5
14) Bushing Spacer
15) Bolt AN3
16) Nut C
17) Gasket
18) Bolt AN3
19) Bearing Cover (Small)
20) Gearbox Rear Cap
21) Flat Washer
22) Bolts AN4
23) Bearing
24) Gasket
25) Nut D
26) Steel Bushing
27) Gear
13
TAIL ROTOR PITCH CONTROL
ASSEMBLY
TAIL ROTOR ASSEMBLY
Part List - page 11
Part List - Page 13
1) Tail Rotor Blade
2) Bolt AN3
3) Tail Blade Grip
4) Bearing 6200
5) Axle Nut
6) Bearing FAG 525277
7) Blade Grip Nut
8) O’Ring
9) Pitch Control Horn
10) Flat Washer
11) Elastic Stop Nut
12) Axle
13) Tail Rotor Hub
14) Axle Pivot Nut
15) Axle Pivot Screw
16) Pin
17) Pitch Control Head Guide
18) Retainer Nut
19) Safety Wire Spring
20) Bolt AN4
21) Conical Washer
22) Rod End Male HMLVV-4
23) Nut AN316-4R
24) Control Linkage
25) Nut AN316-4R
26) Rod End Male HMVV4
27) Flat Washer
28) Clevis Pin
29) Cotter Pin
30)Pitch Control Head
31) Flat Washer
32) Castle Nut
33) Cotter Pin
34) Elastic Stop Nut
35) Flat Washer
36) Bushing
37) Bolt AN4
38) Flat Washer
39) Flat Washer
40) Elastic Stop Nut
12
18) Bolt AN3
1) Tail Rotor Gearbox
19) Control Pulley
2) Scissors Hinge
20) Bolt AN3
3) Bolt AN3H
21) Flat Washer
4) Scissors B and Axle
22) Elastic Stop Nut AN365-428
5) Lever
23) Tail Boom
6) Scissors A
Not Shown: Bolts AN3H to attach
7) Bearing Housing
gearbox to tail boom
8) Bearing
9) Internal Snap Ring
10) Self Locking Castle Nut/Cotter Pin
11) Bolt AN3
12) Turnbuckle Assy. AN150-16L
13) Elastic Stop Nut AN364-1032
14) Pulley Arm
15) Bolt AN4
16) Control Cable Galvanized 1/8”-7x19
17) Cable Clamp
FURIA HELICOPTER PART LIST - PAGES 11-12-13
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COPYRIGHT©2001 Osvaldo Durana
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15. 4
1
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12
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Key number / Name / (Quantity)
1) Retaining washer (3)
2) Nylon bushing (3)
3) Internal bracket (3)
4) Elastic stop nut AN365-1032 (18)
5) Bolt AN3 (9)
6) Shaft ends (2)
7) Elastic stop nut AN364-428 (4)
8) Bolt AN4 (4)
9) Shaft
10) Raceway (3)
11) Tail boom tube
12) Bolt AN3 (9)
13) Inspection hole cover (3)
14) Sheet metal screws (6)
10
9
6
7
8
FURIA HELICOPTER TAIL BOOM SHAFT ASSY
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COPYRIGHT©2001 Osvaldo Durana
15

16. Main rotor mast
Upper control pulley
assembly
Directional control pedals
Central
Gearbox
Cable fairleads
DETAIL B
Tail boom
B
Control pulley
A
A
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Control pulley assembly
Tail rotor gearbox attach
here
FURIA HELICOPTER DETAIL A
CONTROL SYSTEM
Plans Delivery.com
COPYRIGHT©2001 Osvaldo Durana
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17. 13
14
12
17
16
11
1
8
7
2
6 5
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5’ 6’
15
9
3
Key number / Name / (Quantity)
10
10
4
6
6’
5
9
5’
7
10
1) Left control pedal
2) Right control pedal
3) Main lever
4) Bolt AN4-6A (2)
5) Rod ends male threaded HMVV-4 (2)
5’) Rod ends male threaded HMVV-4 left hand thd. (2)
6) Locking nut AN316-4R (thin check nut) (2)
6’) Locking nut AN316-4L (thin check nut) (2)
7) Control linkage
8) Bolt AN4-11A (2)
9) Conical safety washer (2)
10) Elastic stop nut AN364-428 (4)
11) Turnbuckle end AN669-S4 LH (2)
12) Barrel AN155-32S (2)
13) Pin eye AN165-32 SR (2)
14) Pedals axle
15) Clevis pin AN394-17 (2)
16) Cotter pin (2)
17) Flat washers (4)
FURIA HELICOPTER -
CONTROL SYSTEM - PEDAL ASSY
Plans Delivery.com
COPYRIGHT©2001 Osvaldo Durana
17

18. 19 dia 1.65 wall thk
SIDE VIEW
(3/4” Dia .065 wall Thk)
90
(3.54)
14.2 Dia 1.65 W.Thk.
(3/4” .065 W.Thk.)
720
(28.35)
14,3 D. 1,65
(9/16” Dia
.065 W.Thk)
250
(9.84)
320
(12.6)
460
(18.11)
1970
(77.55)
790
(31.10)
380
(14.96)
Material :4130 Steel tubing
340
(13.38)
TOP VIEW
22,2 Dia 1,65 Thk
(7/8” .065 Thk)
570
(22.44)
330
(13.0)
14,2 Dia.
1,65 W.Thk.
(3/4” .065)
740
(28.35)
12,7 Dia. 1,65 Thk
(1/2” Dia. .065)
250
(9.85)
1630
(64.17)
FURIA HELICOPTER PRIMARY STRUCTURE
Plans Delivery.com
COPYRIGHT©2001 Osvaldo Durana
18

19. REAR VIEW
PERSPECTIVE VIEW
A
A
A
TOP VIEW
DETAIL A
810
(31.89)
1500
(59.06)
Reinforcements
4130 Steel 2,3 (.090)
120
(4.72)
DETAIL B
Skids Caps
Mat: Aluminum 4 Req’d
40 Dia
(1-9/16”)
80
(3.15)
SECTION
A-A
O.D. 40 - 2,4 Wall Thickness 4130 Steel
(1-9/16” x .095 W.Thk)
Bevel
6 (.25)
1750
(68.90)
19
(3/4”)
840
(33.07)
To fit inside
skid tubes
B
50
(1.97)
410
(16.15)
R 240
(9.45)
SIDE VIEW
Weld all around
55
(2.18)
FURIA HELICOPTER LANDING GEAR SKIDS
Plans Delivery.com
COPYRIGHT©2001 Osvaldo Durana
19

20. DETAIL A
Rotor mast attachment brackets
Mat: 4130 Steel
2 (.080) Thk
Lenght 40 (1.57)
Inner ring
Mat: Steel (.198)
W.Thk
Pop Rivet ring in
proper position,
then drill and tap
according brackets
Tail boom
Main rotor mast
Bracket B
Bracket A
Drill and tap for AN4-H
Bolts 1/4” - 28
USE SAFETY WIRE
Tail skid
DETAIL C
Landing gear skid seat
Mat: 4130 Steel 2 (.080) Thk
4 req’d
A
DETAIL D
Pedals brackets mat: 4130 Steel 2
(.080) Thk 2 req’d
44
(1.732)
55
(2.165)
6.35 D
(.250)
22
(.866)
34
(1.338)
B
Flat washer
welded
125
(4.921)
16
(.630)
R 20 (.787)
6,35 D
(.250)
D
WELD TO STRUCTURE
36
(1.417)
C
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R 11
(.433)
DETAIL B
Rotor mast lower bracket
26 Dia
(1.024)
Attach landing gear skids with AN4 bolts
and elastic stop nuts
8 (.315)
Attach to bellcranks ring with AN5H bolts
2) 4130 Steel tubes
3/4” O.D.
.065 wall thk
USE SAFETY
WIRE
FURIA HELICOPTER PRIMARY STRUCTURE
Plans Delivery.com
COPYRIGHT©2001 Osvaldo Durana
20

21. 18
(.709)
Bracket A
18
(.709)
4,7 Dia (.185)
BRACKET B
9,5 Dia (.374)
2 (.080) Thk
6
(.23)
25,4
(1.0)
102
(4.0)
34
(1.34) REF
19
(.748)
Welded to
primary structure
102
(4.0)
70
(2.76)
approx.
Dia
,35 50)
6 2
(.
60
(2.36)
SIDE VIEW
REAR VIEW
SIDE VIEW
TAIL BOOM BRACKETS
TAIL BOOM TUBE
15,8 Dia
(5/8”)
Tail Skid
Side view
Material: 4130 Steel
12,7 Dia
(1/2”)
R 60
(2.36)
35 Degrees
975
(38.38)
FRONT VIEW
To fit aluminum tail
tubes
200
(7.87)
TAIL SKID (Tail rotor protector)
6
deg.
Material: 4130 steel tubes 0,8
(.035) Wall Thickness
575
(22.64)
Rear view
FURIA HELICOPTER TAIL BOOM
Plans Delivery.com
COPYRIGHT©2001 Osvaldo Durana
21

22. 25
(1.0)
100
(3.937)
500
(19.68)
25
(1.0)
45
Degree
1
300
(11.81)
160
(6.29)
4
4 (.157)
Holes
95
(3.74)
67 Dia
(2.64)
80 Dia
(3.15)
2
80
(3.15)
5
95
(3.74)
89 Dia
(3.504)
6
60 Dia
(2.64)
7
Suggested instruments
3
1- ALTIMETER
2- R.P.M.
3- AIRSPEED
4- IGNITION KEY
5- TURN and BANK
6- CYLINDER HEAD TEMP
7- EXHAUST GAS TEMP
250
(9.84)
Front View
75
Deg.
60
Deg.
400
(15.75)
Material: 3 (1.181) thk 6061-T6 aluminum
FURIA HELICOPTER INSTRUMENT PANEL
Plans Delivery.com
COPYRIGHT©2001 Osvaldo Durana
22

23. 18
(.708)
40
(1.575)
8 (.315)
40
(1.575)
6,35
(.250)
8
(.315)
40
(1.575)
BLADE GRIP
Blade Grip
Counterweight
5
(.187)
23
(.905)
39
(1.535)
23
(.905)
FULL SIZE
6
(.236)
5 (.197)
Mat: 1045 Steel
2 Req’d.
10
(.394)
8
(.315)
7,9 (.3125) for counterweight
mounting (on upper plates only)
R 2,5
(.0984)
6,35 (.250)
54
(2.126)
11
(.433)
29
(1.142)
FULL SIZE
54
(2.126)
32
(1.260)
12
(.472)
76
(2.992)
81
(3.20)
7,9 (.3125)
156
(6.142)
22
(.866)
20
(.787)
7,9 (.3125)
62
(2.441)
Bushing
R 10
(.394)
FULL SIZE
215
(8.464)
Mat: Steel tube
O.D. 1/2” I.D. 5/16” - (2) Req’d
FURIA HELICOPTER MAIN ROTOR COMPONENTS
Plans Delivery.com
COPYRIGHT©2001 Osvaldo Durana
23

24. 51
(2.007)
Center Plate
62
(2.441)
62
(2.441)
Mat: 2024-T3 Aluminum 5 (.197) Thk (3) Req’d.
Bending
Line
Bend along centerline to match pivot head
(4 degrees)
40
(1.575)
52
(2.047)
C
L
8
(.315)
47
(1.850)
6 (.236)
110
(4.331)
28,2
(1.110)
42
(1.653)
4,75
(.187)
4,75 (.187)
80
(2.559)
A
B
B
350 (13.780)
A
80
(2.559)
215
(8.464)
19
(.747)
54
(2.126)
62
(2.441)
134
(5.276)
29
(1.142)
7,9 (.3125)
32
(1.260)
6,35 (.250)
22
(.866)
Reinforcement Strap
Mat: 2024-T3 Aluminum
5 (.197) Thk (4) Req’d.
12
(.472)
R 2,5
(.0984)
FURIA HELICOPTER MAIN ROTOR COMPONENTS
Plans Delivery.com
COPYRIGHT©2001 Osvaldo Durana
24

25. Axle Housing
Axle B fits here
FULL SIZE
Mat: 2024-T3 Aluminum
(2) Req’d.
7(.276)
23
(.906)
46
(1.812)
32
(1.259)
6,35
(.250)
22
(.866)
32
(1.260)
4 (.158)
R 23 (.906)
Axle A is
Press Fit
here
4 (.158)
28
(1.103)
46
(1.812)
7,93 (.3125)
Axle Grip
FULL SIZE
29
(1.142)
Mat: 2024-T3 Aluminum
(2) Req’d.
54
(2.126)
54
(2.126)
Axle A
Axle B
15.000 (.59056)
14.992 (.59024)
40
(1.575)
51
(2.00)
Axles
FULL SIZE
(2) of each req’d.
Mat: 8620 Steel
Heat Treatment: Case hardening
Minimun surface hardness:
58 Rockwell C
Efective case depth: 0,3 (.012)
(after finish grinding)
FURIA HELICOPTER MAIN ROTOR COMPONENTS
Plans Delivery.com
COPYRIGHT©2001 Osvaldo Durana
25

26. 219
(8.622)
BLADE CONTROL
MASTER HORN
6(.236)
2 (.0787)
Mat: 1045 Steel
(1) req’d
9
(.354)
FULL SIZE
1/4”-28 UNF
17
(.669)
45
Deg.
82
(3.228)
BUSHING
2 (.0787)
AFTER BENDING
Mat: Steel (1) Req’d.
14.000
(.55118)
14.020
(.55197)
23
(.906)
13,950
(.5492)
FULL SIZE
26 Degree
10 (.394)
32
(1.260)
28.980
1.14094
2 (.0787)
4,75 (.187) Hole
15
(.591)
A
8-32 UNF
8
(.315)
A
FRONT
VIEW
21
(.827)
H
BOTTOM VIEW
20.976
20.989
Dia (.82583)
(.82634)
10
28
(3.94) (1.103)
6 (.236)
10
(.394)
CLAW
FULL SIZE
Mat: 4140 Steel
(4) Req’d.
H Bearing housing
16
18
3
(.630) (.119) (.709)
37
(1.458)
28
(1.103)
Shell type bearings are installed here with the aid of a press
FURIA HELICOPTER MAIN ROTOR COMPONENTS
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COPYRIGHT©2001 Osvaldo Durana
26

27. 35
(1.378)
BLADE CONTROL HORN
Mat: 2024-T3 Aluminum (2) req’d
FULL SIZE
2 (.0787)
44
(1.733)
6,35 (.250)
14.000 (.55118)
13.980 (.55039)
10
(.394)
4,75 (.187)
13 (.512)
1/4”-28 UNF
16
(.630)
8 (.315)
30
(1.182)
15
(.591)
6,35
(.250)
R 11
(.433)
64
(2.523)
4,5
(.177)
5
(.197)
122
(4.805)
31
(1.220)
48
(1.890)
30.000
(1.181)
9
(.355)
31 (1.220)
37
(1.457)
16
(.630)
56
(2.205)
12 (.472)
32.000
(1.260)
43
(1.693)
PIN
CONTROL SLIDING AXLE
Mat: 41410 Steel (1) req’d.
Mat Steel (1) req’d.
32
(1.260)
112
(4.410)
6 (.236)
6 (.236)
Lenght and chamfer according
sliding axle
FULL SIZE
FURIA HELICOPTER -
MAIN ROTOR /CONTROL SYSTEM
Plans Delivery.com
COPYRIGHT©2001 Osvaldo Durana
27

28. 5 (.197)
PUSH-PULL AXLE
FULL SIZE
Mat: 4140 Steel (1) req’d.
2,5 (.098)
FULL SIZE
6 (.236)
10
(.394)
13.990 (.55079)
14.000 (.55119)
5/16”-24 UNF
12 (.472)
7 (.275)
162
(6.378)
18
(.709)
108
(4.252)
22
(.866)
205
(8.071)
Mat: 2024-T3 Aluminum
12 (.472) Thk.
(2) req’d
FULL SIZE
21,8 (.858)
36
(1.417)
R 2 (.0787)
25,4
(1.00)
5 (.197)
30
(1.181)
6
(.236)
12,5
(.492)
30
(1.181)
54
(2.126)
42
(1.653)
20.976
(.82583)
20989
(.82634)
15.000
(.59056)
14.992
(.59024)
15.020 (.5914)
BUSHING B
6 (.236)
2 Deg.
Mat: Steel (2) req’d
49
(1.929)
FULL SIZE
34
(1.338)
BUSHING A
19
(.748)
PIVOT HEAD
Mat: steel (2) req’d.
FULL SIZE
24 (.945)
6-32 UNF
2 deg.
100
(3.937)
13
(.512)
MAIN ROTOR AXLE
Mat: 8620 steel (1) Req’d
HEAT TREATMENT:
Case Hardening
Min. Surface Hardness:
58 Rockwell C
Efective case depth:
0,3 (.012)
After finish grinding
15.250 (.600)
FURIA HELICOPTER CONTROL SYSTEM
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COPYRIGHT©2001 Osvaldo Durana
28

29. BALL
Mat: 8620 Steel (1) req’d.
Heat Treatment: Case Hardening
58 Rockwell C
25 Deg.
60.000
(2.362)
15,020
(.5914)
29,980 (1.1803)
29,990 (1.1772)
65.000
(2.55906)
64.987
(2.55855)
72.000
(2.835)
65.000
(2.55906)
64.987
(2.55855)
57
(2.244)
55
(2.165)
60.000
(2.362)
55
(2.165)
FULL SIZE
2(.0787)
20
(.787)
18
(.709)
15
(.591)
18
(.709)
13
(.512)
A
Woodruff keyseats
28
(1.102)
92
(3.622)
11
(.433)
215
(8.465)
4 (.157)
4 (.157)
7
(.275)
120
Deg.
51
(2.007)
SECTION
A-A
54
(2.126)
30
deg.
R 2 (.0787)
A
MAIN ROTOR SHAFT
42
(1.654)
Mat: 4140 Steel (1) req’d.
R2 (.0787)
R 2 (.0787)
FULL SIZE
51
(2.007)
22.000
(.8666)
FURIA HELICOPTER MAIN ROTOR COMPONENTS
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COPYRIGHT©2001 Osvaldo Durana
29

30. 69,4
(2.733)
A
20
(.787)
GEARBOX HOUSING
Lower Half
5 (.197)
Mat: Aluminum casting
R3 (.118)
46
(1.811)
118
(4.646)
25,4
(1.00)
89
(3.504)
4 (.157)
102
(4.016)
To suit
mast
15 (.590)
25,4
(1.00)
6,5 Dia Holes
(.256) 6 holes eq. sp.
78
(3.071)
288 Dia
(11.339)
12
10
(.394)
300 Dia
(11.811)
151
(5.945)
7 (.276)
100 Dia
(3.937)
9 (.354)
35
(1.378)
SECTION A-A
72
(2.835)
FURIA HELICOPTER -
9 (.354)
8
(.315)
89 Dia (3.504)
A
MAIN GEARBOX HOUSING
R 51
(2.008) Plans Delivery.com COPYRIGHT©2001 Osvaldo Durana
30

31. 15
(.590)
20 (.787)
46
(1.811)
A
GEARBOX HOUSING
Upper half
5 (.197)
2 Deg.
R 3 (.118)
Mat: Aluminum casting
10(.394)
122
(4.803)
6 (.236)
89
(3.504)
114
(4.488)
4(.157)
78
(3.071)
GEARBOX LID
100.000
(3.93701)
100.035
(3.93839)
Mat: Aluminun 4 (.157) Thk.
(1) Req’d.
288 Dia
(11.339)
100
(3.937)
300 Dia
(11.811)
151
(5.945)
7(.276)
45 Deg.
100 Dia
(3.937)
16 (.629”)
89
(3.504)
35
(1.378)
5 Dia
(.197)
8 holes Eq. Sp.
45º
72 Dia
(2.835)
9(.354)
2 Deg.
89 Dia (3.504)
8(.315)
A
R 51
(2.008)
FURIA HELICOPTER MAIN GEARBOX HOUSING
Plans Delivery.com
COPYRIGHT©2001 Osvaldo Durana
31

32. GEAR
PINION
Full Size
15
(.590)
Dia 25
(.984”)
3(.1
18”)
3
(.118”)
45
(1.77)
246
(9.7)
15
(.590”)
*
100 220
(3.94) (8.66)
25
(.984”)
160
(6.30)
37
(1.456”)
R9
(.354)
5
(.197)
*) To fit in main rotor shaft
CUTTING DATA
NUMBER OF TEETH
DIAMETRAL PITCH
PITCH DIAMETER
OUTSIDE DIAMETER
CENTERDISTANCE
ADDENDUM
DEDENDUM
CLEARANCE
WHOLE DEPTH
GEAR
95
10
9.5
9.7
5.9
.1
.1157
.0157
.2157
PINION
23
10
2.3
2.5
5.9
.1
.1157
.0157
.2157
FURIA HELICOPTER MAIN ROTOR GEARS
Plans Delivery.com
COPYRIGHT©2001 Osvaldo Durana
32

33. 83
(3.268)
14
(.551)
2,4
(.094)
15
(.591)
36
(1.417)
100 Dia
(3.937)
16
(.630)
3 (.118)
A
SECTION A-A
65
(2.560)
71.975
52.000
(2.83366)
(2.04724)
52.025
(2.04823)
45
(1.772)
52.000
(2.04724)
52.025
(2.04823)
55
(2.165)
89
(3.504)
R 4 (.157)
Chamfer
45 Deg.
7
(.276)
PINION HOUSING
Mat: Aluminum (1) req’d.
5 Dia (.197) 8 holes
eq. sp.
FULL SIZE
A
FURIA HELICOPTER -
MAIN ROTOR GEARBOX / PINION HOUSING
Plans Delivery.com
COPYRIGHT©2001 Osvaldo Durana
33

34. 101,6
(4.00)
To match mast tube I.D.
Holes for gearbox attachment ring
3(.118)
D
FW
1/4”-28
UNF
25,4
(1.00)
10
(.394)
56
(2.205)
89
(3.504)
75
(2.953)
22
(.866)
GEARBOX
ATTACHMENT RING
97
(3.819)
To suit mast tube I.D.
Mat: 4130 Steel
50
(1.968)
6 Holes eq. sp.
1310
(51.575)
38
(1.496)
A
A
FULL SIZE
MAIN ROTOR MAST
Mat.: 6061-T6 Aluminum Tube
O.D. 400 (101.6)
I.D. 97 (3.819) (Approx.)
Holes for belcranck mounting ring
60 Deg.
FURIA HELICOPTER MAIN ROTOR MAST
Plans Delivery.com
COPYRIGHT©2001 Osvaldo Durana
34

35. RACE/NUT
Mat: 1050 Steel (1) req’d
39.00
(1.535)
CENTRAL UNIBALL
HOUSING
FULL SIZE
7(.276)
B
33.00
(1.299)
Mat. 1045 Steel (1) req’d
5
(.197)
10
(.394)
1-3/8”-12
UNF
3 (.118)
FULL SIZE
28
32,5
(1.102) (1.280)
1-3/8”-12 UNF
25
(.984)
*15(.591)
12 (.472)
B
11
(.433)
Mat: 1050 Steel (1) req’d
Spherical
Radius 15
(.591)
5 (.197)
Mat: 1050 Steel (1) req’d
FULL SIZE
32,90
(1.2953)
10
(.394)
A
5
(.039)
SECTION A-A
3 (.118)
15,5
(.610)
SECTION A-A
Spherical
Radius
15 (.591)
A
FULL SIZE
C
8
(.315)
4,75
(.187)
HEAT TREATMENT
Ball and races must have hardened
surfaces (raceways)
Minimun surface hardness:
58 Rockwell C
23
(.906)
16
(.634)
To fit in central Push-Pull tube
(collective)
7/8”-14
UNF
22.000
(.86614)
22.021
(.86697)
18
(.709)
BALL RACE
26,50
(1.043)
BALL/BEARING HOUSING
*Spherical Radius
SECTION B-B
2,5
(.098)
NUT A
9
(.354)
3 (.118)
C
17
(.669)
3 (.118)
(.157) 4
60
(2.362)
Mat.: 1045 Steel (1) req’d
D
7/8”-14
UNF
20,5
(.807)
SECTION D-D
FULL SIZE
D
FURIA HELICOPTER CONTROL SYSTEM
Plans Delivery.com
COPYRIGHT©2001 Osvaldo Durana
35

36. Mat: 2024-T3 Aluminum (1) Req’d
R 2,5(.098)
FULL SIZE
CYCLIC/COLLECTIVE Central Link
Mat: 2024-T3 Aluminum (2) req’d
25
(.984)
22 (.866)
21 (.827)
40
(1.575)
R8
(.315)
6
(.236)
17
(.669)
R6
(.236)
60
(.827)
16
(.634)
To suit
Push-Pull
tube
(collective)
6(.236)
6,35 Dia
(.250)
3 holes
40
(1.575)
R 13
(.512)
52
(2.047)
6 (.236)
R 2,5 (.098)
CYCLIC UPPER BELLCRANK
R 6 (.236)
10 (.394)
R 16
(.630)
20
(.787)
6,35
(.250)
53
(2.087)
22
(.866)
19 (.748)
12
(.472)
FULL SIZE
R 9,5
(.374)
NUT B
BUSHING -SPACER
Mat: 1045 Steel(1) req’d
Mat: 2024-T3 Aluminum (4) Req’d
12
(.472)
6,35 (.250)
FULL SIZE
14
(.551)
E
3 (.118)
10
(.394)
16
(.630)
10-32 UNF
SECTION E-E
5/16”-24
UNF
FULL SIZE
E
FURIA HELICOPTER CONTROL SYSTEM
Plans Delivery.com
COPYRIGHT©2001 Osvaldo Durana
36

37. BLADE CONTROL LINKAGE
97
(3.82)
FULL SIZE
Rod End
HMVV-4
Nut
AN316-4R
CENTRAL PUSH-PULL TUBE
PUSH-PULL TUBES THREADED ENDS
Mat: 2024-T3 Aluminum (2) req’d
Mat: 2024-T3 or
6061-T6 aluminum
(7) req’d
make 4 right threaded
and 3 left threaded
48
(1.89)
Nut
AN316-4L
FULL SIZE
Rod End
HMLVV-4
51
(2.00)
2 (.08)
16,32 (.6426)
Dia to fit in
Aluminum tubes
25
(.984)
1/4”-28
UNF
10 (.394)
12,7
(1/2”)
Mat: 4130 steel tube (1)req’d
Lenght to suit
approx. 1300 (51.18)
5
(.197)
2 (.08)
22
(.866)
10
8
(.394) (.315)
22,2
(3/4”)
23
(.905)
DRAG BRACE BUSHING
19
(3/4”)
Mat: 2024-T3 aluminum (2) req’d
8 (.315)
AN316-4R
8
(.315)
BLADE DRAG BRACE
Rod End HMVV-4
15 (.590)
157
(6.18)
63
(2.48)
19 Dia
(.748)
44 (1.732)
FRONT VIEW
5(.197)
7,9
(.312)
13
(.512)
12
(.472)
5 (.197)
Mat: Steel Quantity: 2 of each
44
(1.732)
FULL SIZE
SIDE VIEW
50
(1.97)
FULL SIZE
FURIA HELICOPTER CONTROL SYSTEM
Plans Delivery.com
COPYRIGHT©2001 Osvaldo Durana
37

38. CYCLIC CONTROL
LOWER BELLCRANK
30
(1.18)
10
(.394)
Mat: 2024-T3 aluminum
5 (.197) Thk.
(1) req’d
FULL SIZE
FWD
16 (.629)
6,35
(.250)
6 holes
R 41
(1.614)
16 (.629)
1/4”-28
UNF
FULL SIZE
SPACER
BUSHING
Mat: steel or brass (1)req’d
24
(.945)
4 (.157)
6,35 (.250)
64
(2.52)
40
(1.58)
3 (.118)
Mat: 2024-T3 Aluminum 5 (.197) Thk (1) req’d
4 (.157)
6,35 Dia
(.250)
FULL SIZE
97
(3.82)
COLLECTIVE CONTROL
LOWER BELLCRANK
R 12,5
(.49)
7/16”-20
UNF
64 Dia
(2.52)
60º
6 holes
eq. sp.
67
(2.638)
18 (.709)
5/16”-24 UNF
35
(1.378)
R9
(.354)
73
(2.874)
59
(2.32)
Mat: aluminum (1) req’d
18
(.709)
R9
(.354)
BELLCRANKS
MOUNTING
RING
R 12,5
(.492)
25
(.98)
102
(4.00)
To match mast tube O.D
12,7
(1/2”)
FURIA HELICOPTER FULL SIZE
CONTROL SYSTEM
Plans Delivery.com
COPYRIGHT©2001 Osvaldo Durana
38

39. Rod ends
HMVV-4
Rod end
HMLVV-4
B
Nut
AN316-4R
Nut
AN316-4R
Nut
AN316-4L
1070 (42.126)
1170 (46.063)
A
34
(1.34)
CYCLIC CONTROL
PUSH-PULL TUBES
8 (.315)
Mat: 6061-T6 aluminum tubes
19 Dia (3/4”) 1,5 (.058) wall thk
(1) of each req’d
Threaded ends :(see page # 36)
1040
(40.945)
1140
(44.882)
15
(.590)
FULL SIZE
88
(.3.46)
CENTRAL BRACKET
15
(.590)
Mat: 4130 steel 2 (0.80) thk
(1) req’d
FULL SIZE
5 Dia (.197)
R 6,35 (.250)
15
(.590)
Nut
AN316-4L
R9
(.35)
154
(6.06)
Rod end
HMLVV-4
6,35
(.250)
20 (.787)
FURIA HELICOPTER CONTROL SYSTEM
Plans Delivery.com
COPYRIGHT©2001 Osvaldo Durana
39

40. 232
(9.13)
MAIN GEARBOX
FRONT BRACKET
Mat: 4130 Steel
2 (.080) thk.
(2) req’d
96
(3.78)
90)
15 (.5
50
(1.97)
15
(.590)
7)
5 (.18
8 (.315)
FULL SIZE
68
(2.68)
140
(5.51)
R 1,5
(.05)
36
(1.42)
19
(.748)
30
(1.181)
9
(.354)
48
(1.89)
65
(.2.56)
5 (.197)
8
(.311)
21
(.827)
8
(.315)
6,35
(.250)
R 10
(.394)
BELLCRANK BRACKET
36
(1.42)
6,35 (.250)
34
(1.338)
To match
main gearbox
Mat: 2024-T3 Aluminum
11 (.433) Thk
(2) req’d
FULL SIZE
R 228
(8.97)
FURIA HELICOPTER MAIN GEARBOX BRACKET
Plans Delivery.com
COPYRIGHT©2001 Osvaldo Durana
40

41. 12,7 (.5)
FULL SIZE
5 (.197)
A
32
(1-1/4”)
15
(.590)
63
(2.48)
TORQUE TUBE
610
(24.02)
Mat: 6061-T6 Aluminum 1,6 (.065) wall thk. (1) req’d.
12,7 (.5)
5 (.197)
28,3 (1.118)
To fit inside
Torque Tube
7/16”-20
UNF
FULL SIZE
9
(.354)
8
(.315)
20 (.787)
10-32
UNF
63
(2.48)
15
(.590)
10-32
UNF
NYLON BUSHING
101,6
(4.00)
INNER REINFORCEMENT TUBE
Mat: 4130 Steel 2,10 (.083) wall thk (1) req’d
14
(.551)
3 (.118)
6 (.236)
SPACER
R
Press to install
(1) req’d
R 18
(.708)
6,35 (.250) 5 holes Eq. Sp.
98
(3.86)
FULL SIZE
7 (.276)
Mat: Aluminum (1) req’d
8
(.315)
FULL SIZE
16
(.630)
6,35(.250)
16
(.630)
20
(.787)
44
(1.73)
32,3
(1.27)
37.9
(1.492)
5
(.197)
38,2
(1.51)
37,5
(1.46)
R
20 (.787)
10
(.394)
28,3
(1.118)
To fit inside torque tube end (A)
FULL SIZE
LEVER
Mat: 2024-T3 or 6063-T6 aluminum
(1) req’d
FURIA HELICOPTER CONTROL SYSTEM
Plans Delivery.com COPYRIGHT©2001 Osvaldo Durana
41

42. 232
(9.13)
80
(3.15)
70
(2.75)
18
(1.69)
15
(.197)
10
(.393)
205
(8.07)
94
(3.70)
190
(7.48)
40
(1.57)
43
24
(.944) (1.69)
5 (.187)
MAIN GEARBOX REAR
BRACKET
Mat: 4130 Steel 2 (0.80) Thk
(1) req’d
5 (.197)
FURIA HELICOPTER MAIN GEARBOX BRACKET
R 7 (.27)
Plans Delivery.com
COPYRIGHT©2001 Osvaldo Durana
42

43. LATERAL STOP
I.D. to fit
control stick
4,75
(.187)
Thru
Mat: 4130 Steel
2 (.08) Thk
6
(.236)
8
(.315)
25,4
(1.00)
14
(.551)
FULL SIZE
40º
48
(1.89)
5(.187)
50
(1.97)
Mat: 2024-T3 aluminum 5 (.197)
(1) req’d
50
(1.97)
36
(1.42)
R
A
B
110º
37
(1.46)
38
(1.50)
54
(2.126)
70
(2.76)
16
(.630)
17 (.669)
63
(2.480)
CYCLIC CONTROL STICK HOLDER
Mat: 4130 Steel (1) req’d
28,6 (1-1/8”)
2,4 (.095)
Wall Thk
2 (.08)
Thk
6,35
(.250)
R 8,5
(.335)
8
(.315)
5
(.197)
3,25
(.128)
12
(.472)
36
(1.42)
TORQUE TUBE
BRACKET
84
(3.307)
21
(.827)
R 25
(.984)
FULL SIZE
FURIA HELICOPTER CONTROL SYSTEM
Plans Delivery.com
COPYRIGHT©2001 Osvaldo Durana
43

44. CYCLIC CONTROL PUSH-PULL TUBE
Rod End
HMLVV-4
Rivets
FULL SIZE
6061-T6 Aluminum Tube 22,2 (3/4”) 1,50 (.058) Wall Thk. (1) req’d
Nut AN316-4L
Rod End
HMVV-4
Nut AN316-4R
471 (18.54)
573 (22.56)
TRAVEL LIMITING STOP
36
(1.42)
LIMITING BAR
Mat: 4130 Steel (.095) Wall Thk (1) Req’d
Mat: Steel (1) req’d
Cotter Pin holes
14
(.551)
5 (.197)
8
(.315)
45
(1.77)
3,175 (1/8”)
3 (.118)
5-44
UNF
130
(5.12)
10
(.394)
130º
STICK HOLDER CAPS
50
(1.970)
A
49
(1.929)
FULL SIZE
3,5
(.138)
R7
(.275)
14
(.551)
Dia to suit
stick holder
9
(.354)
28,6
(1-1/8”)
6,35
(.250)
Thru
Stiffener
FULL SIZE
Mat:Aluminum (1) of each req’d
I.D. To slide
Torque Tube
In
2 (.08)
FULL SIZE
12,7 (1/2”)
23
(.905)
12,7 (1/2”)
8
(.315)
3 (.118)
1,45 (.05)
Chamfer
B
FURIA HELICOPTER CONTROL SYSTEM
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COPYRIGHT©2001 Osvaldo Durana
44

45. R 9,5
(.375)
98
(3.86)
24
(.945)
6,35
(.250)
3 (.118) Hole thru
THROTTLE LEVER
Mat: 4130 Steel (1) Req’d
22
(.866)
40º
28 (1.10)
5 (.197) Thru
9,75 (.384)
30
(1.18)
62
(2.44)
15
(.590)
12,7 (.5)
FULL SIZE
10
(.393)
40
(1.57)
72
(2.83)
87
(3.42)
2 (.080)
134
(5.28)
16
(.630)
FULL SIZE
34
(1.34)
40º
6,35 Dia
(.250)
7
(.275)
3 (.118)
9,5 (.38)
16
(.63)
BENDING LINE
97
(3.82)
178
(7.00)
5
(.197)
R9
(.35)
40
(1.57)
76
(2.99)
Weld
CYCLIC CONTROL STICK
Mat: 4130 Steel - 2 (.080) Thk
(2) req’d (left and right)
UPPER CYCLIC BELLCRANKS
MOUNTING BRACKET
Mat: 4130 Steel (1) Req’d
22,2 (7/8”) O.D. 1,65 (.065) Wall Thk (1) Req’d
FURIA HELICOPTER CONTROL SYSTEM
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COPYRIGHT©2001 Osvaldo Durana
45

46. COLLECTIVE CONTROL STICK
Mat: 4130 Steel tubing (1) req’d
500
(19.68)
15
(.590)
FULL SIZE
22.2 (7/8”) O.D.
(.035) Wall Thk
12 (.472)
NYLON BUSHINGS
R 15 (.590)
Mat: 4130 2(.080) Thk
280
(11.0)
5 (.197)
COLLECTIVE LEVER
95º
DETAIL A
45
(1.77)
95º
20,2
(.795)
THREADED END
10 (.394) Thk
5 (.197)
20,2
(.795)
10 (.394)
32 (1.26)
29,8
(1.173)
22,4 (.882)
10
(.394)
6,35 (.250)
10
(.394)
15
(.590)
22,4
(.882)
4 (.157)
29,8
(1.173)
152
(5.98)
Weld
R 9,5
(.375)
3 (.118)
hole thru
(1) of each req’d
24 (.945)
9,75 (.380)
1/4”-28 UNF
5 (.197)
31,7 (1-1/4”) O.D.
(.035) Wall Thk
6,35 (.250)
4130 Steel Tube9,5 (.375)
0,8 (.035) Thk
FULL SIZE
A
568
(22.36)
FURIA HELICOPTER HANDLE THROTTLE CONTROL
CONTROL SYSTEM
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COPYRIGHT©2001 Osvaldo Durana
46

47. MAIN ROTOR BLATE TOP VIEW
A
2680
(105.512)
B
110
(4.331)
LEADING EDGE
25 (.984)
16 (.630)
15 (.590)
Soft Rivets
Tip Cover
26 (1.024)
TRAILING EDGE
A
SEE SECTIONS A-A and B-B on
page # 47
B
20
(.787)
Note:
All tubes must have a inner aluminum bar at
the root - Lenght: 150 (5.905)
FURIA HELICOPTER MAIN ROTOR BLADE
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COPYRIGHT©2001 Osvaldo Durana
47

48. MAIN ROTOR BLADE CROSS SECTIONS
Dia 7,5
(.295)
SECTION A-A
Blade root reinforcement plates
FULL SIZE
Blade seat
Reinforcements
(upper and inner)
Steel bushing
6º
153
(6.024)
Lower Steel plate
FULL SIZE
SECTION B-B
6061-T6 Aluminum tubes
4130 Steel tube
27º
2024-T3 Aluminum bars
FULL SIZE
11
(.433)
MAIN BLADE SKIN SECTION
Mat: 2024-T3 Aluminum 0,5 (.020) Thk
Lenght: 2680 (105.51) (2) Req’d
Bend the aluminum sheet to comform this shape
FURIA HELICOPTER 8º
MAIN ROTOR BLADE
Plans Delivery.com
COPYRIGHT©2001 Osvaldo Durana
48

49. BLADE ROOT REINFORCEMENT PLATE
STEEL BUSHING
12
(472)
5
(.197)
11
(.433)
16
(.630)
Mat: 2024-T3 Aluminum 5 (.197) Thk (8) req’d
5(.197)
4
(.157)
12
(.472)
20
(.787)
35
(1.378)
50
(1.968)
70
(2.756)
25,4
(1.00)
35
(1.378)
23
(.905)
FULL SIZE
25,4
(1.00)
12
(.472)
145
(5.709)
INNER REINFORCEMENT
Mat: 4130 Steel 1,27 (.050) Thk (2) Req’d
4 (.157)
2
(.0787)
20
(.787)
13
(.512)
13
(.512)
660
(25.984)
INNER REINFORCEMENT
Mat: 2024-T3 Aluminum 1,27 (.050) Thk (2) Req’d
FULL SIZE
20
(.787)
13
(.512)
640
(25.197)
FULL SIZE
FURIA HELICOPTER MAIN ROTOR BLADE
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COPYRIGHT©2001 Osvaldo Durana
49

50. LOWER BLADE PLATE
Mat: 4130 Steel 2 (.080) Thk (2) Req’d
12
(.472)
4
(.157)
16
(.630)
UPPER
REINFORCEMENT
16
(.630)
Mat: 4130 Steel 2 (.080) Thk
(2) Req’d
22
(.866)
13
(.512)
5 (.197)
20
(.787)
35
(1.378)
50
(1.968)
150
(5.905)
FULL SIZE
150
(5.905)
81
(3.189)
8
(.3125)
FULL SIZE
18
(.709)
8(.3125)
27
(1.063)
6 (.236)
8
(.3125)
150
(5.905)
FURIA HELICOPTER MAIN ROTOR BLADE
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COPYRIGHT©2001 Osvaldo Durana
50

51. 6º
Twist
BLADE ROOT
Counterweight
BLADE TIP DETAIL
OS
VA
LD
OD
UR
AN
A
Outer Skin
OS
VA
LD
OD
UR
AN
A
Tip Cover
Screws
Inner reinforcement (steel)
(between outer skins)
BLADE ROOT DETAIL
Root
Reinforcement
Plates
Leading Edge
Steel Rivets
A
AN
UR
OD
LD
VA
OS
Inner reinforcement (aluminum)
(Between outer skins)
BLADE TIP
Inner Aluminum Bar
Upper Reinforcement
Inner Reinforcement
(Steel)
Lower Blade Plate
Steel Tube
Aluminum Bars
Aluminum Tubes
Skin
Trailing Edge
FURIA HELICOPTER MAIN ROTOR BLADE DETAILS
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COPYRIGHT©2001 Osvaldo Durana
51

52. B
OS
VA
LD
OD
UR
AN
A
MAIN ROTOR BLADE
CONSTRUCTION
C
A) Setting wood jigs, check alignment and determine jigs #1 and #2.
You can add wood stringers between the jigs to make the assembly stronger.
B) Mount the tubes and bars over the jig so you can rivet them together, Check
that tubes follow the twist. (6º)
C) After cutting the tubes to allow fit counterweight at the tip (see page # 50).
D) Remove the pack of tubes and bars from the jig and place the prebend
aluminum skin (page # 47) over the jig, now you can place the pack of tubes
and bars inside the open skin.
E) Close the skin and start riveting the trailing edge, don’t forget to include the
inner reinforcement strips between the skins.
F) use soft rivets to hold skins and tubes.
G) Finish root and tip sections, placing reinforcement plates and tip cover.
A
0º Wood Jig
Blades must be balanced
6º Wood Jig
FURIA HELICOPTER -
MAIN ROTOR BLADE CONSTRUCTION
Plans Delivery.com
COPYRIGHT©2001 Osvaldo Durana
52

53. FULL SIZE
COUNTERWEIGHT
Mat: lead (2) Req’d
3,7 (.146)
BLADE TIP COVER
55
(2.165)
Cut and glue to 1/4” or 1/2”
Plywood
6-32 UNF
Mat: 2024-T-3 aluminum 5 (.197) Thk (2) req’d
(Shape to suit airfoil)
Shape to suit airfoil
30
(1.181)
FULL SIZE
wood jig
0º
BLADE ROOT
Cut and glue to 1/4” or 1/2”
Plywood
Center holes according aluminum bar centers
wood jig
6º
FULL SIZE
BLADE TIP
FULL SIZE
FURIA HELICOPTER MAIN ROTOR BLADE
Plans Delivery.com
COPYRIGHT©2001 Osvaldo Durana
53

54. PITCH CONTROL LINKAGE
STEEL PIN
Mat: 1/2” hex aluminum bar (2) Req’d
(2) Req’d
60
(2.363)
17
(.670)
20
(.787)
31
(1.220)
23,5
(.925)
Chamfer
6,36 (.250)
8 (.315)
61
(2.40)
24,5
(.965)
1/4”-28
UNF-LH
FULL SIZE
Mat: 4130 Steel (2) Req’d
13,5
(.532)
1-3/8”-12 UNF
9,5 (.374)
12,7 (.500)
6,35
(.250)
61
(2.402)
Dia 4 (.157)
FULL SIZE
BLADE GRIP NUT
98,5
(3.878)
FULL SIZE
4 (.157)
7 (.276
11 (.433)
8,5 (.335)
26
(1.024)
Rods are installed with the aid of a
press
BE CAREFULL: do not bend rods
Mat: Steel
32.000
32.025
(1.25985)
(1.26083)
2
(.0787)
R 2 (.0787)
PITCH CONTROL HEAD
R2
(.0787)
1/4”-28 UNF
2
(.0787)
15,5
(.611)
Mat: 2024-T3 Aluminum
(1) Req’d
10 (.394)
112,5
(4.430)
20,6
(.811)
9
(.354)
FULL SIZE
FURIA HELICOPTER TAIL ROTOR
Plans Delivery.com
COPYRIGHT©2001 Osvaldo Durana
54

55. TAIL BLADE GRIP
Mat: 6061-T6 or 2024-T3 Aluminum (2) Req’d
73
(2.874)
27
(1.063)
33
(1.299)
83
(3.268)
6
(.236)
7,5
(.295)
4,75 (.187) 6 Holes Eq. Sp.
43
(1.693)
57
(2.244)
68
(2.677)
6,35 (.250)
31
(1.220)
15 (.590) Spotface
to clean
A
A
35
(1.378)
56
(2.205)
9
(.354)
6(.236)
56
(2.205)
R 2 (.0787)
6,35
(.250)
9,5
(.374)
4,75 (.187) 6
Holes Eq. Sp.
48
(1.889)
41
(1.614)
68 Dia (2.687)
PITCH CONTROL HORN
FULL SIZE
28
(1.102)
16
(.630)
25 (.984)
Mat: 2024-T3 Aluminum 4 (.157) Thk (2) Req’d
R 2,5
(.098)
* 30.000
30.021
(1.18111)
(1.18193)
13
(.512)
1-3/8”-12
UNF
6,5
(.256)
5/8”-18 UNF
AXLE NUT
23
(.905)
2
(.0787)
FULL SIZE
22,5
(.886)
6
(.236)
33
(1.300)
25,4
(1.00)
22
(.866)
Mat: Steel (2) Req’d
FURIA HELICOPTER FULL SIZE
TAIL ROTOR
Plans Delivery.com
COPYRIGHT©2001 Osvaldo Durana
55

56. TAIL ROTOR HUB
30.000
29.975
(1.18111)
(1.18012)
RETAINER NUT
16,5
(.629)
R
11
(.433)
21
(.827)
6
(.236)
5
(.197)
Mat: Steel (1) Req’d
A
FULL SIZE
4º
A
A
Keyway 3,5 x 2 (.138 x .0787)
21
(.827)
FULL SIZE
28,5
(1.122)
27
(1.063)
16º
5 (.197)
25
(.984)
4 (.157)
14,5
(.571)
15,5
(.610)
R 2 (.0787)
19
(.748)
4,5
(.177)
A
4(.157)
15
(.590)
SECTION A-A
ENLARGED
TAIL ROTOR HUB
(1) Req’d
Mat: 2024-T3 Aluminum with Bronze
inserts (tapered bushings)
Use anaerobic adhesive to fix bushings in place (Loctite® )
11
(.433)
4
(.157)
2 (.0787)
3 (.118)
R 1.75
(.0689)
16º
AXLE PIVOT SCREWS AND NUTS
Mat: Steel (2) Req’d
(ENLARGED)
FASTEN SCREWS WITH ADHESIVE (Loctite)
9
(.354)
2(.0787)
5/16”-24
UNF
6,5 (.256)
35
(1.378)
40º
5 (.197)
2,5 (.098)
Chamfer
5,5
(.217)
2 (.0787) Hole for safety wire
9/16”-18 UNF
SECTION A-A ENLARGED
6
(.236)
19 (.709)
5
(.197)
FURIA HELICOPTER TAIL ROTOR
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COPYRIGHT©2001 Osvaldo Durana
56

57. PITCH-CONTROL AXLE
11
11
(.433) (.433)
Mat: Steel (1) Req’d
317 (12.480)
70
(2.756)
8
(.315)
FULL SIZE
35
(1.378)
7 (.275)
23
(.905)
10
(.394)
8 (.315)
1/4”-28
UNF
8,5 (.335)
13 (.512)
6 (.236)
6 (.236)
6 (.236)
10 (.394)
43
(1.693)
A
18
(.709)
16,5
(.649)
61
(2.402)
41,5
(1.634)
A
18
(.709)
16.000
15.992
(.62992)
(.62961)
19,5
(.768)
2
(.0787)
45º
Hole for pin
SECTION A-A
45º
12 (.472)
8,5
(.334)
4,25
(.167)
30.000
30.021
(1.8111)
(1.8193)
Holes for Pivot screws
5/16”-24 UNF
6,35 (.250)
Mat: Steel 2 (.0787) Thk (1) Req’d
38,5
(1.516)
6 (.236)
10 (.394)
13 (.512)
8,5 (.335)
43
(1.693)
1/4”-28
UNF
CONTROL HEAD GUIDE
124,5
(4.902)
10.000
9.994
(.39370)
(.39347)
11
11
(.433) (.433)
AXLE
4º
Mat: 4140 Steel (1) Req’d
Once installed properly over the hub, make
the 2 mm (.0787) hole on Tail Rotor Hub and
place a Pin ( See tail Rotor Exploded view
Page # 11
FULL SIZE
FULL SIZE
5/8”-18 UNF on both ends
FURIA HELICOPTER TAIL ROTOR
Plans Delivery.com
COPYRIGHT©2001 Osvaldo Durana
57

58. TAIL ROTOR GEARBOX REAR CAP
Mat: Aluminum (2) Req’d
6,35 (.250)
4 Holes Eq. Sp.
6 (.236)
A
50 (1.968)
To suit
Tail Boom I.D.
97 (3.819)
10-32 UNF
8 Holes Eq. Sp.
20 (.787)
55
(2.165)
28,5
(1.123)
8 (.315)
64
(2.520)
42.000
42.025
(1.6535)
(1.6545)
13
(.512)
8 (.315)
50
(1.968)
42.000
42.025
(1.6535)
(1.6545)
54,85
(2.160)
SECTION A-A
A
14
(.551)
6
(.236)
5 (.197)
59
(2.323)
101,6
(4.00) To match Tail Boom O.D.
FULL SIZE
2 (.0787)
6 (.236)
FURIA HELICOPTER TAIL ROTOR GEARBOX CAP
Plans Delivery.com
COPYRIGHT©2001 Osvaldo Durana
58

59. R 11
(.433)
18,5
(.728)
17
(.669)
FULL SIZE
14,5 (.571)
9/16”-18
UNF - Left Hand
25.000
24.991
(.98425)
(.98389)
22 (.866)
21
(.827)
15,8
(.625)
42
(1.653)
16,4
(.646)
9/16”-18
UNF
keyseat
Cone must
match Tail
Rotor Hub
Diameter *
8
(.315)
97
(3.819)
69
(2.716)
74
(2.913)
84
(3.307)
FULL SIZE
3/4”-16
UNF
GEARS CUTTING DATA
72
(2.835)
NUMBER OF TEETH
DIAMETRAL PITCH
PRESSURE ANGLE
PITCH DIAMETER
ADDENDUM
WHOLE DEEPTH
CIRCULAR THICKNESS
SHAFT ANGLE
DEDENDUM
CLEARANCE
Gear
2 req’d
18
(.709)
11
4
(.433)
(.157)
20
(.787)
11
(.433)
TAIL ROTOR GEARS
20.000
19.991
(.78740)
(.78705)
19
(.748)
Mat: Steel (1) Req’d
6 (.236)
7 (.275)
24 (.945)
16 (.630)
SPLINED END
19
(.748)
NUT C
106
(4.173)
211
(8.307)
*To suit Pitch-Control Axle (must slide freely)
R 4 (.157)
97
(3.819)
19
(.748)
FULL SIZE
PINION
18
12
20º
1.5
.0833
.18433
.1309
90º
.10103
.01773
16 (.630)
9/16”-18 UNF
Left Hand
NUT D
Mat: Steel (2) Req’d
GEAR
34
12
20º
2.833
.0833
.18433
.1309
90º
.10103
.01773
28
(1.102)
R 2 (.0787)
22
(.866)
3/4”-16
UNF
FULL SIZE
3 (.118)
30
(1.181)
14
(.551)
FURIA HELICOPTER TAIL ROTOR GEARS
Plans Delivery.com
COPYRIGHT©2001 Osvaldo Durana
59

60. SECTION A-A
55 (2.165)
50 (1.968)
10
(.394)
10-32 UNF
6 (.236)
4 (.157)
O.D. Axis
40
(1.575)
2 (.0787)
2 (.0787)
40
(1.575)
3 (.118)
See
30
Note A
(1.181)
I.D. Axis
4 (.157)
10
(.394)
Dia 54
(2.125)
See
Note B
4 (.157)
45
(1.772)
7 (.275)
1/4”-28 UNF
4 Holes Eq. Sp.
10-32
UNF
Dia. 66 (2.598)
Recess to suit Bearing Cover
10-32 UNF
6 Holes Eq. Sp.
Recess to suit Bearing Cover
(Small)
Note B
Diameter
47.000
47.025
(1.85040)
(1.85138)
Note A:
Diameter
35.000
35.025
(1.3779)
(1.3789)
95
(3.740)
73
(2.874)
A
64
(2.520)
A
2 (.0787)
FULL SIZE
TAIL ROTOR GEARBOX
Mat: Aluminum (2) Req’d
Dia 90
(3.543)
FURIA HELICOPTER TAIL ROTOR GEARBOX
Plans Delivery.com
COPYRIGHT©2001 Osvaldo Durana
60

61. 51
(2.0)
A
TAIL ROTOR LID
15 (.590)
2 (.0787)
Dia. 66
(2.598)
Mat: Aluminum 6 (.236) Thk (2) Req’d
Chamfer
SECTION A-A
2
64
(2.520)
43
(1.693)
(.0787)
35
(1.378)
40
45
(1.772) (1.575)
57
(2.244)
4 (.157)
FULL SIZE
47.000
47.025
(1.85040)
(1.85138)
7
(.276)
A
75º
FULL SIZE
5
(.197)
6 Holes Eq. Sp.
BEARING COVERS
Mat: Aluminum (2) of each Req’d
40
(1.575)
3 (.118)
2 (.0787)
B
22
(.866)
To Suit
Gear Shaft
FULL SIZE
47
(1.850)
38
30
(1.496) 36 (1.181)
(1.417)
36
(1.417)
4 (.157)
35.000
35.025
(1.37796)
(1.37894)
BEARING EE5
5 (.197)
95
(3.740)
20
(.787)
10-32
UNF
BEARING 16005
90
(3.543)
B
2 (.0787)
9
(.354)
SECTION B-B
GEARS
STEEL BUSHINGS
Mat: Steel (1) of each Req’d
33
(1.30)
To Suit
Pinion Shaft
18
(.709)
FULL SIZE
61
(2.401)
FURIA HELICOPTER TAIL ROTOR GEARBOX
Plans Delivery.com
COPYRIGHT©2001 Osvaldo Durana
61

62. RETAINING WASHER
15º
Mat: Aluminum 0,8 (.032) Thk (3) Req’d
FULL SIZE
A
5
(.197)
INTERNAL BRACKET
Mat: 2024-T3 Aluminum 1 (.040) Thk
(3) Req’d
SECTION
A-A
80
(3.150)
Dia 96,5
(3.799)
Dia 90
(3.543)
55
(2.165)
120º
BE
Dia 124
(4.88)
A
ND
80
(3.150)
70
(2.756)
55
(2.165)
Dia 144
(5.669)
FULL SIZE
5
(.197)
5
(.197)
21
(.827)
BENDING LINES
R 0,5
(.020)
Holes to match Shaft End
See page # 62
6,35
(.250)
Holes to match Shaft End
SHAFT
Mat: 6061-T6 Aluminum O.D. 1-1/2” (.080) Wall Thk (1) Req’d
FULL SIZE
27
(1.063)
40
(1.575)
27
(1.063)
2995
(117.913)
40
(1.575)
FURIA HELICOPTER TAIL BOOM SHAFT
Plans Delivery.com
COPYRIGHT©2001 Osvaldo Durana
62

63. SHAFT END
Holes for
Tail Gearbox
50
(1.968)
30
(1.181)
Chamfer
A
6,35
(.250)
Broached end to
match with
Gear Shaft
38,18
(1.50)
R
A
13
7
(.512) (.276)
3
(.118)
FULL SIZE
SECTION A-A
Ins
pe
ct
ion
To Suit
25,4
(1.00) Tail Shaft
I.D.
ho
les
820
(32.28)
750
(29.53)
Dia 30
(1.181)
Mat: 1045 Steel (2) Req’d
3140
(123.622)
INSPECTION HOLE COVER
Mat: Aluminum (.020) Thk (3) Req’d
3 (.118)
18 (.709)
750
(29.53)
39
(1.535)
36
(1.417)
48
(1.890)
FULL SIZE
Holes for
Tail Gearbox
820
(32.28)
TAIL BOOM TUBE
Mat: 6061-T6 Aluminum 101,6 (4.00) - 2 (.083) Wall Thk
FURIA HELICOPTER TAIL BOOM
Plans Delivery.com
COPYRIGHT©2001 Osvaldo Durana
63

64. BUSHING
CONTROL PULLEY ASSY
Mat: Black Grillon (with Molikote) (3) Req’d
20
(.787)
FULL SIZE
A
4 (.157)
Dia 13
(.512)
R1
(.040)
6
(.236)
Chamfer
68
(2.677)
50
(1.968)
Steel
Control
Cable
4
(.157)
42,5
(1.673)
OS
VA
LD
OD
UR
AN
A
70
(2.756)
A
SECTION A-A
CONTROL PULLEY
Mat: 2024-T3 Aluminum (1) Req’d
25,4 (1.00)
25,4
(1.00)
RACEWAY
FULL SIZE
20
(.787)
42
(1.654)
38,2
(1.504)
3 (.118)
Mat: 8620 Steel (3) Req’d
HEAT TREATMENT
CASE HARDENING
Min Surface Hardness
58 Rockwell C
Efective Case Depth
0,3 (.012)
(After Finish Grinding)
20 (.787)
6,35 (.250)
4,75
(.187)
To suit Tail Boom
Shaft O.D.
13
(.512)
16
(.630)
26
(1.024)
FULL SIZE
FURIA HELICOPTER TAIL BOOM
Plans Delivery.com
COPYRIGHT©2001 Osvaldo Durana
64

65. LEVER
Mat: 2024-T3 Aluminum (1) Req’d
PULLEY ARM
Mat: Steel (1) Req’d
SCISSORS A
Mat: Steel (1) Req’d
2 (.0787) Thk
62
(2.440)
45
(1.772)
4,75
(.187)
TOP VIEW
16
(.630)
7,9
(.3125)
R8
(.315)
4,7
(.187)
20
(.787)
8
(.315)
15
(.590)
3 (.118)
8
(.315)
FULL SIZE
54
(2.126)
13
(.512)
R6
(.236)
16
(.630)
4,5 (.630)
Weld
11
(.433)
22
(.866)
25
(.984)
5
(.197)
FRONT VIEW
8
(.315)
8
(.315)
4,75
(.187)
3,1 (.122)
Hole for Steel
Pin
AXLE
R 10
(.394)
R9
(.354)
17,5
(.689)
25
(.866)
8
(.315)
9
(.354)
75
(2.953)
Mat Steel (1) Req’d
6,35 (.250)
10
(.394)
40
(1.575)
FULL SIZE
33
(1.300)
FULL SIZE
FULL SIZE
FURIA HELICOPTER TAIL ROTOR CONTROL
Plans Delivery.com
COPYRIGHT©2001 Osvaldo Durana
65

66. BEARING HOUSING
Mat: 2024-T3 Aluminum (1) Req’d
7,9
(.3125)
SCISSORS B
A
Mat: 2024-T3 Aluminum (1) Req’d
10
(.394)
0,5
(.0196)
9
(.354)
SIDE VIEW
24
(.945)
FULL SIZE
21
(.827)
3 (.118)
61
(2.401)
15
(.590)
19
(.748)
UPPER
6
(.236)
11 (.433)
SIDE
VIEW
5 (.197)
6,5 (.256)
4,5 (.177)
4,75
(.187)
15
(.590)
R4
(.157)
R 2 (.0787)
6
(.236)
FRONT
VIEW
12,7
(.500)
16
(.630)
FRONT VIEW
Mat: 2024-T3 Aluminum (2) Req’d (Upper and Lower)
R 6,35
(.250)
6,5 (.256)
15
(.590)
30,5
(1.200)
TOP VIEW
8 (.315)
35
(1.378)
A
SCISSORS HINGE
45,5
(1.791)
14
(.551)
33
(1.300)
22 (.866)
R3
(.118)
24
(.944)
SECTION A-A
FRONT VIEW
23
(.905)
27,5
(1.082)
3 (.118)
FULL SIZE
16,5
(.650)
6
(.236)
16
(.630)
LOWER
FULL SIZE
FURIA HELICOPTER TAIL ROTOR CONTROL
Plans Delivery.com
COPYRIGHT©2001 Osvaldo Durana
66

67. 6
(.236)
PEDALS AXLE
LEVER
Mat: 4130 Steel tubing 15,8 (5/8”) O.D. - 2,4 (.095) Wall Thk.
(1) Req’d
FULL SIZE
Mat: 4130 Steel 2 (.0787) Thk (2) req’d
6,35
(.250)
2 (.0787)
8
(.315)
582
(22.913)
28
(1.10)
16
(.630)
90
(3.54)
DETAIL A
19
(3/4”)
1,50
(.058)
Wall Thk
weld Lever
Weld
DETAIL A
10 (.394)
32
(1.260)
8 (.315)
R 85
(3.346)
1/4”-28
UNF
8 (.315)
85
(3.346)
22,2 (7/8”)- 1,60 (.065) Wall Thk
16
(.630)
Axle Threaded ends
Mat: Steel
FULL SIZE
FULL SIZE
195
(7.677)
LEFT PEDAL
DIRECTIONAL CONTROL PEDALS
FRONT VIEW
203
(8.00)
NOTE: Left pedal is fixed to axle by Clevis Pin
Right pedal is free to rotate
FURIA HELICOPTER CONTROL SYSTEM /PEDALS
Plans Delivery.com
COPYRIGHT©2001 Osvaldo Durana
67

68. MAIN LEVER
6,35 (.250)
Mat: 2024-T3 Aluminum 5 (.197) Thk (1) Req’d
30
(1.181)
FULL SIZE
6,35 (.250)
8
(.315)
250
(9.842)
7 (.275)
80
(3.15)
5 (.197)
LEFT PEDAL
HEEL SUPPORT
Mat: 4130 Steel 2 (.080) Thk
(2) Req’d
SIDE VIEW
45
(1.77)
SECTION A-A
Heel Support
FULL SIZE
A
Weld
40
(1.575)
28
(1.10)
8
(.315)
FULL SIZE
15
(.591)
R 10
(.394)
FULL SIZE
FURIA HELICOPTER -
65
(2.56)
A
6,35 (.250)
CONTROL SYSTEM / PEDALS
Plans Delivery.com
COPYRIGHT©2001 Osvaldo Durana
68

69. 460
(18.110)
12
(.472)
21 (.827)
SKIN
96
(3.780)
31 (1.220)
104
(4.094)
Mat: 2024-T3 Aluminum 0,5 (.020) Thk
25,4
(1.00)
REINFORCEMENT
24
(.945)
12
(.472)
FULL SIZE
48
(1.89)
30
(1.181)
13
(.512)
Mat: 2024-T3 Aluminum
(2) Req’d
Mat: 2024-T3 Aluminum
(2) Req’d
Mat: 2024-T3 Aluminum 0,5 (.020) Thk (4) Req’d One on each side (inner side only)
48
(1.89)
BLADE ROOT
BLADE TIP
13,8
(.5433)
43
(1.693)
36
(1.417)
6,35
(.250)
6,35
(.250)
94
(3.700)
85
(3.346)
31
(1.220) 55
(2.165)
10
(.394)
25,4
(1.00)
FURIA HELICOPTER TAIL ROTOR BLADE
Plans Delivery.com
COPYRIGHT©2001 Osvaldo Durana
69

70. CENTRAL GEARBOX
END VIEW
80
(3.15”)
42
(1.65”)
9 (.35”)
1/4” -28 UNF
4 Holes Eq. Sp.
A
Dia 64 (2.520”)
10-32 UNF
(see Bearing cover for
hole position details)
Dia. 70 (2.75”)
Recess to suit
upper Bearing
Cover
2 (.078”)
98
55
(3.85”) (2.16”)
Dia. 45 (1.77”)
A
Material: Aluminum 1- Reqd.
TOP VIEW
FURIA HELICOPTER CENTRAL GEARBOX
Plans Delivery.com
COPYRIGHT©2001 Osvaldo Durana
70

71. CENTRAL GEARBOX
BOTTOM VIEW
FRONT VIEW
Dia 36 (1.41”)
42,4
(1.67”)
Dia 65 (2.56”)
Recess to suit Lower
Bearing Cover
10-32 UNF
36,4
(1.43”)
Dia 64
(2.52”)
Dia 55
(2.16”)
81 (3.188”)
2 (.078”)
Dia 89 (3.50”)
1/4-28”
UNF
Dia 57 (2.24”)
10-32 UNF
44
(1.73”)
FURIA HELICOPTER CENTRAL GEARBOX
Plans Delivery.com
COPYRIGHT©2001 Osvaldo Durana
71

72. COUPLING (Long Axle Central Gearbox)
80,8
(3.18”)
Mat Steel - 1 Req’d.
Dia 68
(2.67”)
40,4
(1.59”)
40,4
(1.59”)
R 2 (.078”)
R 2 (.078”)
45
(1.77”)
38
(1.49”)
84
(3.30”)
R1(.039”)
14.28
(.562”)
3 (.118”)
25.4
(1”)
45
26
(1.02”) (1.77”)
2 (.078”)
15(.59”)
56
(2.20”)
R1(.039”)
3,5
(.137”)
Dia 8
(.314”)
R 8(.314”)
11,28
(.444”)
20
25
(.984”) (.787”)
50
(1.96”)
43,5
(1.71”)
See Details of gear cutting data
on page #59
Dia 14,28
(.562”)
9/16-18
UNF
25
(.984”)
36
(1.41”)
45
(1.77”)
21
(.826”)
Dia 6,35
(.250”)
20
(.787”)
10
(.39”)
CENTRAL GEARBOX
SECTION A-A
19
(.748”)
LONG AXLE
Mat Steel - 1 Req’d
17
(.669”)
25,4
(1”)
27
(1.06”)
5
(.196”)
195
(7.677”)
30
(1.18”)
FURIA HELICOPTER CENTRAL GEARBOX
Plans Delivery.com
COPYRIGHT©2001 Osvaldo Durana
72

73. UPPER BEARING COVER
LOWER BEARING COVER
Material: Aluminum, 1 Reqd.
5 (.197”)
Material: Aluminum, 1 Reqd.
44
(1.73”)
44
(1.73”)
5 (.197”)
Dia 62 (2.44”)
Dia 70
(2.75”)
Dia 57 (2.24”)
Dia 65 (2.55”)
44
55
(1.73”) (2.16”)
45
(1.77”)
50
(1.96”)
40
(1.57”)
12
(.47”)
35
(1.37”)
47
(1.85”)
To suit
Bearing
6005
50
36
(1.96”) (1.41”)
35
(1.37”)
Chamfer
14
(.55”)
24
(.94”)
12
(.47”)
12
(.47”)
22
(.86”)
30
(1.18”)
42
(1.65”)
To suit
Bearing
6004
FURIA HELICOPTER -
CENTRAL GEARBOX BEARING COVERS
Plans Delivery.com
COPYRIGHT©2001 Osvaldo Durana
73

74. 31
(1.22”)
55
(2.16”)
MAIN ROTOR GEARBOX
PINION AXLE
Chamfer
3/4”-16
UNF
14
(.55”)
R 6 (.236”)
Dia 6.35 (.250”)
28,5
(1.12”)
10
(.39”)
Dia 25
16
(.629”) (.984”)
PULLEY SUPPORT
Mat. Aluminum 1 Req’d.
25
(.98”)
16
(.629”)
42
(1.65”)
29
(1.14”)
76
(2.99”)
171
(6.73”)
6
(.23”)
Dia 90
(3.54”)
Dia 84
(3.30”)
12
(.47”)
Dia 68
(2.67”)
59
47
(2.32”) (1.85”)
To suit
Bea.
6005
Dia 40
(1.57”)
41
100
(1.61”) (3.93”)
Dia 8 (.314”) 4
Holes Eq. Sp.
Dia 6.35
(.250”)
6 Holes
EQ.SP.
2-Req’d.
2 (.078”) Thk
Connecting
Rings
FURIA HELICOPTER -
TRANSMISION COMPONENTS
Plans Delivery.com
COPYRIGHT©2001 Osvaldo Durana
74

75. 6
(.23”)
66
(2.59”)
16
(.62”)
3
(.1
18)
ENGINE PULLEY
3
(.1
18)
7,4
(.29”)
16
(.62”)
Mat: Aluminum - 1 Req’d
6
(.23”)
Dia 8
(.314”)
89
(3.50”)
74
(2.91”)
25
(.98”)
58
(2.28”)
116
(4.56”)
R 4 (.157”)
37º
14
(.55”)
FURIA HELICOPTER -
TRANSMISION - ENGINE PULLEY
Plans Delivery.com
COPYRIGHT©2001 Osvaldo Durana
75

76. CENTRAL GEARBOX PULLEY
and Freewheel housing
153
(6.02”)
117
(4.60”)
FREEWHEEL AXLE
Mat: Steel 1req’d
5 (.197”)
19
(748”)
6
(.236”)
25
(.98”)
Chamfer
72
(2.83”)
42
(1.65”)
10
(.393”)
3
(.118”)
66
(2.59”)
16
(.62)
2 (.078”)
7,4
(.29”)
65
(2.56”)
57
(2.24”)
117
(4.60”)
440
(17.32”)
35
(1.377”)
102
(4.01”)
19
(.748”)
Freewheel:
Type 202-...-030 Size 35
Rexnord Antriebstechnik Dortmund
E-mail: info@rexnord-antrieb.de
20
(.787”)
Dia 6,35
(.250”)
38 (1-1/2”)
Transmision shaft
Mat: 4130 Steel Tube O.D. 38
(1-1/2”) Wall Thk. 1,6 (.065”)
1 Req’d
17
(.669”)
32
(1.26”)
17
(.669”)
32
(1.26”)
Dia 6,35
(.250”)
R2(.078”)
39
(1.53”)
2
(.078”)
29
(1.14”)
25
(.984”)
FURIA HELICOPTER TRANSMISION COMPONENTS
Plans Delivery.com
COPYRIGHT©2001 Osvaldo Durana
76

77. SHAFT COUPLINGS
R 22 (.866”)
Dia 68 (2.67”)
Mat: Steel - 2 Req’d.
R 22 (.866”)
R 8 (.314”)
R 8 (.314”)
31
(1.22”)
Dia 8 (.314”)
Dia 8 (.314”)
17,5
(.688”)
Dia 68 (2.67”)
34.7
(1.366”)
Dia 6,35
(.250”)
Dia 6,35
(.250”)
10
(.393”)
25
(.984”)
3,5 (.137”)
32 (1.25”)
Dia
6,35
(.250”)
17,5
(.688”)
46
(1.81”)
Weld
MAIN ROTOR GEARBOX
PINION AXLE COUPLING
70
(2.75”)
Mat: Steel 1-Req’d
10
(.393)
25
(.984”)
40
(1.57”)
Weld
3,5
19
(.748”)
25 (.984”)
29
(1.14”)
84
(3.30”)
LONG/FREEWHEEL AXLE
COUPLING
84 (3.30”)
Mat Steel 1 req’d
FURIA HELICOPTER -
TRANSMISION COMPONENTS
Plans Delivery.com
COPYRIGHT©2001 Osvaldo Durana
77

78. PINION
PINION AXLE
PINION AXLE
COUPLING
MAIN GEARBOX
Note: some elements have not been
depicted to simplify views
CONNECTING DISK
MAST TUBE
SHAFT COUPLING
SHAFT
FURIA HELICOPTER TRANSMISION SECTION VIEW
Plans Delivery.com
COPYRIGHT©2001 Osvaldo Durana
78

79. SHAFT
SHAFT COUPLING
MAST TUBE
CONNECTING DISK
LONG AXLE COUPLING
UPPER BEARING COVER
GEAR (Transmision to Tail Rotor)
Note: Gearbox case have not been depicted to simplify view
LOWER BEARING COUPLING
LONG/FREEWHEELAXLE COUPLING
PRIMARY
STRUCTURE
PULLEY
ENGINE
PULLEY
FREEWHEEL
FREEWHEEL
AXLE
PULLEY SUPPORT
FURIA HELICOPTER TRANSMISION SECTION VIEW
Plans Delivery.com
COPYRIGHT©2001 Osvaldo Durana
79

80. PLANS LICENSE AGREEMENT*
—————————————————————
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This License permits you to use the Plans on a single personal computer or workstation and to make one copy of the Plans in machine-readable form for backup purposes only. Within any such copy, you must reproduce
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FURIA HELICOPTER LICENCE AGREEMENT
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COPYRIGHT©2001 Osvaldo Durana
80