THE FINEST RADIO CONTROL MODELS
R
SPECIFICATIONS ARE SUBJECT TO CHANGE WITHOUT NOTICE.
No. 21702
No. 21705
2
3
4 ~ 5
6 ~ 24
25
26 ~ 35
36
37 ~ 41
42 ~ 44
INDEX
INSTRUCTION MANUAL
REQUIRED FOR OPERATION
RADIO PREPARATION
BEFORE YOU BEGIN
ASSEMBLY
OPERATING YOUR MODEL SAFELY
SETTINGS FLIGHT LESSONS MAINTENANCE
PARTS LIST
EXPLODED VIEW
SPARE & OPTIONAL PARTS
© 1997 KYOSHO
SAFETY PRECAUTIONS
This radio control model is not a toy.
This is a kind of machine including a rotor which rotates with
high speed and has a possibility to be dangerous. You are
responsible for this model's assembly, safe operation (place
to fly, frequency) check and adjustment of the model.
Assemble this kit only in places out of children's reach!
Take enough safety precaution before and after operation.
After every flight, inspect screws and nuts for looseness, and
parts for wear. Any damaged parts should be immediately
replaced, repaired or adjusted for safe operation.
Use only Kyosho genuine parts for replacement.
Failing to do so will result in accidents or malfunction of the
model. Kyosho do not take responsibilities for the accidents
and crashes if using the parts which are not Kyosho genuine
ones.
Always keep this instruction manual ready at hand for quick
reference, even after completing the assembly.
SERIES
RADIO CONTROLLED
.30 ENGINE POWERED
HELICOPTER
NEXUS 30 S TYPE S
AA-size Batteries (for transmitter)
19 ~ 20mm
39 ~ 41mm
33 ~ 36mm
2
REQUIRED FOR OPERATION (1)
2
SUITABLE SERVOS
Engine
Glow Fuel
No. 6054 K&B500H
K&B500H Model Engine Fuel
No. 96411
One-touch Plug Heater
No. 1791
Blitz Starter
No. 1876/No. 39308
Fuel Filter
No. 94402
Medium Strength
No. 94403
Hard Strength
Loctite
1
Radio for engine-powered R/C helicopters,
and dry batteries
Radio for engine-powered
R/C helicopters
This kit requires a radio for engine-powered
R/C helicopters with 5 servos and 1 gyro.
For more information on the radio, refer to
its explanations.
With semi-assembled kits, the engine
coms pre-installed. Install the muffler.
4
Required for engine starting:
5
Glues & Lubes
6
Equipment coming in handy
3
Glow Fuel and Fuel Pump
AAAA
AAAA
The illustrations showing the radio were taken from the Futaba radio explanations.
CAUTION: Only use a radio for R/C heli-
copters! (Any other radio is prohibited!)
Glow Plug
Plug Heater
.30 class engine for helicopters
Engines for R/C models require glow fuel.
Do not use gasoline or kerosene; both
cannot be used! Also, be very care-ful when
han-dling glow fuel which is high-ly inflamma--
ble and high-explosive!
Fuel should contain at least 10% of nitro.
Fuel Pump
m
o
del e
ngin
e fu
el
500H
WARNING: Gasoline
or kerosene cannot
be used!
Starter
Screw Locking Compound /
Screw Cement / Threadlocker
Grease
Epoxy Glue
Instant Glue
12V Battery
Fuel Filter
Grease
Epoxy A
Epoxy B
No. 96506
Ball Diff Grease
GelBoy
No. 96627
No. 71481
Sealed Battery
1
Read through the manual before you begin, so you will have an overall idea of what to do.
BEFORE YOU BEGIN (1)
4
Check all parts. If you find any defective or missing parts, contact your local dealer or our Kyosho Distributor.
2
How to read the instruction manual:
3
Symbols used throughout the instruction manual, comprise:
4
Apply epoxy glue.
Apply instant glue (CA glue, super glue).
Apply grease.
Apply threadlocker (screw cement).
Assemble as many times as
specified (here: twice).
x2
Assemble left and right sides
the same way.
True-to-scale diagram.
Must be purchased separately!
Tentatively tighten.
Drill holes with the specified
diameter (here: 2mm).
Pay close attention here!
Part bags used.
Cut off shaded portion.
2mm
Example
Assemble in the specified
order.
9
HH-2
2
2.6 x 10mm
Cap Screw
1
3 x 3mm
Set Screw
2
2.6mm
3 x 3mm
Tail Rotor Assembly
2.6 x 10mm
2.6mm
92
Key Number, Part Name, True-to-scale
Diagram, Quantity Used
This instruction manual uses seve-
ral symbols. Please note them
during the entire assembly.
All parts except screws are identified by
key numbers. For purchasing spare parts,
find the key no. of the part needed in the
spare part list and refer to the left column
to look up the corresponding order no.
Nylon Nut
BEFORE YOU BEGIN (2)
5
Self-tapping (TP) screws cut threads into the parts when being tightened. Excessive force may
permanently damage parts when tightening TP screws. It is recommended to stop tightening when
the part is attached or when some resistance is felt after the threaded portion enters the plastic.
7
The threads are stripped.Overtightened.
Correct
Wrong
This kit contains screws and hardware in different metric sizes and shapes. Before using them, check the screws on the true-to-scale diagrams on the
left side in each assembly step. Some screws are extras.
6
SCREWS
Screw
Cap Screw
TP
Self-tapping (TP) Screw
TP
TP F/H Screw
Set Screw
OTHER HARDWARE
3x12mm
Screw
3mm
12mm
Flat Head (F/H) Screw
3mm
Washer Nut
3mm
5x10mm
Metal Bushing Bearing
5mm
10mm
4mm
E4
E-ring
6,000
ABOUT THE "PERSONAL FREQUENCY MONITOR"
LED
Before operating your helicopter, plug the crystal of your
frequency into the Personal Fre-quency Monitor. As soon
as you switch it on, you'll know for sure through an interfe--
rence signal and LED lamps whether somebody else is on
your fre-quency or not!
PERSONAL
BAND MONITOR
40MHZ
OFF
ON
KYOSHO
CORPORATION
No.80591
JRMSA
77
KYOSHO CORPRATION
No.80591 (40MHz)
No.80592 (72MHz)
Special crystals are
available at Kyosho!
Inside the kit, you will find assemblies, i.e. sections that are pre-assembled
and hence consist of more than one part. To make sure these assemblies
are safely assembled, check among others their screws for looseness. Only
then, build in the assemblies.
5
1
4 5mm
Set Screw
1
2 10mm
Spring Pin
2
NE-2, NE-6
Tail Drive Gear
Part bags used.
This instruction manual is both for kit No.21705 and semi-assembled kit No.21702 with engine.
When referring to the instructions for completing the assembly, make the following distinctions.
NEXUS 30S type S (assembly kit) : All steps from through .
NEXUS 30S type S (semi-assembled) : All steps from through .
491
4915 28
1
5 13mm
Ball Bearing
1
5 16mm
Ball Bearing
22.5mm
True-to-scale diagram.True-to-scale diagram. Apply epoxy glue.
Firmly tighten the set screw to the flat.
Apply threadlocker
(screw cement).
6
4 5mm
Set Screw
2
3 30mm
Cap Screw
1
3mm
Nylon Nut
1
5 10mm
Ball Bearing
1
1
NE-B, NE-6
Clutch
83
5 16mm
Ball Bearing
1
8 16mm
Ball Bearing
1
2.5 15mm
Pin
1
379A
49
18
382
381
83
380A
378
379A
209
glued
49
383
385
18
384A
Firmly tighten the set
screw to the flat.
3mm
3 30mm
4 mm
pre-installed
pre-installed
pre-installed
4 mm
2
8 12mm
Plastic Bushing
2
2 14mm
Pin
4
3 8mm
F/H Screw
1
3 18mm
Cap Screw
1
3mm
Nylon Nut
5
NE-4
Main Gear
371
59
503
48
46
150
3 8mm
3mm
3 18mm
31
371
371
374
31
59
Mast Assembly
Part bags used.
Tentatively tighten.
4
NE-2, NE-3, NE-4
Mast
2
2
3 12mm
Cap Screw
3 8mm
Washer
3
3 mm
3 8mm
3 12mm
369
Note the direction.
Front
Front
NE-5
Frame
7
Apply threadlocker
(screw cement).
3 15mm
2
3 20mm TP
Screw
4
3 15mm TP
Screw
372
2 8mm
RT/H Screw
2
2 10mm
RT/H Screw
1
3 10mm TP
Screw
1
3 8mm
Washer
1
4
L
Insert Nut (L)
373
2
S
Insert Nut (S)
7
8
3 15mm TP
Screw
4
8 16mm
Ball Bearing
1
6
Part bags used.
49
S
Insert Nut (S)
4
373
Linkage Ball
3
212
E E2.0
E-ring
2
230
3 14mm
Shaft
1
33
Align both marks.
49
387
373
373
3 15mm
388
418
230
373
372
370
372
230
212
33
3 10mm
3 8mm
2 10mm
212
212
188
2 8mm
2 8mm
3 15mm
3 15mm
3 20mm
NE-2, NE-5, NE-6
Mast
NE-4
Control Lever
NE-5
Frame
8
2
3 12mm
Cap Screw
8
3 15mm TP
Screw
2
3 20mm TP
Screw
3 8mm
Washer
1
2 10mm
RT/H Screw
2
4
1
3 6mm
Cap Screw
3 12mm
Cap Screw
2mm
Nut
1
Linkage Ball
9
10
NE-6, NE-8
Engine
212
502
212
502
376
375
3 6mm
3 12mm
3 12mm
3 6mm
Part bags used.
Tentatively tighten.
Supplied with the
engine.
Engine.
Supplied with the
engine.
3 6mm
2 10mm
2mm
2mm
Must be purchased
separately!
2mm
2mm
Drill holes with the specified
diameter (here: 2mm).
388
387
387
535
3 12mm
3 15mm
3 15mm
3 20mm
NE-5, NE-6
Frame
Note the direction.
O.S.32SX
With an O.S. 32SX engine,
replace this part with the
one supplied with the kit.
Apply threadlocker
(screw cement).
3 15mm
3 20mm
375
375
375
Engine.
Parallel
Install so it is parallel with the
center line of the engine.
2
13 16mm
Shim
2
13 x 16mm
Shim
Main Gear Backlash Adjustment.
Remove the lower ball bearing case and insert shims as per
diagram. The number of shims used will affect the backlash.
387
9
12
13
3 14mm
Cap Screw
4
3 8mm
Washer
4
11
Part bags used.
Assemble left and right sides the same way.
Silicone Tube (thick)
Fit together.
Ensure and do not contact.
Adjust the backlash as per diagram and
explanations.
A
381
381
377
377 381
377
3 14mm
3 8mm
Tentatively tighten.
B
393
Silicone Tube (thick)
393
Silicone Tube (thin)
392
389
390
391
110
NE-6
Engine
NE-7
Fuel Tank
Main Gear
Apply threadlocker
(screw cement).
10
B A
Tighten the screws in the
order B and A with two
sheets of paper inserted
between the gears.
2
3 10mm TP
Screw
15
1
3 20mm TP
Screw
1
Aileron Lever Collar
14
16
37
394
533
400
3 10mm
4mm
3mm
3 118mm
4 14mm
3 35mm
3 20mm
3 8mm
4 5mm
3mm
401
402
398
397
399
37
36
30
3 8mm
Washer
1
Assemble left and right sides the same way.
Part bags used.
NE-7
Fuel Tank
NE-9
Muffler
NE-4
Control Lever
1
4 5mm
Screw
1
4 14mm
Cap Screw
2
3 35mm
Cap Screw
1
3 118mm
Screw
2
3mm
Nut
4mm
Nut
1
11
2 8mm
RT/H Screw
2
3 10mm TP
Screw
2
3 5mm
Collar
2
2
3 4mm
Set Screw
1
4 5mm
Set Screw
18
19
3 15mm TP
Screw
4
3 25mm TP
Screw
2
17
Part bags used.
352
5 8mm
Plastic Bushing
2
351
Linkage Ball
2
212
Hiller Control Lever Bushing
1
6
3mm
Stopper
2
436
352
358
352
395
351
350
212
212
351
3 25mm
3 15mm
3 10mm
3 10mm
3 15mm
Note the direction.
Note the direction.
2 8mm
2 8mm
436
4
3 4mm
4
436
6
7
Tentatively tighten.
2
1
4
5
3
Assemble in the specified
order.
4 5mm
3 4mm
NE-5, NE-12
Frame
NE-1, NE-13
Rotor Head
NE-1, NE-2
Rotor Head
Assemble left and right
sides the same way.
Apply threadlocker
(screw cement).
12
Apply grease.Apply grease.
Hold in place with . Tighten the set screw when and are parallel.
1
3 25mm
Cap Screw
1
3mm
Nylon Nut
20
21
Part bags used.
Assemble in the specified order.
3mm
3 25mm
30mm
About 30mm
Parallel
( jig )
2mm
Hex Wrench 2mm
A Ð A '
Tighten the set screws when A and A ' are equally long.
To balance left and right ends, place a piece of tape to the lighter end.
Parallel
NE-1
Rotor Head
NE-1
Rotor Head
13
2.6mm
Nut
1
2
1
1
2.6 8mm
Screw
2.6 14mm
Screw
3 4mm
Set Screw
4 5mm
Set Screw
3
1
2 12mm
Pin
23
24
2 10mm
RT/H Screw
2
3 6mm TP
Screw
4
4mm
Nylon Nut
2
5 7mm
Spacer
2
10 13mm
Spacer
2
22
Part bags used. Apply threadlocker
(screw cement).
220mm 120mm
Positioning
403
403
403
405
408
404
177
235
403
factory - inserted
Linkage Ball
2
212
16
17
4
5 13mm
Ball Bearing
56
2 10mm
3 6mm
3 4mm
4mm
56
56
17
16
5 10mm
Ball Bearing
2
83
8 14mm
Ball Bearing
2
76
79
78
79
84
83
537
80
79
79
Pass through this hole.
2.6mm
4 5mm
2.6 8mm
2.6 14mm
83
81
77
75
76
543210 109876 1514131211 2019181716 2524232221
cm
NE-1, NE-2
Rotor Head
NE-12, NE-13
Tail Boom
NE-2, NE-10
Tail Gearbox
x2
Assemble as many times as
specified (here: twice).
x2
Assemble in the
specified order.
2
1
3
Assemble left and right
sides the same way.
353A
212
Apply grease.
14
D
Flat end of shaft
Click in.
2
2
3 4mm
Set Screw (Special type)
3 14mm
Cap Screw
2
3 6mm
Washer
2
2 10mm
RT/H Screw
26
1
2 14mm
Cap Screw
1
2mm
Washer
1
2 3mm
Collar
25
27
5 10mm
Ball Bearing
4
83
6 10mm
Metal Bushing
2
232
438
2 8mm
Pin
4
2.6 8mm
Cap Screw
2
3 16mm
Cap Screw
4
2.6mm
Nylon Nut
2
3mm
Nylon Nut
2
180
Linkage Ball
2
212
27
Apply threadlocker (screw cement).
83
3 14mm
3 16mm
2 10mm
3mm
2.6mm
2.6 8mm
3 6mm
Fasten both 3X4mm set screws
onto the spots indicated.
Reverse Screw
Tighten the screws ensuring
can still move.
180
232
178
538
538
86
87
244
210
210
210
539
211
245
91
243
438
Assemble left and right
sides the same way.
2 14mm
2mm
27
Tail Rotor
Part bags used.
Apply grease.
NE-10
Control Lever
NE-10
Tail Rotor
NE-2, NE-10
15
3 8mm TP
Screw
2
3 18mm TP
Screw
4
3 4mm
Set Screw
4
12
29
30
3 10mm TP
Screw
2
3 25mm
Cap Screw
2
3mm
Nylon Nut
2
28
Part bags used.
True-to-scale diagram.
430
10
4.8mm
Ball End
2
2 40mm
Adjustable Rod
359
2
2 55mm
Adjustable Rod
368
2
2 62mm
Adjustable Rod
10
430 359 368
368
, ,
359
430
10
3 10mm
3 8mm
3 18mm
3 18mm
3 25mm
3mm
107
103
102
410
181
74
72
405
102
25mm
3 4mm
x2
Assemble as many times as
specified (here: twice).
x2
Stabilizer Control Rod
49mm
about 49mm
Pitch Rod
43.5mm
about 43.5mm
Stabilizer Rod
25mm
about 25mm
Tail Unit
NE-12
Skid
NE-8, NE-11
Rotor Head
NE-1
16
Tentatively tighten.
1
1
3 20mm
Cap Screw
3mm
Nylon Nut
20
2.6 12mm TP
Screw
31
32
Pitch Control Servo
Elevator Control Servo
Throttle Control Servo
Rudder Control Servo
Aileron Control Servo
2.6 12mm
3 20mm
3mm
2.6 12mm
Stabilizer Control Rod
Stabilizer Rod
Pitch Rod
Stabilizer Control Rod
Stabilizer Rod
Pitch Rod
NE-1
Rotor Head
NE-8
Radio
Note the direction of each servo.
96
Part bags used.
Assemble left and right sides the same way.
17
1
1
4.8mm
Ball End
2 100mm
Adjuster Rod
34
Part bags used.
33
412
10
Vertical
Down Up
Cut off shaded portion.
10
412
Switch
Gain Controller
Gyro Amp
Receiver
Gyro
Switch
153
153
153
153
Wrap the receiver in sponge for
protection against vibration.
Make sure the gyro does not
contact the frame.
Follow the radio instruction
manual for connecting.
Fuel Tank
10mm
About 10mm
95mm
about 95mm
NiCd Battery
Cords
97
153
152
NE-8
Elevator Linkage
543210 109876
cm
NE-8,NE-11
Radio
Must be purchased separately!
18
Neutral
35
36
NE-8
1
1
4.8mm
Ball End
2 109mm
Adjuster Rod
411
10
1
1.7 290mm
Rod
409
Parallel
Horizontal
Low
High
10
411
409
Left
10mm
About 10mm
90
Right
Cut off shaded portion.
Must be purchased separately!
Part bags used.
8mm
About 8mm
100mm
about 100mm
10 9 8 7 6
cm
Pitch Linkage
NE-8
Rudder Linkage
Neutral
5 4 3 2 1 0
Neutral
19
38
Part bags used.
37
1
1
4.8mm
Ball End
2 109mm
Adjuster Rod
411
10
Left Right
1
1
4.8mm
Ball End
2 100mm
Adjuster Rod
412
10
Choose the appropriate hole in the servo horn and adjust with the length of the throttle linkage
so the throttle lever will travel most when the throttle control servo is in high or low throttle positions.
High
Throttle Lever
Low
NE-8
Aileron Linkage
NE-8
Throttle Linkage
WARNING :
10
412
91mm
about 91mm
Ensure the throttle servo moves into the correct direction! If it moves into the
opposite direction, the main rotor will rotate at high rpm when starting the engine.
This is dangerous as it may result in damages and, worse, serious accidents!
10mm
About 10mm
13mm
About 13mm
10
10
10
411
Cut off shaded portion.
Must be purchased separately!
543210 109876
cm
20
Vertical
Neutral
2
2
2
3 4mm
Set Screw
3 18mm
Cap Screw
4
2 5mm TP
Screw
2
3 10mm TP
Screw
40
2
3 25mm
Screw
39
41
3mm
Nylon Nut
Tighten the set screw when a 90¡ angle
is produced.
After installing , tighten
both screws.
Rotate the gear and check if the tail rotor rotates.
Insert the tail boom up to the mark indicated.
Fit together.
Tail Boom
90
420
406
406
3 18mm
3 4mm
3mm
3mm
60mm
about 60mm
1
3 20mm
Cap Screw
1
3mm
Nylon Nut
407
406
407
241
241
237
238
239
240
3 20mm
3 10mm
2 5mm
3 25mm
2 5mm
x2
Assemble as many times as
specified (here: twice).
x2
Part bags used.
Assemble left and right
sides the same way.
1
4
1
3
2
2
Assemble in the
specified order.
NE-5, NE-8
Tail Boom
NE-11, NE-12, NE-13
Tail Boom
NE-8
Body Mount
Apply instant glue
(CA glue, super glue).
21
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