SPECIFICATIONS ARE SUBJECT TO CHANGE WITHOUT NOTICE.
No.40904
No.40905
LENGTH : 770 mm
LENGTH : 770 mm
OPERATING YOUR
MODEL SAFELY
17
RADIO PREPARATION
3
BEFORE YOU BEGIN
2 3
ASSEMBLY
16
MAST ADJUSTMENT
FUNDAMENTALS OF SAILING
4 15
SPARE PARTS
OPTIONAL PARTS
18
REQUIRED FOR OPERATION
TOOLS REQUIRED
2
THE FINEST RADIO CONTROL MODELS
R
INSTRUCTION MANUAL
SAFETY PRECAUTIONS
This radio control model is not a toy!
Before commencing assembly, please read these instructions thoroughly!
© 2000 KYOSHO
RADIO CONTROLLED RACING YACHT
SEADOLPHIN 770
First-time builders should seek the advice of experienced modellers
before commencing assembly and if they do not fully understand
any part of the construction.
Assemble this kit only in places out of childrenÕs reach!
Take enough safety precautions prior to operating this model.
You are responsible for this modelÕs assembly and safe operation!
Always keep this instruction manual ready at hand for quick
reference, even after completing the assembly.
TOOLS REQUIRED
Sharp Hobby Knife
Phillips Screwdriver (L.M.S) Needle Nose Pliers
Awl
Scissors
Wire Cutters
Cross Lench
Tape
Water-proofing Tape,
or Vinyl Tape
Instant Glue
Sand Paper
1
Read through the manual before you begin, so
you will have an overall idea of what to do.
1 BEFORE YOU BEGIN (1)
Check all parts. If you find any defective or missing parts,
contact your local dealer or our Kyosho Distributor.
2
3
Symbols used throughout the instruction manual, comprise:
Do not do that!
REQUIRED FOR OPERATION
2
Stick-type 2 channel radio
3 8
AA-size Batteries
(For Transmitter) 8 pcs.
For proper radio handling, refer to its manual.
AAAA
AAAA
2 2
2 channel & 2 servo radio for R/C models, and battery box.
Battery Box
AAAA
4
AA-size Batteries
(For Receiver) 4 pcs.
If already supplied with the radio,
there is no need to purchase a
battery box separately.
If using a radio you are in possession of, check the dimensions
of its servos against the diagram below.You can control sail with
standard type servo. But we recommend using sail-servo to get
best performance.
< Suitable servo dimensions >
( ) dimensions are for sail-servo size.
With a standard radio
approx. 40mm (44mm)
approx. 20mm (23mm)
approx. 36mm (43mm)
Apply instant glue (CA glue, super glue).
Assemble as many times as specified
(here: twice).
x2
Assemble left and right sides the
same way.
Must be purchased separately!
Tentatively tighten.
Cut off excess.
Drill holes with the specified diameter
(here: 2mm).
Ensure smooth non-binding movement
while assembling.
Pay close attention here!
Assemble in the specified order.
2mm
Cut off shaded portion.
Only supplied with complete sets.
Must be purchsed separately with other sets.
Make a knot.
30mm
Silicon Sealant
SILICON
Fill in with Silicon Sealant.
2
2 BEFORE YOU BEGIN (2)
5
The threads are stripped.Overtightened.
4
Types of screws:
Screw
Set ScrewSelf-tapping (TP) Screw
How size of screw is given:
Screw
3mm
12mm
TP
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 securely attached or when some resistance is felt after
the threaded portion enters the plastic.
This kit contains many screws in and other hardware different metric
sizes and shapes. For your reference, the figures in the manual
show actual sizes. (Some screws are extras.)
CH-2 CH-1
BATT.
RADIO PREPARATION
Transmitter Modification
Set up a radio control system as indicated below.
1
Plug in connectors.
2
Install the AA-size batteries.
3
Extend the transmitter antenna. If not, the
range of the transmitter will not be sufficient!
4
Undo the receiver antenna. If not, the
range of the receiver will not be sufficient!
5
Center all trims. (Transmitter)
6
Switch on. (Transmitter)
7
Switch on. (Receiver)
8
Check that the servos move acc-
ording to your inputs. (Transmitter)
10
Switch off. (Transmitter)
11
Retract the antenna. (Transmitter)
9
Switch off. (Receiver)
Antenna
Connector
Receiver
Connector
Rudder Stick
Rudder Servo
Sail Control Servo
Switch
Battery Box
CH.2
CH.1
BATT
Rudder Trim
Sail Control Stick
Sail Control Trim
Stick for sail control
to open and
close.
For adjusting sail closed
angle.
Rudder Stick
In addition to this page, read the instruc-tion
manual supplied with your radio as well.
For steering (left and
right bends).
CH-2 CH-1
BATT.
CH-2 CH-1
BATT.
Rudder Trim
For adjusting straightline
running.
Sail Control Stick
Sail Control Trim
Battery Cover
Handle
Antenna
Switch
3
Switch the sail control reverse switch
(transmitter).
Modify your transmitter so the sail control stick will remain in any position you moved it to, even when releasing it. For this, remove
the little spring which makes the sail control stick recoil into neutral position. This modification will make sailing much easier. For
more details, refer to the trans-mitter instruction manual.
1.5mm
1.5mm
1.5mm
1.5mm
1.5mm
1.5mm
2mm
1.5mm
1.5mm
3
1
2
3
4
4
Smaller curve.
Front
G-6
Larger curve.
Front
Note the direction.
4
2
Hull
2mm
Drill holes with the specified
diameter (here: 2mm).
2mm
Pay close attention here!
3
Hull
Stand
1
Cut off shaded portion.
Apply instant glue (CA glue, super glue).
2x8mm
2x8mm
5
5
6
6
7
7
8
Note the direction.
Top
Bottom
Top
Bottom
Cut after glue it here.
Note the direction.
Ensure no space remains
for waterproof.
Ensure no space remains
for waterproof.
I-5
G-4
G-4
H-3
I-3
Ensure no space remains
for waterproof.
8
H-3
0.5mm
0.5mm
Ensure no space remains
for waterproof.
Front
5
5
Hull
7 x 8 x 81mm
Pipe
4 x 5 x 91mm
Pipe
3 x 4 x 27mm
Pipe
Pay close attention here!
6
Hull
2 x 8mm
TP Screw
Hull
4
Cut off shaded portion.
2
Apply instant glue (CA glue, super glue).
Cut off excess.
D-2
D-3
D-4
D-4
E-3
2x12mm
2x12mm
2x12mm
G-1
G-5
G-5
G-1
G-3
G-2
G-2
2x8mm
A
A
A
A
A
A
A
C
C
2x8mm
2x8mm
2x8mm
2x8mm
2x8mm
2x8mm
2x8mm
2x8mm
A
2x8mm
2x8mm
6
8
Hull
Pay close attention here!
9
Hull
Hull
7
2 x 8mm
TP Screw
20
2 x 8mm
TP Screw
2
2 x 12mm
TP Screw
4
Apply instant glue (CA glue, super glue).
Ensure smooth non-binding
movement while assembling.
Servo
x2
10
11
12
F-4
9
1
3
2
2
Fix with Fitting screw as
shown.
11
11
Tentatively fix with tape.
Tentatively fix with tape.
Pass a cord through the snap ring.
4
5
Pull the cord until the knot appears
from hole.
1
For more water-proofing, apply Kyosho water-proofing tape (No.94752)
or vinyl tape around the connection of servo, and silicon sealant around
the root of the cords.
7
11
Hull
3 x 10mm
Fitting Screw
1
Pay close attention here!
12
Radio
Hull
10
Ensure smooth non-binding
movement while assembling.
Assemble in the specified
order.
10
Assemble as many times as specified
(here: twice).
x2
Fill in with Silicon Sealant.
Only supplied with complete sets.
Must be purchsed separately with other sets.
13mm
Sail Control Servo
<In case to use standard servo for sail control.>
<In case to use sail-servo for sail control.>
Rudder Servo
2mm
13
14
2.6x8mm
2.6x8mm
181mm
H-2
H-2
Front
Front
Front
Same direction.
Opposite direction.
Use this hole.
Use this hole.
Use this hole.
2x8mm
parallel
Use seconds hole from inside.
8
14
Radio
2mm
Drill holes with the specified
diameter (here: 2mm).
2mm
Pay close attention here!
15
Radio
Radio
13
TP
8
2.6 x 8mm
TP Screw
2 x 8mm
TP Screw
2
Only supplied with complete sets.
Must be purchsed separately with other sets.
Cut off shaded portion.
Do not do that!
Sail control stick at full open position
Adjust servo moving range to do
not exceed from this hole.
Receiver
12
15
H-1
2x8mm
2x8mm
E-2
2x8mm
12
12
11
11
Through the cord which
tentatively fixed at section .
Switch
H-1
40mm
8mm
8mm
Use this hole.
Plug in.
9
17
Radio
Pay close attention here!
18
Radio
Radio
16
2 x 8mm
TP Screw
4
2 x 8mm
TP Screw
2
Only supplied with complete sets.
Must be purchsed separately with other sets.
Do not do that!
Cut off shaded portion.
16
17
18
18
19
19
19
19
18
D-5
F-5
F-2
F-1
F-1
F-2
D-1
C
Plug in.
Attach the antenna with adhesive tape to
the inside of the hull.
Battery Holder
2x8mm
Front
Front
10
20
Hull
21
Mast
Radio
19
2 x 8mm
TP Screw
2
Ring
8
2
4mm
Nut
Apply instant glue (CA glue, super glue).
Only supplied with complete sets.
Must be purchsed separately with other sets.
19
Pay close attention here!
x8
1
2
3
11
20
19
11
D-7
D-8
D-1
F-1
F-2
D-7
F-5
D-6
F-3
E-1
C
D-8
2x8mm
2x8mm
2x8mm
2x8mm
2x8mm
90mm
30mm
245mm
275mm
230mm
TOP
View from the top.
View from the bottom.
E-5
11
11
11
11
Adjust the position.
11
23
Mast
Pay close attention here!
24
Mast
Mast
22
2 x 8mm
TP Screw
8
2 x 8mm
TP Screw
3
Ring
1
19
01234567891011121314152122232425 1617189120
Make a knot.
Assemble in the specified
order.
Assemble as many times as specified
(here: twice).
x2
11
11
Front
1
2
3
B
B
B
B
E-6
B
B
19
19
21
11
11
11
23
23
2mm ring.
11
11
11
11
11
11
22
12
26
Mast
Assemble left and right sides
the same way.
Pay close attention here!
Mast
25
Hook
3
Wiring Hook
1
22
Ring
2
19
23
Assemble in the specified
order.
Make a knot.
11
B
B
B B
B
B
20cm
2x8mm
B
11
11
23
Tentatively fix with tape.
The 30cm cord at section .
Take up the slack in the
cord with adjusting B.
E-4
11
11
11
Wind around 5 times.
13
28
Mast
Assemble left and right sides
the same way.
29
Hull
Mast
27
Hook
2
23
Make a knot.
2 x 8mm
TP Screw
2
Sail control stick and trim lever are at bottom position.
11
< >
< When the sails are closed. >
< >
< When the sails are open. >
Adjust with B the opening and closing
of both sails according to the position
of the sail control stick.
Sail Control Stick
Sail Control Stick
Sail Control Servo
1¡
Sail Control Servo
Sails
Sails
12
12
B
B B
B
G-2
5mm
Make a knot.
11
11
11
11
11
The 110cm cord which tentatively fixed
at section .
11
11
11
14
31
Hull
Pay close attention here!
32
Mast
Radio
30
Apply instant glue (CA glue, super glue).
Make a knot.
I-2
I-1
I-4
Move each cord adjuster depend
on wind condition.
Apply the decals to the spots indicated.
Check the cords stay at tight when cruising.
Gentle wind
Gentle wind
Strong wind
Strong wind Gentle wind Strong wind
Open
Front
Close
Front
15
34
Sail
35
Decals
Hull
33
Apply instant glue (CA glue, super glue).
The property of a straight sailing yacht to point its bow into the wind- is called Òweather
helmÓ. The property to point its bow away from the wind, is called Òlee helmÓ. Both
properties can be adjusted by tilting the mast back or forth using the rigging cords.
Adjust so the yacht de-monstrates slight Òweather helmÓ properties.
Wind
Weather Helm
Lee Helm
Weather Helm
Lee Helm
B
C
A
Wind
A
Rudder ...... Proceed into wind (toward A)
by tacking (zigzagging).
Sails .......... Keep sails without making
them shiver.
Rudder ..... When bow heads for B, return
rudder to neutral position.
Sails ......... Set sails perpendicular to wind.
Rudder ..... Slowly move rudder to left.
Sails
.......
Maintain sails as they are.
A
Rudder ..... Proceed into wind (toward A)
by tacking (zigzagging).
Sails
.......
Maintain sails without making
them shiver.
Rudder ..... Return rudder to neutral position.
Sails
.......
Slowly open sails without making
them shiver.
Rudder ..... Steer hard to left.
Sails
.......
At the same time, close sails.
Rudder ...... When bow is on course towards C,
return rudder to neutral position.
Sails
........
Maintain sails as they are.
How to control rudder and sail movement
for skillful sailing.
45
The closest possible heading into the wind is a little
over 45¡ to either side of the wind. Any closer and
the sails will shiver (flap uselessly).
16
MAST ADJUSTMENT
FUNDAMENTALS OF SAILING
With R/C yachts, discover a new
world of pleasure. Whether you
sail your yacht on ponds, lakes,
rivers or elsewhere, take precau-
tionary measures to avoid acci-
dents.
Warning!
Avoid windy and stormy weather since it is impossible
to sail your yacht.
Avoid closing sails by force when standard servo is in use.
OFF
OFF ON
OFF
ON
OPERATING YOUR MODEL SAFELY
Before Running
Kyosho R/C models can move at
high speed and therefore cause
serious injury to people or damage
to property. It is your responsibility
to operate your model safely.
For handling the radio properly,
refer to its instruction manual.
Ensure all rigging cords are taut
and adjusted as per instruction
manual.
If the yacht begins to move by it-
self, somebody else is on your
frequency. Do not operate it under
such conditions for it may go out of
control.
Fully extend
the transmitter
antenna.
Switch on the transmitter.
Switch on the receiver.
While Running
Ensure the yacht turns as per
transmitter input. (rudder control
stick)
Ensure the sails open and close
as per your transmitter inputs.
(sail control stick)
After Running
OFF
Switch off the receiver.
OFF
Switch off the transmitter.
Cautions for Safety
ON
ON
OFF
Never sail your yacht near people
or in places with strong currents!
Never sail your yacht in unsafe
places!
Should water come inside the
yacht, wipe it up and let dry
the inside.
With light winds or your yacht run-
ning at faster speed, close the
sails.
Put the sail boat to water, expos-
ing its sails to the wind blowing
from the side.
Never swim after your yacht to
retrieve it! This is very dangerous
to life!
After sailing, wipe the hull dry and
regrease all moving and rotating
parts.
With strong winds or your yacht
running at low speed, open the
sails.
Kinds of sailing
270¡
45¡ 45¡
Wind
It is impossible to sail
directly into the wind.
ABEAM ABEAM
RUNNING
QUARTERQUARTER
CLOSE HAULEDCLOSE HAULED
DANGER
Wind
Starboard Tack: sails are
on the left side.
Port Tack: sails are on
the right side.
17
Wind
Wind
Some of the parts included are not available as spare parts.
Purchase optional parts instead.
900 200
Kevlar Cord Set
94601
150 200
for receiver & battery box.
Waterproofing Bag
TR-12
No. Part Names Description No. Part Names Description
18
SPARE PARTS
FOR JAPANESE MARKET ONLY.
OPTIONAL PARTS
FOR JAPANESE MARKET ONLY.
00
0 0 2 1 0 4 4 7 2 7 1
1 6 8 0
0 0 2 1 0 4
4 7 2 7 1
1 6 8 0
1,400
200
80
1,680
(1)
(2)
(2)
(3)
(4)
(1)
"Kyosho Direct-Mail-Parts-Order-System" is available only for Japanese market
40904
The servise mentioned below is available only for Japanese market.
243-0034 153
TEL.046- 9-4115
( ) 10 00 18 00
PRINTED IN KOREA68430006-1
/
