Kyosho VIPER User manual

ELECTRIC POWERED RADIO CONTROL
HIGH PERFORMANCE
SPORT BOAT
'
•HIGH SPEED "V" HULL FOR STABILITY IN SMOOTH AND ROUGH WATER
•QUICK EASY ASSEMBLY
•HIGH TORQUE
LEMANS 360ST MOTOR AND SPEED CONTROL INCLUDED
•EFFICIENT DIRECT-DRIVE SYSTEM FOR LOW MAINTENANCE AND HIGH
PERFORMANCE
•OFFERS MORE RUN TIME AND MANEUVERABILITY THAN OTHER LARGER
BOATS
[b~!f!l®IJ'[}:D g ~~@[iffi] liiiiJ
REQUIRES ( NOT INCLUDED )
RADIO: 2 Channel
BATTERY: 7.2V 1200·1700mAh
ENTIRE CONTENTS© 1 991 , HOBBico ·,I NC.
KIT No. 2281
V1.0

WARRANTY INFORMATION
90 Day Limited Warranty
It is expressly understood that the standard
replacement warranty
of the seller, a copy of which
is annexed to and made
part · of this agreement, shall
be in lieu of any and all other warranties, including
the warranties of merchantability and fitness for use.
The
so le responsibility of the sellershall be in its
replacement obligations contained in this standard
warranty.
Kyosho's " Viper " is warranted
to the original owner
to be free of defects in parts or workmanship for a
period
of 90 days from the date of purchase. During
this time Kyosho's authoriz
ed U.S. repair facility,
Hobby Services, will repair
or replace at option any
defective parts without charge.
Limit
of our Liability: Our liability under this warranty
is limited to the repair
or replacement of defect or
defective parts by Hobby Services and does not
include shipping expense.
Exclusion and/or Voidance
of Warranty: This
warranty does
not apply to damage or defects
resulting from misuse, abnormal service,
damage in
shipment,
or damage resulting from a crash. The
warranty is voided if the model is modified, altered,
or repaired by anyone otherthan Hobby Services.
This warranty gives
you specific legal rights, and you
may have other rights that vary from state to state
within the U.S.
PROOF OF DATE OF PURCHASE
Itis the responsibility of the purchaser to show proof
of the date of purchase if a model's warranty is to
honored. Your original purchase invoice
or receipt
will suffice for this. Your Kyosho " Viper " should be
returned directly to Hobby Services for warranty
work. The address is:
_,-
1-Y'h ~ , by Services
10 Interstate Drive
.ampaign, Illinois 61821
r. n: Warranty Department
Phone: [phone]
SHIPPING INFORMATION
Please follow steps 1 through 4 in "Repair Service"
when returning a model to H obby Services. (See
Below).
We are sorry , but we cannot be responsible for crash
damage and/or loss of kits, engines, accessories,
etc.
REPAIR SERVICE
Should your model be past the 90 day warranty
period,
or should your kit be voided or excluded from
warranty coverage, repairs
are available for a
nominal cost through Kyosho 's authorized U.S.
repair facility, Hobby Services. Since
we want you to
be happy with your purchase for a long time, Hobby
Services employs a full-time in-house service staff.
They have the professional knowledge and the
sophisticated equipment and parts available to
service your model for years to come . When
returni
ng your model, whether for warranty or repair
service, please
be sure to follow the instructi ons
listed below. This will help the technician
troubleshoot
the system, repair it, and return it to
you as quickly as possible.
1.)
Under all circumstances, return the ENTIRE
system.
2.)
Disconnect the receiver battery switch
harness, and make sure
the transmitter is
turned
off .
3.) Send written instructions which include:
proof of purchase date (your store receipt or
purchase invoice), a list of all items returned,
a
THOROUGH exp lanation of the problem
and
the service needed , and your phone
number where you can be reached during the
day.
4.)
Also include your full return address.
R
epair charges and postage may be prepaid or
billed C.O.D. Additional postage charges will be
applied for non -warranty returns. All repairs shipped
outside the United States must be prepaid in U.S.
funds only.
-2-

Important! BeforeYou Begin
Th is is a sophisticated model with a large number of moving parts. Before you 8.) Avoid using power screwdrivers when assembling your kit.. They
tend
to overtighten screws.
begin assembly, take a look through the box
and these instructions carefully to
decide whether or
not you are ready for this challenge! If you do not think th at
this type of model is for you, it may be returned to the dealer as long as it is 9.) Take your time and read the directions thoroughly. It's not how fast
you can assemble thekitbut
how fast it goes onceassembled.
NEW and UNUSED. UNDER NO CIRCUMSTANCES CAN YOUR DEALER
ACCEPT A KIT FOR RETURN IF ASSEMBLY HAS ALR EADY BEGUN! If this
is notwhatyou bargained for, then
go no further and return this kitto the dealer 10.)
Trial fit all parts to ensure proper li t belore attaching them
permanently.
immed
ia tely. BUT, if a little maintenance, doesn't bother you, and the thrill of
high performance boating is for you, then don't hesitate another minute! IT IS
VERY IMPORTAN T TO read through this entire manual thoroughly to 11.) Do not
use excessive Ioree when tighteni ng sell-tappi ng type screws
into plastic. Overtightening will cause the threaded portion ol the
plastic to strip. It is recommended to stop tightening when some
resistance is felt afterthe threaded portion enters the plastic.
familiarize yourself with the parts and methods
of construction used BEFORE
actually starting to build.
HOW TO USE THIS MANUAL
On each page you will find a directory of small pans that will be used in each
step. Forease of identification, these parts are shown actual size enabling you
to place a screw directly
on the picture to ensure you have selected the
appropriate size.
TYPE OF SCREW
li
o;; ............... ;-;-:;iifl::i"i'<u«>CilJTi'j \::::"1- QUANTITY USED
SIZE OF
___ M3 x 10 SITSCREW (2) IN THIS STEP
SCREW
~
On Page 4 you will find a complete list of parts used in this kitincluding the part
number and total quantity supplied in the kit and in whi
ch step it is used. When
ordering replacement or optional parts. see page 4 for a
comp lete listing of
partsand stock numbers.
HELPFULTIPS AND PRECAUTIONS
Some precautions need to be observed when bu ilding your "Viper" to avoid
problems.
1.)
2.)
Use a muffin tin oregg carton to separate screws. nuts. washers. etc.
This will make
it easier tolocate the correctpart.
Place a mat or towel
on the work surface where you will be building
the
kit. This will preventparts from rolling oH and will protect the work
surface at the same time.
3.) Try to avoid working over a shag
carpet In the event that a small
partor screw should fallonto the carpet,
it will be difficult tofind.
4.)
5.)
Avoid getting products like engine cleaner or screw lock on the plastic
parts. They can have a serious effect
on yourmodel.
Avoid operating the • Viper • in very oold temperatures. Both resin
and metal parts become brittle at low temperatures. In addition.
grease and o il become very thick causing premature wear and
deficientperformance.
Removeall flashing from the parts beforeassembly.
METRICNUTSAND BOLTS
All nuts bolts used throughout this k it are metric size. Therefore. some ol the
notations may not be familiar to you. An M3 nut is a 3 millimeter (3mm) nut.
An M3 x 15 screw is 3mm diameter and 15mm long. Some round parts
may
be labeled as a "4mm Washer" (a washer with a 4mm inside diameter)'or a
"3mm Bushing" (a bushing with a 3mm inside diameter). At various points
throughout the manual these parts are labeled and pictured in their actual
size
on the left hand side of the the page. For your reference. 1 millimeter equals
approximately .039 inches.
M3X 15SCREW M4 WASHER
3mm
A few dilferent types of screws are used in the construction of your model.
He re are some examples and how they will be indicated in the instruct io ns for
exampl e. SellTapping will simply be SI T screw.
SELF TAPPING (SfT)
Qiiiiii!IIBP
I " HAS A TAPER
COARSE THREAD
SETSCREW
@))
SCREW
FINE THREAD
When you see th is symbol, there are steps that you should
pay extraparticul ar attention to when building this model.
-~
.. .. . .... .....
--
Ensure thatall parts are will lubricated where the instructions indicate
--~~~ th ~ e ~ us _ e _ o _ f _ g _ re _ a _ s _ e _ · -------------------------------------------------------------------------------- ~~~ - :-
These tools are
6.)
7.)
needed toassemble NEEDLENOSE PUERS
AWL ~ .,.
lheViper. ~
PHILUPS SCREWDRIVER
[
HOBBY KNIFE
. 3 -

'
,
b.
.
RADIO OPERATIONAL CHECK
Thoroug hl y read and follow the instructions supplied wilh your radio system.
The following instruc
ti ons area general procedure fortesting the op er ation of
yourradio system.
An operationalcheckof yourcomplete radio system prior toinstallation is a
must. Thischeckwill locate possible defectivecomponents BEFORE t
hey are
installed inyour model.
•
Gently plug the switch harness and servoconnectors into the proper
receptacles
on the receiver. The connectors are polarized and will fit only one
way. Ifthey
do not plug in easily, turn them around and try agai n. (DO NOT
FORCE
.) Install thebatte ri es I nto the batteryholders f or bo th the transmitter
and receiver.
Unravel the receiver antenna wire and
tum on the transmitter, then tum on the
receiver switch. The servos may move a little bit at this
po i nt but this is normal.
Checkto make
su re thatthe transmitteris on when switched on .and if it is,
continue. If it is
not , recheckyour installation of batteries. You should be ab le
tomove the servos' a
rm s using t he transmitter controls. Notice how the servos
move. Theyshould move the same amount asyou move t
he controls. A ls o,
no tice the direction of rotation of t he servos, then sw itch the servoreversing
switch
es, ifso equipped. See if the rotation of these rv os change. They should
operate in the oppositedirection
as before.
Decide whether yourradio is in prop
er working or der. If you decide that it is
defective, check the warranty proceduresdescribed in the r
ad io instruction
manual. When turning offthe system, always turn the receiver off first, then t he
transmitter. This wi ll prevent the receiver from responding tostray signals
which cancause damage.
NOTICE: Use only radio frequencies specificallyallowed to operate "surface•
models such as RIC cars and b oa ts. In the United Statesthose frequencies fall
within the '75 MHz' or '
27 MH z' bands. Us e of any other frequencies is both
ill ega l and dangerous.
KEY NO.
1
2
s
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
PARTS GUIDE
DESCRIPTION Oty STEP USED IN
Hull
TOfl_
1
Hull Bottom 1
Ha t ch Cover 1
Windshield 1 13
Radio
Co mpartment 1
CompartmentCover 1
Mot
or Stand 1
l!E2_er MotorBracket 1
LowerMotorBracket 1
360 Mo tor 1
Shaft Connector 1
Brass Tube 1
Drive Shaft 1
Brass Drive
Co ll ar 1 3
Prop 1 3
Servo Tray 1
Speed Control 1
Hatch Screw 1
Ha t ch Nut 1
Rudder 1 4
Steerirlg_Bracket 1 4
Rudder Bracket 1
Rudder Bracket Plate 1
Antenna Holder 1
Dri
ver Head 2 12
Velocity StackA 2 12
Veloci ty Stack B 2 12
Veloci ty Stack C 2 12
St eerirlg_ Rod 1 4
Speed Control Rod 1 9
Antenna Tube 1 6
Antennae~
1 6
Decal 1 1
S t an d j~ 1 2
St an d (B) 1 2
Stand (C) 2 2
Double Sided Tape 1 6
Double Sided Tape (long 1 13
RubberBoot 1 4
Ho
ok and Loop 3 7 11
You can pu rchase r eplaceme nt and optiona l parts fo r you r ki t. All of th e parts i de ntifi ed by key n um bers (s ee above for comp l ete li st)
are usua lly no t available sing ularly, bu t we offer th ese parts in c onvenien t parts "packs " wh i ch can be pu r chased sepa r ately. To fi gu re
out wh ich pa rts p ac k yo u need, find th e key n um b er for that part wi th in the ma n ua l. Th en co nsu lt our parts pack gu i de be l ow . When
referring to the pa rt s you need , always use the Parts Pack Numbe r. For ins tan ce , If you need a Decal (Key #33) ask your dealer f or
Kyosho Parts Pac k VP - 09 (Deca l).
Check
NO. PARTS NAME
KEY NO. AND OT Y.
Check
NO. PARTS NAME KEY NO. AND OTY.
EBA Y VP-
01 Propeller 1
5x2
EB AY
LA-41 Hook and Loop 40 x2
EBA Y VP-
02
Prop Shaft Set 1 112 1 314x1
EBAY
1840 Double SidedTape 37x5
EBA Y VP-03 Rudder Set
20 21 22 23x1
EB AY 1898 360ST Motor 10x1
EBAY
VP-04 Accessoriesset 4 18 19
24 31 32 38x1 OPTIONAL PARTS
2526 27 28x2 EBAY
2461 AP 36L Motor
EBAY
VP- 05
Motor Bracket 8 9x1
EBAY
2326 Qu ick Charg_er 15 Minute
EBAY
VP- 06
Saeed Control 17x1
EB AY 1849
Mu lti-Charger If
Ac:lj_ustable Charger
EBAY VP-07 UnkaQe Set 29
30 39x1
EBAY
2246 FET Peak Charger P eak Cha!Q!lr
EB AY VP-08 Servo Mount 6 16x1 .
EB AY . 4400H 1400mAh Flal Pack 6-Ceii7 .2V
EBAY
VP- 09 Decal 33x1
EBAY 2330B 1700mAh Fl at Pack 6·Ceii 7. 2V
EBAY
VP-10 Display Stand 34 35x1 36x2
EBAY
1700mAh SCR 7-Ceii8 .4V
. 4 .

[I) APPLYING THE DECALS
Cut-out th e decals as close to the L ines as po ss ible. Th o box lid and
photo be low can be used for Lhe placement of the decals on the
Viper.
[Ij ASSEMBLY OF BOAT STAND
Assemble the boat stand by sliding the
slots in ( 36 ) Stand C into the slots in
(34) Stan d A and (35) St ond B. Secw·e
A, Band C by placinga few drops of
cyanoacrylateg
lu e on the sl ots .
[Ij PROP INSTALLATION
MJ Z"oP LA STICNUT
© (1)
SH AKE PROOF
~ WASHER
'V (1)
Check that the bra ss tube is glued in . lf not, use o
water proofglue to hold th e tube .
Screw the (14) Bn!SS Drive
Co ll ar onto the drive
s han.
Slide the ( 15) Po· op o nt o the ( 14) Br ass Dri ve
Collar so that the slot in the Prop fits over the
DriveCo
llar .
' Lnstall
the Shake Proof W as h er and the M3.5 plastic Nut
Tighten the M3.5 plastic Nut secure!)'·
- 5 -
NOTE : If the Viperwill be painted
sec
pag e 11 on painting before
appling
the decals.
In a pan of wa rm water
place a few drops of dish
soap.
Peel
th e backingo fT of th e
dccal and dip it in th e water.
Placethe decal on
the Viper.
Th e soap and wnter will
allow the decal to be
positioned. Remove Lhc
excess water from the decal
(
dab do not rub ) and allow
to dry.
[H]
I -
l

•
I
•
(1] RUDDER INSTALLATION
M2.6x 10SITSCREW
~ (1)
1 I"' In stall the {39) Rub b er Boot in the back of the
Hull. The Boot goes to the in si de of the Hull .
Cut ond remove I mm
( 1116 ") rrom the end or
the Boot.
lmm
lnstllllthc (29) Steering Rod so that the
large bend is outside the Hull.
[IjRADIO INSTALLATION
• a!'f' ~
.
Remove the 8 screws that hold the radio trny
coverand remove the cover.
lnstnllthe twoservos as shown at the right . The
sides of the holes in the se.r"o tray may be
trimmed for larger servos.
Secure the sei"'OS with the serews provided with
the radio system.
Screw from
radio system .
I nstall the { 21) Steeri ng Bracket on the (29) Steering RQd. Bend lhe
en d of the rod 90 deg1·ees down. The Stee•·ing Rod sho uld be installed in
the outside hole. Slide the ( 20 ) Rudd er into the ( 22 ) Rudder
Bracket . Install the (2 1) Steeri ng Brack et on the ( 20 ) Rudder .
Secure the Steering Brockel wilh II M2.6 X 10 srrScrew.
0
~
The striped area
~
may be trimmed to
0 fit a
larger servo.
0 1 •
0
(0
- 6 -

L
[I) RECEIVER INSTALLATION
Cl ean the bottom of the receiver and the back of the raruo
compartme nt with alcoho l. Place a piece of (37) Doubl e Sided
Tap e on the bottom of the receiver and attach it to the back of
the radio compartment.
/
Re~iv( Louble Sided Tape
o- 32Antenna Cap
1----31 Antenna Tube
(f) Wrap the
re~iver in a plasticbag to
prevent moisture
from damaging it.
Route the receiver antenna through the (24) Antenna Ho ld er and the
(3 1) Ant e nna Tube . Place the (3 2) Antenna Ca p over the (3 1) Antenna
Tub e. DO NOT cut the excess receiverantenna.
[I] RECEIVER BATTERY INSTALLATION
Cl ean the side of the Receiver Batte1-y and
the bottom rightside
oflhe hull beside the
radio compartment with alcohol. Place a
piece of (40) Hook and Loop material on
the Receiver Battc•-y .
Remove the paper backing from the
ot h er
side of the Hook and Loop a nd install the
Receiver Battery and Hook and Loop to the
bottom rigbt side of the hull next to the raruo
eompm·tment. This will allow the Receiver
Battery to be removed when needed.
-7-
/
-

[I) RUDDER CONTROL
Plug the Receiver Battery
and Servos iniAl the Receiver.
Turn
the radioon and set the
servo trim levers to neutral.
0
0
0
0
Trim lhe servo
arm IAl the shape
and sizeshown.
In sta ll the servo arm
90 degrees IAl the center
line of the servo. The
( 29 ) S teering Rod
should be instal led in
the center hole
NOTE: If more steering is needed
move the (
29 ) stee r ing Rod to
the outside holeon the servo arm.
By extending or
contracting the bend in the
(29)S
tee rin g Rod adjust
the length so that lhe
servo arm and steering
bracket
are parallel.
Install
th e (30) Speed Co nt ro l Ro d in
the hole 9/16 '" from the center of the
servoarm, with the servo arm in lhe
neutral position
as shown at the right.
0
By moving the (3 0)
Spe ed Control
Ro d out one hole
on the servo arm,
\ m o•·e speed cont•·ol
~, , mov7mentcan be
obtained.
'
'
, '
--------------- ~
, ' RIGHTTURN
•, LE FT TURN
' ' ' · - - -
--- -
r· .~,
•
SPEED CONTROL MOVEMENT COMPARED TO STI CK MOVEMENT
..., -'
r
l
HIGH SPEED LOWSPEED NEUTRAL REVERSE LOW SPEED REVERSE HIGH SPEED
- 8 -

j1olRECEIVER SWITCH INSTA.LLATION
ST[ Install the receiver switch in
lhe (6) Compartm ent
Cove~ us ing the screws
provided with
the receiver
switch.
STE 2. Route the receiver antenna
and the receiver battery wire
through
lhe indentat ion in
the radio compartment. re-
in
sta U the compartment
cover using the 8 screws.
· ITIJ BATTERY INSTALLATION
N OTE : The battery
will plug in only one
way.
DO NOT forc e it.
S . Put a strip of (40) H oo k and Loop
ST
al each end of the battery.
.. Remove the paper backing from the
(40) Hook and Loo p an d in sta ll the
battery
at the l eft. sideof the radio
compartmenton the bull bottom.
In stall the battery toward the
front
of the radjocompartment.
thjs will help balance
the boat in
the center.
lftlll£DCH 4iii'Pj(jjf
- 9-

1 12 1DRIVER AND STACK INSTALLATION
M3xaSIT SCREW
•
~ (2)
M3x6SCREW
o- (6)
M3NUT
@ (6)
NOTE: The D1iver
Heads and the
Ve locity
Stacks may be painted
with a b
ru sh-on ena mel
such
as Kyosho"s Polyca
Paint.
'""C . Install the two ( 25) Driv er Heads
with two M3x8 S/ 1' Screws.
STE- 2. Install the sLx (26, 27, 28) Ve locity
Stacks. The (28 )Velocity Stack B
(long)goes to
Lhc rear. Then ( 27 )
Velocity Stack A and (26)Veloci ty
Stack C ( short ) to the front. Usethe
sixM3x6 Screws
and M3 Nuts.
1 13 1WINDSHIELD INSTALLATION
\
•
STE" •. Remove the clear
protectivecovering
from the (4)
Windshield.
Sn':P "'· Install the long stlip of
(38) D ouble Sided
T ape alongthe
indentation in front of
the
dri vcrs.
S, ~? 3. Attach the windshield
to the (3) Hat ch
Cover.
U is very important to put some
styrofoam
in the hull a. nd the
underside
of the hatch cover.
This will all ow the boat to float
should an accidentoccur.
~~~===~ ~
- 10-

l
Most types of paint such as lacquer or
epoxy can be used . The following is an
example using lacquer.
SPRAY LACQUER SPRAY LACQUER
PRIMER COLOR
PLASTIC BODY
PUTTY
MASKI
NG TAPE
THROTTLE
CJ
. .
SA ND PAPEA(120. 240
AND 400 GAIT)
STEERING
FARTHEST
~HOLE
TIGHT
TURN
BATTERYTOO
FAR BACK
N OSEH I G~ ·
s:;: '-
PAINTING THE VIPER
1. Fill any dents with putty and
sand smooth. 4.
Spray several lightcoats of paint lo prevent the
paint from running.
PUTTY
2. Sand using 120 grit then 240 grit.
vo ·ver to avoid ovcr.spray.
5.Cover
the area not lobe painted with masking
tope.
Wet
the surfacewhile lightly sanding .
3. Priming
NEWSPAPER
6. Pin striping and decalscan easilybe applied
after the paint has dried.
<:z -- · · ~ Cover lo avoid
., . ,.~·
~~ ·· -# oversprny.
Spray with two coats of primer and
allow lo dry. Wet sand with 400 grit
sand paper then wash and dry.
ADJUSTMENTS
FAST FORWA RD
SLOW FORWARD
NEUTRAL
NEUTRAL
REVERSE RIGHT
TURN
STEERINGTRIM
MIDDLE
HOLE AVERAGE
TURN
BATTERY IN
MIDDLE
•
WIDE
TURN
BATTERY
TOO FAR
N OSELEV EL ~
s:;;;; ·-
N ~ AA D
For best handling the boat should sit level in the water. If the battery is too
far forward , the boat will not get up on plane and will beslow. If the
battery is too far back the front will bounce up and down, called porpoising.
If the boat turns too sharp it may spin out, and the back of the boat will flip
around.
- 11 -
-
'
...,.