Kyosho EP Caliber M24 User manual

Schweizer300C
SAFETY PRECAUTIONS
Instruction Manual
※Specifications are subject to change without notice.
No.20920
Ni-MH
© 2004 KYOSHO CORPORATION
Index
Read these instructions carefully before starting assembly and flight.
1. Safety Precautions
2. Set Contents
3.Items Required for Assembly, Flight and Maintenance
4.Glossary of Items & Features
5.Preparing for Flight
6.Using the Radio Control System
7.Time for Takeoff
8.Tips for Good Flying
9.Maintenance and Replacement of Parts
10.Adjustments
11.Parts List
12.Exploded View Illustration
13.Spare Parts
14.Optional Parts
*Troubleshooting
1~3
4
4
5
6~10
11
12~15
16
17~24
25~26
27
28~30
31~32
32
33
●This is a high performance model. First time builders should seek advice from experienced
modelers before assembly, or if they do not fully understand any part of the construction.
●Only assemble this model in a place out of children's reach.
●Take sufficient safety precautions. You are responsible for the assembly and safe operation.
●This model is designed for people over 14 years of age. It is not a toy.
This radio control model is not a toy!
*The product you have purchased is powered by a rechargeable battery. The battery is recyclable.
At the end of its useful life, under various national / state and local laws, it may be illegal to
dispose of this battery into the municipal waste stream. Check with your local solid waste officials
for details in your area for recycling options or proper disposal.
EP Caliber M24
Schweizer 300C
THE FINEST RADIO CONTROL MODELS
R

2
Schweizer300C
SAFETY PRECAUTIONS
1
This symbol indicates
possible risk of injury
or death.
Read this before assembly and operation
This symbol indicates
actions you should
stop to avoid damage.
CAUTION
STOP
As the product includes small
and sharp parts, only operate
and store out of reach of
children.
Handle cutters, nippers and
screwdrivers with care as
they can cause injury.
Use goggles for safety.
High speed spinning rotors
are very dangerous if
close to the face.
Do not store in high temperature
or humidity for extended
periods as this may damage
or deform the model.
When not in use or after
use, always switch power
OFF, then disconnect and
remove batteries.
This will stop batteries from
leaking or overheating.
Do not get too close to spinning
rotor as this can result in serious
injury. Always keep a distance of
at least 5 meters.
Only use the specified batteries.
Do not insert batteries in wrong
polarity or modify batteries as
this may cause overheating or
damage.
5m

3
Schweizer300C
1
Keep fingers and hands
away from rotating
gears to avoid injury.
Batteries and motor become
hot during and after flight.
Allow time to cool down
before touching.
Antenna point can
cause injury.
Keep antenna away
from people's faces and
do not wave antenna
around.
Do not operate your
model on the same
band (frequency) as
other models close by.
This will cause loss
of control.
Do not operate model
near traffic, young
children or crowds.
This may cause
accident or injury.
Do not operate in sandy, dusty or wet conditions.
This may cause damage.
Do NOT use non-genuine spare or option parts, and
do not modify the design of the model. This may
cause damage.
To clean body, simply wipe down with a cloth.
Do NOT use water, alcohol or thinner
to wash the body.
Alcohol
Thinner

4
Schweizer300C
SET CONTENTS
2
ITEMS REQUIRED FOR ASSEMBLY, FLIGHT AND MAINTENANCE
3
Body&Fuselage SideCanopy
Decal
Visor
SafetyBarSet
2.6x8mmTP（bind）
Transmitter
Battery
（9.6VNickelMetalHydrideBattery）
O-Ring（large）
O-Ring（small）
Screwdriver（small）
SideCutters
Cutter
AA-SizeBatteries（forTransmitter）
InstantGlue
Do not use damaged batteries or mix battery varieties.
Charger（AC）
Battery Charger Connector
No. 94402 Medium Strength
●Loctite
ScrewLock
Loctite

5
Schweizer300C
GLOSSARYOFITEMS& FEATURES
4
Sendsoutradiosignal.
SwitchespowerOnorOFF.
Adjustsneutralposition
oftheelevator.
Changethecrystaltochange
toadifferentband(frequency).
TransmitterAntenna
Transmitter
Fuselage
PowerSwitch
Body
MainRotor
PowerSwitch
PowerLamp
StartButton
ControlUnit
MainMotor
ReceiverAntenna
StabilizerBlade TailRotor
TailBoom
TailMotor
Brace
ElevatorTrim
Elevator：Forward/Backwards
（NoseDown/Up）
Rudder：NoseLeft/Right
Elevator/RudderStick
Adjustneutralposition
oftherudder.
RudderTrim
Adjuststheneutralposition
ofthethrottle.
ThrottleTrim
Throttle：Ascend/Descend
Aileron：TiltLeft/Right
Throttle/AileronStick
Adjustsneutralpositionof
theaileron.
Aileron Trim
TransmitterCrystal
Plugintoyourpersonalcomputer.
Trainer Jack
Stabilizer Bar
Rotor Head
DisplaysbatterypowerlevelwhenpowerisON.
Battery Charge Indicator
Tail Motor Connector
Main Motor Connector
Upon opening the box, make sure the Stabilizer Bar is not bent
and the Stabilizer Blade angles are aligned. (Refer P.23)

6
Schweizer300C
PREPARING FOR FLIGHT
5
■Charging the Nickel Metal Hydride Battery (Ni-MH)
Charging time is about 10 ~ 12 hours. As this charger does not have an automatic cut off function, do not charge for more than 15 hours.
(Charging for more than 15 hours is dangerous). A fully charged battery will produce about 5 minutes of flight time.
■Assembling the Safety Bar
An Ni-MH battery is subject to wear & tear. Flight times may vary depending on battery charge, battery age and external temperature.
If flight times become very short, change to a new Ni-MH battery.
Connectthe
connector BatteryChargerConnector
Charger
Charger
Battery
ACPowerSocket
1
Assembleasperdiagram.
2.6x8mm
InstantGlueInstantGlue
O-Ring（small）
O-Ring（small）
O-Ring（large）
1Attachasperdiagram. 2
PlugintoACpowersocket
2
・Use the specially designed charger for this model.
・If connectors are dirty, charging may not be possible. Wipe clean with a dry cloth.
・Do not short circuit the charger terminals.
・Operate the charger in normal temperatures (about 23℃) as much as possible.
・Keep away from vibration while charging. Charging may not be possible with poor contact.
・If battery becomes hot while charging, unplug the charger from the power socket.
Safety Bar prevents model from flipping over, but also reduces flight time and motor life.
Remove Safety Bar once familiarity and confidence has been gained with controls.
2.6X8
TP
1
1
PutO-Ringonfirst
Alignthepointof
thescrewwiththe
centerofthemast.
Screw
Mast
2

InstantGlue
7
Schweizer300C
5
■Body Assembly
RemoveBody.
1
AttachBody
Illustrationshows
bodyattached
4
2
Glueonplasticparts
SideCanopy
Visor
RightSide
LeftSide
3
ApplyDecals
Numbershowninsidebracketsisdecalforoppositeside.
InstantGlue
AttachSideCanopy
ifdesired.
InstantGlue
1
2
6 7
4 5
（ ）
12

8
Schweizer300C
■InsertingBatteries
Transmitter
Fuselage
AA-batteriesx8
RemoveBody
1RemoveBatteryCap.
BatteryCap
2
When to Change Batteries
Running out of transmitter battery power results in loss of control
and is very dangerous.
Changebatterieswhenonlyred
indicatorisstillshowing.
Power Level Indicators
PREPARING FOR FLIGHT
5
If batteries are inserted incorrectly or terminals not connected properly,
the indicator lamps will not light up, or only the red indicator lamp will light up.
If this occurs, insert the batteries again.
Insert new batteries, switch the Transmitter power ON, and red
and green indicator lamps light up.
greenred
1
2

9
Schweizer300C
5
■Power ON
1Extend
antenna
4
2 3
Switch transmitter
ON
Turn fuselage switch ON
Power lamp flashes quickly
Wait for the power lamp to flash slowly
(every 2 seconds).
Always switch the Transmitter power ON first!
Lamp flashes slowly
Slow flashing of the power lamp means the safety
mechanism is working.
Movement of the throttle stick will not rotate main
rotor. At this point, check the movement of the
elevator and aileron.
Lamp flashes quickly (every 0.5 sec)
Quick flashing of power lamp means
rudder's neutral position has been detected.
Try not to move the controls unnecessarily.
Insert charged
battery.
3Attach Battery Cap. 4Attach connectors. 5
Battery
Battery Cap Connectors
If power lamp flashes as shown below, battery power is low. Recharge the battery
or insert a new battery.
（Flashes twice）
Move throttle
stick down
1
2
Lamp flashes slowly

10
Schweizer300C
PREPARING FOR FLIGHT
5
■Start
1Move Throttle Stick all the
way to the bottom
2Push Start Button
Throttle
Stick
Start Button
Power Lamp stays lit.
If Throttle Stick is not fully lowered, the safety
mechanism will not disengage, and the lamp
continues to flash. If this happens, move the
Throttle Stick all the way down, and push the
Start Button again.
Attach Body
3
Before pushing Start Button, move
Throttle Stick all the way to the
bottom.
If Throttle Stick is up, main rotor
can rotate unexpectedly.
Once Start Button is pushed, the
rotor responds to Throttle Stick
control. Use caution.
Always turn power OFF on the
fuselage first.
■Checking Elevator and Aileron Movement
Confirm each part responds according to control inputs.
Elevator
Stick
Elevator
Aileron
Stick
Aileron
12

11
Schweizer300C
USING THE RADIO CONTROL SYSTEM
6
●Aileron
right
right
left
left
●Elevator
down
down
up
up
●Rudder
Tilt Right
Nose Down
Nose Up
Nose Turns Left Nose Turns Right
Forward
Backward
MoveRight
Tilt Left
Move Left
right
right
left
left
●Throttle
Before flying, understand how the model will respond to control inputs from transmitter.
Fastermainrotorspeedforascending.
Slowermainrotorspeedfordescending.
Rudderissetupforgradualmovement
high
low
high
low
Also, a high degree of skill is needed in controlling this model.

12
Schweizer300C
7
Keepelbowsdownandextend
theantenna.
1MoveThrottleStickupslowlyandholdatthe
pointwherethemodeljustliftsoff,and
confirmtrackingisinline.
MoveUPslowly.
2
TIME FOR TAKEOFF
Trackingcanslipevenafterbeingshippedfromthe
factory.Alwaysfollowthesestepsinthefollowing
order.
TwoMainRotorscanbeseen
Tracking is Off Line
Normal
IfMainRotorlookslikediagrambelow,refertoP.26
andadjusttracking.Ifthereisnoimprovement,refer
toP.23andcheckSiliconeTubeDamperand
StabilizerBlades.
Mainrotorlookslikeastraightline
viewview
atleast5m
If tracking is off line, flight performance and model's ability to ascend are
affected, and main rotor and tail rotor life can be shortened.
Pre-Flight Checks and Adjustment (every flight)
atleast5m
5m
If unusual noise, smell or smoke is noticed, stop flying and investigate the
cause.

13
Schweizer300C
7
Keepelbowsdownandextend
theantenna.
Focusonthenosewhencontrolling.
1
3
Facethemodelintothewind.
2
Whenlanding,dropthenosedown.
5
MoveThrottleStickslowlyupwardsuntilthemodelrises5˜10cmoffthe
ground.Then,slowlymovetheThrottleStickdownandland.
Practicethisuntilfamiliarandconfident.
MoveslowlyUP
4
5〜10cm
Taking Off
5m
Flight is not possible in more than light breeze.
For Reference
Ifmodelmovesinwrongdirections,
refertoP.14andadjusttrims.
It'spossiblethatadjustingthetrims
willberequiredeachtime,according
tochangesinflightconditions.
wind

14
Schweizer300C
TIMEFORTAKEOFF
7
Graduallyincreaseheight,andland
inforwardpositions.
6Maintainmid-airpositionfora
periodoftimetolearncontrols.
Thisiscalledhovering.
7
Increaseheight
●AileronTrim
right
right
left
●ElevatorTrim
down
up
●RudderTrim
tiltright
iftiltingleft
drop nose
lift nose
pointnoseleft point nose right
tilt left
right
right
left
left
Movesticktocenter,andslidetrimtoadjust.
if nose drops
Movesticktocenter,andslidetrimknobtoadjust.
Movesticktocenter,andslidetrimknobtoadjust.
if nose rises
if nose points right if nose points left
if tilting right
Ifmodelmovesinwrongdirectionsinflight,adjusttrims.Itmaybe
necessarytoadjusttrimsbeforeeachflightaccordingtoflightconditions.
Adjust Trim
left
down
up

15
Schweizer300C
7
Changing Battery
●Abilitytoascendisreduced.
●MainRotorspeeddrops.
●Ruddercontrolbecomesdifficult.
Iftheeitherofthefollowingoccurs,switchthepowerOFFandunplug
theconnectorsintheordershownbelow.
Switching OFF AlwaysswitchpowerOFFonthefuselagefirst,thenswitchtransmitter
powerOFF.
Inadditiontotheabove,ifthepowerlampisflashing
(every0.5sec)whenascending,batterypowerislow.
Stopflying,switchthepowerOFFandunplugthe
connectorsintheorderbelow.
Connector
For Experienced Fliers
Powerlampflashesquickly
(every0.5sec)
1SwitchfuselageOFF 2 3
Disconnect SwitchTransmitterOFF

16
Schweizer300C
8TIPS FOR GOOD FLYING
1Practicemovingforward/backward,
andleft/rightatsameheight.
2
Practicehoveringfromdifferent
standingpositions.
TurninginCircles
3Takecaremodeldoesn'tmovetoofast.
［When Turning Right］
（Toturnleft,useoppositeaileronandruddercontrol)
Tiltthemodelrightbymovingtheaileronstick
totheright.
MoveElevatorStickUPand,
moveRudderStickRight.
Onceturniscomplete,moveElevatorandRudder
backtoneutral,thenmoveAileronSticktotheleft
untilmodellevelsout.
FlyinginFigure8
4MasteringLandingTechnique 5
Takecaremodeldoesn'tmovetoo
fast.
LowPowerHeadwind
HighPower FollowingWind
Heightmaychangeunderdifferent
winddirectionsandspeed,souse
throttlecontroltomaintainheight.
Landintothewind.
［Basic Landing］
DropThrottleStick
gradually.
MoveThrottle
StickUP.
Whenmovingatspeed,moveElevatorUP,
andhoverbeforelanding.
Wind

17
Schweizer300C
MAINTENANCE AND REPLACEMENT OF PARTS
9
Changing Crystals
Ifflighttimesaregettingshorter,batterycapacitymaybe
reduced(memoryeffect).
Refreshthebatteryinthefollowingway.
TransmitterCrystal
Transmitter
Fuselage
ReceiverCrystal
Battery Discharge
Holdskidssomodeldoesn'tliftofftheground.
Spintherotorsuntiltheyalmost
stop(about2˜3minutes). Whenrotorshavealmoststopped,lowerthe
ThrottleStick,andstopthedischarge.
ChargethebatteryasperP.6.
MoveThrottleStickto
neutralposition
Ifabatteryisnotfullydischargedbeforeitisrecharged,thebatterycapacityisreduced.
(memoryeffect)
Tocorrectthiscondition,fulldischargeofthebatteryisneededfromtimetotime.
Undernormalconditions,afulldischargeshouldbeperformedafterevery5recharges.
Ifbatterystillonlydeliverspowerforashorttimewhenfullycharged,thebattery'slifeisover.
Changetoanewbattery.
If rotors have stopped completely, do not leave for long period of time.
This may cause the battery to over-discharge and make it unusable.
If battery is warm, allow to cool down before recharging.
R
e
f
e
r
e
n
c
e
1
2 3
Onebandcannotbeusedbytwopeopleatthesametime.Alwaysuseuniqueband.
TransmitterandReceivercrystalsshouldusethesameband.
(AbletouseFutabaFM72MHzHiBand)
SwitchpowerOFFwhenchangingreceiverortransmittercrystals.

3x5mm（bind）
1.4x3mm（roundhead）
18
Schweizer300C
Changing Motor
MainMotor
TailMotor
Connector
Fuse
Washer
■Changing Main Motor
■Changing Tail Motor
Motorissubjecttowearandtear.Usefollowingreplacementtimeframes
asaguide.
Changeasperillustration.
Connector
Tootight.
Tootight.
Tail Motor Gear
Main Motor Gear
Givegearsonefull
rotation,andadjust
spacesorotation
islightandsmooth.
Washer
PartsReplacementTimeFrames
MainMotor
PinionGear10T about50Flights about50Flights
PartsReplacementTimeFrames
TailMotor
（Earlierchangemaybeneedediftailrotor
hitstheground,orotherflightconditions
causeextrawear).
about15flights
Change motor when model ascends weakly, or makes a strange noise.
Change if rudder control becomes unstable. If flight is continued without
changing, tail control will be lost and the model will spin around.
If main rotor tracking is off line, Tail Motor durability is affected.
Adjust tracking properly when flying.
MAINTENANCE AND REPLACEMENT OF PARTS
9
Givegearsonefull
rotation,andadjust
spacesorotation
islightandsmooth.

19
Schweizer300C
Changing Main Rotor
2mm Washer
Change as per illustration.
Note direction
Note direction
Attach so main Rotor
moves freely front and back
Main Rotor
Main Rotor
Changing Brace
Remove Antenna
Receiver Antenna
Brace
Antenna Cord
2mm Washer
2mm Nylon Nut
2mm Nylon Nut
2 x 5mmTP（truss）2.6 x 8mmTP（bind）
2 x10mm（Cap）
1Attach Antenna 3
Change Brace
2
2mm Washer
9
Back
Front
Change brace if damaged.

20
Schweizer300C
Changing Main Mast
Changeasperillustration
LoosenSetScrews
4
Pulloffindirectionofarrow
5
Donotdisassemble.
HillerControlLever StabilizerBlade
However,ifStabilizerBarisbentordamaged,
refertoP.23andreplaceaccordingly.
3x3mm（SetScrew）
Removescrews
1PullPinout
2x18mmPin
2
RemoveRotor
3
2x5mmTP（truss）
MAINTENANCE AND REPLACEMENT OF PARTS
9