JR Racing XR3 User manual

3Channel,3ModelMemory
FMComputerRacingSystem
-'BRACING
r

TableofContents
IntroductiontotheXR-3
RadioSystem
ThankyouforpurchasingtheXR-3three-channelradio
system.ThissystemhasbeendesignedtoprovideR/C
racerswithahighquality,userfriendlyradiosystemthatcan
berelieduponyearafteryear,raceafterrace.Inaddition,the
XR-3'sgripdialaccessiblethirdchannelisidealforuseasa
mixturechannelingasboats,orasatransmissionshifterfor
specificTamiya"-equippedR/Ctrucks.It'simportantthatyou
carefullyreadthismanualbeforeattemptingtooperateyour
XR-3system.Foryourconvenience,ablankdatasheethas
2
beenincludedinthebackofthismanual.Onceyouhave
inputallthenecessarydataforaparticularmodelintoyour
transmitter,westronglyrecommendthatyouimmediately
writethatinformationdownonthedatasheetprovided.This
insuresthat,intherarecaseofamemoryfailure,youwill not
loseyourmodels'set-updata.
Forthosewhowouldliketogetouttothetrackquicklywith
justthebasicradioset-up,pleaserefertotheQuickStart
sectionthatfollows.
Introduction to Lithium Battery 10
the XR-3 Radio System 2Memory Backup Screen 10
XR-3 Quick Start Setup 3Accessing the System Mode 11
Direct Trim Access 4Model Name Entry 12
Servo Trim Adjustment 4Data Reset 13
System Features 5Channel 3 Function Select 14/15
Transmitter Features 5Accessing the Function Mode 16
Receiver Features 5Model Select 17
Servo Features 5 Travel Adjust 18/19
System Specifications 5Steering Rate 20
System Components 5Sub-Trim 21
Transmitter Specifications 5Servo Reversing 22
Receiver Specifications 5Accessing the Direct
Servo Specifications 5Trim Mode 23
Control Identification Steering Trim 24
and Location 6 Throttle Trim 24
RlC Safety Precautions 7Grip Lever B: Steering Dual
Steering Tension Adjustment 7Rate Trim Adjustment STG 25
Charging Jack 7Grip Lever A: Brake Endpoint
Receiver/Servo Connections Adjustment BRG /Channel 3
and Installation 8Access Brake Endpoint
Operating Your Model 9Adjustment 26
Channel 3 Access 27
Servo Layout 9XR-3 Data Sheets 28/29
Key Input and Display 9Frequency Chart 30
Display Screens 10
Normal Display Screen 10 Warranty and 31
Service Information
Low Battery Screen 10

.I
I
XR-3QuickStartSetup
Includedinthismanualarein-depthinstructionsdetailing
allthestepsandproceduresneededtocorrectlyprogram
eachoftheXR-3'sfeatures.Forthoseracerswhowanttoget
tothetrackfast,wehaveprovidedtheQuickStartsection
below.QuickStartcoversthebasicprogramminginforma-
tionnecessarytogetyoutothetrackfast.
Later,whenyouwanttolearnmoreaboutthespecific
featuresoftheXR-3,refertotheappropriatepage(s)inthis
manualformoredetailedprogramminginformation.
Note:IfbrakingadjustmentviaGripDialAisrequired.refer
tothethirdchannelsystemsetupmode(Page14)for'
instructions.
ServoReversing
ST Indicates current channel
ST=Steering
TH=Throttle
FN3 = Channel 3
(optional)
Indicatescurrent
servodirection
REV'NORM
-
ENTER
6 6
MODE CHANNEL
.;
1. Withthetransmitterpowerswitchon,presstheMODE
keytoentertheFunctionMode.
,
c::>
MODE
2. Pressthe MODEkeyfour times until STappearson the
screen.TheST indicatesthesteeringservo reversing
screen. + CLEAR -
6 6
INCREASE DECREASE
3. PresstheINCREASEorDECREASEkeytomovethecur-
sortothedesiredservodirection(Rev.Norm).
,,
c::>
CHANNEL
4. PresstheCHANNELkeyoncetoaccessthethrottleservo
reversingscreen.
5. Toselectthedirectionofthethrottleservo,repeatStep3
above.
6. RepeatSteps2and3toadjustchannel3ifneeded.
TravelAdjustment
srp Indicatescurrentadjustment
position
STR=Steeringright
STL =Steeringleft
FWD=Forwardtrigger
BRM=Reverse(brake)trigger
F3+ =Thirdchannel(optional)
(Refertopage14for
thirdchanneloperation)
Indicatescurrentvalue
TRVAOJ. Inn
, L'L'
,
c::>
MODE
1. FromtheServoReversefunction,presstheMODEkey
twicetoaccesstheTravelAdjustmentfunction(theSTR
orSTLscreenwillappear).
SteeringAdjustment:
2. Rotatethesteeringwheelin the desireddirection (left or
right)tobeadjusted. + CLEAR-
6 6
INCREASEDECREASE
3. PresstheINCREASEorDECREASEkeystoselectthe
desiredtravelvalue.
ThrottleAdjustment:,
c::>
CHANNEL
4. PresstheCHANNELkeyonce.FWDwillappearonthe
screen. + CLEAR-
,,
c::> c::> .
INCREASE DECREASE
5. PresstheINCREASEorDECREASEkeystoselectthe
desiredtravelvalue.
Channel3 Adjustment:
Ifthirdchannelisnotrequired,proceedtoStep8.
r6
CHANNEL
6. PresstheCHANNELkeyonce.F3+will appearonthe
screen. + CLEAR-
6 6
INCREASE DECREASE
7.PresstheINCREASEorDECREASEkeystoselectthe
desiredtravelvalue. ENTER
6 6
MODE CHANNEL
8. PresstheMODEandCHANNELkeysatthesametimeto
exitthefunctionmode.
3

DirectTrimAccess
ServoTrimAdjustment
I 1
STT
n
L'
T~.Ir
n
L'
rid,
,-,\,=.
n
L' Steeringtrim
4
Indicatessteering
trimfunction
Indicatescurrent
value
Indicatesthrottle
trimfunction
Indicatescurrent
value
Indicateschannel3
function
Indicatescurrent
value
Throttletrim
SteeringServoTrimAdjustment:
1.Withthetransmitterpowerswitchon,movethedigital
steeringtrimleverinthedesiredpositiontobeadjusted.
Thesteeringtrimvaluescreenwillappearautomatically.
ThrottleServoTrimAdjustment:
2. Withthetransmitterpowerswitchon,movethedigital
throttletrimleverinthedesiredpositiontobeadjusted.
Thethrottletrimvaluescreenwillappearautomatically.
Channel3 ServoTrimAdjustment
(If Activated):
3. Withthetransmitterpowerswitchon,movethedigital
GripLeverAinthedesiredpositiontobeadjusted.The
channel3valuescreenwill appearautomatically.
DiagramA
Decrease Increase

SystemFeatures
TransmitterFeatures
·ThreeChannels
·FMmodulation
·Easy-to-readLCDgraphicsdisplay
·Threemodelmemory
·Three-charactermodelnameentry
·Electronicdigitaltrimleversforthrottleandsteering
·Twoassignableelectronicgriplevers
." ThirdchannelaccessiblethroughGripDialA
·Directdisplaytrimfunction
·Servoreversing
·Sub-trim
·Steeringdualrate
·Steeringendpointadjustment
(twopoints-left andright)
·Brake/throttleendpointadjustment
·Lowbatteryalarm
·Plug-incrystals
·Chargejackreceptacle(rechargeablebatteries
notincluded;orderJRPB958)
R-133ReceiverFeatures
· ThreeChannels
· FMmodulation
· 27MHz/75MHzavailable
·Batteryeliminatorcircuitry(BEC)
·PatentedABe&Winterferencetechnology
Z250ServoFeatures
· Lowcurrentdrain
· Indirectdrivefeedbackpotentiometerforadditional
vibrationprotection
·SurfaceMountTechnology(SMT)
·Durablenylongeartrainforlonglife
SystemSpecifications
SystemComponents
Systemname
Transmitter
Receiver
Servos
Accessories
XR-3
NETXR-3
R-133
Z250x 2(1ifequippedwith
ESespeedcontrol)
B.E.C.switchharnesswithbat-
terycase,servoaccessories(for
twoservos),instructionmanual
XR-3TransmitterSpecifications
Model number
Encoder
RFoutput
Modulation
Outputpower
Currentdrain
Powersource
Outputpulse
XR-3
3-channelcomputersystem
27/75MHz
FMmodulation
195.0Mw
150mA
1.5Vx 8drycell
(1.2Vx 8NiCad
600mAhoptional)
1000-2000(1500neutral)
R-133ReceiverSpecifications
ModelNumber
Type
Frequency
Sensitivity
(microseconds)
Selectivity
Weight(oz)
Size(in)(WxLxH)
Receiverantenna
PowerSupply
NER-133
3-channel/FM
ABC&Wcircuitry
27/75MHz
5qsminimum
8KHz/50dB
.88oz
1.26x 1.76x .87
14.75"
4.8-6.0VD/e
Z250ServoSpecifications
Torque(oz/in)
Speed.
Weight(oz)
Size(in)(WxLxH)
Motor
40.3oz/in
.25sec/60°
1.47oz
0.73x 1.52x 1.32
3-poleferritetype
5

ControlIdentificationandLocation
Three-character
nameinput
Digitalvoltage
reading
Steering wheel
Chargejack
Modebutton
>=Enterfunction
Channelbutton
Decreasebutton
>=Clearfunction
Increase button
Electronicdigital
GripLeverA/access
tothirdchannel
Electronicdigital
~throttletrimlever
Throttletrigger
Battery cover *
(8 AA batteries required)
*T0 remove, press down where it says "press" and push the cover in the direction of the arrow.
Removethe battery caseand install eight AA batteries in the direction shown as molded into the
battery case. If transmitter voltage fails to register, check for correct battery installation and voltage.
6

RlCSafetyPrecautions
ForsafeandreliableperformanceofyourR/Cmodel,please
carefullyreadandfollowtheseguidelines:
1. Radiocontrolmodelsarenottoys.Theyarecapableof
inflictingseriousinjurytopeopleandproperty.Usecau-
tionatalltimeswhenoperatingyourmodel.
2. YouareresponsibleforthesafeoperationofyourR/C
model.Youmustproperlyinstall,testandoperateyour
modelwithaclearsenseofthatresponsibility.Donot
takerisksthatmightendangeryourselforothers.
3. RunninganR/Ccarinthestreetsisverydangerousto
bothdriversandmodels.Avoidrunningyourmodelin
areasoccupiedbyfull sizeautomobiles.Tolocateareas
whereyoucansafelyoperateyourmodel,youshould
contactyourlocalhobbyshopforR/Ctracksorclubsin
yourarea.
4. WhenrunninganR/Cboat,keepit awayfromanyswim-
mers,fullsizeboats,orwildlife.Also,watchcarefullyfor
fishinglinesthatcangettangledinthepropeller.
5. Beforeoperatingyourmodel,makesureyourfrequencyis
clear.Ifsomeoneelseisoperatingonthesamefrequency,
bothmodelswill gooutofcontrol,possiblycausingdam-
agetothemodels,aswellasothers.
6. IfatanytimewhileoperatingyourR/Cmodelyousense
abnormalmodelfunctioning,endyouroperationimmedi-
ately.Donotoperateyourmodelagainuntilyouarecer-
taintheproblemhasbeencorrected.
CAUTION:Controlofyourmodelisimpossiblewithoutsuffi-
cientvoltageforthetransmitterandreceiver.Aweaktransmit-
terbatterywilldecreaseyourrangeofoperationandaweak
receiverbatterywillslowservomovementanddecreaseyour
rangeofoperation.Checkyourreceiverpackvoltageoftento
avoidlosingcontrolofyourmodel.Whenusingamodelthat
operatesboththeelectricmotorandthereceiverfromthe
samebattery(BatteryEliminatingCircuitry,orB.E.C.),you
shoulddiscontinueusewhenthetopspeedsharplydecreases
oryou'llquicklylosecontrolofyourmodel.
SteeringTension
Adjustment
Steeringtensionisadjustableviatherecessedscrewlocated
beneaththesteeringwheel(seepage6forexactlocation).
Turningthescrewclockwiseincreasesthesteeringtension.
ChargingJack
Locatedontheright-handsideofthetransmitteristhe
chargingjack,whichacceptsonlyJRwallchargers.Please
donotattempttouseanyotherbrandofwallchargerasit
maybereversepOlarityandcancausedamagetoyoursys-
tem.OnlyusetheJRwallchargerwhentheXR-3isequipped
withNi-Cadbatteries(availableseparately,JRPB958).
JRTRANSMITTERCHARGEJACKPOlARITY: e ~
ChargerPigtailForTransmitter
BlackToPositive
~7Red To Negative
7

Receiver/ServoConnections
andInstallation
YourR-133ReceiverisequippedwithBatteryEliminator
Circuitry(B.E.C.).Thereceivergetsitspowerfromthe
model'sNi-Cadbatterypack,thussavingtheweightofan
additionalreceiverbattery.Ni-Cadbatteriesfrom4.8-8.4V
(4-7 cells)canbeusedsafely.Highervoltagepacksmay
damagethereceiverandservos.
Note:WhenusingaseparatereceiverNi-Cadasapower
source,theoperatingvoltagerangeis4.8-6.0V
(4-5 cell)
Attention:Makesurethemaleandfemaleconnectorshave
thecorrectpOlarity(+/-) beforeconnecting.Theservolead
andreceivercasearemoldedsothattheleadcanonlybe
insertedcorrectly.Besuretoorienttheservoplugcorrectly
forproperinsertion.
7.2V-8.4VBattery
Thirdchannel
(Optional)
Youmayuseaseparatereceiverbatterytopowerthereceiver
(suchasforsomeelectricboatsoringas-poweredvehicles).
ANi-CadpackpluggedintotheBATTsocketonyourreceiv-
erwill operateyourreceiver.Youcanalsousealkalinebat-
terieswiththeiricludedbatterybox.
Ifyouuseamechanicalspeedcontroller,pleasemake
sureithasthecorrectconnectorforaB.E.C.system(red
connector).SeeFigureAbelowforatypicalsetup.
MostelectronicspeedcontrollersaresetupforB.E.C.
operationandplugdirectlyintoyourreceiver(Function2).
SeeFigureBforatypicalset-upandcheckyourspeed
controller'smanualforcorrectinstallation.
Mechanical
SpeedControl
ToMotor
J~
Z250Servo
FigureA- ConnectionstoB.E.C.receiverwithmechanicalspeed
controller.Ni-Cadbatteryandspeedcontrollerarenotincludedinthe
radioset.
ToMotor
E.S.C.
7.2-8.4VBattery
R-133 Receiver
8
Figure B- ConnectionstoB.E.C.receiverwith
electronicspeedcontroller.Ni-Cadbatteryand
speedcontrollerarenotincludedintheradioset.

OperatingYourModel
It'simportantto learnthepropersequenceforswitching
on/offyourradiosystem:
BEFOREOPERATION:Switchonthetransmitter,thenthe
receiver.
ServoLayout
Note:Rubbergrommets
and(sometimes)
eyeletsareusedin
fuel-powered
vehicles.
Servo Mounting FlangeJ
RubberGrommetsl-
~--~
t
ServoEyelet-0
Servo Mounting Flangel
Rubber Grommets --,
aI-:J1aJ-:J
TopView
KeyInputandDisplay
KEY
AFTEROPERATION:Switchoffthereceiver,thenthe
transmitter.
Thisensuresthatyouwillalwayshaveasignaltothereceiver,
andyourR/Cmodelwill notoperateoutofcontrolwhenyou
turnoffthetransmitter.
ServoArm/Horn
Servo OutputShaft
ServoCase
:III
I
Z250Servo
Servo Leadw/Connector
MODE
USE
Used to move up through the available functions
Used to select the desired channel
CHANNEL
Used to increase the value of the selected functionINCREASE
Used 10decrease the value of the selected function
DECREASE
To enter the System Mode press the MODE
and CHANNEL keys simultaneously and
hold while turning on the transmitter.
ENTER
6 6
MODE CHANNEL
I I
To enter the Function Mode press the MODE
keywhile the transmitter ison.
+CLEAR-
6 6
INCREASE DECREASE
I I
Press the INCREASEand DECREASEkeys
simultaneously to clear the screen or return
to factory preset.
9

DisplayScreens
NormalDisplayScreen
Whenthe powerswitch is turned on, the LCDscreenwill
readasshown below.This screenis referredto as the
Normal Display.
Note:Ifanyoftheelectronictrimbuttonsaremoved
whileinthisscreen,thescreenwillautomatically
changeto displaythetrim in use.This is called
the DirectTrim Mode. For moreinformation on
thefeature,pleaseseepage23 of this manual.
r'/] I
In ='
,Lf.L V
low BatteryScreen/lithiumBattery
Backup
WhenthevoltageoftheeightAAbatteriesdropsbelow9.0
volts,theXR-3'sdisplayscreenwillalternatebetweenthe
Normal(seeabove)andLowBatteryscreen(BATT),anda
continuousbeepingwill occur,indicatingthatthebatteries
needtobereplacedbeforefurtheruse.TheLowBattery
screenisactiveduringanyofthethreeoperatingmodes.
]1=lT
nn
O.JV
10
lithiumBattery
YourXR-3radiosystemisequippedwithafiveyearlithium
batterybackupsystem.Thissystemisdesignedtoprotect
andretainall radioprogrammingintheeventthatthetrans-
mitterbatteriesdropbelowtherequired9.0volts,orthe
transmitterbatterycaseisremovedduringbatterychanges.If
afterfiveyearsit becomesnecessarytoreplacethelithium
battery,returnyoursystemtotheHorizonServiceCenterfor
repair(seeaddress,page31).
MemoryBackupScreen
IftheMemoryBackupscreenappears,thisindicatesthatany
programmingchangesmadesincethelasttimethesystem
wasturnedonmustbesavedbypressingtheMODEand
CHANNELbuttonsatthesametime.Ifyoudonotsave,the
recentprogrammingchangeswill belost.Ifthisscreen
appearsforasecondtime,itissuggestedthattheXR-3
transmitterbereturnedtotheHorizonServiceCenterfor
servicing(seeWarrantyInformation,page31).
]FI f(
en
L'~

AccessingtheSystemMode
ToentertheSystemMode,pressboththeMODEand
CHANNELkeysatthesametimewhileturningonthetrans-
mitterpowerswitch.BypressingtheMODEkey,youcan
nowselectthemodelnameinput,dataresetfunctionor
channel3functionasshownhereontheSystemModeflow
chart.Informationforeachfunctionislocatedonthepage
numberlistednexttothefunctionnameontheflowchart.
ToexittheSystemMode,presstheMODEandCHANNEL
keysatthesametime,orsimplyturnoffthetransmitter.
..
'\I' JJ
'I" ,
,
,
,-, .,
L Lr\
,
,
.r'\"
,-",J
,,\,
L",
Model Name Entry,
page12
DataReset,page 13
Channel 3 Function,
pages14-15
11

-
ModelNameEntry
(SystemMode)
TheXR-3allowsathree-characternametobeinputforeach
ofthethree(3)modelsavailable.Thecurrentmodel,with
name,will thenbedisplayedintheNormaldisplayscreen.
Thisfeatureisusefultohelpidentifydifferentmodels,
setups,etc.Forinformationonselectingmodels1,2or3,
pleaserefertotheModelSelectFunction(page17).
12
Flashingcharacter
indicatesthecharacter
tobeadjusted
Currentmodel
number
AccessingtheModelName
EntryFunction
ToaccesstheModelNameEntryfunction,followthesteps
below:
Pressandholdthe PresstheCHANNEL
MOOE and CHANNEL /key to select the
keysatthesamelime character10be
toentertheSystem \'ENTER , changed
Mode c:::> c:::>
MODE CHANNEL
Press the increase or
decrease keysto select
thecorrectletler/~
numbertobeused "'" c:5"--- 6
INCREASE DECREASE
1. Pressthe MODEandCHANNELkeysatthesametime and
hold.
2. Turn on thetransmitterpowerswitch to entertheSystem
Mode.
3. MD1shouldnowbepresentonthescreen.
4. PresstheINCREASEorDECREASEkeystoselectthe
correctletter/numberforthefirstcharacter(flashing).
5. Tochangetheremainingtwocharacters,pressthe
CHANNELkeyuntilthedesiredcharactertobechanged
isflashing.
6. ToaccesstheDataResetfunction,presstheMODEkey.
ToexittheSystemMode,eitherturnthetransmitterpower
switchofforpresstheMODEandCHANNELkeysatthe
sametime.

DataReset(SystemMode)
TheDataResetfunctionallowsyoutoresetalltheprogram-
mingintheselectedmodel(1.2or3)tothefactorydefault
settings.BeforeusingtheDataResetfunction,it'simportant
toentertheModelSelectfunctionandchecktomakesure
thecurrentmodelnumberindicated(1,2or3)isthemodel
towhichyouwanttoresettothefactorydefaultsettings.The
ModelSelectfunctionisdescribedinonpage17.
.-, n
L Lr\
,
,Indicatesmodelto
bereset
AccessingtheDataResetFunction
To accessthe DataResetfunction, follow the stepsbelow:
PresstheMODEkeyto
accesstheModel
NameEntryfunction ENTER
~r ,
c::::::> c::::::>
MODE CHANNEL
+ CLEAR -
66
INCREASE DECREASE
~
Press the INCREASEand DECREASEkeys at
the same time to reset (clear) all settings for the
selected model to the factory default settings
1. Pressthe MODEand CHANNELkeysatthesametime and
hold.
2. Turn on thetransmitter powerswitch to enterthe System
Mode.
3. Pressthe MODEkeyonceuntil CLRappearson the
screen.
4. Pressthe INCREASEandDECREASEkeysatthesame
timetoresetthedata.Toconfirmthattheselectedmodel's
programminghasbeenreset,abeepwill soundandthe
modelnumberselected(1,2or3)will stopflashing.
5.ToexittheSystemMode,eitherturnthetransmitterpower
switchofforpresstheMODEandCHANNELkeysatthe
sametime.
.
13

Channel3 FunctionSelect
(SystemMode)
TheChannel3functionoftheXR-3allowsyoutoselectfrom
2differenttypesofChannel3servotravelmovements,orto
inhibittheChannel3functionsothattheGripDialAcanbe
usedtooperatethebrakeendpointadjustmentfeature.Use
theinformationbelowtoselectthecorrectChannel3func-
tiontypeforyourparticularinstallation.Itissuggestedthe
ofunctionbeselectedformostapplications.
(factorypreset)
LN =TheLN,orlinear,servotravelfunctionisdesignedtobe
usedwhenanenginefuelmixtureservoisrequired.Thisfunc-
tionismostcommonlyusedwithgaspoweredR/Cracing
boats.Asmentionedpreviously,thisfunctionisaccessible
throughtheGripDialA.Inthisfunction,themaximumtravelof
theservoisdeterminedbythetraveladjustfunction,page18.
Theservoneutralpositioncanbealteredproportionatelyvia
theGripDialAforfuelmixtureadjustment.Whenactivated,
fuelmixturetrimvaluesarevisibleforthedirecttrimfunction,
page23. r'\'~
,-",~
,,\,
L",
Indicates Channel 3
function
Indicateslinear
Channel3 movement
(fuelmixtureservo)
3P =The3P,or3position,servotravelfunctionisdesigned
tobeusedasatransmissiongearshiftchannel.Thisfeature
isdesignedforuseQD.)ywithTamiya@vehiclesequippedwith
14
thisfeature.Asmentionedpreviously,thisfunctionisacces-
siblethroughtheGripDialA.Inthisfunction,theservo's
travelcanbeselectedtoonlythreepositions:left,centerand
right.Theleftandrighttravelvaluesaredeterminedbythe
traveladjustfunction,page18.Thecenterpositioncanbe
adjustedviathesub-trimfunction,page21.
IndicatesChannel3
function
Indicatesnon-linear
three-position
Channel 3 movement
(Tamiya shiftable
transmission use)
D=The0,orinhibit,functionisdesignedtobeusedwhen
thebrakeendpointadjustmentfunction,page26,isrequired.
Thisfunctionisdesignedtobeusedwithmosttypesofelec-
tricandgas-poweredR/Ccars.Thisfeatureisextremelypop-
ular,asitallowstheamountofbrakingaccessiblethroughthe
throttletrigger'sforwardpositiontobeadjustedduringopera-
tionformaximumeffectiveness.Whenactivated,thebraking
valveswillbevisibleviathedirecttrimfunction,page23.
r'\'~
,- '"~~
n
LI
Indicates Channel 3
function
IndicatesthatChannel3
is inhibited(GripDialA
brakingfunctionisnow
activated)
1

AccessingtheChannel3 Function
ToaccesstheChannel3function,followthestepsbelow:
Pressandholdthe
MODEandCHANNEL
keysatthesametime
toentertheSystem ENTER' ,
Mode.Next,pressthe <:::::) <:::::)
MODEkeytwiceuntil MODE CHANNEL
FN3appears
Press the INCREASE
or DECREASEkeys to
select the Channel 3
functiontypetobe~
used "'-..~
INCREASEDECREASE
LN= Linear servo movement
3P= 3 position servo movement
0= Inhibited (grip dial A braking is now active)
1. PresstheMODEandCHANNELkeysatthesametimeand
hold.
2. TurnonthetransmitterpowerswitchtoentertheSystem
Mode.
3. MD1shouldnowbepresentonthescreen.Pressthe
MODEkeytwiceuntilFN3appearsonthescreen.
4. PresstheINCREASEorDECREASEkeystoselectthe
correctChannel3functiontypetobeused.
5. Toaccessthemodelselectfunction,presstheMODEkey.
ToexittheSystemMode,eitherturnthetransmitterpower
switchofforpresstheMODEandCHANNELkeysatthe
sametime.
...
15

AccessingtheChannel3Function
ToaccesstheChannel3function,followthestepsbelow:
Pressandholdthe
MODEandCHANNEL
keysatthesametime
toentertheSystem ENTER
___ I ,
Mode.Next,pressthe c::::J c::::J
MODEkeytwiceuntil MODE CHANNEL
FN3appears
Press the INCREASE
or DECREASEkeys to
select the Channel 3
functiontypetobe~
used "'-- ~-2::J
INCREASE DECREASE
LN= Linear servo movement
3P= 3 position servo movement
0= Inhibited (grip dial A braking is now active)
1. PresstheMODEandCHANNELkeysatthesametimeand
hold.
2.TurnonthetransmitterpowerswitchtoentertheSystem
Mode.
3. MD1shouldnowbepresentonthescreen.Pressthe
MODEkeytwiceuntilFN3appearsonthescreen.
4. PresstheINCREASEorDECREASEkeystoselectthe
correctChannel3functiontypetobeused.
5. Toaccessthemodelselectfunction,presstheMODEkey.
ToexittheSystemMode,eitherturnthetransmitterpower
switchofforpresstheMODEandCHANNELkeysatthe
sametime.
15
I
-....

Accessingthe
FunctionMode
Toenterthefunctionmode,it'snecessarytofirstturnonthe
transmitter'spowerswitch.Next,presstheMODEkeyuntila
beepisheard.Thedisplaywillchangetoshowthefirstfunc-
tionlistedontheFunctionModeflowchartasshownbelow.
PresstheMODEkeytoscrolldownthroughthefunctions
onebyone,asshownintheflowchart.Oncethedesired
functionhasbeenreached,usethechannelkeytoselectthe
appropriatechannel(ifapplicable).Toadjustthevaluesofthe
function,simplypresstheINCREASE(+)orDECREASE(-)
keysuntilthedesiredvalueisdisplayedonthescreen.
ModeKey ChannelKey
tll] I
I
,
Model Select, page 17
TRVADJ. STR
Inn
'LILI
Channel
key
TRVADJ. FUJ]
Inn
,ULI
Channel
key
TRVADJ F3+ TravelAdjust,
page
18
,nn
, LILI
01 RSTtll
,nn%
, LI LI
Steering Rate,page 20
ST Channel
key T~.I f.tJ3
REV. NORM REV.NORM REV. NORM
Servo
Reversing,
page22
---
16
1
SB-TRM ST I
SB.TRM T.I SB-TRM f-t,I3
Channel Channel
ISub-Trim,
nInkey npage21
LI LI .LI

ModelSelect
(FunctionMode)
TheXR-3hasmemoryforthree(3)models.Thisfeature
allowsforthreedifferentmodelstobeoperatedwiththe
sametransmitter(additionalreceiversandservosmustbe
purchasedseparately),oronemodelwiththree(3)different
racesetups.
'\If ],
" 'L IndicatesModel
Selectfuction
,
fIndicatescurrent
modelnumber
AccessingtheModelSelectFunction
ToaccesstheModelSelectfunction,followthestepsbelow:
Press the MODE key
until MOL appears on
thescreen ~IENTER,
~ ~
~NEL
+ CLEAR -
6 6
INCREASE DECREASE
Press the INCREASEand DECREASEkeys to
select the desired model to be used (1, 2, or 3)
1. Turnthetransmitterpowerswitchon.
2. Pressthe MODEkeyto accessthe Function Mode.
3. Pressthe MODEkeyuntil MDL appearson thescreen.
4. PresstheINCREASEorDECREASEkeystoselectthe
desiredmodelnumber(1,2,or3).
5. PresstheMODEkeytoaccesstheTravelAdjustfunction.
6. ToexittheFunctionMode,eitherturnoffthetransmitter
powerswitchorpresstheMODEandCHANNELkeysat
thesametime.
17

TravelAdjust
(FunctionMode)
TheTravelAdjustfeatureoftheXR-3allowsthemaximum
travelofboththesteering,throttleandChannel3(optional)
servostobeincreasedordecreasedineachdirectionto
achievetheexactservomovementneeded.Theadjustment
rangeisfrom0%to125%.Thetraveladjustmentisfactory
setto100%forbothchannels.Thetraveladjustmentvalue
displayedonthescreendependsonthecurrentpositionof
thesteeringwheel,trigger,ortrimlevertobeadjusted.This
featureisveryusefuleithertomaximizeservotravelorto
18
reduceservoover-traveltoeliminateservobinding(servo
movesfurtherthancontrolmechanismallows),withoutthe
needformechanicallinkageadjustment.
Thescreensbelowareaccessedbyturningthewheeltothe
desireddirectiontobeadjusted(leftorright),bymovingthe
triggertotheforwardorbackward(brake)position,orby
movingtheGripLeverAtotheforwardorbackpositions.
1
';TLl Indicatessteeringleft Channel3 Screens
TRVADJ traveladjustment (Optional)
Inn t-- Indicatescurrent,LI LI value FunctionsIN &3P IndicateslefVrighttravel
F3+ adjustment (function LN), or
ITRVADJ
forwardtraveladjustment
STPI Indicatessteering (function3P)accessible
TRVADJ. righttraveladjustment Inn throughGripDialA
Indicatescurrent
Inn Indicatescurrent I,LI LI value
,LI LI value
JFunctions3Ponly Indicatesrearwardtravel
f- UJ]Indicates forward
ITRVADJ. -1- adjustment(function3P)
TRVADJ throttletravel f- 3- accessiblethroughGripDialA
_adjustment
I,Ini- Indicatescurrent IInn ,LI LI value 'LILd Indicatescurrent
value

AccessingTheTravelAdjust
Function
To accesstheTravelAdjust feature,follow the step below:
PresstheMODEkey PresstheCHANNEL
untilTRVADJappears keytoselectthe
onthescreen /channeltobeadjusted
~, ENTER, (steeringorthrottle)
~ ~
MODE CHANNEL
+ CLEAR -
6 6
INCREASE DECREASE
~
Move the wheel/trigger or Grip LeverA in the desired direction and press
either the INCREASEor DECREASEkeys to achieve the desired travel value
1. Turn on thetransmitterpowerswitch
2 Pressthe MODEkeyto entertheFunction Mode.
3. Pressthe MODEkeyuntil TRVADJappearsin small
letterson the leftside of thescreen.
4. PresstheCHANNELkeytoselectthedesiredchannelto
beadjusted.Steering=STR(steeringright)orSTL(steer-
ingleft);Throttle= FWD(forward)orSRM(brakingor
reverse);Channel3(optional)=F3+orF3-(function3P
only)
5. Movethesteeringwheel,triggerorGripLeverAinthe
desireddirectionforadjustment(left/right,
forward/reverseorbrake).PresstheINCREASEor
DECREASEkeytoachievethedesiredamountoftravel.
Movethewheel,triggerorGripLeverAintheopposite
directiontoadjustthetravelintheoppositedirection.
Note:ForChannel3function,ifLNisselected,only
F3+isadjustable.
6. PresstheMODEkeytoaccesstheSteeringDualRate
function.
7. ToexittheFunctionMode,eitherturnoffthetransmitter
powerswitchorpresstheMODEandCHANNELkeysat
thesametime.
Note:Whensettingthetraveladjustvaluesforthe
steeringfunction,it'ssuggestedthatifpossible
themaximumtravelvaluesbesettoanequal
valueinbothdirectionstomaintainproper
steeringcontrol.
19