Hobby People Vertex User manual

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Kit Product # 143401

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TABLE OF CONTENTS
l Lightweight,AluminumCenterDriveShaft
l 3mmAluminumHingePinRetainers
l AdjustableMotorMountforDifferentGearingOptions
l 12mmHexAdaptersAllowsUseofAfter-MarketWheels
l 2.2"WheelsAllowsUseofAfter-MarketTires
l AdjustableToe-in,Front
l AdjustableCamber,FrontandRear
l AdjustableBumpSteer,ShockMountingPositionsandDroop
l AdjustableDifferentialswiththeUseofDifferentialGrease
l AggressiveOff-RoadTiresMountedon5SpokeWheels
l OptionalPartsAvailableforIncreasedPerformanceandDurability
l Weight(withIncludedBattery)...................................................................................................................................... 2.15kg(4.75lbs)
l Length........................................................................................................................................................................... 405mm(15.95")
l WidthFr/Rr............................................................................................................................ Fr:325mm(12.8")/Rr:330mm(12.99")
l Height(MeasuredtotheTopoftheBodywithSettledSuspension)................................................................................. 160mm(6.3")
l Wheelbase.................................................................................................................................................................... 275mm(10.83")
l Motor/ElectronicSpeedControl............................. 550BrushedMotorwith7.2~7.4Volt50AmpBrushedElectronicSpeedControl
l PinionGear/SpurGear.................................................................................................................................. 23T/69T(Metric48Pitch)
l Transmitter and Receiver..................................................................................................... Dry Cell 2-Channel AM 27MHz Pistol Grip
l Factory-AssembledwithFactory-PrintedBody
l6Cell2000mAhNi-MHBatteryPackand110VACCharger
l 7.2~7.4Volt50AmpElectronicSpeedControl
l Brushed550SizeMotorwithHeat-SinkandCoolingFan
l Cirrus2-ChannelAM27MHzPistolGripTransmitter
l CirrusCS603SteeringServo
l SealedBallBearingsforDrive-Line
l MoldedLightweightCompositeChassis
l MoldedCompositeShockTowers,FrontandRear
l BevelDifferentials,FrontandRear
l AluminumCapped,Oil-FilledShocks
INTRODUCTION
n Vertex RTR 4WD Stadium Truck Features
n Vertex RTR 4WD Stadium Truck Specications
TheVertex RTR 4WD Stadium TruckistheepitomeoftheSportR/Ctruckexperience.It'saReady-to-Run4WD1/10thscaleelectric
StadiumTruckthatiscompletewithradiocontrolsystem,forwardandreversingelectronicspeedcontrol,550brushedmotor,7.2volt
2000mAhNi-MHbatteryandasimplecharger,whichisallincludedinthiseasytodriveandenjoyableR/Chobbyradiocontrolledtruck!
Pullitoutofthebox,getthebatterytoppedoff,andgetitouttothedirt,readyfor4WDR/Ctruckaction.
Top-notchaluminumcomponentsandstrongbracingarestrategicallyusedintheVertex RTR 4WD Stadium Truck'sadvancedchassis
designtoensuredurabilityandenjoymentforuseafteruse.Addtothattheoillledshocks,aluminumdriveshaft,andacountersunk
moldedcompositechassisallowingthetrucktobedrivenhardonroadandoffroad,evenintheroughestterrain!
ThisOperatingManualisdesignedtohelpyougetyourVertex RTR 4WD Stadium Truckupandrunningasquicklyaspossible.In
additiontobasicinformationaboutyournewmodel,thisOperatingManualincludesprotips,achassistuningguide,explodedview
assemblydrawingsandacompletereplacementpartslistwithoptionparts.BesuretokeepthisOperatingManualhandyforfuturereference!
BeforeoperatingyournewVertex RTR 4WD Stadium Truck,pleasereadandunderstandthewarningslistedonthenexttwo
pages.Failuretodosocouldleadtoinjuryand/orpropertydamage.
Introduction...................................................................................... Page2
CustomerServiceInformation......................................................... Page3
SafetyWarningsandImportantInformation.................................... Page3
KitContents..................................................................................... Page4
ItemsRequiredtoOperateandMaintain......................................... Page5
BecomingFamiliarwithYourVertexStadiumTruck........................ Page6
TipsFromthePros........................................................................ Page10
PreparingtoDriveYourVertexStadiumTruck.............................. Page10
DrivingYourVertexStadiumTruck................................................ Page14
ChassisTuningGuide.................................................................... Page16
MaintenanceGuide........................................................................ Page21
TroubleshootingGuide................................................................... Page22
ExplodedViewAssemblyDrawings............................................... Page24
ReplacementPartsList.................................................................. Page30
OptionPartsList............................................................................. Page34
ReturningYourProductForWarrantyRepair................................. Page35
WarrantyInformation...................................................................... Page35

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CUSTOmER SERvICE INFORmATION
SAFETY WARNINGS AND ImpORTANT INFORmATION
l Undernocircumstancesshouldyouoperateyourmodelincrowdsofpeople.Seriousinjurycouldresult.
l Neveroperateyourmodelonbusystreetsoriftherearecarsaround.
l Donotuseyourmodeltochasepetsorotheranimals.
l Theelectronicsinyourmodelarenotwaterproof.Donotdrivethroughwater,wetgrass,mudorsnow.
l Becauseyourmodelisoperatedbyradiocontrol,itisimportanttomakesureyoualwaysusefreshand/orfullychargedtransmitter
batteries(ifusingNi-CdorNi-MHbatteries).Neverallowthetransmitterbatteriestorunloworyoucouldlosecontrolofthemodel.
l Ifyourmodelbecomesstuck,donotcontinuetoapplypowerordamagecanoccur.Releasethethrottleandretrieveyourmodel
byhand.
l Topreventexcessiver.p.m.sfromdamagingyourmotorand/ordrivetraincomponents,wesuggestreducingpowerwhileintheair
duringjumps.
l YourVertex RTR 4WD Stadium Truckisttedwithahigh-poweredbrushedmotor.Foryoursafety,pleaseusecautionatalltimesto
keepyourhands,looseclothing,etc.,awayfromanymovingparts.
l Thetiresonyourmodelwill'balloon'toalargerdiameterwhenmountedonahigh-speedmodel,suchastheVertex RTR 4WD
Stadium Truck.DONOTholdthemodelintheairandrunituptofullthrottleortirefailurecouldoccur.Checkthetiresoftentoensure
thatthey'resecurelygluedontothewheels.Ifyounoticeanysignsofseparation,regluethemusingahigh-qualitytireglue.
l Donotusethechargerincludedwithyourmodeltochargeanyothertypebattery.
l Thebatterypackshouldbedischargedbyrunningthemodeluntilitstops,thenrecharged.Thiswillensurethebatterypackisnot
over-charged.Allowthebatterypacktocooldownpriortorechargingit.
l Donotchargethebatterypackforlongerthan5hoursordamagetothebatterypackcouldresult.Thechargerincludedwithyour
modelisdesignedtoslow-chargetheincluded6Cell2000mAhNi-MHbatterypack.Thechargeroutputofthechargeris500mA,so
itwilltakeapproximately4hourstofullychargethebatterypackifit'sfullydischarged.
l Neverleavethebatterypackunattendedduringthechargingprocess.
l Aftercompletingthechargingprocess,unplugthechargerfromtheelectricaloutlet.
l Afteruse,unplugthebatterypackfromtheESC.DonotleavethebatterypackpluggedintotheESCwhilenotinuse.
n General Warnings, Power System Warnings and Battery and Charger Warnings
Continued On Next Page
IfyoushouldhavetroublewithanyofthestepslistedinthisOperatingManual,orifyoundamissingoradamagedpart
inyourkitorrequireadditionalinformation,pleasecontactCustomerServiceattheaddressbelow:
In North America:
Global Services
18480 Bandilier Circle
Fountain Valley, CA 92708
Phone: [phone]
Fax: [phone]
Email: [e-mail]



HobbyPeopleguaranteesthiskittobefreefromdefectsinbothmaterialandworkmanship,atthedateofpurchase.Thisdoes
notcoveranycomponentpartsdamagedbyuse,misuseormodication.In no case shall Hobby People's liability exceed the
original cost of the purchased kit. InthatHobbyPeoplehasnocontroloverthenalassemblyormaterialusedfornalassembly,
noliabilityshallbeassumedforanydamageresultingfromtheusebytheuserofthenaluser-assembledproduct.Bytheactofusing
thenaluser-assembledproduct,theuseracceptsallresultingliability.Fordetailedwarrantyinformation,refertopage35.
Before operating your new Vertex RTR 4WD Stadium Truck, please read and understand the warnings listed below and on the
nextpage.Failuretodosocouldleadtoinjuryand/orpropertydamage.


Page 4
Theseproductsmustnotbedisposedofwithotherhouseholdwaste.Instead,itistheuser'sresponsibilitytodisposeofthese
productsbyhandingthemovertoadesignatedcollectionpointfortherecyclingofwasteelectricalandelectronicequipment.The
separatecollectionandrecyclingoftheseproductsatthetimeofdisposalwillhelptoconservenaturalresourcesandensurethat
theyarerecycledinamannerthatprotectshumanhealthandtheenvironment.
Formoreinformationaboutwhereyoucantaketheseproductsforrecycling,pleasecontactyourlocalcityormunicipalofce,
yourhouseholdwastedisposalservice,orwhereyoupurchasedtheproduct.
LithiumPolymer(Li-Po)batteriesaresignicantlymorevolatilethanAlkalineorNi-Cd/Ni-MHbatteriesusedinR/Capplications.
WhenusingLi-Pobatteriestopoweryourmodel,allinstructionsandwarningsmustbefollowedclosely.MishandlingofLi-Pobatteries
canresultinre.
InadditiontothegeneralLi-Pobatterywarningsbelow,besuretounderstandandfollowthewarningsincludedwiththeparticularLi-Po
batteriesyouuse.
l ALWAYSfollowtheinstructionsincludedwithyourLi-Pobatteriesand/orLi-PochargertochargeLi-Pobatteries.
l DONOTattempttochargeLi-PobatterieswithanychargerotherthanachargerdesignedtochargeLi-Pobatteries.TheLi-Pobattery
chargeryouuseshouldincludeabalancingfeature.
l DONOTleaveLi-Pobatteriesunattendedduringthechargingprocess.
l ALWAYSchargeLi-Pobatteriesonare-resistantsurfaceandneverchargeLi-Pobatteriesnearanyammablematerial.
l DONOTuseorchargeLi-Pobatteriesiftheyarehottothetouch.
l DONOTleaveLi-Pobatteriesindirectsunlightorinahotcarorstoragearea,orallowLi-Pobatteriestobeexposedtomoisture.
l DONOTshort-circuitLi-Pobatteries.
l DONOTleaveLi-Pobatteriespluggedintoyourmodelwhennotinuse.Li-Pobatteriesshouldbestoredinare-proofcontainer.
l ALWAYSletLi-Pobatteriescoolbetweenusesandcharging.
l INSPECTLi-Pobatteriesbeforeeachuseforswellingorothermalformation.Ifdamaged,theyshouldnotbeused.
l DONOTpoke,bendorotherwisedamageLi-Pobatteries.DONOTshort-circuit.
l DONOTallowLi-Pobatteriestoeverexceed71ºC(160ºF)foranyreason.
SAFETY WARNINGS AND ImpORTANT INFORmATION
n Alkaline, Ni-Cd, Ni-MH, and Li-Po Battery Instructions for Disposal
n Lithium Polymer (Li-Po) Battery General Warnings
kIT CONTENTS
AfteropeningyourVertex RTR 4WD Stadium Truck,removeallofthepartsfromtheboxanddouble-checkthatyouhaveallofthe
itemslistedbelow.
Ifyoundapartismissingordamaged,pleasecontactCustomerService,usingtheCustomerServiceInformationonpage3.
*Maycomeinstalledonchassisandnotlooseinthebox.
Forinformation about usingthe Cirrus2-Channel pistolgrip transmitterincluded with yourVertex RTR 4WD Stadium Truck,
pleaseseepages6~7andpages14~15.
Kitcontentsaresubjecttochangeatanytimewithoutnotice.
l TransmitterAntenna
l BodywithMountedWing(Printed)*
l TiresandWheels(Glued)*
l Decals
lVertex RTR 4WD Stadium TruckwithElectronics
l 2-ChannelAM27MHzPistolGripTransmitter
l6Cell2000mAhNi-MHBattery*
l 110VAC7.2VDC500mACharger
l ReceiverAntennaSupportTube
l ReceiverAntennaSupportTubeCap
l BodyMountingClips(4)*
l ShockSpringPreloadSpacers*


Page 5
ITEmS REqUIRED TO OpERATE AND mAINTAIN
Thefollowingitemsarerecommendedtodrive,maintainandmakechassissetupadjustmentstoyourVertex RTR 4WD Stadium Truck.
l Eight'AA'AlkalineBatteriesforTransmitter
l Solder(forElectronics)andSolderingIron*
l HeatGunorLighter(forHeat-ShrinkTubing)*
l MetricRuler
l#1and#2PhillipsHeadScrewdrivers
l 1.5mmand2.0mmHexWrenches
l 5.0mmand5.5mmNutDrivers
l AdjustableWrench(toAdjustTurnbuckles)
l ScissorsorModelingKnife
l MotorSprayandBallBearingOil
l Threadlock
l AssortedWeightsofSiliconeOiltoTuneShocks(Optional)
l DifferentialGreasetoTunetheDifferentials(Optional)
n Miscellaneous Requirements
n Battery Pack Options
TheVertex RTR 4WD Stadium Truckfeaturesa6Cell2000mAhNi-MHbatterypackwhichprovidesagoodcombinationofpowerand
run-timeforyourmodel.However,ifyoudesire,youcanpurchaseseparatelyeitheralargercapacityNi-MHorLi-Pobatterypackfor
morerun-time.
Optional Ni-MH or Li-Po Battery Pack - for Increased Run-Time
l One 6C 5000mAh Ni-MH Battery Pack
l One2S5000mAh(25Corgreater)CarLi-PoBatteryPack
TheESCcanhandle6Ni-CdorNi-MHcells,or2Li-Pocells.DonotexceedthemaximumcellcountortheESCwillbedamaged!
Thehigherthecapacityofthebatterypack(e.g.,mAh),thelongertherun-timeyouwillexperience,buttheheavierthebattery
packwillbe.Theheavierthebatterypackis,themoresolidlythemodelwillfeel'planted'totheground,butthelessnimblethe
modelwillhandle.Whilethecapacityofthebatterypackyouchoosecanbeashighasdesired(whilestillallowingthebatterypackto
tinthebatteryholder),thecellcountshouldneverexceedthemaximumfortheESC.
If you change connectors on your battery pack and/or the ESC, make sure to observe correct polarity. This will ensure that when
youplugthebatterypackintotheESCthatyoudonotplugitinwithreversepolarity.Pluggingthebatterypackinwithreverse
polaritywilldamagetheESCandpossiblydamageyourbatterypack.
IMPORTANT - IF YOU'RE USING A HIGHER CAPACITY NI-MH BATTERY PACK:Althoughthechargerincludedwithyourmodel
canchargeahighercapacitybattery,itwilltakeaverylongtime(approximately10hourstochargea5000mAhNi-MHbattery).We
recommendpurchasingseparatelyanAC/DCorDConlyNi-CD/Ni-MHPeak-DetectionFastChargertochargelargecapacitybattery
packs.Seeyourlocalhobbyretailerformoreinformation.
IMPORTANT - IF YOU'RE USING A LI-PO BATTERY PACK:TheESCfeaturesamaleTamiyaconnector.MostLi-Pobatterypacks
willnotcomewithamatchingFemaleTamiyaconnectortoplugintotheESC.Ifthisisthecasewithyourbatterypack,youwillneed
toalsopurchase(ormakeyourself)anadaptertogofromyourLi-PobatterypacktotheESC.Seeyourlocalhobbyretailerformore
information.
IfyouopttouseaLi-Pobatterypack,youmustalsopurchaseseparatelyadedicatedLi-Pobatterycharger.Seeyourlocalhobby
retailerformoreinformation.

*Requiredonlyifchanging theconnectoroneitheryour batterypackand/ortheESC,
orwhenaddingamatchingconnectortoanafter-marketbatterypack.SeetheBattery
PackOptionssectionbelowformoreinformation.

Page 6
BECOmING FAmILIAR WITh YOUR vERTEX STADIUm TRUCk
UsethephotoanddescriptionsbelowtofamiliarizeyourselfwiththefeaturesanduseoftheCirrus2-ChannelAM27MHzPistolGrip
transmitterincludedwithyourVertex RTR 4WD Stadium Truck.Featuredescriptionscanbefoundonthenextpage.
n Transmitter Overview
Eachradiocontrolsystemcomeswithastickeronthetransmitterandreceivershowingwhichfrequency(channelnumber)theradio
controlsystemoperatesoninthe27MHzfrequencyband.Notworadiocontrolsystemscanoperatenearbyeachotherifthey
areonthesamefrequency.27MHzAMtransmitterandreceivercrystalscanbepurchasedseparatelyandchangedifyouaredriving
yourVertex RTR 4WD Stadium Truckwithotherpeopleonthesamechannelnumberasyou.Formoreinformationaboutpurchasing
differenttransmitterandreceivercrystals,seeyourlocalhobbyretailer.

l 2-ChannelAM27MHzwithPowerLevelIndicators
l SteeringandThrottleServoReversing
l AdjustableSteeringandThrottleTrims
l IndependentRightandLeftSteeringEndPointAdjustments
TheThrottleTrimKnob,theSteeringTrimKnob,andallfourEPA(EndPointAdjustment)Knobsfeatureamoldedindicatoronthem
tohelpidentifytheircenterpositions.
Continued On Next Page
*UpgradingyourtransmittertouserechargeableNi-CdorNi-MHbatteriesiseasy.Youwillneedtopurchase8'AA'rechargeableNi-Cd
orNi-MHbatteriesofdesiredcapacityandacompatiblecharger.Thetransmitterisdesignedtousea110VACinput12VDC250mA
outputcharger,somanyovernighttransmitter/receivertypewallchargerswillwork.Thechargetimewilldependonthecapacityofthe
batteriesandthemAoutputofthechargeryouchoose.Forexample,ifthebatteriesyouuseare1200mAhandthechargeroutputis
150mA,thechargetimewillbeapproximately8hours.FormoreinformationaboutpurchasingNi-CdorNi-MHbatteriesandacharger
foryourtransmitter,seeyourlocalhobbyretailer.
l IndependentForwardandReverseThrottleEndPointAdjustments
l AdjustableSteeringDualRate
l OptionalNi-CdorNi-MHBatteriesandOnboardChargerAvailable*
Antenna
PowerIndicatorLights
SteeringChannel
ReversingSwitch(CH1)
ThrottleChannel
ReversingSwitch(CH2)
ON/OFFSwitch
Crystal
SteeringWheel
ThrottleTrigger
SteeringDualRateDial
SteeringTrimKnob
ThrottleTrimKnob
SteeringEPAKnobs
ThrottleEPAKnobs
BatteryCompartment
ChargingJack
WristStrapAnchor
Grip

Page 7
BECOmING FAmILIAR WITh YOUR vERTEX STADIUm TRUCk
Antenna:Transmitsthesignalfromthetransmittertothereceiverinthemodel.Theantennashouldbefullyextendedduringuse.When
collapsingtheantennaafteruse,becarefulnottobendit.
Battery Compartment:Housesthe8'AA'Alkalinebatteriesthatpowerthetransmitter.
Charging Jack:UsedforonboardchargingofoptionalNi-CdorNi-MHbatteries.
DonotattempttochargeAlkalinebatteries.OnlyNi-CdorNi-MHbatteries(availableseparately)shouldbechargedthroughthe
ChargingJack,usingonlytherecommendedtypeofcharger.Formoreinformation,seethebottomofthepreviouspage.
Crystal:Controlsthefrequency(channelnumber)ofthetransmitter.Youcanchangecrystalsinboththetransmitterandthereceiver
sothatyouandyourfriendscandriveatthesametime.Notworadiocontrolsystemsnearbycanbeoperatedonthesamechannel
numberatthesametimewithoutinterference.Thetransmitterandreceiveruse27MHzcrystalsets.
Grip:TheGripismoldedinanergonomicshapeforincreasedcomfort,controlandfeel.
Power Indicator Lights:Indicatethecurrentstatusofthetransmitterbatteries.WhentheallthreePowerIndicatorLightsareilluminated
thebatterieshavesufcientcapacitytopowerthetransmittersafely.IfonlytheredandyellowPowerIndicatorLightsareilluminatedthe
batterieshaveonlylimitedcapacitytopowerthetransmitter.Inthiscase,thebatteriesshouldbereplacedassoonaspossible.Ifonly
theredPowerIndicatorLightisilluminated,thebatteriesaredepletedandshouldbereplaced(orrecharged,ifusingoptionalrechargeable
Ni-CdorNi-MHbatteries).DoNOTattempttousethetransmitterifonlytheredPowerIndicatorLightisilluminated.
Power Switch:Turnsthetransmitter'ON'and'OFF'.
Steering Channel Reversing Switch:Allowsyoutoelectronicallyswitchthedirectionofsteeringservotravel.Forexample,ifyou
movethesteeringwheeltotherightandthesteeringservomovestotheleft,iptheSteeringChannelReversingSwitchtomakethe
steeringservomovetotheleft.
Steering Dual Rate Dial:The Steering Dual Rate dialallows youto change the amount ofsteering servo travel compared tothe
amountofphysicalmovementofthesteeringwheel.Forexample,byincreasingtheSteeringDualRate(movingthedialforward),you
canmakethesteeringservotravelmorewhichmightpreventyourmodelfrompushingduringturns.Ifyourmodeloversteersduring
turns,youcanreducetheamountofSteeringDualRate(movethedialbackward).
Steering EPA Knobs: TheSteeringEPA(EndPointAdjustment)Knobsareusedtoadjustthedesiredamountofsteeringservotravel
inbothdirectionsindependently.Thismakesitpossibletobalanceservotravelinbothdirectionsbyeitherincreasingordecreasing
servotravelineitherdirection.Oneknob(EPA-STLeft)increasesordecreasessteeringservotravelintheLeftdirectionandthesecond
knob(EPA-STRight)increasesordecreasessteeringservotravelintheRightdirection.
Steering Wheel:Proportionallyoperatesthemodel'srightandleftsteeringcontrol.TheSteeringWheelfeaturesafoamgripfor
increasedcomfort,controlandfeel.
Steering Trim Knob:Usedtoadjustthecentertrimofthesteeringchannel.Turningtheknobforward(clockwise)increasessteering
triminonedirectionandturningtheknobbackward(counter-clockwise)increasessteeringtrimintheoppositedirection.Make
adjustmentswiththeSteeringTrimKnobtomakeyourmodeldriveinstraightlinewithoutanyinputfromthesteeringwheel.
Throttle Channel Reversing Switch:Allowsyoutoelectronicallyswitchthedirectionthatthemotoroperatesinrelationtothethrottle
trigger.Forexample,ifyoupullthethrottletriggertoaccelerateforward,butthemodelgoesinreverse,iptheThrottleChannelReversing
Switchtomakethemodelaccelerateforward.
Throttle EPA Knobs: TheThrottleEPA(EndPointAdjustment)Knobsareusedtoadjustthedesiredamountofthrottleinboth
directionsindependently.ThismakesitpossibletoadjusttheamountofthrottleinboththeForwardandReversedirectionsbyeither
increasingordecreasingthrottleineitherdirection.Oneknob(EPA-THBackward)increasesordecreasesthrottleintheReversedirection
andthesecondknob(EPA-THForward)increasesordecreasesthrottleintheForwarddirection.
Throttle Trigger:Controlsthespeedofthemodel,bothforwardandbackward.Alsocontrolsthebrakingabilityofthemodel.When
youpullthethrottletriggerbacktowardyou,themodelacceleratesforward.Whenyoupushthethrottletriggerawayfromtheyou,the
modelbrakes.Whenyoureleasethethrottletriggermomentarily,thenpushitawayfromyouagain,themodelgoesinreverse.
Throttle Trim Knob:Usedtoadjustthecentertrimofthethrottlechannel.Turningtheknobforward(clockwise)increasesthrottletrim
inonedirectionandturningtheknobbackward(counter-clockwise)increasesthrottletrimintheoppositedirection.Makeadjustments
totheThrottleTrimKnobsothatthemodeldoesn'tmove(themotoris'OFF')whenthethrottletriggerisintheneutralposition.
Wrist Strap Anchor:Usedtoconnectanoptionalwriststrap(availableseparately)tothetransmitter.
n Transmitter Overview, Continued....

Page 8
BECOmING FAmILIAR WITh YOUR vERTEX STADIUm TRUCk
UsethephotoanddescriptionsbelowandonthenextpagetofamiliarizeyourselfwiththeVertex RTR 4WD Stadium Truckmainchassis
components.
n Chassis Component Overview
Battery Holder: Molded out of impact-resistant nylon plastic, the battery holder rmly holds the battery pack that powers the Vertex RTR
4WD Stadium Truck.Thebatteryholderissizedtotmost6cellNi-CdorNi-MHbatterypacksand2SLi-Pocarbatterypacks.
Body Mount:Moldedoutofimpact-resistantnylonplasticforstrength,thebodymountsupportsthebody.Theheightofeachbody
mountisadjustabletoallowtheuseofafter-marketbodies,ortoadjusttheheightofthestockbody.
Chassis Brace:Moldedoutofimpact-resistantnylonplasticforstrength,thechassisbraceissecuredbetweenthefrontandrear
gearboxesandhelpsminimizechassisex.
ESC:TheESC(ElectronicSpeedControl)isasolid-statedevicethattakespowerfromthebatterypackandthethrottlesignalfromthe
receiverandconvertsthemintoproportionalpowerforthemotor.TheVertex RTR 4WD Stadium Truckfeaturesahigh-quality50Amp
ESCthatcanhandle6cellNi-CdsorNi-MHs,or2SLi-Pos.Inaddition,theESCfeaturesaBatteryEliminatorCircuit(BEC),forward
andreversecontrol,andamachinedaluminumheat-sinkthathelpskeeptheESCfromoverheating.
Motor with Heat-Sink:Themotorprovidesthepowertothedrivetrain.TheVertex RTR 4WD Stadium Truck featuresa550sizebrushed
motorthatincludesanaluminumheat-sinkandanintegratedcoolingfantohelpkeepmotortemperaturesundercontrol.
Bumper:Moldedoutofimpact-resistantnylonplastic,thebumperprotectsthechassisfrommosthead-onimpacts.
ESC Battery Leads:TheESCbatteryleadsarewhereyouplugyourbatterypackintopoweryourVertex RTR 4WD Stadium Truck.
TheESCbatteryleadsfeatureamaleTamiyaconnectorthatiscompatiblewithmanyafter-marketNi-CDandNi-MHbatterypacks.
ESC On/Off Switch:TurnstheESC'ON'and'OFF'.Whenturned'ON',theESCpowersthereceiver,steeringservoandmotor.
Receiver:Thereceiverreceivesthesignalfromthetransmitterandconvertsthatsignalintothedesired commands. Forexample,
whenyouturnthetransmitter'ssteeringwheeltotheright,thereceiverreceivesthatsignalandcommandsthesteeringservototurn
thewheelstotheright.
Continued On Next Page
Receiver
BatteryHolder
Bumper
ShockTower
ESC
Motor
withHeat-Sink
Wheel/TireAssembly
ShockAbsorber
BodyMount
SteeringServo
SteeringTie-Rod
SuspensionArm
Turnbuckle
ESCBattery
Leads
ESCOn/Off
Switch
ChassisBrace

Page 9
Brushless Motor
Size:550
ShaftDiamteter:1/8"(3mm)
Brushless ESC
NominalInputVoltageRange:7.2~7.4Volts(6CNi-CdorNi-MH/2SLi-Po)
OutputRating:50Amps
BEC:Yes
ThrottleControlRangeCalibration:Automatic
Shock Absorber:Eachshockisoil-lledandusesaspringthatiswellsuitedformostoff-roadconditions.Theshocksfeaturealuminum
capsfordurabilityandpreloadspacersthatallowtheshockstobeeasilytunedfordifferentdrivingconditions.Theshockscome
standardwith25wtoilandbluesprings.
Shock Tower: Securestheshockabsorberwhileallowingmanydifferentgeometrysettingstosuitdifferenttrackconditions.Theshock
towersaremoldedoutofhigh-impactnylonplastic.
Steering Servo:ControlstheVertex RTR 4WD Stadium Truck'ssteering.Anadjustable'servosaver'isusedtohelppreventtheservo
gearsfrombeingstrippedoutandtoadjuststeeringsensitivity.
Steering Tie-Rod:Thesteeringtie-rodconnectsthesteeringcontrollinkageandthesteeringknuckle.Thetie-rodsareadjustableso
youcanmaketoe-angleadjustmentstothefrontwheels.
Suspension Arm:HelpssupporttheVertex RTR 4WD Stadium Truck’shandling(whencoupledtoshockabsorbers)andbrakingwhile
ensuringmaximumtraction(keepsthewheelsincontactwiththeground)andprotectsthechassiscomponentsfromunduestressandstrain.
Turnbuckle:Joinstheupperinnerandupperoutersuspensioncomponents.Theturnbuckleisthreaded,allowingyoutoadjustthe
camberangleofthefrontandreartires.
Wheel/Tire Assembly:TheVertex RTR 4WD Stadium Truckfeaturesmoldedrubbertireswithanaggressivetreadpatternthatisgood
formostoff-roadapplications.Thewheelsaremoldedinonepiecefromlightweight,high-impactplasticforstrength.
n Chassis Component Overview, Continued....
BECOmING FAmILIAR WITh YOUR vERTEX STADIUm TRUCk
n Power System Overview
TheESCbatteryleadsfeatureamaleTamiyaconnector.Thisisacommonconnectorthatisperfectforusewithbrushedpower
systems.ThisconnectorcanalsobeusedwithaLi-Pobattery(availableseparately).
Themotorleadsshouldbeconnectedasfollows:ESCBluetomotorBlueandESCYellowtomotorYellow.
PositiveBattery
Lead(Red)
NegativeBattery
Lead(Black)
On/OffSwitch
ESCThrottleLead MotorLeads
MotorShaft
1/8"(3mm)
MotorLeads
Heat-Sink
Capacitor
BatteryConnector
TheESCdoesnotrequireanytypeofmanualcalibrationtoachievethecorrectthrottlecontrolrange.Calibrationisdone
automaticallywhenthetransmitterandESCareturned'ON'.
Heat-Sink
AuxiliaryInput
Connector(NotUsed)
CoolingFan

Page 10
TIpS FROm ThE pROS
pREpARING TO DRIvE YOUR vERTEX STADIUm TRUCk
n Transmitter and Receiver
Continued On Next Page
l Double-checkallofthefastenerstoensurethatthey'retight.
l Donotovertightenanyscrewsthatthreadintonylonorcompositematerial,orthematerialmaystripout.Screwsthreadedintonylon
orcompositematerialneedonlybetightenedsnugly.
l Ifyouhavedifcultyslidingthereceiverantennawirethroughtheantennasupporttube,rstpulltheantennawirethroughyourngers
severaltimestostraightenit,thenlightlywettheantennawirewithglasscleaner.Theglasscleanerwillmaketheantennawireslide
throughtheantennasupporttubemucheasier.
l Leaveanyexcessantennawirehangingfromthetopoftheantennasupporttube.Undernocircumstancesshouldyoucuttheantenna
wireshorter.
l Duringuse,thetransmitterantennashouldbeextendedfully.
l AlwaysmakesurethatyouinstallthebodywhendrivingyourVertex RTR 4WD Stadium Truck.IfyourVertex RTR 4WD Stadium
Truckipsover,thebodywillhelpprotectthechassisanditscomponents.
l Beforecheckingthesteeringandthrottlecontrols,werecommendplacingyourVertex RTR 4WD Stadium Truckonacarstandso
thatthewheelsareofftheground.Thiswillensureyoursafetyandthesafetyofyourmodelwhiletestingthethrottlecontrol.
l  Ifthemotordoesnotseemtobeproducingfullpower,double-checkthatyourbatterypackisfullycharged,thendouble-checkthat
thetransmitter'sthrottlechannelForwardEPAissettoMaximum.Formoreinformation,seepage15.
l Makesureyoualwaysusefreshand/orfullychargedtransmitterbatteries(ifusingNi-CdsorNi-MHs).Neverallowthetransmitter
batteriestorunloworyoucouldlosecontrolofthemodel.
l Thebatterypackshouldbedischargedbyrunningthemodeluntilitstops,thenrecharged.Thiswillensurethebatterypackisnot
over-charged.Allowthebatterypacktocooldownpriortorechargingit.Thebatterypackwilltakeapproximately4hourstocharge.
Donotchargethebatterypackforanylongerthan5hoursorthebatterypackcouldbedamaged.
q Pushthetransmitterantennadownintotheantennamountingholeinthetopofthe
transmitter.
q Threadtheantenna(clockwise)intoplaceandtightenitgentlyuntilitstops.
IMPORTANT:Donotforcetheantennaintoplaceortightenittoostrongly.Doing
socoulddamagetheantennaand/orthetransmitter.
q Removethebatterycoverfromthebottomofthetransmitterbypushingrmlyonthe
batterycoverinthedirectionofthearrow.
q Verifythatthetransmitteristurned'OFF'.TheOn/Offswitchshouldbepushedtoward
thebackofthetransmitterwhen'OFF'.

Page 11
pREpARING TO DRIvE YOUR vERTEX STADIUm TRUCk
Continued On Next Page
n Transmitter and Receiver, Continued....
PRO TIP:Ifyouhavedifcultyslidingtheantennawirethroughtheantennasupport
tube,rstpulltheantennawirethroughyourngersseveraltimestostraightenit,
thenlightlywettheantennawirewithglasscleaner.
q Uncoilthereceiverantennawire,feeditupthroughtheantennasupporttubemount,
thenslidethereceiverantennawirethroughtheantennasupporttube.
IMPORTANT: VerifythatthesteeringservoandESCthrottleleadsarepluggedintochannel1andchannel2inthereceiver,respectively.
q Pushtheendoftheantennasupporttubedownintotheantennasupporttubemount.
IMPORTANT:Leaveanyexcessantennawirehangingfromthetopoftheantenna
supporttube.Undernocircumstancesshouldyoucuttheantennawireshorter.
q Pushtherubbercapoverthetopoftheantennasupporttubetokeepanydirtand
debrisoutofit.Allowanyexcessantennawiretohangfromthetopoftheantenna
supporttube.
q Install8fresh'AA'Alkalinebatteriesintothebatterytray,double-checkingtomakesure
thatthepolarity(+/-)iscorrect.Thedirectionthateachbatteryshouldbeinstalled
ismoldedintothebatterytray('+'Positiveand'-'Negative).
q Slidethe batterycover back onto the transmitterand push it rmly untilit 'clicks'
closed.Setthetransmitterasidefornow.
n Charging the Battery Pack
q Plugthechargerintoa110voltwallsocket.
q Plugthechargerconnectorintothebatterypackconnector.Thebatterypackwill
begincharging.Allowthebatterypacktochargefor4hours,thenunplugthebattery
packfromthecharger.
WARNING:Priortochargingthebatterypack,pleasereadandunderstandthewarningslistedbelow.
l Donotusethechargerincludedwithyourmodeltochargeanyothertypebattery.
l Thebatterypackshouldbedischargedbyrunningthemodeluntilitstops,thenrecharged.Thiswillensurethebatterypackisnot
over-charged.Allowthebatterypacktocooldownpriortorechargingit.
l Donotchargethebatterypackforlongerthan5hoursordamagetothebatterypackcouldresult.Thechargerincludedwithyour
modelisdesignedtoslow-chargetheincluded6Cell2000mAhNi-MHbatterypack.Thechargeroutputofthechargeris500mA,so
itwilltakeapproximately4hourstofullychargethebatterypackifit'sfullydischarged.
l Neverleavethebatterypackunattendedduringthechargingprocess.
l Afteruse,unplugthebatterypackfromtheESC.DonotleavethebatterypackpluggedintotheESCwhilenotinuse.
l Ifthebatterypackbecomeshottothetouchduringthechargingprocess,unplugitfromthechargerimmediatelytopreventover-charging
anddamagingthebatterypack.

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pREpARING TO DRIvE YOUR vERTEX STADIUm TRUCk
Continued On Next Page
q WiththeESCOn/Offswitchinthe'OFF'position,plugthebatterypackconnector
intotheESCbatteryconnector,double-checkingthatthepolarityiscorrect.Positive
(red)topositive(red)andnegative(black)tonegative(black).
Werecommendthatyouinstallthebatterypackwiththebatteryleadstowardthe
backofthebatteryholder.
q Pushthebatterypackintothebatteryholder,thenreinstallthebatterymountingplate,
makingsurethatit'spusheddownrmlyagainstthetopofthebatterypack,tohold
thebatterypacksecurelyinplace.
n Battery Pack Installation and Power Connections
n Checking the Steering and Throttle Controls
IMPORTANT:Beforecheckingthesteeringandthrottlecontrols,werecommendplacingtheVertex RTR 4WD Stadium Truckonacar
standsothatthewheelsareofftheground.Thiswillensureyoursafetyandthesafetyofyourmodelwhiletestingthethrottlecontrol.
q Turn the transmitter 'ON' and verify that it has sufcient power.All three Battery
IndicatorLightsshouldbeilluminated.
q Removethetwoclipsthatholdthe battery mountingplateinplace,thenpull the
batterymountingplateuptoremoveit.
Whenreinstallingthebatterymountingplate,notethatthelongerclipisinstalledat
therearandtheshorterclipatthefront.
PRO TIP:Noticethatthebatterymountingplatepostshaveseveraldifferentholesinthemtoaccommodatedifferentthickness
batterypacks.Thisisconvenientifyou'reusinganafter-marketbatterypack,suchasa2SLi-Po.
q VerifythattheESCOn/Offswitchisturned'OFF'.TheOn/Offswitchshouldbepushed
forwardtowardthefrontofthechassiswhen'OFF'.
Toensureyoursafety,it'simportantthattheESCbeturned'OFF'whenconnecting
yourbatterypack.

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pREpARING TO DRIvE YOUR vERTEX STADIUm TRUCk
q Rotatethesteeringwheelforward(totheright).TheVertex RTR 4WD Stadium
Truck'sfrontwheelsshouldturnright.
IMPORTANT:Ifthewheelsdon'tturnright,movethetransmitter'ssteeringchannel
servoreversingswitchtochangethedirectionthatthefrontwheelsturn.Formore
information,seepage6.
q Rotate the steering wheel backward (to the left). The Vertex RTR 4WD Stadium
Truck'sfrontwheelsshouldturnleft.
q Letgoofthesteeringwheel.TheVertex RTR 4WD Stadium Truck'swheelsshould
returntocenter.
IMPORTANTIfthewheelsdonotpointstraightahead(center)afteryoureturnthe
steeringwheeltocenter,usethetransmitter'ssteeringtrimknobtoadjustthewheels
sothattheypointstraightahead.Formoreinformation,seepage15.
IMPORTANT:Ifthewheelsdon'tspinforward,movethetransmitter'sthrottle
channelservoreversingswitchtochangethedirectionthatthewheelsspin.Formore
information,seepage6.
q Pullthethrottletriggerback.Boththefrontandrearwheelsshouldspinforward.
q Releasethethrottletriggerandthewheelsshouldstopspinning.
q Pushthethrottletriggerforward.Boththefrontandrearwheelsshouldspinbackward.
q Releasethethrottletriggerandthewheelsshouldstopspinning.
IMPORTANT:Ifthewheelscontinuetospinafterreleasingthethrottletrigger,
usethetransmitter'sthrottletrimknobtoadjustthethrottlesothatthewheels
don'tspinwhenthethrottletriggerisreleased.Formoreinformation,seepage15.
As a safety precaution to prevent damage to the drivetrain, the Vertex RTR 4WD Stadium Truck must be stopped before going
intoreverse.Formoreinformation,seepage15.
n Applying the Decals and Installing the Body
IMPORTANT:AlwaysmakesurethatyouinstallthebodywhendrivingyourVertex RTR 4WD Stadium Truck.IfyourVertex RTR
4WD Stadium Truckipsover,thebodywillhelpprotectthechassisanditscomponents.
n Checking the Steering and Throttle Controls, Continued....
q TurntheESCOn/Offswitch'ON'.ThesteeringservowillcenterandtheESCwill
emitseveralaudibletones.ThisindicatesthattheESCisoperatingcorrectlyand
thatthemotorisarmed.
Continued On Next Page

Page 14 Continued On Next Page
DRIvING YOUR vERTEX STADIUm TRUCk
TheVertex RTR 4WD Stadium Truckissimpletodrive,yetwillprovideahighlevelperformanceandhoursofenjoyment.Thissection
willdetailtheuseofthetransmitter'sdifferentfunctionstohelpyougetthemostoutofyourdrivingexperience.Beforereadingthrough
thissection,youshouldhavereadandcompletedtheproceduresintheprevioussectionsofthisOperatingManual.
q Aftersuccessfullycompletingtherangecheck,extendthetransmitterantennacompletely,makesurethatyou'reusingfully-charged
batterypack,andthatthetransmitterbatterieshavesufcientpower.AllthreeBatteryIndicatorLightsshouldbeilluminated.
PriortodrivingyourVertex RTR 4WD Stadium Truck,theradiocontrolsystemmustberangechecked.Thiswillensurethattheradio
controlsystemisoperatingproperlyandwillhelptopreventanychanceofarunawaymodel.Youshouldperformarangecheckbefore
therstrunofthedayand/orafteracrash.
n Range Checking the Radio Control System
q Turnthetransmitter'ON',thenturnthereceiver'ON'.
q Withthetransmitterantennaretracted(pushedallthewaydown),walkawayfromtheVertex RTR 4WD Stadium Truckabout25feet
(10meters).MovethesteeringwheelwhilelookingattheVertex RTR 4WD Stadium Truck'sfrontwheels.Thewheelsshouldmove
backandforthsmoothlywithoutany'glitching'orinterference.
IMPORTANT:Beforerangecheckingtheradiocontrolsystem,werecommendplacingtheVertex RTR 4WD Stadium Truckon
acarstandsothatthewheelsareofftheground.Thiswillensureyoursafetyandthesafetyofyourmodelduringtherangecheck.
IMPORTANT:Iftheradiocontrolsystemdoesnotoperateproperly,pleaserefertothetroubleshootingguideonpages22and23
beforecontinuingfurther.NeverattempttooperateyourVertex RTR 4WD Stadium Truckiftheradiocontrolsystemisnot
functioningproperly.
n Driving Your Vertex RTR 4WD Stadium Truck
q Slidetheendoftheantennasupporttubethroughthepredrilledholeinthetopof
thebody,thentthebodyontothechassis(makingsurethatthefourfoampadsare
positionedbetweenthebodymountingpostsandtheinsideofthebody),usingthe
fourbodyclipsprovided(thetwosmallerbodyclipsareinstalledatthefrontandthe
largerbodyclipisinstalledattherear).
pREpARING TO DRIvE YOUR vERTEX STADIUm TRUCk
n Applying the Decals and Installing the Body, Continued....
q Althoughsomedecalshavealreadybeenappliedtothebody,ifyouwanttoapplyanyoftheremainingdecals,removethemfrom
theprotectivebackingandapplythemtothebodyasdesired.
WARNING:BeforedrivingyourVertex RTR 4WD Stadium Truck,alwaysturnthetransmitter'ON'rst,thenturntheESC'ON'.After
you'redonedrivingyourVertex RTR 4WD Stadium Truck,alwaysturntheESC'OFF'rst,thenturnthetransmitter'OFF'.Thiswill
preventanychanceofradiofrequencyinterferencecausingarunawaymodelordamagetothesteeringservo.
q ThebasictechniquesusedtodriveyourVertex RTR 4WD Stadium Truckareprettysimple.Toturnright,turnthesteeringwheel
forward(clockwise).To turnleft,turnthesteeringwheelbackward(counter-clockwise).To accelerateforward,pullthethrottletrigger
back.To applybrakes,pushthethrottletriggerforward.To gointoreverse,releasethethrottletriggermomentarily,thenpushthe
throttletriggerforwardagain.YouwillndthattheVertex RTR 4WD Stadium Truckisafast,nimble,andgreathandlingmodel.
IMPORTANT:BeforedrivingyourVertex RTR 4WD Stadium Truck,alwaysmakesuretoextendthetransmitterantennaoryou
willlosecontrolofthemodelafterashortdistanceawayfromyou.
TogetthemostoutofyourVertex RTR 4WD Stadium Truck,readthetransmitter-specicinformationonthenextpageandthe
ChassisTuningGuideonpages16through21.

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DRIvING YOUR vERTEX STADIUm TRUCk
n Driving Your Vertex RTR 4WD Stadium Truck, Continued....
Using the Steering and Throttle Trim Knobs
q Thesteeringtrimknobisusedtomakene-tunedadjustmentstothesteering.For
example,ifyourVertex RTR 4WD Stadium Truckconstantlywantstoturntotheright
ortotheleftwhileyou'redrivingonasmooth,atsurface,turnthesteeringtrimknob
intheoppositedirectionjustenoughsothatwhenyouletgoofthesteeringwheel,your
Vertex RTR 4WD Stadium Truckdrivesinastraightline.
q Thethrottletrimknobisused to make ne-tunedadjustmentstothethrottle.For
example,ifyoureleasethethrottletrigger,butyourVertex RTR 4WD Stadium Truck
stillmoveseitherforwardorinreverse,turnthethrottletrimknobintheoppositedirectionjustenoughsothatwhenyouletgoofthe
throttletrigger,yourVertex RTR 4WD Stadium Truckdoesn'taccelerateineitherdirection.
Using the Steering Dual Rate Dial
q Thesteeringdualratedialallowsyoutochangetheamountofsteeringservotravel
comparedtotheamountofphysicalmovementofthesteeringwheel.Forexample,by
increasingthesteeringdualrate(movethedialforwardwithyourthumb),youcanmake
thesteeringservo travelmore which mightprevent yourmodel from pushingduring
turns.Byreducingthesteeringdualrate(movethedialbackwardwithyourthumb)you
canmakethesteeringservotravellesswhichmightreducetheamountofturninthe
corners.Theamountthatyouincreaseordecreasethesteeringdualrateisproportional
withhowmuchyoumovethesteeringdualratedial.Adjustmentscanbemadewhile
you'redriving,soyoucanmakeadjustmentsduringarace,etc.
Using the Steering and Throttle EPA Knobs
q ThesteeringEPA(EndPointAdjustment)knobsareusedtoadjustthemaximum
desiredamountofsteeringservotravelinbothdirectionsindependently.Turningthe
EPA-STLeftknobcounter-clockwisedecreasesservotravelintheleft-handdirection
andturningtheEPA-STLeftknobclockwiseincreasesservotravelintheleft-hand
direction.TurningtheEPA-STRightknobcounter-clockwisedecreasesservotravelin
theright-handdirectionandturningtheEPA-STRightknobclockwiseincreasesservo
travelintheright-handdirection.Forexample,ifyourVertex RTR 4WD Stadium Truck
turnstotherightsharperthanitturnstotheleft,youcanincreaseleft-handsteering
travelbyturningtheEPA-STLeftknobclockwise(increaseleft-handsteering).Inaddition,ifyouhavetoomuchsteeringornotenough
steering,youcanincreaseordecreasebothknobsequalamounts.
q The throttleEPA (End PointAdjustment) knobs are used to adjust the maximum
desiredamountofthrottleinbothdirectionsindependently.TurningtheEPA-THBackward
knobcounter-clockwisedecreasesthemaximumamountofthrottleinthereverse
directionandturningtheEPA-THBackwardknobclockwiseincreasesthemaximum
amountofthrottleinthereversedirection.TurningtheEPA-THForwardknobcounter-
clockwisedecreasesthemaximumamountofthrottleintheforwarddirectionandturning
theEPA-THForwardknobclockwiseincreasesthemaximumamountofthrottleinthe
forwarddirection.Forexample,ifyourVertex RTR 4WD Stadium Truckacceleratestoo
fastinthereversedirection,youcanreducetheamountofreversethrottlebyturningtheEPA-THBackwardknobcounter-clockwise.
Inaddition,youmaybeabletoincreasetopspeedintheforwarddirectionbyturningtheEPA-THForwardknobclockwise.
INCDEC
Using the Braking and Reverse Functions
q Asdescribedpreviously,whenyoupullthethrottletriggertowardyou,theVertex RTR 4WD Stadium Truckwillaccelerate.Toapply
thebrakes,pushthethrottletriggerforward(awayfromyou),orifyoujustwanttoslowdownbycoasting,releasethethrottletrigger.
 Togointoreverse,theVertex RTR 4WD Stadium Truckmustbestopped.Thishelpspreventdamagetothedrivetrainbynotallowing
youtoslamthemotorintoreverse.WhentheVertex RTR 4WD Stadium Truckismovingforwardandyoupushthethrottletriggerto
gointoreverse,theVertex RTR 4WD Stadium Truckwillbegintobrakeandcometoastop.Togointoreverse,releasethethrottle
triggermomentarily,thenpushthethrottletriggerforwardagain.

Page 16
ChASSIS TUNING GUIDE
n Adjusting Toe Angle - Front
It'sveryimportantwhenmakingchangestothesettingsofyourVertex RTR 4WD Stadium Truckthatyoumakethesettingsthe
sameforeachside.Forexample,ifyouchangethespringtensiononthefrontrightshock,youshouldchangethespringtension
onthefrontleftshockthesameamount,etc.
ChassisalignmentandgeometryareimportantifyouwantyourVertex RTR 4WD Stadium Trucktoperformwell.Followourguidelines
inthissectiontogetthemostoutofyourVertex RTR 4WD Stadium Truck.
Donotmakeanychangesthataremorethan3degreesfromtheinitialsettingsorthehandlingcharacteristicsofyour
Vertex RTR 4WD Stadium Truckwillbecomeverypoor.
Thetoeangleistheangleofbothfronttires(orreartires)toeachother,whenviewedfromabove.'Toe-in'iswhenthefrontofbothtires
pointtowardeachotherand'toe-out'iswhenthefrontofbothtirespointawayfromeachother.
l Forthefronttires,toe-inwillmaketheVertex RTR 4WD Stadium Trucktrack(run)straighter,butthesteeringwillbemoresensitive.
Toe-outwilldesensitizethesteering,makingtheVertex RTR 4WD Stadium Truckalittlemoredriver-friendly.
l Toe-inonthereartiresisxedatapproximately2degrees.Thiswillgivetherearendalittlemore'bite'(traction).
Addingmorethan3degreesoftoe-inortoe-outonthefrontwillresultinexcessivelossofspeedanderratichandling.To e
adjustmentsshouldbemeasuredwiththeVertex RTR 4WD Stadium Truckatitsnormalrideheight.

l 1~2degreestoe-inonthefronttoprovidestabilityandincreasesteeringsensitivity.Toe-inonthereartiresisxedatapproximately
2degreesandisnotadjustable.
Straight-NoToe
Toe-In
Toe-Out
Byadjustingthespringtensionoftheshocks,youcanincreasesteeringsensitivity,adjusttheride-heightofthechassis,andne-tune
thedampingqualityofthesuspensionsystem.HowyoudriveyourVertex RTR 4WD Stadium Truckwilldictatewhatsettingsyoushould
beusing.
Forexample,ifyou'redrivingyourVertex RTR 4WD Stadium Truckoff-roadandgoingoverlotsofjumps,youmaywanttoincreasethe
springtensionofthefrontshockstohelppreventthefrontoftheVertex RTR 4WD Stadium Truckfrombottomingout.Ifyou'reracingyour
Vertex RTR 4WD Stadium Truck,localtrackconditionswilldictatethesettingstouse.
n Adjusting Shock Spring Tension - Front and Rear

l Werecommendinitiallyusingthepreloadspacersthatarealreadyinstalledontheshocks.
q Increaseordecreasespringtensionbysnappingdifferentpreloadspacersontothe
shockbodybetweenthetopoftheshockspringandthetopoftheshock.Usinga
tallerpreloadspacerincreasesspringtensionandthechassis'srideheight,andwill
stiffentheoveralldampingcharacteristicsofthesuspension.Usingashorterpreload
spacer(ornopreloadspacer) decreasesspringtensionandmakes the damping
characteristicsofthesuspensionsofter.
Whenadjustingthespringtension,makesuretoadjusttherightandleftshocksequally.
Continued On Next Page
PRO TIP:Formoreprecisetoeangleadjustments,useadedicatedtoeangle
adjustmentgauge,availableatmosthobbyretailers.
q Toadjustthetoe-angleofthefronttiresunsnapoutertie-rodballend,thenthreadthe
ballendinorouttoshortenorlengthenthetie-rod.Whensatisedwiththeresult,rmly
snaptheballendbackontotheball.Ifmoreadjustmentisrequired,theinnertie-rod
ballendcanbeadjustedusingthesametechnique.

Page 17
ChASSIS TUNING GUIDE
Camberisreferredtoastheamountofthetire'ssurfacethatcontactstheground.Tiresthatareexactlyperpendiculartotheground
have0degreesofcamber.Ifthetopofthetireleansintowardthechassis,thetirehasnegativecamber.Ifthetopofthetireleansout
awayfromthechassis,thetirehaspositivecamber.
l Camberangleshouldbeadjustedtoensuremaximumtirecontactbetweenthegroundandthetiresforyourparticulartrack.Youcan
checktoensuremaximumtirecontactbyrstcleaningyourtires,thenbyrunningyourVertex RTR 4WD Stadium Truckonyourtrack.
Afterrunning,checkthedirtand/orwearmarksonthetire.Adjustthecamberangleifthedirtand/orwearmarksaremoretowardthe
outsideortheinsideofthetire.
n Adjusting Camber Angle - Front and Rear

l Fordrivingonsmoothsurfacessetboththefrontandbacktiresat0degrees.
l Fordrivingonroughsurfacessetthefronttiresat-1degreeandthebacktiresat-2degrees.
q Toincreasepositivecamberangle,useanadjustablewrenchtoturntheupper
turnbucklesandlengthenthemtopushthetopofthetiresout.
CambersettingsshouldbemeasuredwiththeVertex RTR 4WD Stadium Truckatitsnormalrideheight.
PRO TIP:Formoreprecisecamberadjustments,useadedicatedcambergauge,availableatmosthobbyretailers.
Positive
Camber
Negative
Camber
q Toincreasenegativecamberangle,useanadjustablewrenchtoturntheupper
turnbucklesandshortenthemtopullthetopofthetiresin.
YoucanadjustyourVertex RTR 4WD Stadium Truck'ssteeringsensitivitybytighteningorlooseningtheservosaverspring.Ingeneral,
tighteningtheservosaverspringwillcausethesteeringtobemoreresponsive,andlooseningtheservosaverspringwillcausethe
steeringtobelessresponsive.
n Adjusting Steering Response - Front

l Werecommendleavingtheservosaveradjustmentringinthefactoryposition.
Tighteningtheservosaverspringincreasesthechanceofdamagingthesteeringservoduringacrash.We do not recommend
tightening the servo saver spring any more than the factory setting.
q Adjusttheservosaverspringbyturningtheknurledadjustmentringupordownusing
apairofpliers.Threadingtheadjustmentringdown(clockwise)willtightentheservo
saverspringandthreadingtheadjustmentringup(counter-clockwise)willloosenthe
servosaverspring.
Continued On Next Page

Page 18
ChASSIS TUNING GUIDE
Thefrontuppercamberlinkscanbemovedupordownontheshocktowertoadjustbumpsteer.Generally,ifyoumovethecamber
linksintoalowerposition,thiswillincreasebumpsteer,whichcanbehelpfulontighttracks.Foralargertrack,youmaywanttomove
thecamberlinkstoahigherpositiontodecreasebumpsteer.
n Adjusting Bump Steer - Front

l Werecommendinitiallyleavingthefrontuppercamberlinksinthefactorylocations.
Continued On Next Page
qRemovethe3x18.5mmRoundHeadscrewfromtheuppershockmount,thenremove
theshock(withtheshockmountingstudattached)fromtheshocktower.
q Reinstalltheshockand the shockmountingstudinto the desiredmountinghole,
makingsuretotightenthescrewsecurely.Installationisthereverseofremoval.
TheVertex RTR 4WD Stadium Truckshocktowersfeatureseveraldifferentmountingpositionsfortheshocks.Bychangingthe
locationoftheuppershockmountsyoucanmaketheshockfeelstifferorsofterasthetruckrollsfromside-to-side.Ingeneral,moving
theshockstowardtheoutsidewillmaketheshockstifferandmovingtheshocktowardtheinsidewillmaketheshocksofter.Youwill
needtoexperimentwiththesesettingstondsomethingthatsuitsbothyourtrackanddrivingstyle.Agoodstartingpointistoadjust
therearshocks.Movingtherearshockstowardtheoutsidewillgivemore'bite'(traction)intheturns.However,dependingonhowyou
drive,youmightwanttomovetheshockstowardthemiddle.Thiswillgiveamore'plush'suspension.
n Adjusting Shock Mounting Positions - Front and Rear

l Werecommendinitiallyleavingtheshockmountingpositionsinthefactorylocations.
n Adjusting Droop - Front and Rear
Droopisthedistanceeachwheeldropsfromnormalrideheightwhenthechassisisliftedofftheground.Droopisadjustedoneach
wheelbyturningthegrubscrewineachlowersuspensionarmupordown.Generally,moredroopequalsmorerollwhichequalsmore
traction.Lessdroopequalslessrollwhichequalslesstraction.Droopalsochangesweighttransfer.Experimentationwillbenecessary
toachievethedesiredresponse,dependantonyourtrackconditionsanddrivingstyle.

l Werecommendinitiallyleavingthedroopscrewsinthefactorysetting.
q Todecreasedroop,usea2.0mmhexwrenchtotighten(turnclockwise)thedroop
screwinthetopofeachlowersuspensionarm.Toincreasedroop,usea2.0mmhex
wrenchtoloosen(turncounter-clockwise)thedroopscrewinthetopofeachlower
suspensionarm.
q Removethetwo2.5x12mmRoundHeadscrewsandthetwoatwashersfromthe
upperinnercamberlinks,thenremovethecamberlinksfromtheshocktower.
q Reinstallthecamberlinksintoadifferentholeinthestocktower,eitherhigheror
lower.Installationisthereverseofremoval.
Makesuretoinstalltheatwasherbetweenthecamberlinkandtheshocktower.

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ChASSIS TUNING GUIDE
Continued On Next Page
Changingtheshockoilwillchangethedampingcharacteristicsoftheshocks.Typically,ifyouarerunningonsmoothsurfaces,usea
heavierweightshockoil.Ifyouarerunningonroughsurfaces,usealighterweightshockoil.
n Adjusting Shock Damping - Front and Rear

l Werecommendusingthe25wtshockoilthattheshocksarealreadylledwith.BecausetheVertex RTR 4WD Stadium Truckis
relativelylight,wedon'trecommendusingshockoilanyheavierthan45wt.
q Removethe3x18.5mmRoundHeadscrewfromtheuppershockmount,thenremovetheshock(withtheshockmountingstud
attached)fromtheshocktower.
q Removethe2.5x14mmRoundHeadscrewfromthelowershockmount,thenpull
theshockfromthelowersuspensionarm.
q Removelowerspringholderfromtheshockshaft,thenremovethespringandthe
upperspringholderfromtheshockbody.
q Usingapairofplierswithapieceofclothtoprotecttheshockcap,carefullyloosen
(turncounter-clockwise)andremovetheshockcapfromtheshockbody.
q Pulltheshockshaftallthewaydown,thendraintheexistingoilfromtheshockbody.
Filltheshockbodywithshockoiluntiltheoillevelisjustbelowthetopoftheshock
body,then pumptheshock shaftupand down severaltimes to dissipateany air
bubblesfromtheshockoil.To p offtheshockoillevelifnecessary,beforereinstalling
theshockcap.Tighten the shock cap rmly.
q Reinstalltheshockspringandspringholders,thenreinstalltheshockontothelowersuspensionarmandtheshocktower.Installation
isthereverseofremoval.
TheVertex RTR 4WD Stadium Truckfeaturesa23Tpiniongearthatwillworkwellforbashing.Ifyou'reracingyourVertex RTR 4WD
Stadium Truck,youwillprobablywanttoexperimentwithdifferentpiniongears.Ingeneral,usingasmallerpiniongearwillresultin
quickeracceleration,butslowertopspeed,andusingalargerpiniongearwillresultinfastertopspeed,butsloweracceleration.It'sall
amatterofexperimentingwithdifferentpiniongearstondtheonethatbestsuitsyourtrackanddrivingstyle.
n Adjusting Gearing
TheVertex RTR 4WD Stadium TruckusesaMetric48Pitchpiniongearwitha1/8"(3mm)bore.Thismeansthatmany1/10th
scaleafter-marketpiniongearscanbeused.

l Werecommendinitiallyusingthestock23Tpiniongearalreadyinstalled.
q Removethetwo3x10mmCountersunkscrewsandthesteelmotormountsupport
platefromthebottomofthechassis,thenremovethemotorfromthemotormount.
IMPORTANT:Afterinstallingadifferentpiniongear,youshouldreadjustthegearmeshpriortodrivingyourVertex RTR 4WD
Stadium Truck.Formoreinformation,seepage21.

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ChASSIS TUNING GUIDE
q Usinga1.5mmhexwrench,loosenthegrubscrewinthesideofthepiniongear,
thenremovethepiniongearfromthemotorshaft.
q Installthenewpiniongear,makingsurethatthefaceofthepiniongearisushwiththeendofthemotorshaftandthatthegrub
screwistightenedfirmlyagainsttheflatspotonthemotorshaft.
q Reinstallthemotorintothechassis.Installationisthereverseofremoval.Again,afterinstallingadifferentpiniongear,youshould
readjustthegearmeshpriortodrivingyourVertex RTR 4WD Stadium Truck.Formoreinformation,seepage21.
TheVertex RTR 4WD Stadium Truckfeaturesfrontandrearbevelgeardifferentials.Bothdifferentialsarepackedwithdifferentialgrease
thatworkswellformostdrivingconditions.Youcanmakene-tunedadjustmentstoeachdifferentialbyremovingthemfromthechassis,
openingthemupandchangingthetypeand/oramountofdifferentialgrease.
l Front and Rear Differentials:Addingheaviergrease(orpackingwithmoregrease)willtightenthedifferentialsandaddinglighter
grease(orpackingwithlessgrease)willloosenthedifferentials.IfyourVertex RTR 4WD Stadium Truckfeelsloose(uncontrollable)
duringturns,youcantightenthefrontdifferentialorloosenthereardifferential.IfyourVertex RTR 4WD Stadium Truckispushing
(understeer)duringturns,youcanloosenthefrontdifferentialortightenthereardifferential.
n Adjusting the Differentials - Front and Rear

l Unlessyou'reracing,werecommendusingthegreasethatalreadyllseachdifferential.Ifyou'reracing,localtrackconditionsand
desiredhandlingcharacteristicswilldeterminewhattouse.SeeFront and Rear Differentialsabove.
Becausethedifferentialsarenotsealed,wedon'trecommendusingsiliconedifferentialoiltotunethem.Useonlydifferential
grease.Checkyourlocalhobbyretailerforavailability.
q Removethefour3x12mmCountersunkSelf-Tappingscrewsfromthebottomofthe
chassisthatholdthegearboxinplace,thenremovethetwo3x10mmRoundHead
Self-Tappingscrewsfromthefrontofthechassisbrace.
q Whileliftinguponthefrontofthechassisbrace,pulluponthefrontofthesuspension
assembly,thenpullthesuspensionassemblyoutandoffthechassis.
We detail belowtheremoval of thefrontdifferential.Removingtherear differentialis doneinasimilar manner.Refertothe
ExplodedViewAssemblyDrawingsbeginningonpage24formoredetailedinformation.
Continued On Next Page
n Adjusting Gearing, Continued....
q Removethetwo3x10mmSelf-Tappingbumpermountingscrewsfromthebackof
theshocktower.
q Removethe3x16mmSelf-Tappingscrewfromthecenterofthefrontofthebumper,
thenpullthebumperstraightout.
q Carefullyunsnapthetwooutertie-rodendsfromthesteeringknuckles.