RC 房车调整手册 英文版.docx
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RC 房车调整手册 英文版.docx
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RC房车调整手册英文版
Thissetupguideassumesyouhavesomesortof'standardsetup'tobeginwith.Oneshouldcomewithyourkit.Youcanalsofindstandardsetupsonmanufacturers'websites.
Italsoassumesyourcarisinperfectworkingorder.(Bearingsspinningfreely,nothingdraggingtheground,nobindinginthesuspension,...)
Tires
Tiresarealwaysthefirstelementinsettingupacar.Ifyou'vegottherighttiresandinserts,you're99%there.
Caster
Casterisaverysensitiveadjustment!
Addingorremovingafewdegreesofcastercantransformthesteeringbalanceofacar.
More
Morecasteraidsstability,especiallyathighspeeds.
Morecastergenerallysuitslarge,open,high-speedtracks.
Less
Lesscasterincreasessteeringdrastically.
Steeringfeelsmuchmoredirect,thecarturnstighterandfaster.
Smallamountsofcasteraresuitablefortighttracks.
Toe
RearToe-in
Thisisoneofthemostsensitiveadjustments!
Onedegreegoesalongway.
Stabilizesthecargreatly.Itmakestherearend'stick'.Themoretoe-inyouuse,themoretherearofthecarsticks.Thisisespeciallyapparentgoingintoandcomingoutofturns.
Butmoretoe-inmakesthedifferencebetweenstickingandbreakingloosebigger.
Largeamountsoftoe-in(2.5...3degrees)scruboffalittlespeedinthestraights.
RearToe-out
Reartoe-outisneverused.Itmakestherearofthecarvery,veryunstable.
FrontToe-in
Stabilizesthecarinthestraights,andcomingoutofturns.
Itsmoothesoutthesteeringresponse,makingthecareasytodrive.
Itcanmakethecarturnalittlemoreinthemiddleandexitpartsofaturn.
FrontToe-out
Increasesturn-insteeringalot.
Butcanmakethecarwanderyonthestraights.
Neverusemorethan2degreesoffronttoe-out!
Camber
Camberisbestsetsothetires'contactpatchisasbigaspossibleatalltimes.Sowithastiffsuspensionandfirmtiresyou'llneedlesscamberthanwithasoftsuspensionortireswithbig,flexiblesidewalls.
Ifthetireswearevenlyacrosstheircontactpatches,camberisaboutright.
Pinion/Spur
SmallerGearRatio
(biggernumbermeanssmallerratio)
Morepunchandaccelleration.
Moreruntime.
Lowertopspeed.
BiggerGearRatio
(smallernumbermeansbiggerratio)
Lesspunch,butmoretopspeed.
Lessruntime.
SmallerPinionGear
Smallergearratio
BiggerpinionGear
Biggergearratio
SmallerSpurGear
Biggergearratio
BiggerSpurGear
Smallergearratio
OverallRatio
OverallRatio=(Spur/Pinion)*InternalGearboxRatio
Rollout
(mm/rev)
Rollout=(Pi*TireDiameter)/OverallRatio
Motors
MoreTurns
(e.g.13x2or14x3)
Moreruntime.
Lesspower,andsmootherresponse.
Easytodrive.
LessTurns
(e.g.9x2or8x3)
Lessruntime.
Morepower.
Hardertodrive.
MoreWinds
(e.g.11x4or12x5)
Slightlymoreruntime.
Feelsverysmooth,hasanicepowerband.Veryusefulonslipperytracks.
Moretop-end.
LessWinds
(e.g.12x1or11x2)
Slightlylessruntime.
Feelsverypunchy,buthaslesstop-end.
MoreTimingAdvance
(e.g.6to8mm)
Lessruntime.
Morepunch,andmoretopspeed.
Morewearonthecommandbrushes.
Motorgetshotter.
LessTimingAdvance
(e.g.4to6mm)
Moreruntime.
Easyonthecommandthebrushes.
Lesspunchandtopspeed.
StifferBrushSprings
Morepoweratlowrevs.
Slightlylowertopspeedbecauseofincreasedfriction.
Betterforhighcurrentsandbumpytracks.
SofterBrushSprings
Morepowerathightrevs,butlesspunchy.
Highertopspeed.
Goodforlowcurrentdraw.
TIP:
Yougetslightlymorepunchandaslightlymoreefficientmotorifyouuseaslightlystifferbrushspringonthe+side.
Theeasiestwaytodothisistoholdonelegofthespringwithpliersandgentlybendtheleg5to10degreesmore.
Springs
Stiffer
Stifferspringsmakethecarfeelmoreresponsive,moredirect.Thecarreactsfastertodriverinput
Stiffspringsaresuitedfortight,high-tractiontracks,whicharen'ttoobumpy.
Usually,whenyoustiffenthewholecar,youloseasmallamountofsteering.
Softer
Softerspringsarebetterforbumpyandverylargeandopentracks.
Theycanalsomakethecarfeelasifithasalittlemoretractioninlow-gripconditions.
Springsthataretoosoftmakethecarfeelsluggishandslow.
StifferFront
Thecarhaslessfronttraction,andlesssteering.It'shardertogetthecartoturn,theturnradiusisbiggerandthecarhasalotlesssteeringexitingcorners.
Onveryhigh-griptracks,ifthetrackitselffeelstackyorsticky,verystiffspringsarethewaytogo.
SofterFront
Thecarhasmoresteering,especiallyinthemiddlepartandtheexitofthecorner.
Frontspringsthataretoosoftcanmakethecarhookandspin.
StifferRear
Thecarhasmoresteering,inthemiddleandexitoftheturn.Thisisespeciallyapparentinlong,high-speedcorners.
Butreartractionisreduced.
SofterRear
Thecarhasgenerallymorereartraction,inturnsaswellasthroughbumpysectionsandwhileaccellerating.
Damping
Heavier
Thickeroil(heavierdamping)makesthecarmorestable,andmakesithandlemooresmoothly.
Ifdampingistooheavy,tractioncouldbelostinbumpysections.Thecarwillalsochangedirectionslower.
Softer
Softdampingmakesthecarreactquicker.
Dampingshouldalwaysbeadaptedtothespringratio;thesuspensionshouldneverfeeltoo'springy'ortooslow.
HeavierFrontorSofterRear
Theturnradiusiswider,butsmoother.Thecardoesn't'hook'suddenly.
Thecariseasiertodrive,andhigh-speedsteeringfeelsverynice.
Easytodrive.
SofterFrontorHeavierRear
Thesteeringreactsquicker.
Moreandbetterlow-speedsteering.
WeightDistribution/BatteryLocation
Moretowardsthefront
Morefront-endgrip,allthetime.Butthefrontalsofeelsmoreinert.
Ifyouoverdoit,itfeelslikeyou'reridingonthefronttires,andthereardoesn'tdoanythingbutfollowthefront.
Reartractionisreduced.
Moretowardstherear
Morerear-endgrip,sotherearfeelsmoreplanted.Butifthereardoesswingout,it'susuallyverysuddenandmoreunpredictable.
One-way
Withoutone-way,ortightersetting
Youcanbrakemuchlaterandharder.
Ifyoubrakehardenoughtolockthefrontwheelsup,oralmostlockthemup,thefrontendslides.(Youlosesteering.)
Thecarcouldbeslowerintightturnsiftractionisdecent.
Mucheasiertodriveonslipperytracks.
WithOne-way,orloosersetting
Withaone-way,thecarcantakecornersfaster.Itrollsthroughthemmoreeasilyandfreely.
Brakingcanbetricky,anditcanresultintherearendslidingout.
Aone-way*diff*feelsverynicecomingoutofturns:
it'sverystablewhileaccellerating,anditgivesmoreon-powersteering.
WeightDistribution/BatteryLocation
Moretowardsthefront
Morefront-endgrip,allthetime.Butthefrontalsofeelsmoreinert.
Ifyouoverdoit,itfeelslikeyou'reridingonthefronttires,andthereardoesn'tdoanythingbutfollowthefront.
Reartractionisreduced.
Moretowardstherear
Morerear-endgrip,sotherearfeelsmoreplanted.Butifthereardoesswingout,it'susuallyverysuddenandmoreunpredictable.
UpperShockMountingLocation
MoreInclined
Hasamoreprogressive,smootherfeel.
Morelateralgrip.
Havingallshocksinclinedmakesthecarveryeasytodrive,anditfeelslikethecarhasmoregrip,butit'snotalwaysfast...
LessInclined
(MoreVertical)
Moredirectfeel.
Lesslateralgrip.(side-bite)
Frontmoreinclinedthanrear
Steeringfeelsverysmooth.
Alittlemoremid-cornersteering.
Mountingtherearshocksverymuchuprightcanresultintherearendfeelingunpredictable.Itcanalsomakttherearendjitterinturns.
Rearmoreinclinedthanfront
Feelsagressiveturningin,butformostofthetimethecarhasalittlelesssteering.
Thecarhasalotofsidetractionintherear,andtheturnradiusisn'tverytight.
Anti-Rollbar
Anti-rollbarsarebestusedontrackswheretractionisconsistent.
Addingananti-rollbar,orstiffeningit,reducestractionatthatendofthecar.Soitfeelsliketheoppositeendhasmoregrip.
Ifthetrackissmoothenough,italsomakesthegriplevelfeelalittlemoreconsistent.
Anti-rollbarsreducebodyrollinturns,sotheymakethecarfeelmoredirect,andmakeitchangedirectionquicker.
StifferFront
Ananti-rollbaratthefrontofthecarreduceslow-speedsteering.Theturningradiuswillbelarger,butsmootherandveryconsistent.
Itreduces'hooking'bypreventingfrontendroll.
Thecarwillhavemorereartractioninturns.
StifferRear
Addingananti-rollbartotherearofthecargivesmoresteering.thecarsteerstighter,alsoatlowspeeds.
Onaverysmoothtrack,itcanmakeslidingeasier.
Anti-Squat
More
Moreanti-squatgenerallymakestherearofthecarmoresensitivetothrottleinput.
Thecarhasmoresteeringwhilebraking,andalsoalittlemorepoweringoutofcorners.
Less
Lessanti-squatgivesmoreside-bite,on-powerandwhilebraking.
Itfeelseasiertodriveinlow-gripsituations.
Notethatanti-squatonlyworkswhenyou'reaccelleratingorbraking,itdoesabsolutelynothingwhenyou'recoastingthroughturns.
Theharderyoubrakeoraccellerate,thebiggertheeffectofanti-squatis.
RollCenter/Camberlinks
LongLink
Alonglinkgivesalotofbodyrollinturns.
Itfeelsasisthebodyiswillingtokeeponrolling,untilintheend,thespringspreventitfromrollinganyfurther.
Thecarhasmoregripincorners,especiallythemiddlepart.But:
iftherealreadyisalotoftraction,longcamberlinkscanslowthecardowninturns.
ShortLink
Ashortlinkmakestha
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