rc car gurc guideide

5/26/2018 Rc Car Gurc guideide

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The RC Car Guide

Buying and Maintaining Your

Remote Control Car


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Table Of Contents

Getting Started In The RC Car Hobby . . . . . . . . . Page 3

Tips n Buying Your !irst RC Car . . . . . . . . . . . . Page "#itro Car or $le%tri% Car& ' Ma(ing The Choi%e . . . Page )RC Car Terms You #eed To *no+ . . . . . . . . . . . . Page ,-$ssential Tips !or RC Car Maintenan%e . . . . . . . . Page /Getting The Most Speed !rom Your RC Car . . . . . Page 03Car Spe%i1i% In1ormation . . . . . . . . . . . . . . . . . . Page 0-RC Ra%ing Competitions . . . . . . . . . . . . . . . . . . Page "-


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Getting Started In The RC Car Hobby

The Radio Control %ar hobby %an be great 1un. You get the 1eel o1dri2ing a %ar or tru%( li(e you %ould ne2er dri2e your real %ar.

Beginners usually begin +ith an ele%tri% RC tru%( or %ar and they lo2ebeing totally in %ontrol o1 a 1ully 1un%tional s%ale model that is ust+aiting 1or your ne4t %ommand.

To enoy this hobby5 it is important to (no+ the 2arious type o1 optionsa2ailable to pursue your hobby. The most popular type o1 R6C %ar isthe 11'Road Buggy. Big tires +ith 7(nobby7 spi(es5 1ull'tra2elsuspension parts and a high ground %learan%e allo+ the o11'roader togo almost any+here. They %ome +ith either t+o'+heel dri2e 89:; or1our'+heel'dri2e 809:;5 and rea%h speeds o1 ,"'3/ mph. n'Road

%ars usually ha2e lo+er ground %learan%es5 sli%(s tires5 aerodynami%bodies5 and are %apable o1 a bit higher speeds.

RC Cars use t+o di11erent (inds o1 energy sour%es to ma(e them go .The sour%e %an be either ele%tri% or 1uel. Cars that run on batterypa%(s are ele%tri% %ars. They use a re%hargeable #iCad battery pa%( 1orpo+er. They %an run up to ,/ minutes and %an be re%harged in about," minutes. #itro %ars are a%tually po+ered by a small engine thatburns a spe%ial glo+ 1uel. Some %an rea%h speeds o1 o2er "/ mph.

You %an %hoose to ma(e your o+n %ar or to buy one that is ready 1or

get < set < go. These %ars are identi1ied as RTR 8ready < to < run;+hi%h %ome +ith installed radio system or =TR 8=lmost < ready < to =nti'SAuat?. In%reasing the angle gi2es more anti'sAuat5 meaning that the %ar is less li(ely to sAuat 8drop at the rear;during a%%eleration.

&heelbaseis the distan%e bet+een the 1ront and rear a4les o1 the%ar.

Ca%ber' The angle o1 the +heels 8+hen loo(ed at 1rom the 1ront orrear o1 the %ar; relati2e to the 2erti%al is (no+n as Camber. I1 the+heels lean in+ards to+ards the %ar5 the angle is said to be negati2e.I1 they lean out the angle is positi2e5 ho+e2er5 positi2e %amber is

almost ne2er used. Basi%ally5 @ero %amber gi2es the ma4imum 1or+ardtra%tion5 +hilst more negati2e %amber gi2es more grip +hile %ornering.Caster des%ribes the angle 8+hen loo(ing at the 1ront +heels 1rom theside o1 the %ar; bet+een the (ingpin and the 2erti%al. This is part o1 the%ars geometry +hi%h (eeps it tra2eling in a straight line +hen nosteering 1or%e is applied. It is not adustable on all %ars.

"inal Dri'e Ratio' The relationship bet+een the speed o1 the motorand o1 the dri2ing +heels is (no+n as the !inal :ri2e Ratio. !ore4ample5 a 1inal dri2e ratio o1 ).,, means that 1or e2ery rotation o1

the +heel5 the motor rotates )., times. Eo+er the number on the le1to1 the %olon5 the higher is the ratio i.e. more top speed and lessa%%eleration.

T(ea$is the di11eren%e bet+een the heights o1 the +heels relati2e tothe ground 8at the same end o1 the %ar;. e.g. I1 the 1ront le1t is lo+erthan the 1ront right the %ar is said to be t+ea(ed usually %aused by adistorted or t+ea(ed %hassis or uneAual sho%( lengths


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Toe)in is the relati2e angle bet+een the t+o 1ront +heels or rear+heels 8+hen 2ie+ed 1rom abo2e;. I1 the +heels point in+ards8to+ards the 1ront o1 the %ar; it is %alled toe'in5 i1 they point out+ards5it is %alled toe'out.

Body Roll' 9hen people re1er to body roll5 they are tal(ing about the+ay the %ar pit%hes5 either 1rom side'to'side 8+hen %ornering; or1ront'to'ba%( 8+hen bra(ing or a%%elerating;.

Ball differentialis a design o1 di11erential uniAue to model %ars +hi%huse ball bearings instead o1 be2el gears to a%hie2e di11erential speedsat both +heels. It has the e11e%t o1 allo+ing one +heel to slip +hilststill deli2ering po+er to the other. It is also (no+n as limited slipdi11erential.

Belted Tires' Tires +hi%h ha2e a 1lat ring o1 ridged material moldedinto the rubber to pre2ent gro+ing at high speeds5 an e11e%t thatredu%es the tires %onta%t area +ith the tra%(5 resulting in loss o1 grip.These tires are (no+n as Belted Tires.

Co%%utatoris also (no+n as %om 1or short. It is the part o1 therotor 8the part inside +hi%h turns; +hi%h has three %opper %onta%ts 1orthe brushes to run on. *eep %lean and s(im regularly 1or optimale11i%ien%y and motor li1e.

S$i%%ing ' 9hen a motor has been used se2eral times5 the%ommutator %an be%ome de1ormed5 thereby redu%ing the motorse11i%ien%y. S(imming re1ers to pla%ing the motors rotor on a smalllathe and turning'do+n the %ommutator so that the sur1a%e is smoothand round again.

Brushes are the t+o %opper %onta%ts that supply po+er to the%ommutator o1 the motor. These should be repla%ed regularly 1oroptimal e11i%ien%y and motor li1e.

!reAuen%y Clash ' 9hen t+o or more dri2ers in a ra%e are using thesame 1reAuen%y5 %ausing inter1eren%e to one5 or both o1 the dri2ers itis (no+n as !reAuen%y Clash. =ll radio'%ontrolled eAuipment uses%rystals to set the 1reAuen%y +hi%h they operate on. Crystals resonateat a set 1reAuen%y +hen an ele%tri% %urrent is passed through them.They are 2ery deli%ate and should be stored and handled +ith great%are. Crystals %ome in pairs5 one 1or the transmitter +hi%h is mar(edTN5 and one 1or the re%ei2ers +hi%h is mar(ed RN. Ma(e sure you


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use the %orre%t %rystals5 it :$S ma(e a di11eren%e.S*uat' 9hen hea2y a%%eleration is applied to the %ar at relati2ely lo+speed5 the 1or+ard 1or%e e4erted by the motor is resisted by the inertiao1 the %ar. The rear springs store some o1 this energy 8temporarily; by%ompressing5 thus ma(ing the rear o1 the %ar drop. This is (no+n as

SAuat.

Di'e is the opposite o1 sAuat. = %ar di2es +hen it is under hea2ybrea(ing. This is be%ause o1 the momentum the %ar has built'up isbeing resisted by the brea(ing 1or%e o1 the motor. The 1ront slingsstore some o1 that energy by %ompressing5 this ma(ing the 1ront o1 the%ar drop.

Da%+ersabsorb the e4%ess energy stored by the springs +hen the%ar goes o2er a bump. 9ithout dampers the %ar +ould boun%e up anddo+n un%ontrollably.

Gri+ Roll ' 9hen you %ar has ust has so mu%h grip that the body rollis ust too great5 %ausing the %ar to %ompletely roll o2er onto its side itis (no+n as the Grip Roll.

Electronic S+eed Controller 8$SC; is the ele%troni% bo4 that ta(esthe throttle6bra(e signal 1rom the re%ei2er and 1eeds the appropriateamount o1 po+er to the motor.

Glitch' 9hen your %ar ma(es a sudden t+it%h %ausing you to lose

%ontrol5 it is (no+n as the Glit%h. This is usually due to some sort o1ele%tri%al inter1eren%e.

Trans+onder is a small ele%troni% de2i%e +hi%h +hen 1itted to your%ar5 registers that you ha2e %ompleted a lap e2ery time you go pastthe start61inish line. This is ho+ your ra%e result is re%orded5 so dont1orget to 1it it or you +ont register any laps

Tri%is the setting on your transmitter +hi%h determines +hether ornot the %ar runs in a straight line +hen the steering is in its neutralposition.

,nder Steer' I1 +hen ma(ing a turn the %ar 1ails to turn enough5instead pre1erring to go straight. This is %alled under steer. n theother hand i1 +hile ma(ing a turn the %ar turns to mu%h5 ma(ing therear'end slide it is (no+n as the O'ersteer.

Rostru%is a raised plat1orm 1or dri2ers to stand on +hilst ra%ing5 so


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they %an get an ele2ated 2ie+ o1 the tra%(.T- or the To+ -ualifieris the ra%er +ith the 1astest Auali1ying timeo2erall.

BRCAstands 1or British radio %ar asso%iation. It is the go2erning body

o1 the sport in Britain.

Insertsare 1oam or rubber rings pla%ed bet+een the tire and the rimto help the tire (eep its shape.

A+e. is the e4a%t mid'point o1 any gi2en %orner. This is the point+here you should be %losest to the inside o1 the %orner.

#ic$)u+is the angle o1 the 1ront +ishbones to the ground.


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$ssential Tips !or RC Car Maintenan%e

#ot e2eryone is a engineering gee( and e2en i1 one is then sometimesa Aui%( tip or some help1ul ad2i%e is al+ays +el%ome. 9e all +antsome (ind o1 help on ho+ to (eep all un+anted parti%les %oming intoyour %ar engine. = simple remedy is to se%ure your air 1ilter. =notheroption %an be to buy du'bro body %lip retainers and ma(e sure thatthey remain %lipped and do not get loose.

Sometimes your %ar may a%t 1unny. I1 you turn on your %ar and it(eeps steering to one side5 e2en i1 you (eep the +heels straight5 %he%(i1 your %ar has a >steering trim? (nob6+heel6button option. I1 there isnone then may be adusting steering ser2o armature length +ill do thetri%(.

= lot o1 dirt gets a%%umulated under the %hassis and the most to geta11e%ted are the s%re+ heads. To get %lean and spar(ling s%re+ headsunder the %hassis5 spray denatured al%ohol on s%re+ heads and thenpi%( the dirt +ith the help o1 paper %lip. It is an e11e%ti2e +ay to %leanyour s%re+ heads that are pa%(ed +ith dirt enough so that your he4dri2er %an ha2e enough meat to grab on. It is re%ommended to usedenatured al%ohol as it seems to +or( better than the simple green ormotor %leaner.

Compressed air also +or(s better 1or %leaning a1ter a good day o1ra%ing. But an old so%( al+ays does the tri%( to %lean your %arspar(ling and shining. The so1t +ool or %otton +ipes o11 the dirt li(emagi%. But one has to be sure not lea2e any lose threads going intothe %ar. = small painter brush al+ays %leans unrea%hable areas and%leans them gently. To +ipe o1 sti%(y mud under the %hassis or on thebody o1 the %ar using a toothbrush to brush it o11 also helps. But ma(esure not to s%rat%h your %ars paint +ith a too hard brush bristles.

*eeping spare starter batteries and %he%(ing on your t45 r45 and glo+plug starter be1ore going out +ith your %ar also helps. This is a must

+hen your batteries or lights et% ha2e been in use 1or a +hile.

I1 you +ant an alternati2e +ay out to shut do+n the engine in%omparison to du'bro e4haust plug you %an use a pen%il to plug thee4haust to shut do+n the engine 1ast.

$2eryone uses the %able tie tri%( to 1asten the be% plug together sothey do not get dis%onne%ted a%%identally. But this does not seem


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pra%ti%al be%ause e2ery time you ha2e to %ut the tie and use a ne+one to re%harge the %ells. To o2er%ome this problem5 a simple solutionis to repla%e the %able ties +ith the t+ist tie that holds your r4antenna. They are reusable and do the ob per1e%tly.

:rilling your tires on the outside edge in the middle5 instead o1 the rim5(eeps the dirt and other debris out o1 your tires. Theyll stay in balan%ea lot longer as debris gets thro+n out as you dri2e. I1 you drill therims5 then e2ery bit o1 debris +ill stay in your +heel.

To ma(e your o+n %hassis5 a blan( %ir%uit board or an aluminum platedoes a great ob. se 2ise grips to %lamp the original %hassis to theblan( material and drill all your holes by drilling straight through thee4isting holes on the original %hassis. Youll get e2erything to mount upni%e that +ay I1 you are +orried that the %ir%uit board might be toolight. #o 1ret. It is more or less li(e a 1iber glass board and +or(s +ellas top plate on bigger %ars too.

By putting el%ro on the bottom o1 the radio and also at the top o1 thetoolbo45 you %an sti%( the radio to the toolbo4. This +ill ma(e %arryinge2erything easier.

By using " to ,/ ohm %erami% resistors in your starter bo45 you %anma(e your o+n glo+ plug dri2er. 2er time the ,/ ohm may degrade5but adding another in parallel should do the ob.

Sa2ing the paint in a 1ast ra%ing %ar has al+ays been problems. = Aui%(solution to the long standing problem %an be to put tape inside thebody +here things might rub

ne %an spool planetary di11eren%es by ust 1lipping opposing planetgears.

Ma(e a pigtail 1or your %harger +ith all the di11erent %onne%tors youuse. This +ay the TN5 R45 deans5 po+er pole5 and alligator %an be%lipped all in one o11 the %harger.

ne %an put a @iptie on 1or body %lips5 or %lips in general5 and 1or 1ueltan(s as +ell.I1 there is more than one %ar5 that uses a remo2able radio tray li(eHPI5 instead o1 buying sets o1 ele%troni%s5 s+it%hing the radio tray inand out does the tri%(. It ta(es a little more time5 but sa2es money.


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9hen you buy a ne+ %hassis and the old on is not badly damaged i1 atall5 one %an ma(e something out o1 it5 li(e a radio tray or somethingthat may be used as another %ar part. sing old %ar parts is al+ays apart o1 %reati2ity. You may ne2er (no+ i1 you +ould surprise someudge in a parti%ipating %ontest.

Something as simple as a silly putty %an also be%ome a must presen%ein the tool bo4. It ser2es se2eral purposes. It seals the re%ei2er 1romdirt5 dust and moisture. It also insulates and holds %ar +iring in pla%e.It +or(s great as a di11erent lo%(. It also helps ma(e %ustom %hassis. Itreally helps to ma(e mould out o1 the part that needs to be 1it in e2erytime. To add a part5 a thin layer o1 putty %an be laid do+n5 press thepie%e that needs to be 1it in onto the putty. Ei1ting the pie%e o11 +illlea2e an impression o1 the part and its bolt pattern. n%e the %enter ispun%hed and drilled5 the part +ill 1it per1e%t e2ery time.

Putting a small pie%e o1 @ip tie do+n the hole o1 a stripped plasti% part+ill hold the s%re+ in pla%e until it is repla%ed +ith a ne+ one.

To goose the runtime o1 a remote %ontrol %ar a simple tri%( is to%harge the battery pa%( multiple times. I1 you put your remote %ontrol%ar on %harging and ta(e o11 the plug t+o' three times then it mightgi2e you a longer run time be%ause the battery gets %harged all o2eragain. But doing it too may times might pro2e lethal to battery li1e.

Greasing the bearings in RC Cars

Some o1 the models use propelling (ind o1 gears that loo( 1lashy andgi2es the loo( o1 a spa%eship or may be a heli%opter. 9ell this all has%ome into play 1or the reason that these days the udges in the %arra%ing e2ents ha2e started loo(ing 1or ingenuity and %reati2ity o1designs that not only ma(es the models loo( li(e state'o1'art ma%hinesbut designs also add to the speed and enhan%es motor per1orman%es.

But in the end all (inds o1 models reAuire regular maintenan%e.9hoe2er has been into the hobby o1 remote %ontrol %ars or tru%(s hasbeen reAuired to do regular maintenan%e. Those +ith su%h 1lashy %armodels or e4tra %reati2e a%%essories or po+er enhan%ers on theirmodels +ill need to ta(e %are o1 the bearings used in su%h models.Greasing5 oiling5 %leaning5 managing5 sal2aging5 inspe%ting thebearings and to grease the bearings thus be%omes a part and par%el o1regular %ar maintenan%e.

ne needs to ensure that the bearings are 1ully pa%(ed +ith 1resh


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grease 1or longest li1e e4pe%tan%y +hile doing the building5 repairing orre'building the RC %ar or tru%(. =ny used bearing +ill ha2e in%reased edrag %ompared to a ne+ bearing. = bearing in a %lut%h support blo%(turning at ,/5/// rpm5 +ill e4pel more grease than a main sha1tbearing turning at ,// rpm. = bearing +ith no grease +ill ha2e 2ery

lo+ resistan%e....1or a +hileL same 1or an oiled bearing. = greasedbearing that has grease that stays in it5 at an adeAuate amount5 +illout per1orm an improperly lubed bearing5 both in longe2ity andsmoothness.

Most ne+ bearings seem to ha2e a minimum o1 grease and 2ery lightduty grease as +ell. It should be noted that the bearing manu1a%turersha2e no idea +here that bearing +ill end up5 %onseAuently lo+2is%osity grease is used. These 7sto%(7 greases are 7gone7 in someinstan%es or in a matter o1 minutes o1 running. In other areas they arediluted easily +ith 1uel residues and also %leaning 1luids.

Greases %ome +ith di11erent (ind o1 bases. Some use Eithium base+hile others are =luminum o4ide based grease5 Te1lon grease orSili%on Grease. But the ones using =luminum o4ide5 Te1lon5 or Sili%ongi2e out easily on high speed5 high heat and high %entri1ugal 1or%ebearings. ne o1 the reasons behind the same is lo+ 2is%osity 1a%tore4isting +ith %ommer%ial grease.

iling the bearings that ha2e been greased is not really a 2ery goodidea as this +ould tend to +ash out and also lo+er the 2is%osity o1 the

grease in the bearing5 allo+ing it to be e4pelled 1rom the bearing mu%hmore Aui%(ly. iling the bearings +ould ine2itably in2ite dirt also in thema%hine. Eo+ 2is%osity grease5 +hi%h is +hat seems to be in ne+bearings5 +ill tend to brea( do+n to an e2en lo+er 2is%osity +hensube%ted to all o1 this. This %an also lead to dirty residue 7seeping7into the bearing.

9hen bearings need to be totally %leaned5 use o1 mineral spirits isre%ommended. But +hile using sol2ent it should be done +hereappropriate 2entilation is a2ailable and using glasses is alsore%ommended to a2oid sol2ent getting into the eyes. It should be%autioned ne2er to use %ompressed air to blo+ the bearings into highspeeds. This %an %ause the bearings to e4pel the balls as high speedproe%tiles. #e+ bearings should be %leaned +ith a lint 1ree %loth onboth sides be1ore greasing. The e4pelled grease should be dis%arded soas not to %ontaminate grease +ith your bearings.

In the end it is re%ommended to use the type o1 grease 1or an RC %ar


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depending upon its end use. = %ar on o11 road running +ould tend touse high 2is%osity grease +here as one running on %lean en2ironment+ould do good e2en +ith lo+ 2is%osity grease.

Cleaning !our RC Car

$2ery RC Car needs %leaning and the most 1reAuent Auestion is +hat touse. The ans+er to the Auestion about %leaning an RC %ar is to use adenatured al%ohol ta(ing %are that it does not go into any o1 theele%troni%s parts.

sing e4pensi2e stu11 li(e Trinity #itro Blast to %lean your %ar %an gi2egreat results but one %annot a11ord to use it e2ery time a1ter a day atthe tra%(. There are 2arious options a2ailable that are ust as e11e%ti2eand a11ordable. sing al%ohol in a spray bottle and %ompressor %an bean option. ne has to spray it su%h that it soa(s in but not dry up.Then the dirt %an be blo+n a+ay.

RC Blast spray %an lea2e a smell a1ter it dries up so one needs betteroptions to ma(e head+ay in %leaning an RC Car. Ta(e a solution o1simple green and rubbing al%ohol5 Spe%ial engine %leaner air tool andan air %ompressor o1 any (ind. This tri%( %an be done it +ith your air%ompressor as +ell. I1 you go to the tra%(s5 Auite a number o1 peopleare there +ho bring air %ompressors and blo+ o11 their R6C +ith air.=lthough air %ompressors +or(s some+hatL but not as mu%h as the+hole tri%( gi2en here.

=n air %ompressor %an be obtained 1rom any+here5 9al'Mart5 Sams5Sears et% 1or -K or less. RC blast %osts about " dollars. =1ter ,/ %ansone has spent the same amount o1 money on an air'%ompressor. I1you already ha2e one5 you are more than hal1+ay there.

$ngine %leaner has a pressure 2al2e 1or the solution adustment5 ahose to su%( out the solution and a pressure regulator 8trigger; thatyou simply push that gi2es the air. !or the solution ma(e a mi4ture o1", simple green to +ater5 and then add a small amount o1 al%ohol.

Turn the engine sprayer to +here it barely lets out any solution as i1 itis almost %ompletely shut. This +or(s great 1or %onser2ing. It also doesnot ris( any sort o1 problem +ith ele%troni%s. I1 done properly it +or(s+ell +ith #itro all o2er and the $le%tri% buggy as +ell. Ma(e sure toblast the area +ith bearings. Ma(e the +heels spin 1rom the air andthen blast the bearing area again. n%e things are ni%e and %lean5 ta(ethe hose out o1 the solution and ust use air to dry it.


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Ma(e sure not to let any o1 the solution sit on the ele%troni%s. It ta(esust a Aui%( on%e o2er and the stu11 is pretty mu%h %leaned o11%ompletely.

=1ter the +hole pro%edure is o2er5 you +ill be proud to ha2e an RC Carthat loo(s mu%h %leaner.

Maintenance Of Engines

The ele%tri% engines do not ta(e mu%h as mu%h to maintain as%ompared to a #itro. Ta(ing a %loser loo(5 ele%tri% ones are moresimpli1ied. They are easier to start. They are sa1e to set up. More o2erthey ust need %harging o1 batteries and one is ready to hit the tra%(s+ith them.

n the other hand5 #itro engines are little more sophisti%atedma%hines. They need to be pampered and %aoled and to be ta(en %areo1 be1ore and a1ter hitting the tra%(s. The engine reAuires a lot o1initial brea('in time5 tuning and adustments. But surprisingly5 manyRC Car hobbiest pre1er the gas models. They enoy spending time +iththeir engines and tending to them. They lo2e the time and e4perien%eo1 brea(ing in a ne+ engine5 tuning it to their personal pre1eren%es andgetting the most out o1 their engine. This does not ma(e a #itro enginea green monster 1or a ne+bie be%ause a #itro engine has manyad2antages that 1ar out+eigh the maintenan%e and operation %osts.

=lthough the personal tou%h e4perien%e is missing +ith the ele%tri%ones +hi%h are good 1or the ones +ho +ant to ma(e straight head+ayto the tra%(s and pursue it as a part time hobby.

#itro engines reAuire some dedi%ation to learn about their +or(ingme%hanism. ne needs to learn to maintain and ser2i%e a 'stro(eengine5 learn all the parts and per1orm regular %he%(s and repair. #itroengines are some+hat more prone to damage and are mu%h more%ostly to repla%e. 9ith some patien%e5 time and dedi%ation to your RCengine ho+e2er5 you %an be%ome an RC nitro me%hani% in no time atall.

But an ele%tri% system is easy to install and maintain. I1 the batteriesare ta(en %are o1 properly then $le%tri% setups do not reAuire mu%hmaintenan%e. ne %an easily burn the batteries i1 they are notregularly %harged and stored in the proper pla%e under appropriatetemperatures.


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But +ith all that maintenan%e and operations %are that goes a1ter anitro engine5 it surely does produ%e the real po+er and gi2es out thebest per1orman%e on the tra%(s than any o1 the ele%tri% ones. Some%ompanies do produ%e motor engines %laiming to be eAui2alent to the

po+er o1 a nitro engine but thats a rarity. = nitro engine is simply ableto produ%e more po+er5 and 1or as long as it has 1uel. =n ele%tri%motor may start out strong5 but as the po+er dis%harges at anama@ing rateL the nitro engine +ill still be going strong. This is an area+here the a2erage ele%tri% 2ehi%le %annot %ompete +ith a nitro'po+ered 2ehi%le o1 the same si@e and %lass.

Thus it %an be easily summari@ed to the 1a%t that e2en a1ter highermaintenan%e and operations %osts along +ith the noise 1a%tor problemin2ol2ed +ith the #itro engine they gi2e out mu%h greater authenti%e4perien%e o1 running an RC model. They ha2e more po+er and speedplus they also gi2e a greater run time.

!urther5 the ele%tri% engines may ha2e lo+er initial %ost5 lo+eroperating and maintaining %osts +ithout any noise 1a%tor5 they turn outless po+er and speed and gi2e out less run'time. !urther5 theauthenti% 1eel and e4perien%e o1 running RC 2ehi%les is de1initelymissing.

Engine Troubleshooting

There %an be so many problems +ith the engines. Here are some o1the %ommon problems dis%ussed.

&hen the engine is 'ery cool and sto+s after a short run/ 9henthe engine is 2ery %ool is starts immediately but a1ter some turns atmedium speed5 i1 you put on the bra(es or try to run at 2ery slo+speed it stops. It may be be%ause it might not be pulling enough gas.This might be an indi%ation o1 a +orn piston slee2e. This may gi2e youa good engine start 1or about a minute o1 0" se%onds but stops shorta1ter a 1e+ turns. ne %he%( you %an do5 is to turn the 1ly+heel byhand to %he%( ho+ mu%h %ompression is le1t. :o this a1ter it is +armedup and stalling. You should 1eel %onsiderable resistan%e as the pistonapproa%hes T:C 8Top :ead Center;. I1 it %an be turned +ith a 1ingerand runs only 1or a 1e+ se%onds and starts only +hen it is %ooled thensurely piston or the slee2e is to be blamed.

=nother reason %an be that it might not be su%(ing enough gas as ithas no %ompression. The engine has to be running and su%(ing in air


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to su%( the 1uel through the %arburetor. This is not being done be%ausethe %ompression is do+n.

The most important aspe%t is to listen to your engine. Most peopleespe%ially those dri2ing #itro models5 1all into +at%hing the smo(e that

%omes 1rom the e4haust and tuning the engines. But problems +ith%onsistent per1orman%e may arise i1 there is a %hange in type o1 1uel.:i11erent 1uel types may gi2e into di11erent range o1 engineper1orman%es. !urther5 it is not suitable to e4pe%t the engines toper1orm ra%e a1ter ra%e and in di11erent %onditions and e2ery problemto be sol2ed ust by ta(ing a loo( at the smo(e. It is important to learnto (no+ ho+ the engine sounds and responds to the throttle input.

ther than those there %an be many instan%es +hen the engine stallsor simply it +ould not start. I1 the engine is %utting out on 1ast turnsthen its time to gi2e a %he%( to the 1uel system o1 the engine. therproblems that may arise due to 1uel system %an be that engine mightbe running 2ery badly. You +ill need to %he%( out i1 the mi4ture is toolean or too ri%h5 %he%( head pressure5 1uel lines et% and all thingsrelated to 1uel system. = thorough in2estigation and 1i4ing o1 the abo2e%an pro2ide you +ith better engine per1orman%e.

Troubleshooting the fuel syste%

9ith a little a2erage di11i%ulty le2el and spending one our t+o hours onyour 1uel system a lot o1 problems %an be 1i4ed in the 1uel system. This

+ould pre2ent engine stalling and starting problems as +ell.Troubleshooting your engine on a %lear sunny day is al+ays pre1erred.= +et soggy or %loudy day is not best 1or troubleshooting. *eep theinstru%tion manual +ith you along +ith a +ell eAuipped tool bo4 and itshould be easy to 1i4 the problems.

!or any model the pre1eren%e should al+ays be gi2en to the 1uel typementioned in the user manual5 a1ter all5 manu1a%turers (no+ the best.Moreo2er5 one should al+ays use a %onsistent 1uel 1or the engine.Changing 1uel types again and again %an e11e%t the enginesper1orman%e. Che%(ing the user manual 1or right (ind o1 1uel helps outto identi1y i1 the 1uel is +ith too mu%h lubri%ant or too mu%h nitro.

Che%(ing the 1uel mi4ture +hether it is too lean or too ri%h %an alsosol2e the 1uel problem. More in1lo+ o1 1uel ma(es mi4ture ri%her this%an be done by turning the needle 2al2e %ounter %ounter'%lo%(+ise.More in1lo+ o1 air ma(es the mi4ture leaner. !or the optimum engineper1orman%e the right tuning o1 mi4ture is 2ery ne%essary. This also


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gi2es %onsistent engine per1orman%e and ma(es it run smoothly.It is al+ays better to %he%( engine settings a1ter ta(ing it out 1rom thestorage be1ore starting them up. This +ill redu%e the ris( o1 %ausingany possible damage o1 starting them up outright and some potentialbrea(ing that may be lur(ing around the %orners.

I1 you ha2e a pull start engine5 then pulling the string multiple timesli(e a yo'yo might %ause damage to the engine. Gi2e the engine a littlebreathing spa%e a1ter gi2ing it a tug t+o or three times.

It is a good idea to %he%( the 1uel lines and 1uel tan( be1ore ea%hre1uel. This may help in identi1ying in any up%oming %ra%(s orbrea(ages in the 1uel line or any 1oreign parti%les5 %ontaminants or1oam inside the 1uel tan(.

9hen the right 1uel'to'air mi4ture is a%hie2ed5 some problems +ill stille4ist. 9hen the 1uel tan( is 1ull5 it is easy 1or the %arburetor to dra+the 1uel5 but as the tan( empties5 this be%omes more di11i%ult. This isdetermined by the air pressure in the tan(5 and the depth o1 the 1uel inthe tan( itsel1. You %an resol2e this by pressuri@ing the tan( +ithmu11ler pressure.

Smaller 1uel lines are a better option as bending %onstri%ts the 1uel1lo+. Eonger 1uel lines rest against other 2ehi%le parts +hi%h may%ause 2ibration in them to %ause 1ormation o1 bubbles. *eeping the1uel tan( in the 2i%inity o1 the engine al+ays helps. It should al+ays be

mounted on 1oam and thi%( enough to absorb the 2ibration.

In the end a 1ran( opinion 1rom a hobby shop or an old e4pert al+ayshelps. They %an easily help you identi1y small tri%(y problems that maybe o2erloo(ed by you.

Nitro Engine Tuning Ti+s

Tuning o1 nitro engines 1or ra%ing is a 2ery essential a%ti2ity that isreAuired 1or deri2ing optimum per1orman%e o1 the engine. I1 the engineis %leaned as +ell and i1 bottom end and top end are tuned properlythen nitro engines gi2e ma4imum per1orman%e and longer run time.

It is important to %lear the engine o1 debris in preparation 1or ra%etuning. This debris or %ontaminants %ause blo%(ages in air 1lo+ or 1uelinta(e. This may result in too ri%h or too lean mi4ture. Su%h anirregular 1lo+ o1 the mi4ture in to the engine does not gi2e optimumper1orman%e. It may also %ause stalling or starting problems o1 the


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engine.Raising idle by ,60 turn +ill help pre2ent engine 1rom stalling. This isthe idle s%re+ and not the lo+'end needle. #e4t you +ould need to%he%( on the engine temperature. =n engine temperature up to ,"/degrees is reAuired. = ri%h 1uel mi4ture is reAuired. In order to a%hie2e

this ri%hen the top end by a 1ull turn. This should be done by holdingthe %arburetor +ide open and ri%hening should %ontinue till enginenearly stalls. This 1lushes out dirt5 residue5 or a1ter'run oil 1rom the%arburetor and the engine as +ell.

=1ter this5 tuning o1 the bottom end is reAuired. It is essential to geta%Auainted to the sounds and humming o1 the engine in order to tuneyour engine to its best. Eistening to the idle is the 1irst step to+ardtuning the bottom end. I1 the idle slo+s and engine stalls then thebottom'end needle needs to be adusted. But i1 the idle speeds up thenbottom needle needs to be ri%hened out. The engine needle should beset to idle 1or at least one minute be1ore the engine starts to stall.

n%e the idle is %onsistent 1or one minute then the idle s%re+ shouldbe lo+ered as mu%h as possible until engine stalls. Then the idle s%re+should be opened up to the setting o1 one'eighth o1 a turn. $ngineshould be able to idle at least 1orty'1i2e se%onds %onsistently.

=1ter the bottom end is tuned in the top end needs to be tuned. Tobegin tuning the top end 1ull throttle needs to be opened 1or at leastt+o to three se%onds and then the same should be returned to idle

position. The top end needle should be leaned out a1ter listening to theengine until a ni%e %lean sound is heard. Then the %arburetor needs tobe opened to 1ull throttle 1or t+o to three se%onds and %losed 1or thesame amount o1 period. This should be repeated one or t+o times.This should ma(e the engine re2 ni%e and %lean a1ter the repetitions.

I1 the engine hesitates a1ter this it is an indi%ati2e o1 a too leanmi4ture. In order to resol2e this the top needle needs to be ri%hened.= proper tuning o1 the engine should resol2e the problem o1 stalling o1the engine or i1 the engine is gi2ing shorter run times. I1 the problemspersist then trouble shooting o1 the 1uel system may be reAuired. Butthe best shot +ould be to get an e4perts opinion.

Other 0roble%s &ith !our Nitro Car

I1 you nitro %ar engine runs 1ine but does not mo2e that meanssomething in the dri2e train has %ome loose. The 1irst option +ould beto 1irst %he%( the rear +heels. Insure that on the rear +heels that the


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nuts that 1i4 them to the a4le are in pla%e. I1 nuts are loose then thea4le may (eep mo2ing in its pla%e but the gears may nao mesh +ellenough to mo2e.

I1 the rear +heels and their atta%hment to a4le is o(ay then it +ould be

a good idea to %he%( the in+ard dri2e sha1ts to the di11erential %ase. I1there are uni2ersal oints at the di11erential %ase5 they are atta%hed+ith small s%re+ sets. These s%re+ sets might be one o1 the reasonsthat they may gi2e problem +ith the mo2ing o1 the %ar. The set s%re+shold the dri2e oint onto the small stub sha1ts that protrude 1rom the%ase. I1 these sha1ts are loosened then the stub sha1t +ill spin but thedri2e oint +ill not. The set s%re+ +ill need to be on the 1lat portion o1the sha1t to align the same +ith the dri2e oint. To get a%%ess to theset s%re+ it may be reAuired to disassemble the suspension a little.

I1 the problem still persists5 it might be possible that the main gearneeds to be inspe%ted. Inspe%t the main gear to ensure that it is tighton the sha1t. 9hen a slipper %lut%h is loose5 the main gear +ill turn butthe po+er +ill not be trans1erred to the gear bo4. This %an be easilyseen +hen the engine is operating. I1 you 2ie+ that the gears turn butthe sha1t does not then it means that the slipper %lut%h is loose. Themain gear needs to be tightened on the sha1t and the problem +ill besol2ed.

These suggestions +or( best +ith the gas po+ered model %ars. Butthey are not limited to them only. =pplying the abo2e inspe%tion rules

may sol2e problems +ith most o1 the %ars and the +heels +ill be setrolling.

These problems o%%ur mostly +ith gas po+ered remote %ontrol ra%ing%ars. This is due to the reason that the 2ibration o1 the engine tends toloosen the nuts5 bolts or s%re+s o1 the %hassis et%. This loosening %anhappen o2er time and %he%(ing the areas mentioned abo2e +ill a2oidthese problems

It +ould in the best interest o1 the %ar model and 1or the dri2er also toal+ays gi2e a one and hal1 hour inspe%tion to the model a1ter e2ery1our hours o1 run. This maintenan%e al+ays (eeps the model set rightand ready to speed up. sually #itro based models reAuire 1airly highdegree o1 maintenan%e to the 2ehi%le. This is due to the reason that#itro Remote Control %ars %an go ,6)th s%ale o11'road single speeda2erage 3/'0/ MPH. 'Speed a2erages to be 0/'"/ MPH. Tru%(sa2erage "'3" MPH. Speeds %an be 2ariable depending uponen2ironmental %onditions5 motor si@e5 tuning5 gearing5 %lut%h bell si@e5


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et%.So ta(ing %are o1 #itro engines might not be su%h a great tas( but aregular maintenan%e along +ith regular %are +ill do +onders.

RC Nitro Engine 1The Glo( 0lug

#itro engines use a glo+ plug igniter %onne%ted to the battery supply1or starting up. The batteries supply the po+er to glo+ the plug. n%ethe reAuired ignition is pro2ided the glo+ plug +illll %ontinue to glo+e2en though the batteries are dis%onne%ted.

I1 you +ant the nitro engine to tune'in properly it is ne%essary to (no+that the heat o1 the glo+ plug %an alter the %ombustion timing. I1 thisheat is not properly set the engine may ne2er be 1ine tuned. !urther5 aglo+ plug %an burn out prematurely i1 you o2er heat it. They ha2e an

unpredi%table li1e span. It is al+ays sa1er to use the brand themanu1a%turer has spe%i1ied in there guidelines or users manual. This+ay you %an ha2e a glo+ plug +ith a longer li1e span +hose usagepattern is des%ribed and you ha2e ready help to re1er to.

I1 your engine runs 1ine but Auits later on%e it is unhoo(ed 1rom thepo+er plug this means then its time to repla%e the Glo+ plug. But onthe other hand i1 the engines re2s do+n a1ter you remo2e the po+erthen the glo+ plug is 1ine5 the engine needs either more nitro 1uel or ahotter plug. The small s%ien%e behind the +hole game is that a hotterplug +ill typi%ally ad2an%e the ignition point +hile a %older plug +ould

retard it.

*eeping an eye on your glo+ plug +ill help you to understand ho+ youshould adust your %arburetion. Ta(e the glo+ plug out and loo( at the%oil element and i1 the spiral is a little bit pressed and bent it meansthat the engine has too mu%h %ompression. I1 you are ra%ing on a seale2el tra%(5 +ith "D or more nitro this %ould be the main reason.Then you need to %he%( under head shims and insert a tenth. I1 the%oil element has a dull loo(5 as i1 it +ere sanded5 it means that the%arburetion is too lean 8la%( o1 1uel; and you %an damage the engine.

You run the ris( o1 brea(ing the %oil element and ma(ing it 1all do+non the top end o1 the piston5 damaging the piston6slee2e. In this %ase5you should repla%e the old Plug +ith a ne+ plug and ri%hen the HighSpeed needle ,6)th. I1 the thread has a dar( %olor and the plug seems+et5 the %arburetion is too ri%h and the engine isnt running at optimalpo+er. You ha2e to lean the %arburetion5 %losing the High speedneedle. 9hen the %oil element is polished and the spiral does notpresent any imper1e%tions5 your engine %arburetion is most li(ely


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adusted properly.Manu1a%turer models o1 glo+ plugs al+ays %ome +ith help or 1eaturesdes%ribed 1or their glo+ plug +hi%h %omes in handy +hile tuning theengine.

AIR "ITERS

=n air 1ilter is an important %omponent o1 a #itro engine. The engineneeds a mi4ture o1 %lean and unrestri%ted air and 1uel to pro2ide po+er1or the RC 2ehi%le. Sin%e a nitro engine reAuires %lean an unrestri%ted1lo+ o1 air 1or smooth running and more po+er the air 1ilter is the 1irstline o1 de1ense or the 1irst important %omponent that ma(es sure thatthe engine runs to its optimum. =ll RC 2ehi%les ma(e use o1 this de2i%eto deri2e the optimum po+er le2el 1or their engines.

The air 1ilter (eeps a+ay the dirt5 %ontaminants and other debrisgetting into the engine. I1 these 1oreign parti%les enter the engine theymight seriously harm the engine %apabilities and de1initely +ould e11e%tthe per1orman%e o1 the 2ehi%le.

There are three types o1 air 1ilters. Most %ommon o1 them is the !oamair 1ilter +hi%h use 1oam 1ilter oil. These 1ilter oils should be +ithoutsol2ents as 1ilters tend to disintegrate i1 you use 1ilters oils +ithsol2ents in it. Single stage 1oam 1ilters %ontain a single %ore. This %oreis used to 1ilter dust5 dirt and similar %ontaminants. :ual stage 1oam1ilters ha2e t+o le2els o1 prote%tion to pre2ent %ontaminants. The

se%ond %ore is thi%(er and blo%(s smaller parti%les.

Cotton air 1ilters are the most %ommon repla%ements to 1oam air1ilters. They ha2e less air resistan%e as %ompared to 1oam ones. Careis reAuired in %ase o1 %otton air 1ilters so as to not to o2er'saturatethem. It is important 1or the air 1ilter to dry o2ernight.

Paper air 1ilters are not re%ommended 1or o11'road #itro 2ehi%les.These are usually 1a2ored by some o+ners 1or e4tra air1lo+ 1or their2ehi%les.

You need to %lean the 1ilters regularly but sometimes an o2erallrepla%ement might also be ne%essary. !urther5 it is also important to(no+ the 1iner aspe%ts o1 %leaning an RC #itro $ngines air 1ilter.=pplying oil to the air 1ilter in the right manner is also important. TheyreAuire spe%ial air 1ilter oil 1or the same. n%e the air 1ilter ispur%hased or %leaned properly it needs to be se%ured in the rightmanner in it proper pla%e. sually most o1 the air 1ilters stay se%urely


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in their pla%e +here they are designed to be5 but you may need to(no+ ho+ to put a troublesome one in the proper pla%e. =ll along%hoosing a right 1ilter 1or your model is also 2ery important. !or thebest per1orman%e o1 your engine5 ma(ing the right %hoi%e o1 air 1ilter is2ery important.

Cleaning air 1ilters %an sa2e you money but you need to ma(e a %hoi%esometimes 1or their repla%ement. Sin%e they are not a 2ery %ostly parto1 an RC 2ehi%le you %an easily opt 1or a repla%ement i1 maintenan%e isreAuired too o1ten. =lthough a larger or better 1ilter may %ost more butit really depends upon the model you o+n. !oam air 1ilters are themost %ommonly used air 1ilters used in #itro 2ehi%les.

=ir 1ilters are as important to the engine5 as the engine itsel1. 9ithoutan air 1ilter5 or +ithout a %lean one5 your engine +ill Aui%(ly degrade inper1orman%e and be%ome seriously damaged. Ma(e it a part o1 yourregular a1ter'run routine5 to %lean or repla%e your nitro air 1ilters.

General Infor%ation About RC Motors

The single most important thing about motors is that %leaning is thepriority. The best +ay to impro2e the per1orman%e o1 a motor is to(eep it CE$=#. It does not mean to spray it out on%e a month +ithmotor spray5 instead an absolute %leaning is 2ery important. I1 you area serious ra%er %leaning motors means e4tra and 1ree horsepo+er 1orthe engine. This is be%ause it gi2es proper in1lo+ o1 1uel and pre2ents

and %ontaminants or 1oreign bodies 1rom hurting the ma%hine.

Cleaning o1 all %omponents is an important aspe%t. It is 2ery importantto %lean the brushes and the %ommutator sin%e this is +here the po+eris applied. =ny drop in the resistan%e o1 the %onne%tion 1rom thebrushes to the %ommutator +ill be re+arded +ith either an in%rease inpo+er or e11i%ien%y5 or BTH

=llo+ing brush dust to a%%umulate on the brushes and the %om +illadd resistan%e to the %onne%tion o1 the batteries to the motor. =s theresistan%e o1 that %onne%tion is in%reased5 per1orman%e is de%reasedbe%ause some o1 the battery po+er is %on2erted to +hat is %alled I'sAuared'R losses. This results in heat being produ%ed at the brush%onne%tion instead o1 po+er being trans1erred to the %om.

The best +ay to (eep brushes and %om %lean5 +ithout %utting them5 isthe little shaped eraser'loo(ing produ%ts 1rom RPM. se one on boththe brushes and the %om bet+een runs. This (eeps the motor 1resher


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bet+een 2isits to the %om lathe. There is not any real mar(eddi11eren%e bet+een the yello+ one and the bla%( one5 they both seemto do the same thing eAually +ell.

=nother +ay to (eep pea( per1orman%e is to be sure that the %om is

true. This is a%%omplished by regularly %utting the motor on a %omlathe. :oing it about e2ery "',/ runs may seem e4%essi2e but doing itso o1ten5 you +ill only end up ta(ing .//,'.// 1rom the sur1a%e. Sin%eta(ing su%h a small %ut5 the motor %an be re'trued up+ards o1 "times.

Springs are yet another +ay to alter the per1orman%e o1 a motor. In 0'%ell ,6,th s%ale5 it is best to run EIGHT springs. Run a Trinity gold onthe J and a Trinity sil2er on the '. This has pro2en5 a1ter +hatseems li(e months on the dyno5 to be the best %ombination 1or ,6,ths%ale STC* ra%ing. 0'%ell mod 1ollo+s basi%ally the same rules o1thumb 1or springs5 but the timing needs to be adusted 1or ma4imume11i%ien%y as +ell to ta(e 1ull ad2antage o1 +hat the motor %an do.

RC Batteries and Battery Ti+s

I1 someone has been using ele%tri% RC %ar models 1or some time it isessential 1or him to (no+ ho+ to ta(e %are o1 the batteries. They arethe po+er generators 1or these ra%ing models. = little attention andhandling gi2es them better li1e span and more po+er. It is essential tounderstand ho+ to %harge5 dis%harge and ta(e %are o1 them.

It is o1ten assumed that doubling the battery pa%( +ould ma(e the %argo 1aster or gi2e more battery li1e. =%tually5 in %ase o1 RC Cars5 this isnot the %ase. The added +eight +ill neither add speed nor li1e to thebattery. =lso +iring them in series +ould ust in%rease the 2oltage but+ould not a11e%t the %apa%ity. nly some o1 the monster tru%(s aredesigned to run +ith ,0.0 2olts5 the rest are designed to run on .2olts only +ith t+o pa%(s +ired in parallel.

Common %on1usion also pre2ails bet+een the hea2y duty and al(alinebatteries. The user o1ten does not (no+ +hi%h o1 them are better andsupposes that although hea2y'duty are %heaper5 that al(aline lastlonger. =%tually >hea2y duty? are also al(aline batteries. It is ust thati1 any battery is allo+ed to sit 1or some span o1 time5 you +ould be%onsidered lu%(y to deri2e anything out them a1ter that. Manu1a%turersuse the term hea2y duty to denote their bargain brand batteries. Theyalso ha2e premium brand batteries. The di11eren%e in %ost is generallydue to di11eren%e in %ost in produ%ing standard al(aline or o4y'al(aline


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%ells. ther than this the manu1a%turers also %hange their premiumbattery names 1reAuently in +hi%h %ase the a%tual di11eren%e lies onlyin t+ea(ing the o4y'al(aline 1ormula a little bit.

sually most o1 the al(aline batteries gi2e similar per1orman%e and li1e

span regardless o1 the brand. ther than that usage pattern alsodetermines the battery per1orman%e and li1e span. :i11erent usagepatterns in di11erent models gi2e 2aried response 1rom the batteries. I1you are using an ad2an%ed %ontroller to %ontrol your %ar then usingal(aline batteries is pre1erable. I1 a simple %ontroller is used5 than%arbon batteries are su11i%ient.

#iCad and #iMH batteries are the %ommonly used batteries 1or RCmodels. #iCad is usually the one that gi2e more 2alue 1or money +hile#iMH gi2e more %apa%ity that means longer run times. #iMH batteriesare good to %harge at " amp 1or ra%ing %onditions. Charging them athigher amp +ould result in higher a%%eleration but the battery +ould1latten out at the end o1 the ra%e. !or #iCad batteries " amp balan%esbest bet+een top speed and pun%h.

!or storage5 the best option 1or #iCad is to dis%harge them to .K 2oltsand then store them. !or e4ample . 2olt batteries should bedis%harged to ".0 2olts and then stored. I1 these ha2e not been used1or more than a +ee( then it is good to %harge them 1or up to , minuteand then use them. !or #iMH batteries5 thirty per%ent o1 the %hargeshould be put into the pa%( and then stored. :ead batteries should be

maintenan%e @apped on%e and then %y%led on the ben%h a %ouple o1times. I1 the same is done e2ery alternate day it %an help the deadbatteries get some %harge.

Batteries are the mo2ing po+er o1 an ele%tri% RC %ar. I1 proper %are ista(en they gi2e out ma4imum po+er and better run times.

I%+ortant Ti+s "or ,sing !our RC Car

RC hobbyists al+ays +ant to ha2e a great e4perien%e +ith their ne+RC %ar or tru%(. The 1ollo+ing tips +ill ma(e your e4perien%e moreenoyable.

You need to go through the o+ners manuals thoroughly in order topre2ent any inury or damage to ones lo2ingly pur%hased5 ultra highper1orman%e nitro 2ehi%le5. =lthough it is more tempting to s(ip thisstep5 this is probably the single most important thing that you %an do.It +ould be sad to damage to your e4pensi2e RC Car ust be%ause you


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did not go through the users manual. I1 you are ma(ing a signi1i%antin2estment in a 1inely engineered nitro RC 2ehi%le the best +ay toprote%t it is by reading through the instru%tions.

Prepping and painting the body %omes in ne4t. I1 your RC %ar or tru%(

%omes +ith a body that needs to be painted5 then prepping andpainting is something that needs to be ta(en %are o1 as +ell. Initialbrea( in o1 the engine should be done +ith the body shell o11 any+ayin order to insure ma4imum %ooling to the engine. It is important toput the body aside su%h that it +ould not get oily or dirty. I1 body is(ept %lean then prepping +ill be easier later +hen it is getting ready topaint. The %olor or s%heme you use to paint it %an be as uniAue as onesindi2idual %hoi%e. The body shell a%ts as armor to prote%t youre4pensi2e engine and radio gear during use.

Gluing the tires to the +heels is 2ery important. Many RC nitro %arsand tru%(s reAuire the tires to be glued to the +heels. This issomething that some people try to s(ip5 but it is 2ery highlyre%ommended that this should be done +hile the tires and +heels are%lean. n%e they get dirty5 it +ill be 2ery hard to glue them properly.This is a simple step to ensure that all o1 the po+er +ill be transmittedto the ground instead o1 resulting in slippage bet+een the rubber tireand +heel. The tires should be glued to the +heels using hobby grade%yanoa%rylate 8C=; glue. Super Glue is a C= glue5 but it is not usuallyre%ommended using this type o1 C= glue. Hobby grade C= glue +or(sbetter and %an be easily 1ound at a lo%al hobby or arts6%ra1ts supply

stores.

The 1oam air 1ilter needs to be oiled properly be1ore starting theengine5 as it is usually shipped dry to (eep e2erything %lean. ilingensures that dirt +ill sti%( to the oil and be trapped in the 1oam 1ilterelement. Running +ithout the oil +ill result in ine11i%ient 1iltering o1 theair. iling %an be done simply by ust pla%ing se2eral drops o1 light oilon the 1oam 1ilter element. Gently pressing it do+n se2eral times tohelp distribute the oil e2enly through out the 1oam element. I1 toomu%h oil is a%%identally spilled on the 1ilter5 it %an be sAuee@ed out bysimply using a paper to+el or rag. This +ill help sAuee@e out e4%ess oilinto the rag or paper to+el. sing a thi%( oil or grease5 +ill plug up the1ilter and restri%t air 1lo+ to the engine5 there by redu%ing po+er. It+ould probably be best to use an oil spe%i1i%ally designed 1or air 1ilteruse.

The engine should al+ays be run +ith the air %leaner installed. The air1ilter pre2ents harm1ul dirt and 1oreign obe%ts 1rom getting into your


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engine and destroying it. =t those astronomi%al engine speeds o10/5/// RPM5 dirt Aui%(ly ruins the engine. Periodi%ally5 as the 1oam1ilter gets plugged +ith dirt you should remo2e it 1rom the engine and%lean it +ith household dish +ashing liAuid5 Simple Green degreaser5or some other degreaser. :o not use gasoline or other strong sol2ents

as these %ould damage your 1ilter.

=ll engine brea('in re%ommendations should be 1ollo+ed as gi2en inthe o+ners manual. !irst time running o1 a nitro engine largelydetermines ho+ long the engine +ill last and ho+ mu%h po+er theengine +ill produ%e. The engine should ne2er be run 1ull throttle duringbrea( in. Being e4tra gentle during brea( in +ill be re+arded +ithlonger engine li1e and ma4imum po+er later. Eastly the limited slipdi11erential8s; should be %he%(ed and adusted i1 needed.

Brea$ in +rocedure for Nitro Engine

= good brea( in pro%edure is al+ays a treasured (no+ledge 1or ta(ing%are o1 a #itro $ngine. >Heat %y%ling? is one o1 the methods that isgood 1or brea(ing in. Start the engine and let it idle5 a1ter one or t+ominutes 1eel the %ylinder head. It should be hot enough that you arenot able to hold it 1or more than ,/ se%onds. Stop the engine andma(e sure that piston is at the bottom o1 the stro(e. Eet it %ool do+n%ompletely. It should be stone %old. Repeat the pro%edure se2eraltimes5 may be ,/', times. It might seem li(e a tiring pro%edure butone needs to ha2e patien%e. This pro%edure is usually dedi%ated to the

1irst tan( o1 1uel.

#o+ ta(e it out and run it. pen the main needle one 1ull turn. !or thene4t 1our tan(s you should not run more than hal1 throttle and thespeed should be 2aried up and do+n. Eet it also %ool do+n %ompletely.$a%h time you ha2e to ensure that piston is at the bottom o1 the stro(eat the time o1 %ooling. It +ould be a good idea i1 the engine runs at// degree range during this period.

#e4t +ould be 1our more tan(s running up to three'1ourth throttle butthe manner should be same as stated earlier. =1ter this you one %an go+ide open and go in 1or another si4 tan(s. These engines run best at/ to 0/ degrees5 plus a 2isible line o1 smo(e should al+ays be%oming 1rom the e4haust stinger.

I1 you ha2e patien%e and ta(e the time 1or 1ollo+ing this brea( inpro%edure then you +ill be re+arded +ith an engine that is strongerand runs longer than others.


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Some things should be (ept in mind +hile doing the brea('in5espe%ially +ith the heat method. It +ould not be ad2isable to start theengine +ith the ele%tri% starter. Be1ore starting up the engine a ni%esuggestion +ould be to %o2er up the %ooling head +ith something so

the engine heats up properly. This is be%ause +ithout the %o2er theengine may remain %old. Then start the engine and let it run ri%h at 1ullthrottle 1or 'tan(s at a temperature o1 eighty degrees Centigrade.Then t+o more tan(s to run at ninety and one more at hundreddegrees.

=1ter this the engine is almost run'in but you +ill need to 1inish therun'in +ith t+o more tan(s a1ter this. =1ter su%h a patient pro%edurethe %ar +ill be ready to run.

Be1ore starting a brea('in read all the in1ormation a2ailable.In1ormation ne2er hurts5 on the %ontrary it might help. !urther5 be2ery patient +ith the +hole pro%edure o1 brea('in. Start brea(ing'inpatiently. Many people re%ommend using ,/'/D nitro 1or brea(ing

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