nxt A-0810 A-0820 User manual

A-0810
A-0820
A-0830
NXT GasTruck Kit with Bushings/Bearin gs
NXT Racer GasTruck Kit with Bearings
NXT Graphite Plus GasTru
ck Kit with Bearings
OWNER•&
MANUAL
~ Carefully read throu gh all in structions to familiarize y ours elf with the parts, construction,
tuning tips, and techniques ou tlined in this manual. Being able to grasp the ove rall design
of your NXT 1/ 10 -scale gas- pow ered truck be fore co nstruction will ens ur e a s mooth
asse mb ly.
C1E Take your time and pay close att ention to detaiL Keep thi s manual for future refe ren ce.
TEAM LOSI, INC., CHINO, CA 91710 PIN aoo-o123
MA DE INTHE UNITED STATES OF AMERICA
scan courtesy of Vintagelos i. com

WELCOME NXT OWNER!
Thank you for choosing the NXT truck as your vehicle to enjoy the exciting world of gas· powered, all- terrain racing. The · xr is the
result of hundreds of hours worth of computer-aided design and on-track testing by our engineers and development team . Needless
to say, you will soon come to appreciate that the NXT represents the latest in technolog} and meets the unique demand s of gas·
powered, oiT-road racing.
Since gas-powered models te nd to r equire greater mechanical and tuning ability, il is i mportant that you read through this manua l
co mpletely bef01e beginning assembl y. A little ext ra ti me now will save building time und help get your oe'" truck running sooner.
You
wi ll fi nd that our un i qu e bag-by- bag assembly is bo th q ui ck and easy to fo ll ow. You will also notice that we h ave included a
separate
lip section along w ith helpf ul hints t hro ughout th is manua l to help you tune your NXT and maxin1ize your enjoyment of this
ki t.
Once again, thank yo u for making a wise choi ce ... the NXT.
TEAM LOSI
1. INTRODUCTION
NXT COMPLETED KIT DIMENSIONS
Front Width: 12-3/4 " Rear Width: 12-3/4" Height: 6"
Length: 16-112"
Wheel base: 11-l/4" All dimensions at ride height. Weight will vary depending on accessories.
NOTES & SYMBOLS USED
'it.!' iii'
Thi 10 is a co mmon figure n um ber fow1d nl the beginning of
each ne'' illustration thro u ghout the manual.
0 tep I. Each s tep throughout the entire manual has a check
box to
the len of it. As you co mpleteeach step, mark the box with
a check.
lf vou ne ed to take a br eak and return to building at a
later
um e you will be able to locate the exact s tep where you left
off.
•NOTE: This is a common note. It is used to call attmtion to specific
detailr of a ttrtain step in the as se mb ly.
& IMPORTANT NOTE: Even if yo u are fam il i ar with
Tean1 Losi kits,
be sw·e a nd pay at t ention to these notes. They
point out very importa nt details during the assembly process. Do
not ignore these notes!
>-<> This wren ch designates a performance lip. These tips
are not necessary, but can improve the performance of y our
i\lXT truck.
In il lustrations wh ere it is important to note which
direction parts are pointing,a helm et like this one w ill be included
in
the illustration. The hel met 'vill always f ace the fr ont of the c ar .
Any reference to the rig ht or l eft s id e w il l re late to the direction of
the helmeL
KIT/MANUAL ORGANIZATION
cun·ent st eps can be illustrat ed m ore clearl y.
For your conven ience, an actual size hnrdwar e identification
guide is included with each step. To check a part , ho ld il against
the silhouette until t he correct part is identified. ln so me cast!~
extra hardware has been supplied for parts tha t ma y be easy to
lose.
The
molded parts in the NXT are manufactured to demand-
ing tolerances. When screws are tightened to the point of be i ng
snug, the parts are held flfiTIJ y in place. For this reason it is very
in1portant that screws not be overtightened in any of the plastic
parts.
To i
nsure th at parts are no t lost during construction, it is rec-
o mm en ded that you work over a towel or mat to prevent parts
fr om ro ll ing away.
IMPORTANT SAFETY NOTES
I. Se lect an area for assembly that is away from the reach of
small children. 17te paris in tile kit are smalland ca n be swallowed by
children , c ausing choki11g and possihle internal illjury.
2. The shock fluid and greases supplied s hould be kept out of
children's rea ch. Thty were not intended for human consump tion!
3. Extrcise care when using an:; hand tools. s harp instruments,
or power tools during construction.
4.
Corejitlly read allmanufactum:f wamings ond c autions for an y
glues, f
ue l, or paints tha t may be used for assembly and operating
pur poses.
5. Cas powered vehicles should not be operated indoors.
6. Be careful when handling y our truck afier it has been run
for any period of time . The engine and man y parts can get ex-
tremely hot during operation.
The NXT kit is composed of diiTerent bags marked A through F.
Each bag con tains aU of the partsnecessary to co mplete a particu-
lar section of the J~,"XT truck. Some of these bags hav e subassem-
bl y bags within them. It isessential that you open only one bag at TOOLS REQUIRED
a time and follow the correct sequence, otherwise you may face Team Losi has supplied all Allen wrenches and a special wrench
difficulties in finding the rig ht par t. It is helpful to read through that is needed for assembly and adjustments. The following com -
the instructions for an entire ba g pri or to starting asse mb l y. K ey mon tools wi ll also be required: Small natb l ade sc rewdriver ,
numbers (in pare ntheses) h ave bee n assigned to each part an d Phillips scr ewd r iver , need le nose pliers, regular pliers, scissors, or
remain the same t hr oug hout the manua l. In some ill us tr a ti ons, ot h er body cutt i ng /trimming tools. 3/16", 1/4". 5/ 16", and 3/8"
parts which have alr ea dy b ee n installed are not sh own so that th e nut drivers are optiona l.
i

RADIO/ELECTRICAL
A suggested radio layout is pro vided in this manual. Your high perf ormance RIC center should be consulted regardingspecifics on
radio/electrical e quipment .
HARDWARE IDENTIFICATION
When in question, use the hardware identification guide in each step. For screws, the prefix number d es ignates the screw s iz e and
number of threads per inch (i.e., 4·40 is 41'4 screw with 40 threads per inch of length). The fraction fo ll owing designates the length of
the threads for c ap head screws, and the overall length for flathead scre ws. Bearings and bushings are referenced by the inside
diameter x outside diameter. Shafts
and pins are diameter x length. Wa shers are described by inside diameter or the screwsize that
wi ll pass through the inside diameter. E- el ips are sized by the s ha ft diameter that they arc attached t o.
FUEL
Th e fu el used to power the NXT truck is a special blend of oils and nitro. Thisfuel is highly fl ammabl e and should be treated as such.
Be s
ur e to read any warnings and ca utions that ma y appear on the packaging of the fuel. Becau se of the e xhaust fumes that are
produced from nmning any gas·powered vehicle, the NXT shOldd not be operated indoors. Be careful when handling your truck
while the engine is runnin
g. Th e exhaust f um es from the tuned pipe can cause irritation and btu·ni•'S of the eyes. Never point the
exhaust pipe
wwa rds yo ur fac e. I know this sounds stupid, but w e'v e a ll had it happen to us and it really isn't a pleasant experience.
Th ere ar e several differem brand s of fuel ava il able for the gas ·powered engines. We have found that the O'Donnel and Blue
Thunder fuels are more reliable and perform better than the other s. It is not recommended that you usc a model airplane or model
helicopter
fu el in yo ur N XT truck. The fuels for model airplanes and helicopters do not have the pr oper rypes. or content of oil in
them. Model
car s have a much mor e restricted air fl ow over the engine,so the oils that are used in the fu el fo r model cars help to cool
the engin
e. Using a model airplane fu el ma y cause the engine to run hollerthan desired.
FUEL BOTTLE
You will ne ed some sort of a fuel botlle in order to fill the tank in y our NXT with fue l. Your local hob b) sh op should have fuel bottles
available.
STARTERS
If y ou will be installing an engine that is not equipp ed with a pu ll -start, you will ne ed to have so me sort of an ele ct ric starter in order
to start the engine.
There are several hand-held electric starters ava il able on the mark eL Ther e are also a few manufa ct urers that
pr oduce starter boxes. A st arter box is easier to use, but is usually mor e expensive. When attemptingto start the engine in your NXT
truck with an el ec tric starter, make ce rtain that the engine is being turned the correct direction. Turning the engine over the wrong
dir
ec tion will cause the engine to run backwards.
GLOW IGNITER
You wi ll also need a glow plug igniter in order to st art the engine in yo ur NXT truck. There is a wide var iety of glow plug igniters
available.
Che ck with y our local ho bb y sbop.
TABLE OF CONTENTS
1. INTRODUCTION .......... .. ...................................... .... . .. ... i 2. BAG A ............................................................... .. ........ 1·4
Co mpleted Kit D im ensions .............................. .. .......... i 3. BAG B ........... .. ............................................................ 5·8
Notes & Symbols.......................................................... i 4. BAG C ....................................................................... 9-17
Kit Manual
Org amzation ......................................... .. .... i 5. BAG D .................................... .. ............................... 18·23
Important Safe ty Notes .. . .. .. ... .. .. .... .. .. .. ..... .. ... .. ... .. .. ... i 6.BAG E ............................................. .. ...................... 24·27
To ols Requtred ...................... .. ........... .. ........ .. ........ .. .... i 7.BAG F .................................................
.. ....................... 28
Radio/Eiectncal .. ............................. .. ...........................ii 8. Engine Installation................................................... 29·37
Hardware Identification . .... .......... .. .................. .. ...........ii 9. Radio Installation ........................................ .... ........ 38·46
Fuel................ .. ... .. .................. .. ........ .. ............. .. .......... ii 10. Final Assembly........................................................ 47 ·48
Fuel Bo ttle ................................................................... ii 11 . Final Checklist.............................................................. 48
Starters ........................
.. ....................... .. ............. .. ....... if 12.Tips from the Team ............................................... .. 49·51
Glow Ig niter . .. ... .. ....... .. ................... .. ............. .. .... .... ii 13. Spare parts .............. .. ............................................. 52- 55
Tto mL osi IS co nt i nu ally c han g in g a ruJ impr ov i ng dai gns ; thrr ifo rt, til t atluolf!ort ma y opp((J rs li g lltl y differen t than lit e il/u.stralcd part. 11/u malioiiS of part.r and assembli es may be
s lightly drsw rt ttlto rnhan « ptrtmro t dttails.
ii
sc an co urt esy ofVint ag elos i. com

BAGA
O mnnmlllllllllllli l
0 Step 1. Insert a 4--40 x 3/4" cap-head screw (I) through the
top middle hole on each side
of the front shock tower (2).Thread
a top shock mount bushing
(3) onto each ofthe two screws (I).
0 Step~ - lnsert aU~" ball stud (4) into the inside hole of the
two camber holes on the bottom of the shock tower (2). Mount
the ball studs (4) from the sameside ofthe shock tower (2) as the
screws (I) on both sides
of the shock tower (2). Secure the ball
studs (4) with 4-40 locknuts (5).
U!.l'!i¥1
0 Step 3. Secure the front shock tower (2) to the front bulk-
he ad (6) with two ~ ~- 40 x 71 8" cap-head screws (7)asshown. The
screws (7) should exte nd through the front of the bulkhead (6).
Be sure that the shock
mou nt bushings (3) face thecorrect direc-
ti on as shown in Figure 2.
1
Figure 7
Figure 2

BAG A (Continued)
'1' ·
11
11¥
1
ULrn ______ ____,fl) ,
@
0 Step4.Attachlhe front suspensi on arms [l eft (8), right {9)] to
the front bulkhead (6)
by sliding a 1/ 8'' inner front hinge pin (10 )
through the arm (8), (9) and bulkhead (6 ). Center the hinge pin
(
10 ) and secure il with two J/8" E·dips (IJ).
,& IMPORTANT NOTE: Be sure that the arms sweep to the
rear
and the shock mounting area is fa cing up.
0' · '111¥
1
0 Step 5. Attach the front body mount slide (12 ) to lhe front
side
of the front body mount support ( 13 ) by threading two 4-40
x 318" cap·head screws ( 14 ) into the lop hole io the body mow1t
slide { 12 ) ( this hole does not go all the way throu gh ) and Lhrough
Lhe holes in the body mount support (13) as shown.
0 Step 6. Placethe body mowllsupport(13)overthe lwo sc n ~ws
(7}extendingfrom the front of the bulkhead (6) so that the body
mount support ( 13 ) angles forward. Secure the body mount as-
semblywith lwo 4-40 locknuts (5).
WOTE: Assure that the body mount slide (72) angles down and to-
wards tile fron L
Figure 3
Figure 4
2

BAG A (Continued)
Ut.l'iiii
(??) ...... ro - - - -"'n m
@ @ @
D Step 7. Slide a front axle { 15 ) into the right spindle { 16 ) so
that
the hole in theaxle {1 5) lines up with the hole in thespindle
( 16 ).
'WOTE: Spindks are marked willl 'L ' and 'R' to designate left and
rig Itt.
D Step 8. Place th e assembl ed spindle (1 6) and axle ( 15 ) in the
rightspindle carrier (1 7) so tbat the letteron the spindle ( 16 ) faces
up. Insert a
118" x .960" hinge pin ( 18 ) through the spindle car-
rier (17), spindle { 16 ), and axle ( 15 ). Center the hinge pin ( 18 ) in
the assembly and secure it with two 1/8" E-clips (
II ).
D Step9. Ensure that the hingepin{ 18 )iscentered in thespindle
carrier (
17) and thread a 5·40 setscrew (19 ) into the rear of the
front axle (1 5). Tighten the setscrew against th e hinge pin ( 18 )
until
snug .
D Step 1 0. Place a studded baU washer (20} over a 3/8" ball
stud (4) and thread the ball stud into the top hole
of the spindle
carrier (
17 ), as shown, until snug. Thread a 3/16" ball stud { 21 )
into
the spindle from the top until snug.
&. I MPORTANT NOTE: Refer to the illustration and be cer -
tain that the spindle carrier and spindle are assembled correctly
and
th e reference tellers face the correct direction.
D Step I I. RepeatSteps 7-10 for the leftside parts (left spindle
{2 2), left spindle carrier ( 23 ) ).
UH'ii¥1
Db
@
D Step 12. Attach the right spindle carrierassembly to the right
suspension arm
(9) bysliding a 1/8" x.960" binge pin ( 18 )through
the
arm (9) andspindle carrier ( 17 ). Genter the hinge pin ( 18 ) in
the arm (
9} and secure it with two l/8" £-clips ( II ).
&. IMPORTANT NOTE: Make sure that the letter on the
spindle faces up.
D Step 13. Repeat Step 12 for left side.
3
@
Figur e5
Figure 6

BAG A (Continued)
'i[.!'!ifl
ljg
0 Step 1-l. Thread a plastic rod end (24) onto each end of a
1-7/8" turnbuckle { 2.5 ). Tighten both rod ends equally until the
rod is thesamelength as the rod shown in Figure 7
A. Mak e two of
the camber rod assemblies.
"NOTE: One md of the tumbuckle has left htmd threads. 171e included
Team Losi wrend1 can he used 011 /It t lt ex area of the turnbuckle .
0 tep IS. Place a "foam thing" (26) over each of the ball studs
{4) on the spindle carriers ( 17 }, (23) and the shock lower (2) . At-
tach one side of each camber rod assembly from Step 14 to the
ball stud (4) on the shock tower (2) and the other end to the ball
stud (4) on the spindle carrier (
17 ), (23}. Attach a camber rod to
both the left and the right side.
~ Mount all of the camber rods so that the adjustment hex is
to theoutside of the truck. Thi s will make future adjustments much
easier.
'it.!'ii¥
1
0 Step 16. Place the completed front suspension assembly on
the front
of the main chassis (27). Thread two 8-32 x 3/8 " screws
(28) through the two rear holes in the front portion
of the chassis
(27) and into the rear holes
in the front bulkhead (6).
0 Step 17. Align the fro nt bumper. (29) with the two fonvard
holes in the bottom of the chassis (27). Secure the bumper (29) to
the chassis by threading ~'-"o 8·32 x 3/8" screws (28) through the
bumper (
29 ), the chassis (27), and into the for.vard holes of the
front bulkhead {G). Tighten all four screws {28) until snug.
4
r
~ ~
~-- ~ --~
Figure 7
Figure 7A
Figure 8
.,
0
@...
Figure9 ~

BAG B
0 Step 1. Secure the steeringposts { 30 ) to theouter holesin the
front
of the chassis ( '.!7) using two 4-40 x 3/8" Oat ·head screws
(3 1) as shown.
>-<> Amild thread-lock compoundshould beused on all screws
thatare to be threaded into aluminum on this vehicle. Ifa thread-
lock compound isn't used, the vibration from the gas-powered
engine will cause the screws to back ouL
@
0 Step 2. Thread a 3/8" ba ll stud (4) into the outer hole on the
short arm of the steering bellcrank
(3 2) as shown. Tighten until
snug.
Do n ot overllghte n!
0 Step 3. Place a studded ball washer ( 20 ) over ea ch of two
3/ 1 6" ball studs ( 21 ) and thread one into each of the outer holes
in the steeringsector
arm (33} .
.&. I MP ORTANT NOTE: When [he ball studs face up, the
offset hole
in the sector arm should face forward on the left si de
as shown.
0 Step 4. Attach the steering beUcrank (32) to the sector arm
(33) by threading a 4· 40 x 1/ 8" cap-head shoulder-screw (3 4)
through the beUcrank (32) and into the offset hole an the sector
arm
(33) .
0 Step 5. Attach the steering idler arm {35) to lhc sector arm
(33) by threading a 4·40 x 1 /8" cap-head shoul der -screw (3 4)
through the
id ler ann (35) and into the remaining hole in the
sector
ar m (3 3). Tighten U1 e two cap·head shoulder-screws (: -14 ).
>-<> [f the bellcrank or idler arm doesn't rotate fr eely when
the sc rews are tightened, remove the screw and lightly file the
area around the threads on the sector arm. Attach the partagain
and check for free movement. fil e the arm slightly until the parts
rotate eas
ily. Again, it is a good idea to use a mild thread-lock
compound
in th e aluminum sector arm.
0 Step 6. Place the bellcrank (3 2) and idler am1 (35) ove;:r the
steering posts
(3 0) asshown. If you are asse mbli ng a Graphite
Plus kit, you must first install two 3/ 16 " x 51 16 " bearings (1 33)-
one in the top, one in the bottom -into the bellcrank (32) and
the idler arm ( 35 ) as shown in figure IIA.
5
~
I
Figure 70
Figure 77
Gra hite Plus Kit Only
Figrm 71A

BAG B (Continued)
U'·
11
!iif1
I ! t!IUIIIJ
0 Step 7. Thread a plastic rod end ( 24 ) onto each end of a
1 ·7/ 8" turnbuckle ( 25 ). Tighten both rod ends equally until the
rod is the same length as the r od shown in Figure 12A. Make two
of the tie-rod assemblies.
U'·
111
iif
1
0 Step 8. Attach one end of a tie-rod assembly to the ball stud
(21)
on the right side of the sector arm { 33 ) and the other end Lo
the ball stud {2 1) on the right spindle (16}.
0 Step 9. Repeat Step 8 for the left side.
,.._, Mount all of Lhe camber rods so that the adjustment hex is
to the outside of the truck. This will make future adjustments
much easier.
UH'!i¥1
1 ©
@
0 Step 10. Press a rubber tank-mounting grommet { 36 } into
each
of Lhe thcee lar ge holes in the top of the centerchassis brace
(37} as shown. The grommets {36) should be centered, lop·to·
bottom, in the holes of the chassis brace (3 7 ).
Q;==--,--~E=:=;:O
Figure 12A
Figure 73
Figure 14
6

BAG B (Continued)
'i' ·
11
iiif1
@
1-
@ @
0 Step 11. Line up the three posts on the fuel tank{ 38 ) with the
three holes with grommets in the cent er chassis bra ce (37). Install
the fuel tank (38) on the center chassis brace ( 37 ) from the bot - ®-
tom bypressingthe three posts on the t.an k { 38 ) through the three
rubbergrommets { 36 ).
0 Step 12. Place a -t4 washer( 39 ) over each of the tJuee 4-40 x
3/8'' cap-bead screws ( 14 ). Thread a screw (14 ) through each of
the grommets (36) and into the posts in thefuel tank (38). Ho ld
the tank (38) all the way up against the chassis brace(37).Tighten ~
each of thethreescre\vS ( 14 ) until the washer( 39 )justtouches the
grommet ( 36 ).
0'
"NOTE: 17ze scrws should not be tightmed so that the grommet smashes. Figure 75
By tightening tlte screws until the washers just touch the grommets, the
tt.mk will be ''shock mounted. '' Tltis helps to keep dw fuel from foami ng
while running tlu truck.
Ut.i
1iii1
1
0 Step 13. Refer lo figures 16A ru1d 16B. These are full-size
drawings of the steeringservo posts mountedin the two different
configurations. Hold y our serVO up to these diagrams and align
the mountingearson your servo with the holes in the posts. This
will determine how to mount the steeringservo posts ( 40 ).
0 Step 14. Once you have determi ned the mounting position
of the steering servo mounting posts (40), place the posts (40)
into the holes in the chassis (27) so that the posts are offset in the
correct direction from Figure 16A or 16B.
WOTE: If you do not !!ave your radio system yet, or do not kr10w which
servo you will use for steering at this time, mount tlte posts according to
Figure 76A and continue . The direction of the posts ca11 be dtanged once
you have determined which servo you will use.
& IMPORTANT NOTE: The 2nd and 5th hole from the
bottom in the servo mountingposts are largerthan the rest of the
holes. These holes should be positioned closest LO the chassis.
~
Figure 16
7
0
0
0
0
0
0
0
0
0
Figure 7 6A
Posts in ---· ..:. "'_.._
Figure 76B
c
0
0
0
0
0
0
0
;:)