Xray NT18 User manual

2
BEFORE YOU START
The NT18 is a high-quality, 1/18-scale nitro touring car intended for persons aged
16 years and older with previous experience building and operating RC model
racing cars. This is not a toy; it is a precision car model. This model racing car is
not intended for use by beginners, inexperienced customers, or by children without
direct supervision of a responsible, knowledgeable adult. If you do not fulfill these
requirements, please return the kit in unused and unassembled form back to the
shop where you have purchased it. Before building and operating your NT18, YOU
MUST read through all of the operating instructions and instruction manual and fully
understand them to get the maximum enjoyment and prevent unnecessary damage.
Read carefully and fully understand the instructions before beginning assembly.
Make sure you review this entire manual, the included engine instructions, and examine
all details carefully. If for some reason you decide the NT18 is not what you wanted or
expected, do not continue any further. Your hobby dealer cannot accept your NT18 kit
for return or exchange after it has been partially or fully assembled.
Contents of the box may differ from pictures. In line with our policy of continuous
product development, the exact specifications of the kit may vary without prior notice.
CUSTOMER SUPPORT
XRAY Europe
Pred Polom 762
91101 Trenčín
Slovakia, EUROPE
Phone: [phone]
Fax: [phone]
Email: [e-mail]
We have made every effort to make these instructions as easy to understand as possible.
However, if you have any difficulties, problems, or questions, please do not hesitate to
contact the XRAY support team at [e-mail]. Also, please visit our Web site
at www.teamxray.com to find the latest updates, set-up information, option parts, and
many other goodies. We pride ourselves on taking excellent care of our customers.
You can join thousands of XRAY fans and enthusiasts in our online community at:
www.teamxray.com
XRAY USA
RCAmerica, 167 Turtle Creek Boulevard Suite C
Dallas, Texas 75207
USA
Phone: [phone] * [phone]
Fax: [phone]
Email: [email protected]
SAFETY PRECAUTIONS
WARNING: This product contains a chemical known to the state of California to cause
cancer and birth defects or other reproductive harm.
When building, using and/or operating this model always wear protective glasses
and gloves.
Take appropriate safety precautions prior to operating this model. You are responsible
for this model‘s assembly and safe operation! Please read the instruction manual before
building and operating this model and follow all safety precautions. Always keep the
instruction manual at hand for quick reference, even after completing the assembly.
Use only genuine and original authentic XRAY parts for maximum performance. Using
any third party parts on this model will void guaranty immediately.
Improper operation may cause personal and/or property damage. XRAY and
its distributors have no control over damage resulting from shipping, improper
construction, or improper usage. XRAY assumes and accepts no responsibility for
personal and/or property damages resulting from the use of improper building
materials, equipment and operations. By purchasing any item produced by XRAY,
the buyer expressly warrants that he/she is in compliance with all applicable federal,
state and local laws and regulation regarding the purchase, ownership and use of the
item. The buyer expressly agrees to indemnify and hold harmless XRAY for all claims
resulting directly or indirectly from the purchase, ownership or use of the product. By
the act of assembling or operating this product, the user accepts all resulting liability.
If the buyer is not prepared to accept this liability, then he/she should return this kit in
new, unassembled, and unused condition to the place of purchase.
Failure to follow these instructions will be considered as abuse and/or neglect.
In line with our policy of continuous product development, the exact specifications of the kit may vary. In the unlikely
event of any problems with your new kit, you should contact the model shop where you purchased it, quoting the part
number. We do reserve all rights to change any specification without prior notice. All rights reserved.

3
IMPORTANT NOTES – GENERAL
• This product is not suitable for children under 16 years of age without the direct supervision
of a responsible and knowledgeable adult.
• Carefully read all manufacturers warnings and cautions for any parts used in the
construction and use of your model.
• Assemble this kit only in places away from the reach of very small children.
• First-time builders and users should seek advice from people who have building experience
in order to assemble the model correctly and to allow the model to reach its performance
potential.
• Exercise care when using tools and sharp instruments.
• Take care when building, as some parts may have sharp edges.
• Keep small parts out of reach of small children. Children must not be allowed to put any
parts in their mouth, or pull vinyl bag over their head.
• Read and follow instructions supplied with paints and/or cement, if used (not included in
kit).
• Immediately after using your model, do NOT touch equipment on the model such as the
engine and muffler, because they generate high temperatures. You may seriously burn
yourself seriously touching them.
• Follow the operating instructions for the radio equipment at all times.
• Do not put fingers or any objects inside rotating and moving parts, as this may cause
damage or serious injury as your finger, hair, clothes, etc. may get caught.
• Be sure that your operating frequency is clear before turning on or running your model,
and never share the same frequency with somebody else at the same time. Ensure that
others are aware of the operating frequency you are using and when you are using it.
• Use a transmitter designed for ground use with RC cars. Make sure that no one else is
using the same frequency as yours in your operating area. Using the same frequency at
the same time, whether it is driving, flying or sailing, can cause loss of control of the RC
model, resulting in a serious accident.
• Always turn on your transmitter before you turn on the receiver in the car. Always turn off
the receiver before turning your transmitter off.
• Keep the wheels of the model off the ground when checking the operation of the radio
equipment.
• Disconnect the battery pack before storing your model.
• When learning to operate your model, go to an area that has no obstacles that can
damage your model if your model suffers a collision.
• Remove any sand, mud, dirt, grass or water before putting your model away.
• If the model behaves strangely, immediately stop the model, check and clear the
problem.
• To prevent any serious personal injury and/or damage to property, be responsible when
operating all remote controlled models.
• The model car is not intended for use on public places and roads or areas where its operation
can conflict with or disrupt pedestrian or vehicular traffic.
• Because the model car is controlled by radio, it is subject to radio interference from many
sources that are beyond your control. Since radio interference can cause momentary loss
of control, always allow a safety margin in all directions around the model in order to
prevent collisions.
• Do not use your model:
- Near real cars, animals, or people that are unaware that an RC car is being
driven.
- In places where children and people gather
- In residential districts and parks
- In limited indoor spaces
- In wet conditions
- In the street
- In areas where loud noises can disturb others, such as hospitals and
residential areas.
- At night or anytime your line of sight to the model may be obstructed or
impaired in any way.
To prevent any serious personal injury and/or damage to property, please be
responsible when operating all remote controlled models.
IMPORTANT NOTES – ELECTRICAL
• Insulate any exposed electrical wiring (using heat shrink tubing or electrical tape) to
prevent dangerous short circuits. Take maximum care in wiring, connecting and insulating
cables. Make sure cables are always connected securely. Check connectors for if they
become loose. And if so, reconnect them securely. Never use R/C models with damaged
wires. A damaged wire is extremely dangerous, and can cause short-circuits resulting in
fire. Please have wires repaired at your local hobby shop.
• Low battery power will result in loss of control. Loss of control can occur due to a weak
battery in either the transmitter or the receiver. Weak running battery may also result in
an out of control car if your car‘s receiver power is supplied by the running battery. Stop
operation immediately if the car starts to slow down.
• When not using RC model, always disconnect and remove battery.
• Do not disassemble battery or cut battery cables. If the running battery short-circuits,
approximately 300W of electricity can be discharged, leading to fire or burns. Never
disassemble battery or cut battery cables.
• Use a recommended charger for the receiver and transmitter batteries and follow the
instructions correctly. Over-charging, incorrect charging, or using inferior chargers
can cause the batteries to become dangerously hot. Recharge battery when necessary.
Continual recharging may damage battery and, in the worst case, could build up heat
leading to fire. If battery becomes extremely hot during recharging, please ask your local
hobby shop for check and/or repair and/or replacement.
• Regularly check the charger for potential hazards such as damage to the cable, plug,
casing or other defects. Ensure that any damage is rectified before using the charger

4
R/C & BUILDING TIPS
• Make sure all fasteners are properly tightened. Check them periodically.
• Make sure that chassis screws do not protrude from the chassis.
• For the best performance, it is very important that great care is taken to ensure the free
movement of all parts.
• Clean all ball-bearings so they move very easily and freely.
• Tap or pre-thread the plastic parts when threading screws.
• Self-tapping screws cut threads into the parts when being tightened. Do not use excessive
force when tightening the self-tapping screws because you may strip out the thread in the
plastic. We recommended you stop tightening a screw when you feel some resistance.
• Ask your local hobby shop for any advice.
Please support your local hobby shop. We at XRAY Model Racing Cars support all local hobby
dealers. Therefore we ask you, if at all possible, to purchase XRAY products at your hobby
dealer and give them your support like we do. If you have difficulty finding XRAY products,
please check out www.teamxray.com to get advice, or contact us via email at info@teamxray.
com, or contact the XRAY distributor in your country.
IMPORTANT NOTES – NITRO ENGINES
• Always test the brakes and the throttle before starting your engine to avoid losing control of
the model.
• Make sure the air filter is clean and oiled.
• Never run your engine without an air filter. Your engine can be seriously damaged if dirt and
debris get inside the engine.
• For proper engine break-in, please refer to the manual that came with the engine.
• Do not run near open flames or smoke while running your model or while handling fuel.
• Some parts will be hot after operation. Do not touch the exhaust or the engine until they
have cooled. These parts may reach 275°F during operation!
IMPORTANT NOTES – NITRO FUEL
• Handle fuel only outdoors. Never handle nitro fuel indoors, or mix nitro fuel in a place
where ventilation is bad.
• Only use nitro fuel for R/C models. Do not use gasoline or kerosene in R/C models as it
may cause a fire or explosion, and ruin your engine.
• Nitro fuel is highly inflammable, explosive, and poisonous. Never use fuel indoors or in
places with open fires and sources of heat.
• Always keep the fuel container cap tightly shut.
• Always read the warning label on the fuel container for safety information.
• Nitro-powered model engines emit poisonous vapors and gasses. These vapors irritate eyes
and can be highly dangerous to your health. We recommend wearing rubber or vinyl gloves to
avoid direct contact with nitro fuel.
• Nitro fuel for RC model cars is made of the combination of the methyl alcohol, castor or
synthetic oil, nitro methane etc. The flammability and volatility of these elements is very
high, so be very careful during handling and storage of nitro fuel.
• Keep nitro fuel away from open flame, sources of heat, direct sunlight, high temperatures,
or near batteries.
• Store fuel in a cool, dry, dark, well-ventilated place, away from heating devices, open
flames, direct sunlight, or batteries. Keep nitro fuel away from children.
• Do not leave the fuel in the carburetor or fuel tank when the model is not in use. There is
danger that the fuel may leak out.
• Wipe up any spilled fuel with a cloth
• Be aware of spilled or leaking fuel. Fuel leaks can cause fires or explosions.
• Do not dispose of fuel or empty fuel containers in a fire. There is danger of explosion.
FIRST AID
• Do not swallow nitro fuel or get it in your eyes. If this happens, immediate measures
should be taken.
• If fuel is swallowed, immediately drink large quantities of water and induce vomiting.
Consult a physician or poison control center immediately.
• If fuel gets into the eyes, rinse them well with water, and then consult a physician
immediately.
• If fuel gets onto the skin, wash it with soap and water well.
again. Modifying the charger may cause short-circuit or overcharging leading to a serious
accident. Therefore do not modify the charger.
• Always unplug charger when recharging is finished.
• Do not recharge battery while battery is still warm. After use, battery retains heat. Wait until
it cools down before charging.
• Do not allow any metal part to short circuit the receiver batteries or other electrical/
electronic device on the model.
• Immediately stop running if your RC model gets wet as may cause short circuit.
• Please dispose of batteries responsibly. Never put batteries into fire.

5
SYMBOLS USED
TOOLS REQUIRED
INCLUDED
EQUIPMENT REQUIRED INCLUDED IN #38 0921
Hobby Knife Side Cutters Needlenose Pliers Curved Scissors Hole Reamer
1:1
L=R
1
CA
2x
C
Self-tapping screws cut threads into the parts when being tightened. Excessive force may permanently damage
parts when tightening screws. It is recommended to stop tightening when the part is attached or when some
resistance is felt after the threaded portion enters the plastic.
Overtightened
CORRECT WRONG
The threads are stripped.
Micro ServoReceiverTransmitter
Engine + Muffler
Receiver Battery Switch with
Cables
Battery Charger Transmitter
Batteries
CA GlueLexan Paint Fuel Glow Plug
Igniter
Hudy Start-Box
#10 4300
(Typically AA type)(Ni-MH
recommended)
Differential Assembly
Tool
Phillips Screwdriver 1.5mm Allen Wrench
Assemble as
many times
as specified
(here twice)
Cut off
remaining
material
Cut off
remaining
material from all
plastic parts.
Cut off
shadded
portion
Ensure smooth
non-binding
movement
Apply instant
glue
Pivot ball
type used
Pay attention
here
Assemble in
the specified
order
Assemble left
and right
sides the
same way
Part bags
used
True-to-scale
diagram
Car
orientation
Tighten screw
gently
2x

6
981316
930812
962030
385060
962030
930812
385060 385000
385000
385000
930610
385000
970040
1. FRONT DIFFERENTIAL
BAG
385000 COMPOSITE GEAR DIFF. + DRIVESHAFT PINION GEAR
385060 GEARBOX CASE
930610 BALL-BEARING MR106ZZ 6x10x3 (2)
930812 BALL-BEARING MR128ZZ 8x12x3.5 (2)
962030 WASHER S 3x6x0.3 (10)
970040 O-RING 4x1 (10)
981316 PIN 3x16 (10)
01

7
1. 2. 3.
ASSEMBLED VIEW
NOTE
ORIENTATION
NOTE
ORIENTATION
SAME
LENGTH
LR
CUT OFF CUT OFF
2x
4x
981316
P 3x16
962030
S 3x6x0.3 930812
BB 8x12x3.5

8
4. 5. 6.
ASSEMBLED VIEW
ASSEMBLED VIEW
LONG
SHORT
NOTE
ORIENTATION
ORIENTATION
NOTE
ORIENTATION
930610
BB 6x10x3
970040
O 4x1

9
02
981316
930812
962030
385060
962030
930812
385060 385000
385000
385000
930610
385742
970040
2. REAR DIFFERENTIAL
BAG
385000 COMPOSITE GEAR DIFF. + DRIVESHAFT PINION GEAR
385060 GEARBOX CASE
385742 SPUR GEAR „H“ 42T / 48
930610 BALL-BEARING MR106ZZ 6x10x3 (2)
930812 BALL-BEARING MR128ZZ 8x12x3.5 (2)
962030 WASHER S 3x6x0.3 (10)
970040 O-RING 4x1 (10)
981316 PIN 3x16 (10)

10
1. 2. 3.
ASSEMBLED VIEW
NOTE
ORIENTATION
NOTE
ORIENTATION
SAME
LENGTH
LR
4x
CUT OFF CUT OFF
2x
981316
P 3x16
962030
S 3x6x0.3 930812
BB 8x12x3.5

11
LONG
SHORT
NOTE
ORIENTATION
NOTE
ORIENTATION
4. 5. 6.
ASSEMBLED VIEW ASSEMBLED VIEW
SHORTER LONGER
930610
BB 6x10x3
970040
O 4x1

12
906262
387400
382101
381120
387400
387400
905208
905206
387400
382101
905206
905262
383200
905206
389995
930610
382200
930610
385200
981208
3. REAR SUSPENSION
BAG
381120 NT18 ALU CHASSIS - CNC MACHINED 7075 T6
382101 SET OF SUSPENSION ARMS, LOWER + UPPER (2+1+1) - HARD
382200 COMPOSITE SUSPENSION BLOCK, L+R (2)
383200 SET OF LINKAGES + BALL JOINTS
385200 COMPOSITE DRIVE SHAFT - SET (2)
387400 SET OF COMPOSITE PIVOT BALLS
389995 INNER WHEEL ADAPTORS, F+R
905206 SCREW PHILLIPS 2.2x6 (10)
905208 SCREW PHILLIPS 2.2x8 (10)
905262 SCREW PHILLIPS 2.5x12 (10)
906262 SCREW PHILLIPS FH 2.5x12 (10)
930610 BALL-BEARING MR106ZZ 6x10x3 (2)
981208 PIN 2x8 (10)
03

13
NOTE ORIENTATION
OF ALL PIVOT BALLS
1. 2. 3.
SAME
LENGTH
LEFT LOWER ARM
RIGHT LOWER ARM
LR
2x
2x
CHECK
A
A
A
A
B
B
981208
P 2x8 AB

14
A
A
A
A
NOTE ORIENTATION
OF ALL PIVOT BALLS
DOWNSTOP SCREWS
ARE IN LAST BAG
LR
B
B
TECH TIP ADJUSTABLE DOWNSTOPS 4. 5.
REMOVE DOWNSTOP PIN
THREAD SET SCREW
RIGHT LEFT
RIGHT LEFT
901304
SB M3x4 AB

15
ALIGN TAB AND SLOT
BEFORE TIGHTENING SCREW
TIGHTEN SCREW,
THEN LOOSEN A LITTLE BIT
CUTAWAY ASSEMBLED VIEW
L=R
2x
ORIENTATION
6. 7. 8.
TIGHTEN
GENTLY
905206
2.2x6
930610
BB 6x10x3
905206
2.2x6

16
2x
C
C
389356
2.5x12
389344
2.2x8
9. 10. 11.
ASSEMBLED VIEW
TIGHTEN
GENTLY
MAKE SURE ARMS
MOVE FREELY
905208
2.2x8
905262
2.5x12
C

17
ASSEMBLED VIEW
906262
2.5x12

18
905210
387400
383200
383200
387400
905208
384110
382610
905262
905206
387400
382101
905206
389995
930610
382200
930610
385200
981208
382101
387400
906262
905206
384140
385513
386410
970025
906256
910256
4. FRONT SUSPENSION
BAG
382101 SET OF SUSPENSION ARMS, LOWER+UPPER (2+1+1)-HARD
382200 COMPOSITE SUSPENSION BLOCK, L+R (2)
382610 ADJUSTABLE TURNBUCKLE 37MM
383200 SET OF LINKAGES + BALL JOINTS
384110 BRAKE DISK
384140 BRAKE DISK COLLAR (2)
385200 COMPOSITE DRIVE SHAFT - SET (2)
385513 ALU MAIN DRIVESHAFT NT18
386410 RADIO PLATE & STANDS
387400 SET OF COMPOSITE PIVOT BALLS
389995 INNER WHEEL ADAPTORS, F+R
906262 SCREW PHILLIPS FH 2.5x12 (10)
905206 SCREW PHILLIPS 2.2x6 (10)
905208 SCREW PHILLIPS 2.2x8 (10)
387400
04
905210 SCREW PHILLIPS 2.2x10 (10)
905262 SCREW PHILLIPS 2.5x12 (10)
906256 SCREW PHILLIPS FH 2.5x6 (10)
910256 SCREW PHILLIPS FH M2.5x6 (10)
930610 BALL-BEARING MR106ZZ 6x10x3 (2)
970025 O-RING 2.5x1 (10)
981208 PIN 2x8 (10)

19
1. 2. 3.1.
SAME
LENGTH
LR
2x
CHECK
NOTE ORIENTATION
OF ALL PIVOT BALLS
DO NOT USE DOWNSTOP
PIN ON LOWER ARMS
LEFT LOWER ARM
RIGHT LOWER ARM
A
A
B
A
A
B
2x
981208
P 2x8 AB

20
TECH TIP4. 5.
LR
A
A
A
B
B
A
ADJUSTABLE DOWNSTOPS
RIGHT LEFT
RIGHT LEFT
REMOVE DOWNSTOP PIN
THREAD SET
SCREW
DOWNSTOP SCREWS
ARE IN LAST BAG
ORIENTATION
NOTE ORIENTATION
OF ALL PIVOT BALLS
901304
SB M3x4
AB

21
6. 7. 8.
2x
CUTAWAY ASSEMBLED VIEW
ALIGN TAB AND SLOT
BEFORE TIGHTENING SCREW
TIGHTEN
GENTLY
TIGHTEN SCREW,
THEN LOOSEN A LITTLE BIT
ORIENTATION
905206
2.2x6
930610
BB 6x10x3
905206
2.2x6