Xray RX8 User manual

1

2
BEFORE YOU START
The RX8 is a high-competition, high-quality, 1/8-scale nitro 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 racing
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 fulll 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 RX8, 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 set-up book, and examine all details carefully. If for some
reason you decide the RX8 is not what you wanted or expected, do not continue any further. Your hobby dealer
cannot accept your RX8 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
specications of the kit may vary without prior notice.
SAFETY PRECAUTIONS
WARNING: This product contains a chemical known to the state of California to cause cancer and birth
defects or other reproductive harm.
CAUTION: CANCER HAZARD
Wash thoroughly after using. DO NOT use product while eating, drinking or using tobacco products. May
cause chronic effects to gastrointestinal tract, CNS, kidneys, and blood. MAY CAUSE BIRTH DEFECTS.
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.
• 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 conict with
or disrupt pedestrian or vehicular trafc.
• 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 – 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 motor and
speed controller, 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 ngers or any objects inside rotating and moving parts, as this may cause damage or
serious injury as your nger, 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, ying 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.
FAILURE TO FOLLOw ThESE INSTRUCTIONS wILL BE CONSIdEREd AS ABUSE ANd/OR NEGLECT.
CUSTOMER SUPPORT
XRAY Europe
K Výstavisku 6992
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 difculties, problems, or questions, please do not hesitate to contact the XRAY support team at info@tea-
mxray.com. Also, please visit our Web site at www.teamxray.com to nd 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, 2970 Blystone Lane, Suite 109
Dallas, Texas 75220
USA
Phone: [phone] * [phone]
Fax: [phone]
Email: [email protected]
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 lter is clean and oiled.
• Never run your engine without an air lter. 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 ames 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!

3
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 re. 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 re 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 re. 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 rectied before using the charger 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 nished.
• 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 re.
wARRANTY
XRAY guarantees this model kit to be free from defects in both material and workmanship within 30 days
of purchase. The total monetary value under warranty will in no case exceed the cost of the original kit
purchased. This warranty does not cover any components damaged by use or modication or as a result
of wear. Part or parts missing from this kit must be reported within 30 days of purchase. No part or parts
will be sent under warranty without proof of purchase. Should you nd a defective or missing part, contact
the local distributor. Service and customer support will be provided through local hobby store where you
have purchased the kit, therefore make sure to purchase any XRAY products at your local hobby store. This
model racing car is considered to be a high-performance racing vehicle. As such this vehicle will be used
in an extreme range of conditions and situations, all which may cause premature wear or failure of any
component. XRAY has no control over usage of vehicles once they leave the dealer, therefore XRAY can only
offer warranty against all manufacturer‘s defects in materials, workmanship, and assembly at point of sale
and before use. No warranties are expressed or implied that cover damage caused by what is considered
normal use, or cover or imply how long any model cars‘ components or electronic components will last before
requiring replacement.
Due to the high performance level of this model car you will need to periodically maintain and replace
consumable components. Any and all warranty coverage will not cover replacement of any part or component
damaged by neglect, abuse, or improper or unreasonable use. This includes but is not limited to damage
from crashing, chemical and/or water damage, excessive moisture, improper or no maintenance, or user
modications which compromise the integrity of components. Warranty will not cover components that are
considered consumable on RC vehicles. XRAY does not pay nor refund shipping on any component sent to
XRAY or its distributors for warranty. XRAY reserves the right to make the nal determination of the warranty
status of any component or part.
Limitations of Liability
XRAY makes no other warranties expressed or implied. XRAY shall not be liable for any loss, injury or
damages, whether direct, indirect, special, incidental, or consequential, arising from the use, misuse, or
abuse of this product and/or any product or accessory required to operate this product. In no case shall
XRAY‘s liability excess the monetary value of this product.
Take adequate safety precautions prior to operating this model. You are responsible for this model’s
assembly and safe operation.
Disregard of the any of the above cautions may lead to accidents, personal injury, or property
damage. XRAY MODEL RACING CARS assumes no responsibility for any injury, damage, or
misuse of this product during assembly or operation, nor any addictions that may arise from
the use of this product.
All rights reserved.
QUALITY CERTIFICATE
XRAY MODEL RACING CARS uses only the highest quality materials, the best compounds for molded parts
and the most sophisticated manufacturing processes of TQM (Total Quality Management). We guarantee
that all parts of a newly-purchased kit are manufactured with the highest regard to quality. However, due
to the many factors inherent in model racecar competition, we cannot guarantee any parts once you start
racing the car. Products which have been worn out, abused, neglected or improperly operated will not be
covered under warranty. We wish you enjoyment of this high-quality and high-performance RC car and wish
you best success on the track!
Please note that raw materials such as aluminum, steel, brass, breglass, or carbon bre may
have small scratches on the surface which is a standard characteristic of any raw material.
Scratches on the surface of any materials are NOT considered to be material defects.
Products may potentially have small amounts of corrosion on them. This may be caused by variances in
weather during different times of the year, humidity in the shop or during shipping, and other contributing
factors. Even though we have taken all precautions and protection methods to prevent corrosion, these small
amounts of corrosion (if present) are unavoidable and considered to be acceptable.
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.
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 difculty nding XRAY products, please check out www.teamxray.com to get
advice, or contact us via email at [e-mail], or contact the XRAY distributor in your country.
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 re
or explosion, and ruin your engine.
• Nitro fuel is highly inammable, explosive, and poisonous. Never use fuel indoors or in places with open
res 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 ammability 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 ame, 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 ames, 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 res or explosions.
• Do not dispose of fuel or empty fuel containers in a re. There is danger of explosion.

4
EQUIPMENT REQUIRED
TOOLS REQUIRED
INCLUDED NOT INCLUDED
SyMbOLS USED
XRAY Silicone Shock Oil
Transmitter Steering & Throttle Servos
Receiver & Personal
Transponder
Battery Charger
Wheels & Tires
Starter Box (HUDY #104400)
& Battery Pack
Manifold & Exhaust
Engine
Air Filter & Oil Tire Truer
(HUDY #102003)
Model R/C Car Fuel
(nitromethane)
Threadlock & CA Glue
Glowplug Igniter
HUDY TOOLS
Reamer
(HUDY #107602)
(HUDY #107601)
Wrench Glowplug/Clutchnut
(HUDY #107581)
Phillips 3.5mm
Allen Ball 2.5mm
Slotted Screwdriver 4.0mm
Exhaust Spring / Caster Clip Remover
Allen 1.5 / 2.0 / 2.5 / 3.0mm
Pinion Tool Set
(XRAY #339901)
Flywheel Tool
(HUDY #182010)
Pliers
(HUDY #189020)
Side Cutters
(HUDY #189010)
Hobby Knife
One-Way Lube
(HUDY #106231)
Bearing Oil
(HUDY #106230)
Apply cyanoacrylate (CA) glue
Follow Set-Up Book
Part bags used
Assemble left and right sides the same way
Assemble in the specified order
Pay attention here
Assemble as many times as specified (here twice)
Apply thread lock Number of teeth
Apply oil (may indicate specific type)
Follow tip here
Cut off remaining material
Scale
Ensure smooth non-binding movement
3.0 mm
Turnbuckle Tool 3.0mm
(HUDY #181030)
To ensure that you always have access to the most up-to-date version of the
XRAY Set-up Book, XRAY will now be offering only the digital online version
at our Web site at www.teamxray.com. By offering this online version instead
of including a hardcopy printed version in kits, you will always be assured of
having the most up-to-date version.
WHEELBASE
Apply grease
Use pliers
Graphite Grease
(HUDY #106210)
Fibre Tape (HUDY #107870)
Double-sided Tape
Scissors
(HUDY #188990)
Lexan® Paint
Bodyshell
Receiver Battery Pack

5
bAG
CUTAWAY VIEW
ONE-WAY LUBE
ONE-WAY LUBE
STEP DETAIL
NOTE
ORIENTATION
OIL
OIL
1. FRONT ONE-WAy & REAR SOLID AXLE
345070
345011
345024
968140
345070
968120
345001 FRONT ONE-WAY - HARD COATED + LIGHTWEIGHT ADAPTERS
345011 FRONT ONE-WAY AXLE - BLACK COATED
345024 COMPOSITE FRONT ONE-WAY AXLE PULLEY 24T
345070 FRONT ONE-WAY AXLE OUTDRIVE ADAPTER - HUDY SPRING STEEL™ (2)
345071 FRONT ONE-WAY AXLE OUTDRIVE ADAPTER - LIGHTWEIGHT (2) (OPTION)
345800 COMPOSITE BELT PULLEY COVER SET
345100 REAR SOLID AXLE - SET
345110 REAR SOLID AXLE SHAFT
345148 COMPOSITE REAR SOLID AXLE PULLEY 48T
968120 C-CLIP 12 (10)
968140 C-CLIP 14 (10)
980324 PIN 3x24 (10)
980324
345110
345148 968120
345800
01
968120
C 12
980324
P 3x24
968140
C 14

6
DOWNSTOPS
bAG
2. REAR SUSPENSION
2.7mm
44mm
NOTE ORIENTATION
INITIAL SETTING
ASSEMBLED VIEW INITIAL SETTING
ASSEMBLED VIEW
ASSEMBLED VIEW
DETAIL
Tighten gently
Right thread
Left thread
2.7mm
2x
2x
2x
During initial assembly, tighten each
composite hex nut until the pivot ball
starts to bind, then loosen slightly.
Verify that the pivot balls move freely.
PIVOT BALLS MUST
MOVE FREELY
Tighten composite hex nuts
using HUDY
tool #107581
Follow the TECH TIP on page
34 to install the pivot balls
When you use INNER position on the
upright, use SHORTER ball joint.
(INITIAL SETTING)
When you use OUTER position on the
upright, use LONGER ball joint.
The length of the ball joint depends on the
upright position. See page 7, step 3.
902308
SH M3x8
902306
SH M3x6
901410
SB M4x10
901306
SB M3x6
345310 306219
901316
343311
343111 342070
337250
372651
901410
342630
345360-O
901303
962121
941218
342070
941218
903256
345370
343285
902306
343150
901306
343130
337253 345280
902308
343193
343111
306219 COMPOSITE SET OF SERVO SHIMS (4)
337250 STEEL PIVOT BALL 8.4 MM (2)
337253 COMPOSITE ADJUSTING NUT M10x1 (4)
342070 COMPOSITE SET OF BUSHINGS (2)
342630 ADJ. TURNBUCKLE L/R 20 MM - HUDY SPRING STEEL™ (2)
343111 SUSPENSION ARM FOR GRAPHITE EXTENSION - REAR LOWER
343130 COMPOSITE SUSPENSION ARM REAR UPPER
343150 UPPER BALL JOINT 5.8MM - SHORT & LONG (2+2)
343193 STEEL EXTENSION FOR SUSPENSION ARM - REAR LOWER (2)
343285 PIVOT BALL 6.8MM (2)
343311 COMPOSITE UPRIGHT REAR FOR AERO DISC
345280 WHEEL SPRING (2)
345310 REAR WHEEL AXLE - HUDY SPRING STEEL™
345360-O ALU REAR WHEEL LOCK - SWISS 7075 T6 - ORANGE (2)
345370 GRAPHITE REAR AERODYNAMIC DISC 2.2MM - SET
372651 PIVOT BALL UNIVERSAL 4.9 MM - HUDY SPRING STEEL™ (2)
941218 HIGH-SPEED BALL-BEARING 12x18x4 RUBBER SEALED (2)
901303 HEX SCREW SB M3x3 (10)
980322
962121
962120
901306 HEX SCREW SB M3x6 (10)
901316 HEX SCREW SB M3x16 (10)
901410 HEX SCREW SB M4x10 (10)
902306 HEX SCREW SH M3x6 (10)
902308 HEX SCREW SH M3x8 (10)
903256 HEX SCREW SFH M2.5x6 (10)
962120 WASHER S 12x15x0.5 (10)
962121 WASHER S 12x15x1.0 (10)
980322 PIN 3x22 (10)
02.1
3x6
3x8
3x8
4x10

7
REAR TRACK-WIDTH
REAR ROLL CENTER
COMPOSITE SET OF BUSHINGS
1mm
0.5mm
1mm
Concentric
INITIAL SETTING
INITIAL POSITION
INITIAL SETTING
INITIAL SETTING Eccentric
DETAIL
2.3mm
2.1mm
2x
2x
2x
2x
IN OUT
1+1 0.5
1+0.5 1
1 1+0.5
0.5 1+1
0 1+1+0.5
SHIM SHIM
Centered
2mm
Tighten gently
Tighten fully
6mm
2. REAR SUSPENSION
Bearing oil
Bearing oil
When using eccentric bushings, both
bushings must be in same position.
OPTION:
#345290 Alu shim 12x15x1.0mm (4)
NOTE ORIENTATION
903256
SFH M2.5x6
962120
S 12x15x0.5
962121
S 12x15x1.0
941218
BB 12x18x4
901303
SB M3x3
306219
SHIM 3x6x2
901316
SB M3x16
980322
P 3x22
OIL
OIL
ASSEMBLED VIEW
ASSEMBLED VIEW
ASSEMBLED VIEW
ASSEMBLED VIEW

8
WHEELBASE
REAR ROLL CENTER
REAR TRACK-WIDTH
DETAIL
bAG
Before tightening the screws, insert the brake disk between the brake pads.
Evenly tighten the screws fully (CW), and then loosen both screws by one turn (CCW).
The brake disk should have a small amount of play between the brake pads.
Composite set of bushings
Use 0mm suspension holders for initial assembly
INITIAL SETTING
2mm
BRAKE MATERIAL FACE TOGETHER
2. REAR SUSPENSION
BEARING
OIL
344180
965090
903416
345320
903308
901303
981208
902318
357210
342317
903412
901405
344110
342316
345450
940508
344041
940508
344051
902310
341102
347321 343050
903308
342317
302080
342316
344141
344130
345820
345510
903412
342070
941218
940817 345100
343022
343055
940815
343013
302080 COMPOSITE CASTER CLIPS SET 4+3+2+1 MM (2)
341102 CHASSIS 5MM - CNC MACHINED - SWISS 7075 T6
342070 COMPOSITE SET OF BUSHINGS (2)
342180 COMPOSITE LOWER SUSP. ARM CLIPS (2)
342316 COMPOSITE REAR UPPER SUSP. ECCENTRIC BUSHING (4)
342317 COMPOSITE REAR LOWER SUSP. ECCENTRIC BUSHING (4)
343013 BULKHEAD REAR RIGHT FOR WIRE ANTI-ROLL BAR
343022 BULKHEAD REAR LEFT FOR WIRE ANTI-ROLL BAR
343050 COMPOSITE REAR BULKHEAD COVER
343055 COMPOSITE REAR LOWER SUSP. ARM HOLDER
344041 BRAKE CAM POST - STEEL
344051 COMPOSITE BRAKE UPPER PLATE + CLAMPS FOR REAR ANTI-ROLL BAR
344110 VENTILATED BRAKE DISC - PRECISION-GROUND
344130 BRAKE PAD SET
344141 BRAKE DISK ADAPTER - LIGHTWEIGHT - SWISS 7075 T6
344180 BRAKE DISK SPRING (2)
345320 REAR DRIVE SHAFT 61MM - HUDY SPRING STEEL™
345450 PUR® REINFORCED DRIVE BELT REAR 8.0 x 204 MM
345510 2-SPEED SHAFT 8MM - SUPER LIGHTWEIGHT - HUDY SPRING STEEL™
345820 COMPOSITE 2-SPEED BELT PULLEY 20T - CENTER
347321 REAR UPPER INNER PIVOT PIN WITH FLAT SPOT (2)
357210 LOWER INNER PIVOT PIN F/R (2)
901303 HEX SCREW SB M3x3 (10)
901405 HEX SCREW SB M4x5 (10)
902310 HEX SCREW SH M3x10 (10)
902318 HEX SCREW SH M3x18 (10)
903308 HEX SCREW SFH M3x8 (10)
903412 HEX SCREW SFH M4x12 (10)
903416 HEX SCREW SFH M4x16 (10)
940508 HIGH-SPEED BALL-BEARING 5x8x2.5 RUBBER SEALED (2)
940815 HIGH-SPEED BALL-BEARING 8x14x4 RUBBER SEALED (2)
940817 HIGH-SPEED BALL-BEARING 8x16x5 RUBBER SEALED (2)
941218 HIGH-SPEED BALL-BEARING 12x18x4 RUBBER SEALED (2)
965090 E-CLIP 9 (10)
981208 PIN 2x8 (10)
903412
SFH M4x12
902318
SH M3x18
940508
BB 5x8x2.5
02.2

9
NOTE ORIENTATION
COMPOSITE SET OF BUSHINGS
INITIAL SETTING
2. REAR SUSPENSION
BEARING
OIL
BEARING
OIL
BEARING
OIL
BEARING
OIL
INITIAL SETTING
Place tab in this notch
AB
REAR BELT TENSION ADJUSTMENT
TO TIGHTEN REAR BELT
Rotate BOTH rear composite bushings in
arrow direction (A)
TO LOOSEN REAR BELT
Rotate BOTH rear composite bushings
in arrow direction (B)
DETAIL
Tighten setscrew
onto at spot
THREADLOCK
The brake disc must freely
move between the brake pads.
If not, loosen the two screws
holding the brake pads.
ASSEMBLED
VIEW
ASSEMBLED VIEW
965090
C 9
901405
SB M4x5
941218
BB 12x18x4
940815
BB 8x14x4
940817
BB 8x16x5
NOTE ORIENTATION
NOTE ORIENTATION
Both bushings must be
in same position
8x16x5
8x14x4

10
REAR CAMBER RISE
REAR ROLL CENTER
DETAIL
STEP DETAIL
DETAIL
Tighten fully
setscrew M3x6 onto atspot
2x
2mm
903308
SFH M3x8
903308
SFH M3x8
902310
SH M3x10
903412
SFH M4x12
940508
BB 5x8x2.5
903416
SFH M4x16
901303
SB M3x3
981208
P 2x8
BEARING
OIL
3x8
3x8
4x16
4x16
4x12
4x12
INITIAL SETTING
2. REAR SUSPENSION
Use 0mm suspension holders for initial assembly
NOTE ORIENTATION
Composite set of bushings

11
REAR ANTI-ROLL BAR
902310
SH M3x10
DETAIL
DETAIL DETAIL
CENTER
2. REAR SUSPENSION
bAG
25.3mm
BEARING
OIL
02.3
901305
902310
302291
341380
902310
344051
902310
901304
341360 902314
343069
902310
343082
343071
901303
901303
940508
343481-K
903308
302080
343030
343458
347330
302663
302653
341331
343481-K
333461
341370
302080 CASTER CLIPS SET 4+3+2+1 MM (2)
302291 STEEL STEERING BUSHING (2+2)
302653 BALL END 4.9MM WITH THREAD 6MM (2)
302663 COMPOSITE BALL JOINT 4.9MM - OPEN - V2 (8)
333461 COMPOSITE ANTI-ROLL BAR BALL JOINT 4.9 MM (4)
341331 COMPOSITE REAR BODY HOLDER - HIGHER
341360 COMPOSITE REAR BODY HOLDER SCREW (2)
341370 COMPOSITE REAR BODY HOLDER ARM
341380 COMPOSITE REAR BODY CENTERING PLATE
341381 GRAPHITE REAR BODY CENTERING PLATE - SET (OPTION)
343030 GRAPHITE REAR BRACE
343069 STEEL BUSHING (2)
343071 BELT TENSIONER SET - STEEL
343082 GRAPHITE SHOCK TOWER REAR
343458 ANTI-ROLL BAR REAR 2.8 MM
343481-K ALU CUTTED ANTI-ROLL BAR COLLAR - BLACK (2)
344051 COMPOSITE BRAKE UPPER PLATE + CLAMPS FOR REAR ANTI-ROLL BAR
347330 REAR BODY HOLDER ARM PIN (2)
940508 HIGH-SPEED BALL-BEARING 5x8x2.5 RUBBER SEALED (2)
901303 HEX SCREW SB M3x3 (10)
901304 HEX SCREW SB M3x4 (10)
901305 HEX SCREW SB M3x5 (10)
902310 HEX SCREW SH M3x10 (10)
902312 HEX SCREW SH M3x12 (10)
902314 HEX SCREW SH M3x14 (10)
903308 HEX SCREW SFH M3x8 (10)
901303
SB M3x3
901304
SB M3x4
940508
BB 5x8x2.5
Eliminate the play of the bars with the anti-roll bar bushings. Make sure to set
the wire is in center and that it moves freely after tightening the bushings.
When the bars are set, verify that both sides move at the same time. If they do, the
bars are set up correctly. If not, make sure that both downstops are the same and that
the bar wire is at.
If the sides still does not move at the same time, adjust
the length of the bar holders.
343456 REAR ø2.6mm OPTION
343458 REAR ø2.8mm STANDARD
343460 REAR ø3.0mm OPTION
REAR
ANTI-ROLL BARS
3x3
3x3
3x4
3x4

12
REAR BODY MOUNT
2x
2x
DETAIL
DETAIL
DETAIL
INITIAL
SETTING
INITIAL SETTING
(STEP )
2mm
2mm
Distance according to
bodyshell
INITIAL SETTING
SHIMS (STEP )
NOTE ORIENTATION
901305
SB M3x5
902310
SH M3x10
902310
SH M3x10
902314
SH M3x14
902314
SH M3x14
903308
SFH M3x8
2. REAR SUSPENSION
3x10 3x14

13
3. REAR TRANSMISSION
bAG
➊
➋NOTE
ORIENTATION
➌
➍
➎
ASSEMBLED VIEW
Use the belt pulley cover 18T
with hole diameter of 10mm
7.5mm
8mm
➌
STEP DETAIL
STEP DETAIL
➊
NOTE ORIENTATION
1ST GEARS
335557 COMPOSITE 2-SPEED GEAR 57T (1st) OPTION
335558 COMPOSITE 2-SPEED GEAR 58T (1st) OPTION
335559 COMPOSITE 2-SPEED GEAR 59T (1st) STANDARD
335560 COMPOSITE 2-SPEED GEAR 60T (1st) OPTION
2ST GEARS
335553 COMPOSITE 2-SPEED GEAR 53T (2nd) OPTION
335554 COMPOSITE 2-SPEED GEAR 54T (2nd) OPTION
335555 COMPOSITE 2-SPEED GEAR 55T (2nd) STANDARD
335540 COMPOSITE 2-SPEED GEAR BOX SHOE SET
335555 COMPOSITE 2-SPEED GEAR 55T (2nd) - V3
335559 COMPOSITE 2-SPEED GEAR 59T (1st)
335582 SPRING FOR GEAR BOX - HARD (2)
345521 CARRIER FOR 2-SPEED GEAR (2nd) - SMALL - SWISS 7075 T6
345531 ALU DRIVE FLANGE WITH ONE-WAY BEARING - SMALL - 7075 T6
345571 ADAPTER 2-SPEED SMALL
345592 ALU 2-SPEED SHAFT SHIM (2)
345800 COMPOSITE BELT PULLEY COVER SET
345838 COMPOSITE SIDE BELT PULLEY 18T o8 - REAR
901305 HEX SCREW SB M3x5 (10)
908262 HEX SCREW SOCKET HEAD CAP M2.5x12 (10)
903306 HEX SCREW SFH M3x6 (10)
950812 BALL-BEARING 8x12x3.5 FLANGED (2)
965070 E-CLIP 7 (10)
980314 PIN 3x14 (10)
981210 PIN 3x10 (10)
983404 ROLLER PIN 4x4 MM (2)
901305
950812
965070
983404
981310 980314
345800
908262
345592
335559 345531
903306
335555
950812
345521
903306 345571
983404
335540 345838
965070
335582
345800
18
980314
P 3x14
965070
C 7

14
TRANSMISSION
2-SPEED TRANSMISSION
901305
SB M3x5
908262
SCH M2.5x12
983404
RP 4x4
903306
SFH M3x6
965070
C 7
981310
P 3x10
345592
SHIM 8x10x1.5
950812
BB 8x12x4
➊
➊
➋
➋
➌
➍
➍
➎
➎
Setscrews must NOT
protrude
Top of screw head
should be level with
hole bottom edge
NOTE
ORIENTATION
NOTE
ORIENTATION
2ND GEAR
2ND GEAR
1ST GEAR
1ST GEAR
NOTE
ORIENTATION
NOTE
ORIENTATION
NOTE
ORIENTATION
➊
➋
➌
Do not overtighten gap-setting
setscrews. Only tighten until roller
pins contact the center hub.
Use white paint to color the top of ONE screw head. This will allow you to identify the two
different screws - one white, one dark - when you are adjusting the shift point.
ONE-WAY LUBE
SHIFT-POINT SCREW
SHOE-GAP
SETSCREW
BEARING OIL
BEARING OIL
Use HUDY Reamer #107600 to slightly chamfer
the edges on all 3 holes for screws from inside.
Use HUDY Reamer #107600 to slightly chamfer
the edges on all 3 holes for screws from inside.
ASSEMBLED VIEW
3. REAR TRANSMISSION
55
55
59
59

15
902308
SH M3x8
ASSEMBLED VIEW
ASSEMBLED VIEW
4. FRONT SUSPENSION
bAG
PIVOT BALLS MUST MOVE FREELY.
During initial assembly, tighten each composite hex nut
until the pivot ball starts to bind, then loosen slightly. Verify
that the pivot balls move freely.
Tighten the composite hex nuts
using HUDY tool #107581
Tighten
gently
Tighten
fully
THREAD
LOCK
GRAPHITE GREASE
(HUDY # 106210)
Tighten the screw fully when
the pin is installed.
DETAILSTEP
2x
2x
2x
04.1
901303
SB M3x3
980262
P 2.5x12
337250 STEEL PIVOT BALL 8.4 MM (2)
337253 COMPOSITE ADJUSTING NUT M10x1 (4)
342070 COMPOSITE SET OF BUSHINGS (2)
342113 SUSPENSION ARM FOR WIRE ANTI-ROLL BAR - FRONT
342131 COMPOSITE SUSPENSION ARM FRONT UPPER - SHORT
342190 GRAPHITE EXTENSION FOR FRONT SUSP. ARM (L+R)
342214 COMPOSITE STEERING BLOCK FOR AERO DISC - RIGHT
342224 COMPOSITE STEERING BLOCK FOR AERO DISC - LEFT
342290 GRAPHITE EXTENSION FOR STEERING BLOCK (2)
342412 COMPOSITE FRONT ANTI-ROLL BAR HOLDERS
342440 ANTI-ROLL BAR FRONT FEMALE - HUDY SPRING STEEL™
342450 ANTI-ROLL BAR FRONT MALE - HUDY SPRING STEEL™
345210 FRONT WHEEL AXLE - HUDY SPRING STEEL™
345220 FRONT CVD DRIVE SHAFT 71MM - HUDY SPRING STEEL™
345230 DRIVE SHAFT COUPLING - HUDY SPRING STEEL™
345260-O ALU FRONT WHEEL LOCK - SWISS 7075 T6 - ORANGE (2)
345270 GRAPHITE FRONT AERODYNAMIC DISC 2.2MM - SET
345280 WHEEL SPRING (2)
941218 HIGH-SPEED BALL-BEARING 12x18x4 RUBBER SEALED (2)
901303 HEX SCREW SB M3x3 (10)
901306 HEX SCREW SB M3x6 (10)
901308 HEX SCREW SB M3x8 (10)
902308 HEX SCREW SH M3x8 (10)
902320 HEX SCREW SH M3x20 (10)
903256 HEX SCREW SFH M2.5x6 (10)
903306 HEX SCREW SFH M3x6 (10)
961032 WASHER S 3.2 (10)
962120 WASHER S 12x15x0.5 (10)
962121 WASHER S 12x15x1.0 (10)
980262 PIN 2.5x12 (10)
980320 PIN 3x20 (10)
901303
901306
901306
345230 980262
941218
342412
342224
941218
345260-O
337253
901303 345270
903256
902308
342290
342190
903306 980320
901308
345280
342113
902320
961032
902320
342131
962121
342070
342070
962121
345210
342440
901308
342450
337250
345220
902308
342214
345270
962120
1.5mm

16
FRONT CAMBER
4. FRONT SUSPENSION
WHEELBASE
FRONT ROLL CENTER
COMPOSITE SET OF BUSHINGS
INITIAL SETTING
OPTION:
#345290 Alu shim 12x15x1.0mm (4)
DETAIL
Centered
6.1mm
3.7mm
2x
2x
901303
SB M3x3
980320
P 3x20
Tighten gently Tighten fully
IN OUT
1+1 0.5
1+0.5 1
1 1+0.5
0.5 1+1
0 1+1+0.5
BEARING
OIL
BEARING OIL
0.5mm
1mm
1mm
NOTE ORIENTATION
When using eccentric bushings, both
bushings must be in same position
Concentric
INITIAL
SETTING
INITIAL
SETTING
INITIAL SETTING
Eccentric
2x
SHIM SHIM
ASSEMBLED VIEW
962120
S 12x15x0.5
962121
S 12x15x1.0
941218
BB 12x18x4

17
FRONT ANTI-ROLL BAR
4. FRONT SUSPENSION
902308
SH M3x8
903306
SFH M3x6
2.5x6
3x8 3x6
ASSEMBLED VIEW
2x
2x
Tighten gently
Tighten gently, tighten fully when the drive
pins are assembled. Page 18, step 2
901308
SB M3x8
901306
SB M3x6
961032
S 3.2
902320
SH M3x20
1. Pre-thread mount with the setscrew.
2. After anti-roll bar is inserted, install
and tighten the setscrew.
NOTE
ORIENTATION
NOTE
ORIENTATION
ALTERNATIVE 2: BLADE ANTI-ROLL BAR
903256
SFH M2.5x6

18
WHEELBASE
bAG
2x
2x
NOTE
ORIENTATION
4. FRONT SUSPENSION
FRONT BELT TENSION ADJUSTMENT
TO TIGHTEN FRONT BELT
Rotate BOTH front composite
bushings in arrow direction (A)
TO LOOSEN FRONT BELT
Rotate BOTH front composite
bushings in arrow direction (B)
INITIAL SETTING
Place tab in this notch
BEARING
OIL
2mm
A
B
903412
SFH M4x12
941218
BB 12x18x4
04.2
342070
941218
903412
902310
342080
345430
901408
342315
902310
342040
347211
302080
342180
342023
342030
342013
341212
903410
903412
341201
960040
302663
302653
333461
901304
901303
342466
343481-K
940508
902310
341320
345000
337311
302080 COMPOSITE CASTER CLIPS SET 4+3+2+1 MM (2)
302653 BALL END 4.9MM WITH THREAD 6MM (2)
302663 COMPOSITE BALL JOINT 4.9MM - OPEN - V2 (8)
333461 COMPOSITE ANTI-ROLL BAR BALL JOINT 4.9 MM (4)
337311 PIVOT PIN WITH FLAT SPOT (2)
341201 COMPOSITE BUMPER - DOWNFORCE
341212 COMPOSITE HOLDER FOR FRONT BODY POSTS
341320 COMPOSITE FRONT BODY POST (2)
342013 COMPOSITE LOWER BULKHEAD FRONT RIGHT
342023 COMPOSITE LOWER BULKHEAD FRONT LEFT
342030 COMPOSITE UPPER ARM HOLDER RIGHT
342040 COMPOSITE UPPER ARM HOLDER LEFT
342070 COMPOSITE SET OF BUSHINGS (2)
342080 GRAPHITE SHOCK TOWER FRONT
342180 COMPOSITE LOWER SUSP. ARM CLIPS (2)
342315 COMPOSITE FRONT UPPER SUSP. ECCENTRIC BUSHING (4)
342466 ANTI-ROLL BAR FRONT 2.6 MM
343481-K ALU CUTTED ANTI-ROLL BAR COLLAR - BLACK (2)
345430 PUR® REINFORCED DRIVE BELT FRONT 6.0 x 204 MM
347211 FRONT LOWER INNER PIVOT PIN WITH FLAT SPOT (2)
NOTE
ORIENTATION
Both bushings must
be in same position
COMPOSITE SET OF BUSHINGS
INITIAL SETTING
NOTE
ORIENTATION
901303 HEX SCREW SB M3x3 (10)
901304 HEX SCREW SB M3x4 (10)
901408 HEX SCREW SB M4x8 (10)
902310 HEX SCREW SH M3x10 (10)
903410 HEX SCREW SFH M4x10 (10)
903412 HEX SCREW SFH M4x12 (10)
940508 HIGH-SPEED BALL-BEARING 5x8x2.5 RUBBER SEALED (2)
941218 HIGH-SPEED BALL-BEARING 12x18x4 RUBBER SEALED (2)
960040 NUT M4 (10)

19
WHEELBASE
FRONT ROLL CENTER
FRONT CAMBER RISE
CASTER
DOWNSTOPS
903412
SFH M4x12
960040
N M4
Tighten fully
M3x6 setscrews
4mm 2mm1mm
2x
2x
4. FRONT SUSPENSION
902310
SH M3x10
901408
SB M4x8
902310
SH M3x10
COMPOSITE SET OF BUSHINGS
Use 0mm suspension holders for initial assembly
INITIAL SETTING
DETAIL
NOTE ORIENTATION
NOTE
ORIENTATION

20
FRONT ANTI-ROLL BAR
FRONT ANTI-ROLL BAR
The front body post has two positions - FRONT and REAR. The
distance difference between these two positions is 2mm. The position
of the front body post depends on the position of the rear body
mount: (Page 12 step 2)
1) INITIAL SETTING: If the shim on the rear body mount is IN FRONT
OF the body mount, place the front body mount in position REAR.
2) If the shim on the rear body mount IS BEHIND the body mount,
place the front body mount in position FRONT.
903410
SFH M4x10
FRONT
REAR
INITIAL
SETTING
27.3mm
BEARING
OIL
342462 FRONT ø2.2mm OPTION
342464 FRONT ø2.4mm OPTION
342466 FRONT ø2.6mm STANDARD
342468 FRONT ø2.8mm OPTION
FRONT
ANTI-ROLL BARS
DETAIL
902310
SH M3x10
901303
SB M3x3
901304
SB M3x4
940508
BB 5x8x2.5
ALTERNATIVE 1: WIRE ANTI-ROLL BAR
ALTERNATIVE 2: BLADE ANTI-ROLL BAR
ALTERNATIVE 1: WIRE ANTI-ROLL BAR
CENTER
When the upper bumper is installed, set the bar into the center, remove the
play with the bushings, and tighten the setscrews fully.
2x
4. FRONT SUSPENSION
NOTE ORIENTATION
Step detail
Ensure that the suspension arms move freely.
Ensure that the eccentric holders move freely.
When the bars are set, verify that both sides move at the same time. If they
do, the bars are set up correctly. If not, make sure that both downstops are
the same and that the bar wire is at.
When the bar is set, verify that both
sides move at the same time. If they
do, the bars are set up correctly. If
not, make sure that both downstops
are the same. If the arms still do not
move at the same time, gently loosen
the screw which holds eccentric
bushing and move with the bushing
until the arms do not move same
time. Retighten the screw fully.
If the sides still does not move at the same
time, adjust the length of the bar holders.
Each anti-roll bar blade has a hex hole at its end. Use
a 1.5mm hex wrench to adjust the blades.
FRONT ANTI-ROLL BAR
Do not insert ball into cup too deeply
or bars will bind during operation
3x3
3x3
3x4
3x4