Xray XB2D 2019 User manual

2
The XRAY XB2 is a modern, high-competition premium luxury racing 1/10 electric 2WD off-road buggy
that is the epitome of high-performance and fine distinctive design. Your XB2 offers highest performance,
responsive handling, and traditionally exceptional XRAY quality, engineering, and design. The superb
craftsmanship and attention to detail are clearly evident everywhere on the XRAY XB2.
XB2 was designed around a no compromise platform; the attention to detail creates a low maintenance,
extra long life electric buggy. The ultra-low center of gravity (CG) and optimized weight balance makes
set-up, driving, and maintenance easy and quick.
The XRAY XB2 was created by blending highest-quality materials and excellent design. On high-speed flat
tracks or bumpy tracks, whether driving for fun or racing to win, the XB2 delivers outstanding performance,
speed, and precision handling.
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.
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 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
RC America, 2030 Century Center Blvd #15 Irving,
TX 75062
USA
Phone: [phone] * [phone]
Fax: [phone]
Email: [email protected]
SAFETY PRECAUTIONS
Contains:
LEAD (CAS 7439-92-1) ANTIMONY (CAS 7440-36-0)
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
Contains lead, a listed carcinogen. Lead is harmful if ingested. 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.
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 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.
INTRODUCTION
FAILURE TO FOLLOW THESE INSTRUCTIONS WILL BE CONSIDERED AS ABUSE AND/OR NEGLECT.

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 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 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.
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 modification 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 find 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 modifications 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 final
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!
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 difficulty finding 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.

4
NOT
INCLUDED
To ensure that you always have access
to the most up-to-date version of the
Set-up Book you can download the
HUDY Set-up Book from their web site
at [www.hudy.net] By offering this online
version instead of including a hardcopy
printed version in kits, you will always
be assured of having the most current
updated version.
XRAY offers wide range of optional
tuning parts which are listed in a
table like this. Please refer to the
exploded view of each main section
to verify which part is included in
the kit while all other parts are
available only as an optional part
and must be purchased separately.
SYMBOLS USED
EQUIPMENT REQUIRED
EQUIPMENT
INCLUDED
HUDY Premium Silicone Oils
Oil 300cSt
(#106330)
Oil 350cSt
(#106335)
Transmitter Steering ServoReceiver
Lexan™ Paint Battery Charger Tires & Inserts
Graphite Grease
(HUDY #106210)
Bearing Oil
(HUDY #106230)
CA glue
SAMPLE OF
OPTIONAL PARTS
#32XXXX OPTION 1
#32XXXX OPTION 2
#32XXXX INCLUDED
#32XXXX OPTION 3
Speed Controller LiPo Battery
Pinion Gear with Setscrew
Electric Motor &
Double-sided Tape
(HUDY #107875)
L=R
2x
CA
OIL
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 CA glue Apply oil
Optional
parts
TL
05
Tighten screw
gently
Completed
assembly
Detail
Apply
threadlock
Apply greaseScale Ensure smooth
non-binding
movement
Follow Set-Up Book
1:1
DETAIL
Apply cleaner
Arm Reamer 3.0mm
TOOLS REQUIRED
Side Cutters
(HUDY #189010)
Turnbuckle Wrench
3mm (HUDY #181030)
Reamer (HUDY #107600) or (HUDY #107601)
Tweezer
Combination Pliers
(HUDY #189020)
HUDY TOOLS:
Scissors
(HUDY #188990)
3.0 mm
Special Tool for
turnbuckles, nuts
(HUDY #181090)
Socket 5.5mm
Socket 7.0mm
Allen 2.0mm
Allen 1.5mm
Pocket Hobby Knife
(HUDY #188981)
Professional Multi Tool
(HUDY #183011)

5
XB2 TECH TIPS
SHOCK TOWER PROTECTION
Please follow the Instruction Manual and seal the edges of the shock towers with CA to reinforce them and help prevent
delamination.
Fine sandpaper
Use fine sandpaper to
sand smooth the edges of
all graphite parts.
Apply CA glue to all edges
of the graphite parts.
GRAPHITE PARTS PROTECTION
TIP
Protect all XB2 Graphite Parts:
• Front shock tower
• Rear shock tower
DRIVE SHAFT PIN SERVICING
TIP
To enjoy the longest possible lifespan of the drive shafts and diff outdrives, it is extremely important to properly service the drive shaft pins.
Inspect the pins after every 3 hours of runtime. If the pins show any wear, replace them with new pins.
For quick & easy drive pin replacements use
#106000 HUDY Drive Pin Replacement Tool
together with #106036 Ejector Pivot Pin &
Alternating Pivot 2.5mm.
To replace the worn pins use only
premium HUDY drive pins #106053.
Do not use drive shafts
when the pins are worn.
Press out the worn pins.
Press in new pins and
regularly inspect for wear.

6
930120
365080
305092
325072
365080
325053
325022
930126
325061
325012
930126
BA 2.6x6x1
GRAPHITE GREASE
(HUDY #106210)
2.0mm carbide balls (6x)
CUTAWAY VIEW
941014
941014
1. DIFFERENTIAL
30 5092 BALL DIFFERENTIAL SPRING
32 5002 BALL ADJUSTABLE DIFFERENTIAL FOR 2.5mm PIN SET - SPRING STEEL™
32 5012 BALL DIFF SHORT OUTPUT SHAFT - HUDY SPRING STEEL™
32 5022 BALL DIFF LONG OUTPUT SHAFT - HUDY SPRING STEEL™
32 5053 COMPOSITE BALL DIFFERENTIAL GEAR 53T
32 5061 SCREW FOR BALL DIFF ADJUSTMENT - SPRING STEEL™
32 5072 ALU BALL DIFFERENTIAL NUT
36 5080 DIFF WASHER 17 x 24.5 x 1 (2)
93 0120 CARBIDE BALL 2.4mm FOR BALL DIFF (12)
93 0126 CARBIDE BALL-BEARING AXIAL 2.6x6x1
93 0508 BALL-BEARING 5x8x2.5 STEEL SEALED - OIL (2)
94 1014 BALL-BEARING 10x15x4 RUBBER SEALED - GREASE (2)
BAG
930508 #324901
GEAR DIFFERENTIAL FOR 2.5mm PIN - SET
#325326
REAR DRIVE SHAFT 73mm WITH 2.5mm PIN
HUDY SPRING STEEL™
73mm

7
930508
BB 5x8x2.5
930120
B 2.4
941014
BB 10x15x4
DIFF GREASE
(HUDY #106211)
Square shape orientation on TOP side.
Round shape orientation on BOTTOM side.
NOTE ORIENTATION
2.0mm
THREAD LOCK
DIFF GREASE
(HUDY #106211)
CUTAWAY
VIEW
DIFF GREASE
(HUDY #106211)
2.0mm
DIFF GREASE
(HUDY #106211)
BEARING OIL
(HUDY #106230)
OIL
2.4mm carbide balls (12x)
1. DIFFERENTIAL
Use HUDY Ball-Bearing Grease
#106220 - STANDARD
#106221 - BLUE
#106222 - RED

8
BALL DIFF BREAK-IN & SET-UP INFO
BEFORE RACING, follow these steps to properly break in the differential.
Loosen the adjustment screw 1/2 turn (180° CCW).
2.0mm
2.0mm
2.0mm
(180° CCW)
½
LOOSEN THE ADJUSTMENT SCREW
FULLY TIGHTEN
FULLY TIGHTEN
LOOSEN THE ADJUSTMENT SCREW 1/8 TURN (45˚CCW).
2.0mm
LOOSEN THE ADJUSTMENT SCREW (45˚CCW)
HOLD THE LEFT
REAR WHEEL
HOLD THE SPUR GEAR
ROTATE THE WHEEL IN THE
DIRECTION OF TRAVEL
TABLE
2x
BALL DIFFERENTIAL IS NOW READY

9
2. REAR TRANSMISSION
BAG
BAG
BAG
32 3015 COMPOSITE FRONT-MID MOTOR GEAR BOX (3 GEARS) - NARROW - SET
32 4012 ALU FRONT-MID MOTOR (3 GEARS) PLATE - SWISS 7075 T6 (3mm)
32 4110 ALU TOP SHAFT 20T - SWISS 7075 T6 - HARD COATED
32 4124 ALU 2-PAD SLIPPER CLUTCH PLATE - SWISS 7075 T6
32 4125 ALU 2-PAD SLIPPER CLUTCH PLATE WITH ADAPTER
32 4190 ALU SLIPPER CLUTCH SHIM
32 4236 COMPOSITE GEAR 36T - GRAPHITE
36 4131 SLIPPER CLUTCH PAD “SLS” - V2 (2)
36 4181 SLIPPER CLUTCH SPRING C=45 - BLACK
36 5881 COMPOSITE 3-PAD SLIPPER CLUTCH SPUR GEAR 81T / 48
90 2310 HEX SCREW SH M3x10 (10)
30 3141 ALU SHIM 3x5x1.0mm (10)
32 3016 COMPOSITE MID MOTOR GEAR BOX (3 GEARS) - NARROW - SET
32 4011 ALU MID & REAR MOTOR PLATE - SWISS 7075 T6 (3mm)
32 4225 COMPOSITE GEAR 25T - GRAPHITE
324190
365881
364131
324124
324125
981310
940613
324011
323016
902340
324012
980320
980320
324225
303141
325002
902320
902314 323016
981310
323016
323016
902316
364181
364131
930308
940512 324110
903308
323015
324236
981310
323015
323015
902310
930308
960040
90 2316 HEX SCREW SH M3x16 (10)
90 2320 HEX SCREW SH M3x20 (10)
90 3308 HEX SCREW SFH M3x8 (10)
93 0308 BALL-BEARING 3x8x4 STEEL SEALED - OIL (2)
94 0512 BALL-BEARING 5x12x4 RUBBER SEALED - OIL (2)
94 0613 BALL-BEARING 6x13x5 RUBBER SEALED - OIL (2)
96 0040 NUT M4 (10)
98 0320 PIN 3x20 (10)
98 1310 PIN 3x10 (10)
32 5002 BALL ADJUSTABLE DIFF FOR 2.5mm PIN - SET - HUDY SPRING STEEL™
3-PAD SLIPPER CLUTCH SPUR GEAR
#365875 75T / 48 OPTION
#365878 78T / 48 OPTION
#365881 81T / 48 INCLUDED
#365884 84T / 48 OPTION
#365887 87T / 48 OPTION
GEAR BOX
MIDDLE MOTOR POSITION
GEAR BOX
FRONT MOTOR POSITION
(For HIGH TRACTION track)
For Front motor Gear box assembly follow instructions on page 10 . For Middle motor Gear box assembly follow instructions on page 13 .
FRONT Motor Position MIDDLE Motor Position
Top shaft in LOWER position
Top shaft in HIGHER position
(For LOW TRACTION track)
BAG
90 2314 HEX SCREW SH M3x14 (10)
90 2340 HEX SCREW SH M3x40 (10)
BAG
#323015-G
FRONT-MID MOTOR GEAR BOX (3 GEARS)
GRAPHITE - NARROW - SET
#323017
MID MOTOR GEAR BOX (4 GEARS)
NARROW - SET
#980320-T
TITAN PIN 3x20 (2)
#324100
SLIPPER ELIMINATOR - SET
(69T / 48 SPUR GEAR)
#325872
SLIPPER ELIMINATOR
SPUR GEAR 72T / 48

10
2. REAR TRANSMISSION
981310
P 3x10
980320
P 3x20
940613
BB 6x13x5
OIL
BEARING OIL
(HUDY #106230)
3x10mm
3x10mm
3x20mm
930308
BB 3x8x4
OIL
OIL
NOTE ORIENTATION
36T
GRAPHITE GREASE
(HUDY #106210)
BEARING OIL
(HUDY #106230)
BEARING OIL
(HUDY #106230)
GEAR BOX
FRONT MOTOR POSITION
(For HIGH TRACTION track)
#323015-G
COMPOSITE FRONT-MID
MOTOR GEAR BOX (3 GEARS)
GRAPHITE - NARROW - SET

11
2. REAR TRANSMISSION
902316
SH M3x16
902310
SH M3x10
902320
SH M3x20
940512
BB 5x12x4
OIL
GRAPHITE GREASE
(HUDY #106210)
BEARING OIL
(HUDY #106230)
"CLICK"
3x20mm
3x20mm
3x16mm
3x16mm
3x16mm
903308
SFH M3x8
Bearing with BLUE
rubber covers

12
2. REAR TRANSMISSION
0mm
DETAIL
960040
N M4
NOTE
ORIENTATION
3-PAD SLIPPER CLUTCH SPUR GEAR
#365875 75T / 48 OPTION
#365878 78T / 48 OPTION
#365881 81T / 48 INCLUDED
#365884 84T / 48 OPTION
#365887 87T / 48 OPTION

13
2. REAR TRANSMISSION
303141
SHIM 3x5x1
940512
BB 5x12x4
940613
BB 6x13x5
902340
SH M3x40
GEAR BOX
MIDDLE MOTOR POSITION
(For LOW TRACTION track)
981310
P 3x10
980320
P 3x20
3x20mm
3x10mm
3x10mm
930308
BB 3x8x4
OIL
OIL
NOTE ORIENTATION
25T
GRAPHITE GREASE
(HUDY #106210)
BEARING OIL
(HUDY #106230)
BEARING OIL
(HUDY #106230)
3x5x1mm
3x5x1mm
OIL
OIL
BEARING OIL
(HUDY #106230)
BEARING OIL
(HUDY #106230)
5x12x4mm
CLOSED
OPEN 6x13x5mm
BAG
Bearing with BLUE
rubber covers.

14
(Factory pre-assembled)
2. REAR TRANSMISSION
DETAIL
960040
N M4
Flush with
end of shaft
NOTE ORIENTATION
NOTE ORIENTATION
902314
SH M3x14
SLIPPER CLUTCH SPUR GEARS
#365875 75T / 48 OPTION
#365878 78T / 48 OPTION
#365881 81T / 48 INCLUDED
#365884 84T / 48 OPTION
#365887 87T / 48 OPTION

15
3. REAR SUSPENSION
903322
903306
902312
323081-M
32 3080 GRAPHITE SHOCK TOWER REAR 3.5mm
32 3313 ALU REAR LOWER SUSP. HOLDER - NARROW - FRONT - 7075 T6 (5mm)
32 3325 ALU REAR LONGER LOWER SUSP. HOLDER - NARROW - REAR - (10mm)
32 3550 COMPOSITE REAR SHOCK TOWER ADJUSTING SHIM
32 7310 REAR SUSPENSION PIVOT PIN 3x46mm (2)
36 2315 ECCENTRIC BUSHING SET (2)
36 3112-H COMPOSITE SUSPENSION ARM REAR LOWER RIGHT - HARD
36 3122-H COMPOSITE SUSPENSION ARM REAR LOWER LEFT - HARD
90 2310 HEX SCREW SH M3x10 (10)
90 2316 HEX SCREW SH M3x16 (10)
90 2320 HEX SCREW SH M3x20 (10)
90 2325 HEX SCREW SH M3x25 (10)
90 3306 HEX SCREW SFH M3x6 (10)
90 3310 HEX SCREW SFH M3x10 (10)
32 1106 XB2 ALU CHASSIS - SWISS 7075 T6 (2.5mm) - SHORT
BAG
BAG
362315
327310
362315
323325
363122-H
903306
323313
321106
323080
903310
323550
902316
902325
902310
902320
363112-H
REAR SUSPENSION ARMS
#363112-H RIGHT - HARD INCLUDED
#363122-H LEFT - HARD INCLUDED
#363112-G RIGHT - GRAPHITE OPTION
#363122-G LEFT - GRAPHITE OPTION
NARROW REAR SUSPENSION HOLDERS
#323312 BRASS RF OPTION
#323313 ALU RF INCLUDED
GEAR BOX
FRONT MOTOR POSITION
GEAR BOX
MIDDLE MOTOR POSITION
(For HIGH TRACTION track)
For Front motor Gear box assembly
follow instructions on page 17.
For Middle motor Gear box assembly
follow instructions on page 19 .
(For LOW TRACTION track)
BAG
32 3081-M COMPOSITE SHOCK TOWER REAR - MEDIUM
32 3081-H COMPOSITE SHOCK TOWER REAR - HARD (OPTION)
BAG
90 2312 HEX SCREW SH M3x12 (10)
90 3306 HEX SCREW SFH M3x6 (10)
90 3322 HEX SCREW SFH M3x22 (10)
#321104
ALU CHASSIS - SWISS 7075 T6 (2.5mm)
REAR SHOCK TOWER
#323081-M MEDIUM INCLUDED
#323081-H HARD OPTION
SHORT REAR SUSPENSION
#357330 REAR LOWER OUTER PIVOT PIN (2)
REAR SUSPENSION ARMS
#323110-M MEDIUM RIGHT OPTION
#323120-M MEDIUM LEFT OPTION
#323110-H HARD RIGHT OPTION
#323120-H HARD LEFT OPTION
#323110-G GRAPHITE RIGHT OPTION
#323120-G GRAPHITE LEFT OPTION
NARROW SUSPENSION HOLDERS
#323323 BRASS RR OPTION
#323324 ALU RR OPTION

16
TOE-IN
ANTI-SQUAT
ROLL CENTER
TRACK-WIDTH
ECCENTRIC BUSHINGS HAVE TWO DIFFERENT OFFSETS FROM THE CENTER.
Middle position = 0.5° or 0.375mm from center.
Outer position = 1° or 0.75mm from center.
The XRAY rear alu lower suspension holders provide great range of adjustment for the rear suspension. Using different combinations of eccentric bushings, fine adjustment of rear anti-squat, rear toe-in, rear
roll center, and rear track-width can be obtained. For more information about the influence of rear anti-squat, rear toe-in, rear roll center and rear track width on car handling, please refer to HUDY Set-up Book
(#209100).
The tables describe the amounts of adjustment using the center and outside positions of the eccentric bushings.
The middle position eccentric bushings allow for finer adjustment increments.
Example:
The track-width is directly influenced by the size of
the wheels and tires used.
0(RR) - 0 (RF) = 2°
0(RR) - 0.5 (RF) = 2.5°
0(RR) - 1 (RF) = 3°
ANTI-SQUAT ROLL CENTER TRACK-WIDTH TOE-IN
RR RR RR RRRF RF RF RF(°) (mm) (mm) (°)
=2°
=3°
=1°
=3°
=2°
=4°
=1°
=2°
=0°
= 2°
= 2.5°
= 3°
=4°
=5°
=3°
=3°
=4°
=2°
=5°
=6°
=4°
=
+1.5mm
= 0mm
=
-1.5mm
=
+0.75mm
= 0mm
=
-0.75mm
Marked “L”
Marked “R”
RR
RF
THREAD LOCK
(all screws)
All possible mounting
alternatives of eccentric bushings
3. REAR SUSPENSION
903306
SFH M3x6
Arm Reamer 3.0mm
(HUDY #107633)
If the suspension arm does not move freely
use a HUDY Arm Reamer to size the holes
of the arms
ARM
ARM
Check for free movement
DETAIL
INITIAL SETTING
(TOE IN = 3 º / ANTI-SQUAT = 2º)
INITIAL SETTING
(TOE IN = 3 º / ANTI-SQUAT = 2º)
MEDIUM - For very-low & low traction
HARD - For medium & high traction
GRAPHITE - For high & very-high traction
REAR SUSPENSION ARMS
#363112-H RIGHT HARD INCLUDED
#363122-H LEFT HARD INCLUDED
#363112-G RIGHT GRAPHITE OPTION
#363122-G LEFT GRAPHITE OPTION
NARROW REAR SUSPENSION HOLDERS
#323312 BRASS FRONT OPTION
#323313 ALU FRONT INCLUDED
#321104
ALU CHASSIS - SWISS 7075 T6 (2.5mm)

17
3. REAR SUSPENSION
3x10mm
3x20mm
3x10mm
3x20mm
3x16mm
3x25mm
3x16mm
3x25mm
DO NOT USE FOR BASIC SET-UP
(INITIAL SETTING)
SHOCKS MOUNTED IN FRONT OF REAR SHOCK TOWER
SHOCKS MOUNTED BEHIND REAR SHOCK TOWER
ALTERNATIVE 1
ALTERNATIVE 2
902310
SH M3x10
902316
SH M3x16
902320
SH M3x20
902325
SH M3x25
903310
SFH M3x10
For the rear shock position cut
holes into the Lexan rear wing.
GEAR BOX
FRONT MOTOR POSITION
(For HIGH TRACTION track)

18
GEAR BOX
MIDDLE MOTOR POSITION
(For LOW TRACTION track)
902312
SH M3x12
903306
SFH M3x6
903322
SFH M3x22
NOTE ORIENTATION
NOTE ORIENTATION
3x22mm
3. REAR SUSPENSION
BAG
MEDIUM - For very-low & low traction
HARD - For medium & high traction
REAR SHOCK TOWERS
#323081-M MEDIUM INCLUDED
#323081-H HARD OPTION
NOTE ORIENTATION
VIEW
DETAIL

19
3. REAR SUSPENSION
30 2665 COMPOSITE BALL JOINT 4.9mm - CLOSED WITH HOLE (4)
30 3123 ALU SHIM 3x6x2.0mm (10)
30 6219 COMPOSITE SET OF SERVO SHIMS (4)
32 2610 ADJUSTABLE TURNBUCKLE 55mm M3 L/R - HUDY SPRING STEEL™ (2)
32 3040 COMPOSITE REAR ROLL CENTER HOLDER - CARPET EDITION
32 3354-H COMPOSITE UPRIGHT REAR - HARD
32 3381 ALU REAR HUB PLATE - SWISS 7075 T6
32 5324 REAR DRIVE SHAFT 75mm - HUDY SPRING STEEL™
32 5340 REAR DRIVE AXLE - HUDY SPRING STEEL™
32 7210 FRONT SUSPENSION PIVOT PIN (2)
36 2280 ALU CONICAL SHIM 3x6x2.0mm (10)
36 2316 ECCENTRIC BUSHING SET - OPEN (2)
36 2651 BALL END 4.9mm WITH THREAD 8mm (2)
36 3520 REAR WING POST - V2 (2)
36 5230 DRIVE SHAFT COUPLING - HUDY SPRING STEEL™
36 5357 ALU WHEEL HUB 12mm - OFFSET "+2.25mm" (2)
90 2205 HEX SCREW SH M2x5 (10)
90 2254 HEX SCREW SH M2.5x4 (10)
90 2310 HEX SCREW SH M3x10 (10)
90 2312 HEX SCREW SH M3x12 (10)
90 2316 HEX SCREW SH M3x16 (10)
94 0513 BALL-BEARING 5x12x4 RUBBER SEALED - GREASE (2)
94 1014 BALL-BEARING 10x15x4 RUBBER SEALED - GREASE (2)
96 1025 WASHER S 2.5 (10)
98 0210 PIN 2x9.8 (10)
363520
303123
323381
362280
362651
302665
980210
302665
323040 323042-M
327210
902254
902254
902310
325324
365230
325340
941014
362651
902312902316
362280
322610
306219 323354-H
902312
902205
365357 940513
362316
BAG
306219
961025
BAG
32 3042-M COMPOSITE REAR ROLL-CENTER HOLDER - DIRT EDITION - MEDIUM
32 3042-H COMPOSITE REAR ROLL-CENTER HOLDER - DIRT EDITION - HARD (OPTION)
BAG
GEAR BOX
FRONT MOTOR POSITION
(For HIGH TRACTION track)
GEAR BOX
MIDDLE MOTOR POSITION
(For LOW TRACTION track)
BAG
90 2312 HEX SCREW SH M3x12 (10)
REAR ROLL CENTER HOLDER
#323040 COMPOSITE INCLUDED
#323041 ALU OPTION
REAR UPRIGHTS
#323354-H HARD INCLUDED
#323354-G GRAPHITE OPTION
#323355 ALU OPTION
WHEEL HUBS 12mm
#365360 +4.5mm - 6 slots OPTION
#365359 +3.75mm - 5 slots OPTION
#365358 +3.0mm - 4 slots OPTION
#365357 +2.25mm - 3 slots INCLUDED
#365356 +1.5mm - 2 slots OPTION
#365355 +0.75mm - 1 slot OPTION
#365353 0mm - 0 slots OPTION
#365354 -0.75mm - Lightw. OPTION
XRAY BALL-BEARING
#940512 5x12x4 OIL OPTION
#941015 10x15x4 OIL OPTION
#940513 5x12x4 GREASE INCLUDED
#941014 10x15x4 GREASE INCLUDED
#323382
ALU REAR HUB PLATE FOR MULTI ADJ.
UPRIGHT - 1-HOLE - SWISS 7075 T6
#362400
ANTI-ROLL BAR 1.0mm SET ANTI-ROLL BARS
#362470 1.0mm
#362471 1.1mm
#362472 1.2mm
901306 362470
901303
303431-K
303454
901308
REAR ROLL CENTER HOLDER
#323042-M MEDIUM INCLUDED
#323042-H HARD OPTION
#323041 ALU OPTION
ALU CONICAL SHIM
#362280 SILVER INCLUDED
#362280-K BLACK OPTION
#362280-O ORANGE OPTION

20
3. REAR DRIVETRAIN
941014
BB 10x15x4
GRAPHITE GREASE
(HUDY #106210)
➊
➋
➌
➍
➐
➑
➒
➎
➏
DRIVE SHAFT (75mm)
902316
SH M3x16
2x
2x
L=R
940513
BB 5x12x4
902205
SH M2x5
980210
P 2x10
5x12x4mm
10x15x4mm OPTIONAL HEX HUB EFFECTS
Different offset hex hubs are used to increase or
decrease the track-width.
LESS OFFSET
Rear - more traction
Front - more steering
MORE OFFSET
Rear - less traction
Front - less steering
XRAY BALL-BEARING
#940512 5x12x4 OIL OPTION
#941015 10x15x4 OIL OPTION
#940513 5x12x4 GREASE INCLUDED
#941014 10x15x4 GREASE INCLUDED
3x6x2mm
3x16mm
3x12mm
INITIAL SETTING
ALTERNATIVE ORIENTATION
L=R
L=R
INITIAL SETTING
L=R
INITIAL SETTING
Use HUDY Ball-Bearing Grease
#106220 - STANDARD
#106221 - BLUE
#106222 - RED
WHEEL HUBS 12mm
#365360 +4.5mm - 6 slots OPTION
#365359 +3.75mm - 5 slots OPTION
#365358 +3.0mm - 4 slots OPTION
#365357 +2.25mm - 3 slots INCLUDED
#365356 +1.5mm - 2 slots OPTION
#365355 +0.75mm - 1 slot OPTION
#365353 0mm - 0 slots OPTION
#365354 -0.75mm - Lightw. OPTION
902312
SH M3x12
902312
SH M3x12
303123
SHIM 3x6x2
REAR ROLL CENTER HOLDER
#323040 COMPOSITE INCLUDED
#323041 ALU OPTION
REAR COMPOSITE ROLL CENTER HOLDER
#323042-M MEDIUM INCLUDED
#323042-H HARD OPTION
BAG
GEAR BOX
FRONT MOTOR POSITION
(For HIGH TRACTION track)
GEAR BOX
MIDDLE MOTOR POSITION
(For LOW TRACTION track)
REAR UPRIGHTS
#323354-H HARD INCLUDED
#323354-G GRAPHITE OPTION
#323355 ALU OPTION
#323382
ALU REAR HUB PLATE FOR MULTI ADJ.
UPRIGHT - 1-HOLE - SWISS 7075 T6
Bearing with BLACK
rubber covers
HUDY Ball-Bearing
Grease
HUDY Ball-Bearing
Grease