Xray XB2 2018 Carpet Edition 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.
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 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

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
Arm Reamer 3.0mm
SYMBOLS USED
TOOLS REQUIRED
EQUIPMENT REQUIRED
Side Cutters
(HUDY #189010)
Turnbuckle Wrench
3mm (HUDY #181030)
Reamer (HUDY #107600) or (HUDY #107601)
Tweezer
Combination Pliers
(HUDY #189020)
HUDY TOOLS:
Transmitter Steering ServoReceiver
Lexan™ Paint Battery Charger Tires & Inserts
Bearing Oil
(HUDY #106230)
CA glue
Scissors
(HUDY #188990)
3.0 mm
Speed Controller LiPo Battery
Pinion Gear with Setscrew
Electric Motor &
Double-sided Tape
(HUDY #107875)
Special Tool for
turnbuckles, nuts
(HUDY #181090)
Socket 5.5mm
Socket 7.0mm
Allen 2.0mm
Allen 1.5mm
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
1:1
DETAIL
Apply cleaner
ITEMS INCLUDED
HUDY Premium Silicone Oils HUDY Premium Silicone Oils HUDY Premium Silicone Oils Graphite Grease
(HUDY #106210)
Oil 400cSt (#106340) Oil 500cSt (#106350) Oil 5000cSt (#106450)
Pocket Hobby Knife
(HUDY #188981)
RC Shock-Plier Uni 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
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 tables
like these. 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.
Set-up Book
At the beginning of each section is an exploded view of the parts to be assembled.
There is also a list of all the parts and part numbers that are related to the assembly
of that section.
The part descriptions are color-coded to make it easier for you to identify the source
of a part. Here are what the different colors mean:
STYLE A - indicates parts that are included in the bag marked for the section.
STYLE B - indicates parts that are included in the box.
STYLE C - indicates parts that are already assembled from previous steps.
COLOR INDICATIONS
321100
324900
365884
SAMPLE OF OPTIONAL PARTS
#32XXXX TYPE OPTION 1
#32XXXX TYPE OPTION 2
#32XXXX TYPE INCLUDED
#32XXXX TYPE OPTION 3

6
BEVEL & SATELITTE GEARS + PINS
#304932 + #304980 COMPOSITE INCLUDED
#335030 + #335080 STEEL OPTION
GRAPHITE GREASE
(HUDY #106210)
GRAPHITE GREASE
(HUDY #106210)
1. REAR DIFFERENTIAL
2x
STEP
Use tweezer to insert pin
➊
➊
➋
➌
➍
➍
➎
➍➎
30 4932 GRAPHITE GEAR DIFF BEVEL & SATELLITE GEARS (2+4)
30 4980 COMPOSITE GEAR DIFF CROSS PIN
32 4990 DIFF GASKET (4)
32 4901 GEAR DIFFERENTIAL FOR 2.5MM PIN - SET
32 4910 COMPOSITE GEAR DIFFERENTIAL CASE
32 4953 COMPOSITE GEAR DIFFERENTIAL CASE WITH PULLEY 53T
32 4961 GEAR DIFF OUTDRIVE ADAPTER - HUDY SPRING STEEL™ (2)
90 2258 HEX SCREW SH M2.5x8 (10)
94 1015 HIGH-SPEED BALL-BEARING 10x15x4 RUBBER SEALED (2)
96 4031 WASHER S 3.5x10x0.2 (10)
96 4050 WASHER S 5x15x0.3 (10)
97 2050 SILICONE O-RING 5x2 (10)
98 1210 PIN 2x10 (10)
BAG
324961
324953
964050
964031
972050
324910
902258
324961
304932
941015
981210
972050
964031
964050
324990
981210
941015
304932
304980
972050
O 5x2
972050
O 5x2
964050
S 5x15x0.3
964050
S 5x15x0.3
981210
P 2x10
981210
P 2x10
NOTE ORIENTATION
NOTE ORIENTATION
OIL
DETAIL
DETAIL
➎
OIL
➋
➌
➍
➎
#325001
BALL ADJUSTABLE DIFFERENTIAL SET
HUDY SPRING STEEL™
#365320
REAR DRIVE SHAFT 67MM - HUDY SPRING STEEL™
If #325001 ball diff will be used than also
#365320 drive shafts (2x) must be used together.

7
DIFFERENTIAL OIL
Fill differential up to the
top of the diff pin.
DO NOT fill the diff to the
top of the housing.
TO ENSURE YOU HAVE THE SAME AMOUNT OF OIL FROM REBUILD TO REBUILD, DO THE FOLLOWING:
➊ Put the diff (without oil) on the scale and check the
weight (approximately 11.23g)
➋ Slowly pour oil into the diff and watch the weight. Add
0.95g of oil into the diff. The approximate weight of the
diff including oil is 12.18g.
LOW-MEDIUM TRACTION 3 000cSt (HUDY #106430)
MEDIUM-HIGH TRACTION 5 000cSt (HUDY #106450)
NOTE: Softer oil increases rear traction, harder oil increases on-power steering.
TIPS FOR REAR DIFFERENTIAL
11.23g + 0.95g = 12.18g
#107865
HUDY Ultimate Digital Pocket Scale 300g±0.01g
5000 cSt
g
1 2.57
g
1 1.62
1. REAR DIFFERENTIAL
964031
S 3.5x10x0.2
902258
SH M2.5x8
941015
BB 10x15x4
OIL
OIL
Rear diff
Silicone oil 5 000cSt
Fill just above the diff pin.
USE PROPER AMOUNT OF OIL IN THE DIFFS
Use a digital scale to measure the exact amount
of oil in the diff. Remember that during operation
the diff gets hotter and the heat may allow the oil
to expand. If there is too much oil inside it may
interfere with the diff operation and damage the
internal gears.
OIL
Tighten the screws equally but do NOT
tighten them completely.
Finish tightening in this order.
➊
➋
➌
➍
HUDY ULTIMATE SILICONE OILS
#106410 1000 cSt - 50ml OPTION
#106420 2000 cSt - 50ml OPTION
#106430 3000 cSt - 50ml OPTION
#106440 4000 cSt - 50ml OPTION
#106450 5000 cSt - 50ml INCLUDED
#106460 6000 cSt - 50ml OPTION
#106470 7000 cSt - 50ml OPTION

8
2. REAR TRANSMISSION
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 4120 ALU 3-PAD SLIPPER CLUTCH PLATE - SWISS 7075 T6
32 4121 ALU 3-PAD SLIPPER CLUTCH PLATE WITH ADAPTER
32 4190 ALU 3-PAD SLIPPER CLUTCH SHIM
32 4236 COMPOSITE GEAR 36T - GRAPHITE
36 4131 SLIPPER CLUTCH PAD “SLS” - V2 (2)
36 4140 ALU 3-PAD SLIPPER CLUTCH PLATE DISC - 7075 T6
36 4180 SLIPPER CLUTCH SPRING C=30 - BLACK
36 5881 COMPOSITE 3-PAD SLIPPER CLUTCH SPUR GEAR 81T / 48
BAG
324190
324120
364140
365881
324121
324236
930308
981310
981310
940613
903308
902310
980320
324901
GEAR DIFFERENTIAL
FOR 2.5MM PIN - SET
902320
902320 902316
902316
902316
364180
364131
364131
364131
940512
324110
323015
324012
323015
323015
930308
960040
981310
P 3x10
980320
P 3x20
940613
BB 6x13x5
OIL
90 2310 HEX SCREW SH M3x10 (10)
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 (2)
94 0512 HIGH-SPEED BALL-BEARING 5x12x4 RUBBER SEALED (2)
94 0613 HIGH-SPEED BALL-BEARING 6x13x5 RUBBER SEALED (2)
96 0040 NUT M4 (10)
98 0320 PIN 3x20 (10)
98 1310 PIN 3x10 (10)
32 4901 GEAR DIFFERENTIAL FOR 2.5MM PIN - SET
BEARING OIL
(HUDY #106230)
3x10mm
3x10mm
3x20mm
SLIPPER CLUTCH SPUR GEARS
#365875 75T / 48 OPTION
#365878 78T / 48 OPTION
#365881 81T / 48 INCLUDED
#365884 84T / 48 OPTION
#365887 87T / 48 OPTION

9
2. REAR TRANSMISSION
930308
BB 3x8x4
902316
SH M3x16
902310
SH M3x10
902320
SH M3x20
940512
BB 5x12x4
OIL
OIL
OIL
NOTE ORIENTATION
GRAPHITE GREASE
(HUDY #106210)
GRAPHITE GREASE
(HUDY #106210)
BEARING OIL
(HUDY #106230)
"CLICK"
BEARING OIL
(HUDY #106230)
3x20mm
3x20mm
3x16mm
3x16mm
3x16mm

10
2. REAR TRANSMISSION
1mm
DETAIL
903308
SFH M3x8
960040
N M4
NOTE ORIENTATION
NOTE ORIENTATION SLIPPER CLUTCH SPUR GEARS
#365875 75T / 48 OPTION
#365878 78T / 48 OPTION
#365881 81T / 48 INCLUDED
#365884 84T / 48 OPTION
#365887 87T / 48 OPTION

11
3. REAR SUSPENSION
32 3080 GRAPHITE SHOCK TOWER REAR 3.5MM
32 3110-H COMPOSITE SUSPENSION ARM REAR LOWER RIGHT - HARD
32 3120-H COMPOSITE SUSPENSION ARM REAR LOWER LEFT - HARD
32 3313 ALU REAR LOWER SUSP. HOLDER - NARROW - FRONT - 7075 T6 (5MM)
32 3324 ALU REAR LOWER SUSP. HOLDER - NARROW - REAR - 7075 T6 (5MM)
32 3550 COMPOSITE REAR SHOCK TOWER ADJUSTING SHIM
35 7330 REAR LOWER OUTER PIVOT PIN (2)
36 2315 ECCENTRIC BUSHING SET (2)
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 1104 ALU CHASSIS - SWISS 7075 T6 (2.5MM)
BAG
323080
902325
902320
902316
902310
362315
357330
323120-H
903310
903310
903306
903306
323313
321104
323550
362315
323110-H
323324
REAR SUSPENSION ARMS
#323110-M RIGHT - MEDIUM OPTION
#323120-M LEFT - MEDIUM OPTION
#323110-H RIGHT - HARD INCLUDED
#323120-H LEFT - HARD INCLUDED
#323110-G RIGHT - GRAPHITE OPTION
#323120-G LEFT - GRAPHITE OPTION
NARROW REAR SUSPENSION HOLDERS
#323312 BRASS FRONT OPTION
#323313 ALU FRONT INCLUDED
#323323 BRASS REAR OPTION
#323324 ALU REAR INCLUDED
#321102
XB2 GRAPHITE CHASSIS 2.5MM
#321103
ALU CHASSIS - FLEX - SWISS 7075 T6 (2MM)

12
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
#323110-M RIGHT MEDIUM OPTION
#323120-M LEFT MEDIUM OPTION
#323110-H RIGHT HARD INCLUDED
#323120-H LEFT HARD INCLUDED
#323110-G RIGHT GRAPHITE OPTION
#323120-G LEFT GRAPHITE OPTION
NARROW REAR SUSPENSION HOLDERS
#323312 BRASS FRONT OPTION
#323313 ALU FRONT INCLUDED
#323323 BRASS REAR OPTION
#323324 ALU REAR INCLUDED
XB2 CHASSIS
#321102 GRAPHITE 2.5MM OPTION
#321103 ALU FLEX 2.0MM OPTION
#321104 ALU 2.5MM INCLUDED

13
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.

14
DRIVE SHAFT COLLAR
#365470 COMPOSITE INCLUDED
#365471-K ALU - BLACK OPTION
#365471-O ALU - ORANGE OPTION
3. REAR DRIVETRAIN
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 3040 COMPOSITE REAR ROLL CENTER HOLDER - CARPET EDITION
32 3350-H COMPOSITE UPRIGHT REAR - HARD
32 5321 REAR DRIVE SHAFT 67MM - HUDY SPRING STEEL™
32 7320 REAR ARM PIVOT PIN (2)
36 2280 ALU CONICAL SHIM 3x6x2.0MM (10)
36 2610 ADJUSTABLE TURNBUCKLE 50MM M3 L/R - HUDY SPRING STEEL™ (2)
36 2651 BALL END 4.9MM WITH THREAD 8MM (2)
36 2652 BALL END 4.9MM WITH THREAD 10MM (2)
36 3520 REAR WING POST - V2 (2)
36 5230 DRIVE SHAFT COUPLING - HUDY SPRING STEEL™
36 5340 REAR DRIVE AXLE - HUDY SPRING STEEL™
36 5360 ALU WHEEL HUB 12MM - OFFSET “+4.5MM” (2)
36 5470 COMPOSITE DRIVE SHAFT SAFETY COLLAR - V2 (3)
90 2205 HEX SCREW SH M2x5 (10)
90 2254 HEX SCREW SH M2.5x4 (10)
90 2310 HEX SCREW SH M3x10 (10)
90 2316 HEX SCREW SH M3x16 (10)
94 0510 HIGH-SPEED BALL-BEARING 5x10x4 RUBBER SEALED (2)
94 0512 HIGH-SPEED BALL-BEARING 5x12x4 RUBBER SEALED (2)
96 1025 WASHER S 2.5 (10)
98 0210 PIN 2x9.8 (10)
363520
902205
323350-H
303123
362280
362652
302665
362610
980210
302665
902316
327320
902254
902254
902310
325321
365230
365340
362651
362280
365470
323040
940510
306219
940512
365360
2x
L=R
GRAPHITE GREASE
(HUDY #106210)
DRIVE SHAFT COLLAR
➊
➋
➌
➍
DRIVE SHAFT (67mm)
980210
P 2x10
BAG
961025
#362400 - ANTI-ROLL BAR 1.0MM SET
901306 362470
901303
303431-K
303454
901308
ANTI-ROLL BARS
#362470 1.0mm
#362471 1.1mm
#362472 1.2mm
DRIVE SHAFT COLLAR
#365470 COMPOSITE INCLUDED
#365471-K ALU - BLACK OPTION
#365471-O ALU - ORANGE OPTION
REAR UPRIGHTS
#323350-M MEDIUM OPTION
#323350-H HARD INCLUDED
#323351 ALU OPTION
XRAY BALL-BEARING
#359050 5x10x4 GREASE OPTION
#359051 5x12x4 GREASE OPTION
#940510 5x10x4 OIL INCLUDED
#940512 5x12x4 OIL INCLUDED
REAR ROLL CENTER HOLDER
#323040 COMPOSITE INCLUDED
#323041 ALU OPTION
WHEEL HUBS 12MM
#365360 +4.5mm - 6 slots INCLUDED
#365359 +3.75mm - 5 slots OPTION
#365358 +3.0mm - 4 slots OPTION
#365356 +2.25mm - 3 slots OPTION
#365356 +1.5mm - 2 slots OPTION
#365355 +0.75mm - 1 slot OPTION
#365353 0mm - 0 slots OPTION
#365354 -0.75mm - Lightw. OPTION

15
3. REAR DRIVETRAIN
902316
SH M3x16
2x
2x
L=R
L=R
BEARING OIL
(HUDY #106230)
➊
➋
➌
940512
BB 5x12x4
940510
BB 5x10x4
902205
SH M2x5
980210
P 2x10
5x12x4mm 5x10x4mm
OIL
OIL
REAR ROLL CENTER HOLDER
#323040 COMPOSITE INCLUDED
#323041 ALU OPTION
OPTIONAL HEX HUB EFFECTS
Different offset hex hubs are used to increase or
decrease the track-width.
COMPOSITE - For low, medium & high traction
ALU - For very-high traction
LESS OFFSET
Rear - more traction
Front - more steering
MORE OFFSET
Rear - less traction
Front - less steering
WHEEL HEX HUBS 12MM
#365360 +4.5mm 6 slots INCLUDED
#365359 +3.75mm 5 slots OPTION
#365358 +3.0mm 4 slots OPTION
#365356 +2.25mm 3 slots OPTION
#365356 +1.5mm 2 slots OPTION
#365355 +0.75mm 1 slot OPTION
#365353 0mm 0 slots OPTION
#365354 -0.75mm Lightw. OPTION
REAR UPRIGHTS
#323350-M MEDIUM OPTION
#323350-H HARD INCLUDED
#323351 ALU OPTION
MEDIUM: For very-low & low traction
HARD: For medium & high traction
ALU: For very-high traction
XRAY BALL-BEARING
#359050 5x10x4 GREASE OPTION
#359051 5x12x4 GREASE OPTION
#940510 5x10x4 OIL INCLUDED
#940512 5x12x4 OIL INCLUDED

16
3. REAR DRIVETRAIN
Adjustment Shim BEHIND HUB moves hub forward.
SHORTER WHEELBASE (INITIAL SETTING)
ARM
902254
SH M2.5x4
961025
WASHER S 2.5
902310
SH M3x10
38.9mm
2x
2x
2x
L=R
L=R
L=R
L=R
Check for free
movement
10mm THREAD
INITIAL SETTING
INITIAL SETTING
8mm THREAD
THREAD
THREAD
Ensure that the rear upright moves
freely. If it does not move freely, use
sandpaper to thin both wheelbase
adjustment shims.
3x6x2mm
TIGHTEN
GENTLY
TIGHTEN GENTLY
DETAIL
Adjustment Shim IN FRONT OF HUB moves hub
rearward.
LONGER WHEELBASE
ARM
306219
SHIM 3x6x2
NOTE ORIENTATION
DETAIL
10mm THREAD
8mm THREAD
CONICAL SHIM 3x6x2mm
CONICAL SHIM 3x6x2mm
3x6x2mm
NOTE
ORIENTATION
NOTE
ORIENTATION
362280
CON. SHIM 3x6x2
303123
SHIM 3x6x2
Higher position gives more roll, generates
more traction.
Standard position recommended for use
on medium- to high-traction tracks.
LOWER WING POSITION
(INITIAL SETTING)
UPPER WING POSITION

17
30 3141 ALU SHIM 3x5x1.0MM (10)
32 1260-M COMPOSITE CHASSIS SIDE GUARDS L+R - MEDIUM
32 1262-H COMPOSITE CHASSIS FRONT GUARD - HARD
32 1264 COMPOSITE FRONT CHASSIS SIDE BRACE - SHORT (2)
32 1266 GRAPHITE CHASSIS SIDE GUARD BRACE - SOFT
32 1290 COMPOSITE WIRE HOLDER (2)
32 2311 COMPOSITE FRONT LOWER SUSPENSION HOLDER
32 2571 COMPOSITE STEERING PLATE
32 2510 ALU STEERING ARM (2) (OPTION)
32 2511 COMPOSITE STEERING ARM (2)
32 2550 ALU SERVO SAVER PIVOT SHAFT (2)
90 2306 HEX SCREW SH M3x6 (10)
90 2308 HEX SCREW SH M3x8 (10)
90 2312 HEX SCREW SH M3x12 (10)
90 3308 HEX SCREW SFH M3x8 (10)
90 3310 HEX SCREW SFH M3x10 (10)
90 3318 HEX SCREW SFH M3x18 (10)
93 0306 BALL-BEARING 3x6x2.5 (2)
94 0510 HIGH-SPEED BALL-BEARING 5x10x4 RUBBER SEALED (2)
903308
903310
903318
903308
321260-M 321260-M
303141
303141
322511
930306
321290
322571
930306
902312
902306
940510
940510
322550
321264
321266
902308
321262-H
322311
902308
903308
903308
4. FRONT ASSEMBLY
BAG
STEERING PLATE
#322570 ALU OPTION
#322571 COMPOSITE INCLUDED
STEERING ARMS
#322510 ALU OPTION
#322511 COMPOSITE INCLUDED
FRONT LOWER CHASSIS BRACE
#321262-M MEDIUM OPTION
#321262-H HARD INCLUDED
SIDE CHASSIS GUARDS
#321260-M MEDIUM INCLUDED
#321260-H HARD OPTION
GRAPHITE SIDE GUARD BRACE
#321263 MEDIUM OPTION
#321266 SOFT INCLUDED
FRONT LOWER ARM MOUNT
#322310 ALU 26º OPTION
#322311 COMPOSITE 26º INCLUDED
#322312 BRASS 26º OPTION
#322313 ALU 23°/29° OPTION
#321211 SUSP. HOLDER BRACE 23°/29° OPTION
#322314 BRASS 23°/29° OPTION
#321211 SUSP. HOLDER BRACE 23°/29° OPTION

18
4. FRONT ASSEMBLY
3x8mm
3x8mm
903308
SFH M3x8
903308
SFH M3x8
903308
SFH M3x8
902308
SH M3x8
903310
SFH M3x10
903318
SFH M3x18
3x8mm
3x10mm
3x18mm
NOTE
ORIENTATION
MEDIUM - For very-low, low & medium traction.
Generates more traction.
HARD - For high- & very-high traction tracks.
More stable and less traction on front susp.
MEDIUM - For very-low, low & medium traction.
SOFT - For high- & very-high traction tracks.
FRONT LOWER CHASSIS BRACE
#321262-M MEDIUM OPTION
#321262-H HARD INCLUDED
GRAPHITE SIDE GUARD BRACE
#321263 MEDIUM OPTION
#321266 SOFT INCLUDED
SIDE CHASSIS GUARDS
#321260-M MEDIUM INCLUDED
#321260-H HARD OPTION
MEDIUM - For low & medium traction
HARD - For high traction

19
4. FRONT ASSEMBLY
303141
SHIM 3x5x1
902312
SH M3x12
930306
BB 3x6x2.5
902306
SH M3x6
940510
BB 5x10x4
902308
SH M3x8
3x5x1mm
3x5x1mm
NOTE ORIENTATION
NOTE ORIENTATION
NOTE ORIENTATION
BEARING OIL
(HUDY #106230)
BEARING OIL
(HUDY #106230)
BEARING OIL
(HUDY #106230)
OIL
OIL
OIL
OIL
OIL
OIL
OIL
OIL
COMPOSITE - Easy to drive, more forgiving, less steering
ALU - More aggressive, more steering, more
precise steering
COMPOSITE - Easy to drive, more forgiving
ALU - More aggressive, more steering, more
precise steering
Thread Lock
STEERING PLATE
#322570 ALU OPTION
#322571 COMPOSITE INCLUDED
STEERING ARMS
#322510 ALU OPTION
#322511 COMPOSITE INCLUDED
Tighten the screws gently but fully,
and then loosen 1/3 turn so the
composite dual servo saver moves
freely.
➊ tighten fully
➋ loosen 1/3 ccw
➌ check moves freely (120° CCW)
FRONT LOWER ARM MOUNT
#322310 ALU 26º OPTION
#322311 COMPOSITE 26º INCLUDED
#322312 BRASS 26º OPTION
#322313 ALU 23°/29° OPTION
#321211 SUSP. HOLDER BRACE 23°/29° OPTION
#322314 BRASS 23°/29° OPTION
#321211 SUSP. HOLDER BRACE 23°/29° OPTION
COMPOSITE - Generates more traction in front
ALU - Makes car more stable
BRASS - Adds more weight in front, less weight transfer

20
5. FRONT SUSPENSION
30 2665 COMPOSITE BALL JOINT 4.9MM - CLOSED WITH HOLE (4)
30 6219 COMPOSITE SET OF SERVO SHIMS (4)
32 1200 COMPOSITE FRONT BUMPER
32 1210 ALU SUSPENSION HOLDER BRACE - SWISS 7075 T6 (3MM)
32 2040-H COMPOSITE FRONT ROLL CENTER HOLDER - HARD
32 2110-H COMPOSITE SUSPENSION ARM FRONT LOWER - HARD
32 2210-H COMPOSITE C-HUB 0° DEG. RIGHT - HARD
32 2220-H COMPOSITE C-HUB 0° DEG. LEFT - HARD
32 2250-M COMPOSITE STEERING BLOCK - MEDIUM
32 2280 COMPOSITE CASTER ECCENTRIC BUSHING (2+2+2)
32 2290 GRAPHITE EXTENSION FOR STEERING BLOCK - 2 SLOTS (2)
32 2610 ADJUSTABLE TURNBUCKLE 55MM M3 L/R - HUDY SPRING STEEL™ (2)
32 5240 FRONT DRIVE AXLE - HUDY SPRING STEEL™
32 7210 FRONT SUSPENSION PIVOT PIN (2)
32 7220 FRONT ARM PIVOT PIN (2)
36 2280 ALU CONICAL SHIM 3x6x2.0MM (10)
36 2290 STEEL STEERING BUSHING - SHORT (2)
36 2291 STEEL STEERING BUSHING - LONG (2)
36 2650 BALL END 4.9MM WITH THREAD 6MM (2)
36 2651 BALL END 4.9MM WITH THREAD 8MM (2)
36 5353 ALU WHEEL HUB 12MM (2)
90 2205 HEX SCREW SH M2x5 (10)
90 2254 HEX SCREW SH M2.5x4 (10)
90 2308 HEX SCREW SH M3x8 (10)
90 2312 HEX SCREW SH M3x12 (10)
90 3308 HEX SCREW SFH M3x8 (10)
90 3316 HEX SCREW SFH M3x16 (10)
94 0510 HIGH-SPEED BALL-BEARING 5x10x4 RUBBER SEALED (2)
96 0030 NUT M3 (10)
96 1025 WASHER S 2.5 (10)
98 0210 PIN 2x9.8 (10)
960030
322290
902308
902205
362291
980210
322610
362280
362651
362650
322610
302665
322220-H
322110-H
902312
961025
322280
306219
902254
321210
321200
302665
903308
903316
902254
961025
327210
327220
902312
322210-H
362651
302665
302665
362290
325240
940510
322250-M
940510
365353
362651
362280
BAG
322040-H
WHEEL HEX HUBS 12MM
#365360 +4.5mm 6 slots INCLUDED
#365359 +3.75mm 5 slots OPTION
#365358 +3.0mm 4 slots OPTION
#365356 +2.25mm 3 slots OPTION
#365356 +1.5mm 2 slots OPTION
#365355 +0.75mm 1 slot OPTION
#365353 0mm 0 slots INCLUDED
#365354 -0.75mm Lightw. OPTION
C-HUB
#322210-M RIGHT MEDIUM OPTION
#322210-H RIGHT HARD INCLUDED
#322220-M LEFT MEDIUM OPTION
#322220-H LEFT HARD INCLUDED
FRONT ROLL CENTER HOLDER
#322040-M MEDIUM OPTION
#322040-H HARD INCLUDED
#322041 ALU OPTION
STEERING BLOCK EXTENSION
#322290 2-SLOTS INCLUDED
#322291 1-SLOT OPTION
#322292 0-SLOTS OPTION
STEERING BLOCK
#322250-M MEDIUM INCLUDED
#322250-H HARD OPTION
SUSPENSION ARM
#322110-M MEDIUM OPTION
#322110-H HARD INCLUDED
#322110-G GRAPHITE OPTION