Xray T4F User manual

2
The T4F is a high-competition, high-quality, 1/10-scale front wheel drive
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 fulfill these requirements,
please return the kit in unused and unassembled form back to the shop where
you have purchased it.
Before building and operating your T4F, 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, download and use set-up book from the
web, and examine all details carefully. If for some reason you decide The T4F is
not what you wanted or expected, do not continue any further. Your hobby dealer
cannot accept your T4F kit for return or exchange after it has been partially or
fully assembled.
Contents of the box may differ from pictures. In line with our policy of continuous
product development, the exact specifications of the kit may vary without prior
notice.
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.
CUSTOMER SUPPORT
XRAY Europe
K Vystavisku 6992
91101 Trenčín
Slovakia, EUROPE
Phone: [phone]
Fax: [phone]
E-mail: [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]
Fax: [phone]
E-mail: [email protected]
FAILURE TO FOLLOW THESE INSTRUCTIONS WILL BE CONSIDERED AS ABUSE AND/OR NEGLECT.
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 RC 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 XRAY Set-up Book, XRAY will now be offering only the digital
online version on our website 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 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.
TOOLS REQUIRED
Side Cutters
(HUDY #189010)
Turnbuckle Wrench
4mm (HUDY #181040)
Reamer
(HUDY #107600) or
(HUDY #107601)
Combination Pliers
(HUDY #189020)
HUDY TOOLS:
Scissors
(HUDY #188990)
4.0 mm
Socket: 5.5mm Socket: 7.0mmAllen: 1.5mm Allen: 2.0mm Allen: 3.0mm
Pocket Hobby Knife
(HUDY #188981)
RC Shock-Plier Uni Tool
(HUDY #183011)
Arm Reamer 3.0mm
SYMBOLS USED
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
EQUIPMENT REQUIRED
ITEMS INCLUDED
Apply oil
Optional
parts
Premium Silicone Oil
450cSt (HUDY #106345)
450cSt
300.000cSt
Premium Silicone Oil
300.000cSt (HUDY #106630)
TL
05
Tighten screw
gently
Completed
assembly
Detail view
Apply thread
lock
Apply greaseScale Ensure smooth
non-binding
movement
Graphite Grease
(HUDY #106210)
Follow Set-up Book
FRONT & REAR AXLES
SAMPLE OF
OPTIONAL PARTS
#30XXXX OPTION 1
#30XXXX OPTION 2
#30XXXX OPTION 3
1:1
DETAIL
Pinion Gear and Setscrew
Transmitter Steering ServoReceiver Bearing Oil
(HUDY #106230) Speed Controller
Electric Motor &
Lexan™ Paint Battery Charger Wheels
Tires
Inserts
LiPo BatteryBodyshell Fibre Tape
(HUDY #107870)
Double-sided Tape
(HUDY #107875)

5
CA
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.
CHASSIS PREPARATION
COLOR INDICATIONS
CA
CA
DETAIL
To protect and seal edges of graphite parts, sand edges smooth and then apply CA glue.
Do this for: chassis edges, countersunk holes, and shock towers.
Apply only a bit of CA glue in the countersunk holes.
Apply only a bit of CA glue in the countersunk holes.

6
1. GEAR DIFFERENTIAL
Use tweezers to
insert pin.
981210
P 2x10
981210
P 2x10
972050
O 5x2
972050
O 5x2
964050
S 5x15x0.3
964050
S 5x15x0.3
➊
➋
➌
➍
➍➍
➎
➎
➊
➋
➌
➍
➎
DETAIL
➎
STEP
STEP DETAIL
304900 XRAY GEAR DIFFERENTIAL - SET
304910 COMPOSITE GEAR DIFF. CASE & COVER
304930 COMPOSITE GEAR DIFF BEVEL & SATELLITE GEARS (2+4)
304970 ALU GEAR DIFF OUTDRIVE ADAPTER - 7075 T6 (2)
304980 COMPOSITE GEAR DIFF CROSS PIN
304990 DIFF GASKET (4)
903256 HEX SCREW SFH M2.5x6 (10)
941015 BALL-BEARING 10x15x4 RUBBER SEALED - OIL (2)
964031 WASHER S 3.5x10x0.2 (10)
964050 WASHER S 5x15x0.3 (10)
971240 SILICONE O-RING 24x0.7 (10)
972050 SILICONE O-RING 5x2 (10)
981210 PIN 2x10 (10)
➍
NOTE
ORIENTATION
#304971
HUDY SPRING STEEL™ OUTDRIVES
#304971
HUDY SPRING STEEL™ OUTDRIVES
BAG
304970
304910
964050
972050
304990
304910
903256
981210
981210
304970
941015
971240
972050
964031
304980
304930
304930
941015
CUTAWAY VIEW
#304932
GRAPHITE GEAR DIFF BEVEL & SATELLITE GEARS (2+4)
#304932
GRAPHITE GEAR DIFF BEVEL & SATELLITE GEARS (2+4)
DETAIL
#309002
SET OF CERAMIC BALL-BEARINGS (14)

7
964031
S 3.5x10x0.2
1. GEAR DIFFERENTIAL
1. GEAR DIFFERENTIAL
971240
O 24x0.7
After disassembling the gear diff the large O-ring may have an increased size and
may be more difficult to re-install. We recommend either inserting the old O-ring
carefully in the diff cover, or replacing the old O-ring with a new O-ring if the old
one cannot be made to fit properly.
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:
If softer oil is used, the car has better rotation, but
traction decreases.
SOFTER
HARDER
If harder oil is used, the car has more forward
traction and is more stable, but rotation decreases.
TIPS FOR DIFFERENTIALS
#107865
HUDY Ultimate Digital Pocket
Scale 300g±0.01g
INITIAL SETTING
300K cSt
100K (HUDY #106610)
200K (HUDY #106620)
300K (HUDY #106630) INITIAL SETTING
500K (HUDY #106650)
1MILLION (HUDY #106650)
➊ Put the diff (without oil) on the scale and check the
weight (approximately 8.30g)
➋ Slowly pour oil into the diff and watch the weight. Add 1.70g of oil
into the diff. The approximate weight of the diff including oil is 10g.
8.30g + 1.70g = 10g
#304932
GRAPHITE GEAR DIFF BEVEL &
SATELLITE GEARS (2+4)
g
8.30 g
10

8
1. GEAR DIFFERENTIAL
941015
BB 10x15x4
OIL
903256
SFH M2.5x6
Tighten the screws equally but do
NOT tighten them completely.
Finish tightening in this order.
➊
➋
➌
➍
NOTE
ORIENTATION
DETAIL
BEARING OIL
(HUDY #106230)
BEARING OIL
(HUDY #106230)
OIL

9
305522-K
965050
965050
962060
940610
940610
303008-O
902306
303081
302081
302062
302062 305448
305576 980210
305866
301152
902306
902306
302036-O
302762-O
302763-O
302036-O
902304
902306
903306
903306
903305
902312
304900
302038-O
302038-O
902306 902306
302765-O
302764-O
2. FRONT TRANSMISSION
BAG
02
302036-O T4 ALU UPPER CLAMP WITH 2 ADJ. ROLL-CENTERS (L+R) - ORANGE
302038-O T4F ALU UPPER CLAMP - ORANGE
302062 T4 COMPOSITE ADJUSTMENT BALL-BEARING HUB (4)
302081 T4F SHOCK TOWER FRONT 3.0MM GRAPHITE
302762-O T4 ALU LOWER ADJUSTMENT BULKHEAD - FRONT R / REAR L - ORANGE
302763-O T4 ALU LOWER ADJUSTMENT BULKHEAD - FRONT L / REAR R - ORANGE
302764-O T4F ALU LOWER ADJUSTMENT BULKHEAD - FRONT RIGHT - ORANGE
302765-O T4F ALU LOWER ADJUSTMENT BULKHEAD - FRONT LEFT - ORANGE
303008-O T4F ALU MOTOR MOUNT - ORANGE
303081 T4F SHOCK TOWER REAR 3.0MM GRAPHITE
305448 HIGH-PERFORMANCE DRIVE BELT REAR 3 x 144 MM
305522-K T4F ALU SOLID LAYSHAFT - BLACK
305576 COMPOSITE FIXED PULLEY 16T (2)
305866 COMPOSITE OFFSET SPUR GEAR 96T / 64
902304 HEX SCREW SH M3x4 - STAINLESS (10)
902306 HEX SCREW SH M3x6 (10)
902312 HEX SCREW SH M3x12 (10)
903305 HEX SCREW SFH M3x5 (10)
903306 HEX SCREW SFH M3x6 (10)
940610 BALL-BEARING 6x10x3 RUBBER SEALED - OIL (2)
962060 WASHER S 6x8x0.5 (10)
965050 E-CLIP 5 (10)
980210 PIN 2x10 (10)
304900 XRAY GEAR DIFFERENTIAL - SET
301152 T4F CHASSIS 2.2MM GRAPHITE
OFFSET SPUR GEARS 48P
#305772 72T / 48P OPTION
#305776 76T / 48P OPTION
#305778 78T / 48P OPTION
#305779 79T / 48P OPTION
OFFSET SPUR GEARS 64P
#305860 90T / 64P OPTION
#305862 92T / 64P OPTION
#305866 96T / 64P INCLUDED
#305869 99T / 64P OPTION
#305870 100T / 64P OPTION
#305874 104T / 64P OPTION
#305876 106T / 64P OPTION
#302063
ALU ADJUSTMENT BALL-BEARING
HUB (2)
#309002
SET OF CERAMIC BALL-BEARINGS (14)

10
903305
SFH M3x6
903306
SFH M3x6
902312
SH M3x12
TO LOOSEN FRONT BELT: Rotate both front nylon hubs in arrow direction B
BELT TENSION ADJUSTMENT
AB
L=R
AB
TO TIGHTEN FRONT BELT: Rotate both front nylon hubs in arrow direction A
LOWER DIFF POSITION
UPPER DIFF POSITION
Front diff LOWER position - tab in top notch
- provides more front traction, but makes
the car push on-power.
Recommended for low-traction tracks.
Front diff UPPER position - tab in bottom
notch - provides more steering, but less front
traction
Recommended for medium-high traction
tracks and technical tracks.
2. FRONT TRANSMISSION
#302063
ALU ADJUSTMENT BALL-BEARING HUB (2)
3x6mm
INITIAL POSITION
3x6mm
3x5mm
3x12mm
NOTE ORIENTATION
DETAIL
DETAIL
NOTE ORIENTATION

11
965050
C5
965050
C5
962060
SHIM 6x8x0.5
980210
P 2x10
940610
BB 6x10x3
940610
BB 6x10x3
902306
SH M3x6
L=R L=R
➊
➋
➌
➍
➎
2. FRONT TRANSMISSION
DO NOT TIGHTEN FULLY
AT THIS STEP
DO NOT TIGHTEN FULLY
AT THIS STEP

12
902306
SH M3x6
DETAIL
DO NOT TIGHTEN FULLY
AT THIS STEP
FINISH TIGHTENING IN THIS ORDER. FINISH TIGHTENING IN THIS ORDER.
FULLY TIGHTEN
FULLY TIGHTEN
FULLY TIGHTEN FULLY TIGHTEN
Shock tower screws (4)
Shock tower screws (4)
Bulkhead screws (4) Bulkhead screws (4)
2. FRONT TRANSMISSION
DO NOT TIGHTEN FULLY
AT THIS STEP
902304
SH M3x4
NOTE ORIENTATION

13
BAG
03
REAR ARMS
#303168 HARD INCLUDED
#303169 GRAPHITE OPTION
#303172 ALU OPTION
FRONT ARMS
#302168 HARD INCLUDED
#302169 GRAPHITE OPTION
#302170 ALU OPTION
#307217
TITANIUM SUSPENSION PIVOT PIN (2)
#302711 BRASS FRONT 1-PIECE SUSPENSION HOLDER - FRONT - FF
#302721 BRASS FRONT 1-PIECE SUSPENSION HOLDER - REAR - FR
#303714 BRASS 2-PIECE SUSPENSION HOLDER - RIGHT
#303715 BRASS 2-PIECE SUSPENSION HOLDER - LEFT
#303721 BRASS REAR 1-PIECE SUSPENSION HOLDER - REAR - RR
#302712-O ALU FRONT 1-PIECE SUSPENSION HOLDER (FF-LOW)
#302722-O ALU FRONT 1-PIECE SUSPENSION HOLDER (FR-LOW)
3. FRONT & REAR SUSPENSION
302168 FRONT SUSPENSION ARM - HARD - 1-HOLE
302710-O ALU FRONT 1-PIECE SUSPENSION HOLDER - FRONT - FF
302720-O ALU FRONT 1-PIECE SUSPENSION HOLDER - REAR - FR
303129 COMPOSITE SET OF WHEELBASE SHIMS (3x1MM; 1x2MM) (2)
303168 REAR SUSPENSION ARM - HARD - 1-HOLE
303710-O ALU 2-PIECE SUSPENSION HOLDER (1)
303720-O ALU REAR 1-PIECE SUSPENSION HOLDER - REAR - RR
307216 SUSPENSION PIVOT PIN (2)
362315 ECCENTRIC BUSHING SET (2)
901308 HEX SCREW SB M3x8 (10)
901310 HEX SCREW SB M3x10 (10)
901408 HEX SCREW SB M4x8 (10)
903306 HEX SCREW SFH M3x6 (10)
362315
362315
303129
303129
901310
303168
303720-O
303129
303129
901408
901408
903306
903306
307216
362315
307216
302168
302720-O
901308
903306
362315
302710-O
303710-O
#303722-O ALU REAR 1-PIECE SUSPENSION HOLDER - RR - LOW
#302101
ALU FRONT & REAR SUSPENSION ARM 1-HOLE - SWISS 7075 T6 (2+2)
#303718-O ALU 2-PIECE SUSPENSION 0.25 ECCENTRIC HOLDER STAND
#303716-O ALU 2-PIECE SUSPENSION HOLDER - RIGHT – LOW
#303717-O ALU 2-PIECE SUSPENSION HOLDER - LEFT – LOW

14
901310
SB M3x10
901408
SB M4x8
901308
SB M3x8
901408
SB M4x8
FRONT DOWNSTOP
ADJUSTMENT
REAR DOWNSTOP
ADJUSTMENT
2x
2x
REAR ARMS
#303168 HARD INCLUDED
#303169 GRAPHITE OPTION
#303172 ALU OPTION
FRONT ARMS
#302168 HARD INCLUDED
#302169 GRAPHITE OPTION
#302170 ALU OPTION
REAR LEFT ARM REAR RIGHT ARM
RIGHT REAR ARM
FRONT LEFT ARMFRONT RIGHT ARM
LEFT REAR ARM
REAR ARMS
FRONT ARMS
3. FRONT & REAR SUSPENSION
5mm
2.3mm
3mm
4x8mm
3x8mm
FRONT RIGHT ARM
FRONT LEFT ARM
L=R
L=R
COMPLETED ASSEMBLY
3x10mm
4x8mm
COMPLETED ASSEMBLY
2.2mm

15
TOE-IN
TRACK-WIDTH
WHEELBASE
ROLL CENTER
ANTI-SQUAT
PRO-SQUAT
3x6x1mm
903306
SFH M3x6
NOTE ORIENTATION
903306
SFH M3x6
ECCENTRIC BUSHINGS HAVE TWO DIFFERENT OFFSETS FROM THE CENTER
Middle position = 0.5 mm or 0.5° from center
Outer position = 1mm or 1° from center
The XRAY rear alu lower suspension holders provide even greater range of adjustment for the rear suspension. Using different combinations of eccentric bushings, fine adjustment of rear
squat, rear toe-in, rear roll center, and rear track-width can be obtained. For more information about the influence of rear squat, rear toe-in, rear roll center and rear track-width on car
handling, please refer to HUDY Set-up Book (#209100).
Marked
“RR”
Composite eccentric bushings
INITIAL SETTING
1 10.5 0.50
Composite eccentric bushings
INTIAL SETTING
1 10.5 0.50
REAR
SUSPENSION
FRONT SUSPENSION
#303718-O ALU 2-PIECE SUSPENSION 0.25
ECCENTRIC HOLDER STAND
Marked
“FF”
3. FRONT & REAR SUSPENSION
303129
SHIM 3x6x1
3x6x1mm
L=R
#307217
TITANIUM SUSPENSION
PIVOT PIN (2)
L=R
#107633 HUDY Arm Reamer 3.0mm
It is extremely important that the arms move freely
on the pivot pins. If they do not, use the Arm Reamer
(3.0mm) to slightly resize the holes in the arms.
#303721
BRASS REAR 1-PIECE SUSPENSION
HOLDER - (RR)
#303722-O
ALU REAR 1-PIECE SUSPENSION HOLDER
- RR - LOW
#303716-O ALU 2-PIECE SUSPENSION HOLDER - RIGHT – LOW
#303717-O ALU 2-PIECE SUSPENSION HOLDER - LEFT – LOW
#303714 BRASS 2-PIECE SUSPENSION HOLDER - RIGHT
#303715 BRASS 2-PIECE SUSPENSION HOLDER - LEFT
#302712-O
ALU FRONT 1-PIECE
SUSPENSION HOLDER (FF-LOW)
#302711
BRASS FRONT 1-PIECE
SUSPENSION HOLDER - (FF)

16
903306
SFH M3x6
303129
SHIM 3x6x1
TOE-IN
TRACK-WIDTH
WHEELBASE
ROLL CENTER
ANTI-DIVE
KICK-UP
For better stability and to make the car easier to drive, optional #302190 and #303190 graphite stiffeners may be used on the suspension arms. Using only 4 screws, each graphite stiffener can be installed
or removed which will completely change the characteristics of the car. Stiffeners may be used independently at front and/or rear. IMPORTANT! Install/remove stiffeners equally on left & right sides.
2.5x6mm
#302190
GRAPHITE FRONT LOWER ARM PLATE 1.6MM (2)
#303190
GRAPHITE REAR LOWER ARM PLATE 1.6MM (2)
2x
2x
All possible mounting
alternatives of eccentric bushings
3x6x1mm
3x6x1mm
2.5x6mm
ECCENTRIC BUSHINGS HAVE TWO DIFFERENT OFFSETS FROM THE CENTER.
Middle position = 0.5 mm or 0.5° from center
Outer position = 1mm or 1° from center
The XRAY front alu lower suspension holders provide even greater range of adjustment for the front
suspension. Using different combinations of eccentric bushings, fine adjustment of front anti-squat, front
kick-up, front toe-in, front roll center, and front track-width can be obtained. For more information about
the influence of front anti-dive, front kick-up, front toe-in, front roll center and front track-width on car
handling, please refer to HUDY Set-up Book.
Composite eccentric bushings
INITIAL SETTING
1 10.5 0.50
Composite eccentric bushings
INITIAL SETTING
1 10.5 0.50
FRONT SUSPENSION
3. FRONT & REAR SUSPENSION
#307217
TITANIUM SUSPENSION
PIVOT PIN (2)
It is extremely important that the arms move freely
on the pivot pins. If they do not, use the Arm Reamer
(3.0mm) to slightly resize the holes in the arms.
L=R
#107633 HUDY Arm Reamer 3.0mm

17
#302570
GRAPHITE STEERING
PLATE SET
#302612-O
ALU ADJ. TURNBUCKLE M3 L/R 39mm
ORANGE - SWISS 7075 T6 (2)
#302610
ADJ. TURNBUCKLE L/R 40mm
HUDY SPRING STEEL (2)
4. STEERING
BAG
04
902306
301162 T4F UPPER DECK 2.0MM GRAPHITE
302526 COMPOSITE DUAL SERVO SAVER ARM
302535 ALU STEERING POST FOR DUAL-SERVO SAVER (2)
302547-O ALU STEERING PLATE 8.5MM FOR DUAL-SERVO SAVER - ORANGE
302612 ALU ADJ. TURNBUCKLE M3 L/R 39 MM - SWISS 7075 T6 (2)
302663 COMPOSITE BALL JOINT 5 MM - OPEN - V2 (8)
303127-K ALU SHIM 3x6x4.0MM - BLACK (10)
303129 COMPOSITE SET OF SHIMS (3x1MM; 1x2MM) (2)
303212 ALU ADJ. TURNBUCKLE L/R 26 MM - SWISS 7075 T6 (2)
303454 BALL JOINT 4.9MM - OPEN (4)
362650 BALL END 4.9MM WITH THREAD 6MM (2)
362652 BALL END 4.9MM WITH THREAD 10MM (2)
372503 COMPOSITE SERVO SAVER - X-STIFF - SET - V2
902305 HEX SCREW SH M3x5 (10)
902306 HEX SCREW SH M3x6 (10)
903306 HEX SCREW SFH M3x6 (10)
903308 HEX SCREW SFH M3x8 (10)
930306 BALL-BEARING 3x6x2.5 STEEL-SEALED - OILED (2)
940508 BALL-BEARING 5x8x2.5 RUBBER-SEALED - OILED (2)
302663
302612
302663
302663
302612
302663
903306
302535
302526
372503
372503
372503
303129
362652
902305
903308
303212
303454
940508
940508
301162
362650
303129
930306
302547-O
303127-K
362652
902306
#302525
ALU DUAL-SERVO SAVER ARM
#302544-O
ALU SHIM FOR RADIAL PLAY ADJUSTMENT
OF STEERING ARM - ORANGE (2)

18
303129
SHIM 3x6x2
303127-K
SHIM 3x6x4
H = Hitec (24T)
F = Futaba, Robe (25T)
K = KO, JR, Airtronics, Sanwa (23T)
940508
BB 5x8x2.5
930306
BB 3x6x2.5
903308
SFH M3x8
2x
L=R
303129
SHIM 3x6x1
3x6x2.5mm
3x6x2mm
3x6x4mm
8mm THREAD
10mm THREAD
approximately 47mm
NOTE
ORIENTATION
6mm THREAD
NOTE
ORIENTATION
STEERING LINKS SERVO LINK
Adjust servo link to fit your servo
65.4mm
INITIAL SETTING (3x6x1mm)
3x1mm & 1x2mm shims
To change Ackermann angle,
use 2 identical shims (of same
thickness) between the alu
steering plate and ball ends.
2x
2x
L=R
THREAD
THREAD
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 free movement (120° CCW)
BEARING OIL
(HUDY #106230)
OIL
HUDY ALU SERVO HORNS
#293501 KO, Sanwa - 23T
#293502 Hitec - 24T
#293503 Futaba - 25T
HUDY CLAMP ALU SERVO HORNS
#293407 KO, Sanwa - 23T
#293408 Hitec - 24T
#293409 Futaba - 25T
For more in-corner steering and better steering response,
aluminum servo horns may be used.
IMPORTANT!
When the aluminum horn is used, the steering servo saver is not
used. This increases the risk of breaking the servo in serious crashes.
Install the pivot balls with Professional
Multi Tool (HUDY #183011)
#302612-O
ALU ADJ. TURNBUCKLE M3
L/R 39mm ORANGE - SWISS
7075 T6 (2)
#302610
ADJ. TURNBUCKLE L/R 40mm
HUDY SPRING STEEL (2)
5x8x2.5mm
4. STEERING
INITIAL SETTING
#302525
ALU DUAL SERVO SAVER ARM
We recommend using the aluminum dual-servo
saver arms when better steering response is needed.
Also recommended for asphalt tracks.
THREAD
THREAD
OIL
NOTE
ORIENTATION
BEARING OIL
(HUDY #106230)
#302544-O
ALU SHIM FOR RADIAL PLAY ADJUSTMENT
OF STEERING ARM - ORANGE (2)

19
902305
SH M3x5
902306
SH M3x6
903306
SFH M3x6
CHASSIS FLEX SETTING
TOP DECK SETTING
Smart chassis flex adjustment via graphite steering plate
which can be mounted with an additional aluminum stand.
Using only the graphite steering plate, chassis flex is
medium; using the aluminum stand for reinforcement, the
flex becomes stiffer. Stiffer flex results in more aggressive
handling and increased steering.
#302570
GRAPHITE STEERING PLATE SET
4. STEERING
3x5mm
3x6mm

20
05
BAG
901304
362650
302663
303803
302463
930407
303212
980210
305342
302663
303432-O
303455
362650
302663
901303
302663
303212
305350-K
302253
305346
305394
305221
362652
303123-K
302291
901304
362651
303127-K
303354
940510
303455
901303
303432-O
930407
307221
303129
362651 305350-K
901304
303122-K
362649
901304
902205
940510
901302
305241
902310
302364
303123-K
902205
940510
940510
901302
980210
305253
305254
362649
307321
302363
305253
#305242
DRIVE SHAFT REPLACEMENT CAP
3.5MM - ORANGE - STRONG (4)
#307222 TITANIUM FRONT ARM PIVOT PIN (2)
#307322 TITANIUM REAR ARM PIVOT PIN (2)
5. FRONT & REAR TRANSMISSION
302253 COMPOSITE STEERING BLOCK - HARD
302291 STEEL STEERING BUSHING (2+2)
302363 COMPOSITE C-HUB RIGHT - 4° DEG. - MEDIUM - V2
302364 COMPOSITE C-HUB LEFT - 4° DEG. - MEDIUM - V2
302463 T4F ANTI-ROLL BAR FOR BALL BEARINGS - FRONT 1.3 MM
302663 COMPOSITE BALL JOINT 4.9MM - OPEN - V2 (8)
303122-K ALU SHIM 3x6x1.0MM - BLACK (10)
303123-K ALU SHIM 3x6x2.0MM - BLACK (10)
303127-K ALU SHIM 3x6x4.0MM - BLACK (10)
303129 COMPOSITE SET OF SHIMS (3x1MM; 1x2MM) (2)
303212 ALU ADJ. TURNBUCKLE M3 L/R 26 MM - SWISS 7075 T6 (2)
303354 COMPOSITE UPRIGHT 0° OUTBOARD TOE-IN - HARD
303432-O ALU ANTI-ROLL BAR BUSHING - ORANGE (2)
303455 COMPOSITE ANTI-ROLL BAR BALL JOINT 4.9 MM (4)
303803 ANTI-ROLL BAR FOR BALL BEARINGS - REAR 1.3 MM
305241 DRIVE SHAFT REPLACEMENT CAP 3.5 MM (4)
305221 ECS (ES) DRIVE SHAFT 51MM FOR 2MM PIN - HUDY SPRING STEEL™ (1)
305253 ECS DRIVE SHAFT COUPLING FOR 2MM PIN - HUDY SPRING STEEL™
305254 ECS (ES) DRIVE SHAFT CASE FOR 2MM PIN - HUDY SPRING STEEL™
305332 ECS ES (ES) DRIVE SHAFT 52MM - HUDY SPRING STEEL™ - SET (OPTION)
305333 ECS ES (ES) DRIVE SHAFT 50MM - HUDY SPRING STEEL™ - SET (OPTION)
305334 ECS ES (ES) DRIVE SHAFT 51MM - HUDY SPRING STEEL™ - SET
305342 T4F REAR DRIVE AXLE - HUDY SPRING STEEL™
305346 ECS DRIVE AXLE FOR 2MM PIN - HUDY SPRING STEEL™
305350-K ALU WHEEL HUB - BLACK (2)
305394 ECS DRIVE SHAFT PIN 2 x 9 WITH FLAT SPOT (2)
307221 FRONT ARM PIVOT PIN (2)
307321 REAR ARM PIVOT PIN (2)
362649 BALL END 4.9MM WITH THREAD 5MM (2)
362650 BALL END 4.9MM WITH THREAD 6MM (2)
362651 BALL END 4.9MM WITH THREAD 8MM (2)
362652 BALL END 4.9MM WITH THREAD 10MM (2)
901302 HEX SCREW SB M3x2.5 (10)
901303 HEX SCREW SB M3x3 (10)
901304 HEX SCREW SB M3x4 (10)
902205 HEX SCREW SH M2x5 (10)
902310 HEX SCREW SH M3x10 (10)
930407 BALL-BEARING 4x7x2.5 STEEL SEALED - OIL (2)
940510 BALL-BEARING 5x10x4 RUBBER SEALED - OIL (2)
980210 PIN 2x10 (10)
#309002
SET OF CERAMIC
BALL-BEARINGS (14)
#303212-O
ALU TURNBUCKLE L/R 26mm
ORANGE - SWISS 7075 T6 (2)
#303210
TURNBUCKLE M3 L/R 26mm
HUDY SPRING STEEL™ (2)
REAR ANTI-ROLL BARS
#303801 REAR 1.1 MM OPTION
#303802 REAR 1.2 MM OPTION
#303803 REAR 1.3 MM INCLUDED
#303804 REAR 1.4 MM OPTION
#303805 REAR 1.5 MM OPTION
#303806 REAR 1.6 MM OPTION
FRONT ANTI-ROLL BARS
#302463 FRONT 1.3 MM INCLUDED
#302464 FRONT 1.4 MM OPTION