Xray XB8E (2017), XB8 (2017) Instruction Manual

2

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]
Fax: [phone]
Email: [e-mail]

BEFORE YOU START

The XB8E is a high-competition, high-quality, 1/8 electric buggy 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 XB8E, 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 XB8E is
not what you wanted or expected, do not continue any further. Your hobby dealer
cannot accept your XB8E 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.

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 short­circuits, 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 newly­purchased 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

To ensure that you always have access to the most up-to-date
version of the XRAY Set-up Book, XRAY will now be offering only
the digital online version at our website at www.teamxray.com.
By offering this online version instead of including a hardcopy
printed version in kits, you will always be assured of having the
most current updated version.

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 instant

glue

Cut off shaded

portion

Cut off

remaining

material

Tighten screw

gently

TOOLS REQUIRED

EQUIPMENT REQUIRED

TOOLS & EQUIPMENT INCLUDED NOT INCLUDED

Assemble front

and rear the same

way

Apply oil

Use special

tool

Silicone Shock Oil
(HUDY #106356 550cSt 100ml)
(HUDY #106371 700cSt 100ml)

Silicone Diff Oil
(HUDY #106431 3000cSt 100ml)
(HUDY #106451 5000cSt 100ml)
(HUDY #106471 7000cSt 100ml)

Special Tool for all turnbuckles,

nuts (HUDY #181090)

Turnbuckle Wrench
(HUDY #181040 4mm)
(HUDY #181050 5mm)

Phillips 5.0mm

(HUDY TOOLS)

Socket 5.0 / 5.5mm

(HUDY TOOLS)

Allen 1.5 / 2.0 / 2.5 / 3.0mm

(HUDY TOOLS)

17mm Wheel Nut Tool

(HUDY #107570)

Side Cutters

(HUDY #189010)

Body Reamer

(HUDY #107600)

or

(HUDY #107601)

Cross Wrench

(HUDY #107581)

Scissors

(HUDY #188990)

Needle Nose Pliers
(HUDY #189020)

Snap Ring Pliers

(HUDY #189040)

➊ ➋ ➌

Apply grease Apply

threadlock

Ensure smooth

non-binding

movement

Use pliers Follow tip here

Arm Reamer 3mm/4mm

(HUDY TOOLS)

Graphite Grease

(HUDY #106210)

Follow Set-up

Book

Use cleaner

or WD-40®

Time

Ball Allen 2.5mm

(HUDY TOOLS)

BOOK

SET-UP

BOOK

SET-UP

Pocket Hobby Knife

(HUDY #188981)

Transmitter Battery ChargerElectric Motor Speed Controller LiPo Battery

Tires & Wheels

Receiver

Lexan™ Paint

CA Glue

Transmitter Batteries

Pinion Gear

ThreadlockSteering Servo

5

XB8E TECH TIPS

If there is too much or too little diff side play, this may create non-optimal gear mesh between the diff gear and the pinion drive gear. This is easily resolved by inserting 1 or 2 of the included thin shims behind a diff

outdrive ball-bearing, depending on how much play there is.

FRONT & REAR DIFF GEAR MESH ADJUSTMENT

THE LOCATION OF THE SHIM(S) DEPENDS ON WHETHER YOU ARE TRYING TO CLOSE OR OPEN THE GAP:

TO CLOSE A WIDE GAP

TO OPEN A NARROW GAP

TIP

insert shim(s) here

insert shim(s) here

TIP

Tighten screw until pivot ball is tight
against block.

Lift ball joint until it snaps into place over
pivot ball. Ball joint should move freely.

The finished joint. Loosen and remove screw.

INSTALLING PIVOT BALLS INTO COMPOSITE BALL-JOINTS

Place the pivot ball on the ball joint
and use a screw to tighten it to an
engine mount or some other part.

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 easy drive pin replacements use #106000
HUDY Drive Pin Replacement Tool.

To replace the worn pins use only
premium HUDY drive pins #106050.

Do not use drive shafts
when the pins are worn.

Press out the worn pins.

Press in new pins and
regularly inspect for wear.

To CLOSE a wide gap:
add 1 or 2 shims against diff spur gear

To OPEN a narrow gap:
add 1 or 2 shims on the other side of the diff, away from spur gear

TO OPEN A NARROW GAP

TO CLOSE A WIDE GAP

#962130 S 13 x 16 x 0.2 mm (10)

#962131 S 13 x 16 x 0.1 mm (10)

WASHER

SUSPENSION & DRIVETRAIN MAINTENANCE

• Check suspension for free movement during building and operation, and especially after running
and if you have crashed the car. If the suspension does not move freely, use the appropriate HUDY
Arm Reamer to clean and resize the holes of the suspension arms.

• Regularly check the drive shaft pins (both side and center) and if they show any wear must be
immediately replaced by new pins. If the car is run with worn pins, excessive wear on the diff
outdrives will result. The 106000 HUDY Drive Pin Replacement Tool (for 3mm Pins) is a compact,
rugged multi-use tool set for replacing 3mm drive pins in drive shafts. Use the HUDY replacement
drive shaft pins 3x14 (#106050).

• Regularly inspect and replace the connecting pins which connect the center drive shafts with the
pinion gear, and also the pins that connect the wheel drive shafts with wheel axles. Use HUDY
Graphite Grease to lubricate the drive shaft connecting joints and the diff gears.

• Pivot balls and ball-joints will naturally wear for some time and will generate play. If there is too
much play the pivot balls and ball joints need to be replaced.

• If the car is run in wet conditions, apply WD-40® on all drivetrain parts before the run. After the
run, clean and dry the parts again.

HUDY SPRING STEEL™

The HUDY Spring Steel™ used in the car is the strongest and most durable steel material on the RC market. While items made from HUDY Spring Steel™ are still subject to wear, the lifespan is considerably
longer than any other material. As parts made from HUDY Spring Steel™ wear, the brown color will after some time “go down” but it will not affect the strength of the material. The brown color is only a
surface treatment and if the brown color will wear the durability of the part will be still strong.

6

DIFFERENTIAL GEARS

1. FRONT & REAR DIFFERENTIALS

2x

F=R

STEP DETAIL

➊

➋

➌

➍

➎

➎

➎➏

➏

35 5004 XB8 FRONT DIFFERENTIAL 46T - V2 - SET
35 5005 XB8 REAR DIFFERENTIAL 46T - V2 - SET
35 5022 DIFFERENTIAL CASE - V2
35 5031 STEEL DIFF BEVEL & SATELLITE GEARS - V2 (2+4)
35 5046 FRONT/REAR DIFF LARGE BEVEL GEAR 46T - HUDY STEEL

35 5064 FRONT DIFF OUTDRIVE ADAPTER LONG - V2 - HUDY SPRING STEEL™ (2)
35 5065 REAR DIFF OUTDRIVE ADAPTER - V2 - HUDY SPRING STEEL™ (2)
35 5084 F/R DIFF PIN (2)

35 5091 F/R DIFF GASKET (4)

90 3312 HEX SCREW SFH M3x12 (10)
94 0816 HIGH-SPEED BALL-BEARING 8x16x5 BLUE COVERED (2)
96 4030 WASHER S 3.5x12x0.2 (10)
96 4060 WASHER S 6x18x0.2 (10)
97 1060 SILICONE O-RING 6x1.5 (10)
98 0261 PIN 2.5x11.5 (10)

BAG

940816

903312

355046

964060

355031

355031

971060

355022

940816

355091

964030

980261

971060

355084

355064
FRONT

REAR

FRONT

355064
FRONT

355065
REAR

355065
REAR

940816

BB 8x16x5

964060

S 6x18x0.2

971060

O 6x1.5

980261

P 2.5x11.5

Graphite Grease

(HUDY #106210)

Graphite Grease
(HUDY #106210)

Graphite Grease

(HUDY #106210)

➏

• High-performance adjustable front Active Differential™ for improved speed & handling

• Fully adjustable on- and off-power performance using different internal segments and gears

• Improved diff action and traction

• Easy and consistent steering

#355105
ACTIVE FRONT DIFF

#355003
XB8 FRONT/REAR DIFFERENTIAL 46T - V1 - SET

DETAIL

BOOK

SET-UP

Use HUDY Ball-Bearing Grease

#106220 - STANDARD
#106221 - BLUE
#106222 - RED

IMPORTANT!
Use the same diff outdrives on both ends of a diff.

7

DIFFERENTIAL OIL

After assembly the differentials should
have a length of 32.3~32.5 mm
measured from the ends of the installed
ball-bearings. If differentials are
longer, retighten the 4 screws holding
the crown gears.

32.3~32.5 mm

1. FRONT & REAR DIFFERENTIALS

964030

S 3.5x12x0.2

903312

SFH M3x12

2x

➊

➋

➌

➍

➎

➏

➊

➋

➌

➍

940816

BB 8x16x5

964060

S 6x18x0.2

971060

O 6x1.5

980261

P 2.5x11.5

Rear diff:

Silicone oil 3 000cSt
Fill just above the
satellite gears.

Rear diff 3 000cSt

Front diff 5 000cSt

Front diff:

Silicone oil 5 000cSt
Fill just above the
satellite gears.

Graphite Grease

(HUDY #106210)

Graphite Grease
(HUDY #106210)

Graphite Grease

(HUDY #106210)

F=R

REAR

FRONT

Tighten the screws equally

Finish tightening in this order

➎

STEP DETAIL

DETAIL

BOOK

SET-UP

Use HUDY Ball-Bearing Grease

#106220 - STANDARD
#106221 - BLUE
#106222 - RED

IMPORTANT!
Use the same diff outdrives on both ends of a diff.

OIL OIL

Fill the differentials

with oil just above the

satellite gears.

IMPORTANT!

VERY IMPORTANT!

OIL

INCORRECT

CORRECT

Do not overfill the differential.
If there is too much oil in the
differential, it may leak after
it cools down after use.

Use the following silicone oils included in the kit for initial settings:

FRONT diff: 5 000cSt / REAR diff: 3 000cSt

#107865 HUDY Ultimate Digital Pocket Scale 300g±0.01g

To ensure you have the same amount of oil from rebuild to rebuild, do the following:

1. Put the diff (without oil) on the scale and check the weight:

- REAR DIFF approx. 39.30g

- FRONT DIFF approx. 40.10g

2. Slowly pour oil into the diff and watch the weight.
Add 2.70g of oil into the diff. The approximate
weight of the diff+oil is REAR DIFF approx. 42.00g
and FRONT DIFF approx. 42.80g

FRONT

FRONT

REAR

g

g

g

g

REAR

39.30g + 2.70g = 42.00g

40.10g + 2.70g = 42.80g

OIL

FRONT DIFF

REAR DIFF

39.30

40.10

42.00

42.80

8

DIFFERENTIAL GEARS

355072

940816

903312

355050

971060

355031

355031

355031

964030

971060

355022

940816

964060

964060

964030

355031

980261

355084

355072

355091

• High-performance adjustable center Active Differential™ for improved speed & handling

• Fully adjustable on- and off-power performance using different internal segments and gears

• Increased forward traction and stability

• Easy and consistent steering

#355106
ACTIVE CENTER DIFF

1. CENTER DIFFERENTIAL

BAG

➊

➋

➌

➍

➎

➏

35 5022 DIFFERENTIAL CASE - V2
35 5031 STEEL DIFF BEVEL & SATELLITE GEARS - V2 (2+4)
35 5050 CENTER DIFF SPUR GEAR 46T
35 5072 LARGE CENTER DIFF OUTDRIVE ADAPTER - HUDY STEEL (2)
35 5084 DIFF PIN (2)
35 5091 DIFF GASKET (2)

90 3312 HEX SCREW SFH M3x12 (10)
94 0816 HIGH-SPEED BALL-BEARING 8x16x5 BLUE COVERED (2)
96 4030 WASHER S 3.5x12x0.2 (10)
96 4060 WASHER S 6x18x0.2 (10)
97 1060 SILICONE O-RING 6x1.5 (10)
98 0261 PIN 2.5x11.5 (10)

940816

BB 8x16x5

971060

O 6x1.5

964060

S 6x18x0.2

Graphite Grease

(HUDY #106210)

Graphite Grease

(HUDY #106210)

STEP DETAIL

➎

➏

➏➎

DETAIL

BOOK

SET-UP

Use HUDY Ball-Bearing Grease

#106220 - STANDARD
#106221 - BLUE
#106222 - RED

#355012 or #355013
CENTER DIFFERENTIAL - SET

980261

P 2.5x11.5

CENTER DIFF SPUR GEAR

#355048 48T OPTION
#355049 47T OPTION
#355050 46T INCLUDED
#355051 45T OPTION
#355052 44T OPTION

* CENTER DIFF SPUR GEAR - LARGE

#355056 46T OPTION
#355057 47T OPTION
#355058 48T OPTION

* must be used with #355013 CENTRAL
DIFFERENTIAL - LARGE - SET

CENTER DIFF SPUR GEAR

#355048 48T OPTION
#355049 47T OPTION
#355050 46T INCLUDED
#355051 45T OPTION
#355052 44T OPTION

* CENTER DIFF SPUR GEAR - LARGE

#355056 46T OPTION
#355057 47T OPTION
#355058 48T OPTION

* must be used with #355013 CENTRAL
DIFFERENTIAL - LARGE - SET

9

DIFFERENTIAL OIL

971060

O 6x1.5

964060

S 6x18x0.2

940816

BB 8x16x5

➊

➋

➍

➎

➏

➌

Graphite Grease
(HUDY #106210)

Graphite Grease
(HUDY #106210)

Use HUDY Ball-Bearing Grease

#106220 - STANDARD
#106221 - BLUE
#106222 - RED

32.3~32.5 mm

After assembly the differential
should have a length of 32.3~32.5
mm measured from the ends of
the installed ball-bearings. If
differential is longer, retighten the
4 screws holding the spur gear.

1. CENTER DIFFERENTIAL

964030

S 3.5x12x0.2

903312

SFH M3x12

Tighten the screws equally Finish tightening in this order

➊

➋

➌

➍

Use the following silicone oil included in the kit for initial setting:

Center diff: 7 000cSt

BOOK

SET-UP

Fill the differentials

with oil just above the

satellite gears.

IMPORTANT!

VERY IMPORTANT!

OIL

INCORRECT

CORRECT

Do not overfill the differential.
If there is too much oil in the
differential, it may leak after
it cools down after use.

980261

P 2.5x11.5

#107865 HUDY Ultimate Digital Pocket Scale 300g±0.01g

1. Put the diff (without oil) on the scale and
check the weight (approximately 39g).

2. Slowly pour oil into the diff and watch the
weight. Add 2.70g of oil into the diff. The
approximate weight of the diff+oil is 41.70g.

To ensure you have the same amount of oil from rebuild to rebuild, do the following:

OIL

39.00g + 2.70g = 41.70g

CENTER DIFF

Center diff 7 000cSt

g

41.70

g

39.00

➎

STEP DETAIL

DETAIL

OIL

Center diff:

Silicone oil 7 000cSt

Fill to just above the satellite gears.

10

2. FRONT TRANSMISSION

940816

BB 8x16x5

902312

SH M3x12

980314

P 3x14

901404

SB M4x4

Graphite Grease

(HUDY #106210)

Apply oil from inside
to prevent breakage
of the rubber boot.

SHORT CVD DRIVE SHAFT

BEFORE inserting the clip on the central CVD shaft joint, apply a small
amount of threadlock on the area where the clip goes.

AFTER inserting the clip on the central CVD shaft joint, turn the clip so that
the slot is 90°from the pin. This will prevent the pin from opening the clip.

PIN

DETAIL

Cut on both front

and rear bulkhead blocks

DETAIL

➊

➊

➋

➋

➌

➌

➍

➍

STEP DETAIL

➍

STEP

DETAIL

➎

355004
FRONT DIFF

902312

35 2006 XB8’16 DIFF BULKHEAD BLOCK SET FRONT/REAR
35 5004 XB8 FRONT DIFFERENTIAL 46T - V2 - SET
35 5114 BEVEL DRIVE GEAR 14T
35 5236 CVD DRIVE SHAFT COUPLING - HUDY SPRING STEEL™
35 5416 CENTRAL CVD SHAFT UNIVERSAL JOINT - HUDY SPRING STEEL™
35 5427 FRONT CENTRAL CVD DRIVE SHAFT - HUDY SPRING STEEL™
35 5471 DRIVE SHAFT LOCKING RING (2)

35 5472 DRIVE SHAFT BOOT (2)

90 1404 HEX SCREW SB M4x4 (10)
90 2312 HEX SCREW SH M3x12 (10)
94 0816 HIGH-SPEED BALL-BEARING 8x16x5 RUBBER SEALED (2)
98 0314 PIN 3x14 (10)

BAG

➎

➎

➎

SHORT

FRONT DIFF 5 000 cSt

Graphite Grease

(HUDY #106210)

Push joint against gear to remove gap.
Tighten setscrew onto gear flat spot.

The ring can be assembled by hand,
but for easy disassembly we recommend
using snap ring pliers (HUDY #189040)

355472

355471

355427

355236

355416

352006

355114

352006

980314

901404

940816

940816

step 1 step 2

step 3

OIL

DETAIL

#355426
FRONT UNIVERSAL CENTRAL DRIVE SHAFT - HUDY SPRING STEEL™ - SET

Follow the TECH TIP on page 5
for drive shaft pin servicing

Use HUDY Ball-Bearing Grease

#106220 - STANDARD
#106221 - BLUE
#106222 - RED

NOTE

ORIENTATION

11

2. REAR TRANSMISSION

940816

BB 8x16x5

902312

SH M3x12

980314

P 3x14

901404

SB M4x4

Apply oil from inside to prevent
breakage of the rubber boot.

Graphite Grease

(HUDY #106210)

NOTE

ORIENTATION

LONG CVD DRIVE SHAFT

Cut on both front and
rear bulkhead blocks

BEFORE inserting the clip on the central CVD shaft joint, apply a small amount of
threadlock on the area where the clip goes.

AFTER inserting the clip on the central CVD shaft joint, turn the clip so that the slot is
90°from the pin. This will prevent the pin from opening the clip.

Follow the TECH TIP on page 5
for drive shaft pin servicing.

DETAIL

DETAIL

DETAIL

BAG

➊

➊

➋

➋

➌

➌

➍

➍

STEP DETAIL

➎

355005
REAR DIFF

902312

35 2006 XB8’16 DIFF BULKHEAD BLOCK SET FRONT/REAR
35 5005 XB8 REAR DIFFERENTIAL 46T - V2 - SET
35 3050 XB8 ALU REAR SHOCK TOWER - CNC MACHINED 7075 T6 (4MM)
35 5114 BEVEL DRIVE GEAR 14T
35 5236 CVD DRIVE SHAFT COUPLING - HUDY SPRING STEEL™
35 5416 CENTRAL CVD SHAFT UNIVERSAL JOINT - HUDY SPRING STEEL™
35 5625 REAR CENTRAL CVD DRIVE SHAFT - HUDY SPRING STEEL™

➎

➎

➎

LONG

Graphite Grease

(HUDY #106210)

NOTE
ORIENTATION

REAR DIFF 3 000 cSt

The ring can be assembled by hand,
but for easy disassembly we recommend
using snap ring pliers (HUDY #189040)

Push joint against gear to remove gap.
Tighten setscrew onto gear flat spot.

902312

355472

355471

355625

355236

355416

352006

355114

352006

353050

980314

901404

940816

940816

PIN

STEP DETAIL

➍

step 1 step 2

step 3

OIL

35 5471 DRIVE SHAFT LOCKING RING (2)
35 5472 DRIVE SHAFT BOOT (2)

90 1404 HEX SCREW SB M4x4 (10)
90 2312 HEX SCREW SH M3x12 (10)
94 0816 HIGH-SPEED BALL-BEARING 8x16x5 RUBBER SEALED (2)
98 0314 PIN 3x14 (10)

#353052
XB8 GRAPHITE REAR SHOCK TOWER 3.5MM

#355626
REAR UNIVERSAL CENTRAL DRIVE SHAFT - HUDY SPRING STEEL™ - SET

#353052
XB8 GRAPHITE REAR SHOCK TOWER 3.5MM

step 4

Use HUDY Ball-Bearing Grease

#106220 - STANDARD
#106221 - BLUE
#106222 - RED

12

BAG

3. REAR SUSPENSION

909395

353428

353327

352314

353371

352006

909372

353316

352314

357212

902318

353115

903308

901305

901303

333450

352470

901312

352470

353115

352460

33 3450 ANTI-ROLL BAR BALL JOINT 5.8 MM (2)
35 2006 XB8’16 DIFF BULKHEAD BLOCK SET FRONT/REAR
35 2314 COMPOSITE ECCENTRIC BUSHINGS - V2 (2)
35 2460 PIVOT BALL 5.8 (10)
35 2470 BALL JOINT 5.8 (8)
35 3115 COMPOSITE REAR LOWER SUSPENSION ARM
35 3316 ALU REAR LOWER SUSP. HOLDER - FRONT - SQUARE ADJ. ROLL CENTER
35 3327 ALU REAR LOWER SUSP. HOLDER - REAR - SQUARE ADJ. ROLL CENTER
35 3371 SET OF COMPOSITE LOWER ARM SHIMS
35 3428 REAR ANTI-ROLL BAR 2.8MM
35 7212 LOWER INNER PIVOT PIN F+R (2)

901408

90 1303 HEX SCREW SB M3x3 (10)
90 1305 HEX SCREW SB M3x5 (10)
90 1312 HEX SCREW SB M3x12 (10)
90 1408 HEX SCREW SB M4x8 (10)
90 2318 HEX SCREW SH M3x18 (10)
90 3308 HEX SCREW SFH M3x8 (10))
90 9372 SCREW PHILLIPS SS 3.5x22 (10)
90 9395 SCREW PHILLIPS SS 3.5x45 (10)

REAR ANTI-ROLL BARS

#353418 ø1.8mm OPTION
#353420 ø2.0mm OPTION
#353422 ø2.2mm OPTION
#353424 ø2.4mm OPTION
#353425 ø2.5mm OPTION
#353426 ø2.6mm OPTION
#353428 ø2.8mm INCLUDED
#353430 ø3.0mm OPTION

#353113 XB8’16 COMPOSITE REAR LOWER SUSPENSION ARM - RIGHT
#353123 XB8’16 COMPOSITE REAR LOWER SUSPENSION ARM - LEFT
#353317 XB8 ALU REAR LOWER SUSP. HOLDER - FRONT - SQUARE ADJ. ROLL CENTER
#353325 XB8 ALU REAR LOWER SUSP. HOLDER - REAR - SQUARE ADJ. ROLL CENTER

#353116 COMPOSITE REAR LOWER SUSPENSION ARM - HARD

#333451
ALU ANTI-ROLL BAR PIVOT BALL 5.8 MM - SWISS 7075 T6 - HARDCOATED (2)

#902407
HEX SCREW SH M4x7 WITH HEX FROM BOTTOM (4)

13

TOE-IN

ANTI-SQUAT

ROLL CENTER DOWNSTOP

WHEELBASE

TRACK WIDTH

3. REAR SUSPENSION

909395

SS 3.5x45

909372

SS 3.5x22

901408

SB M4x8

353371

SHIM 4x10x2

Check for free movement

REAR ARM ORIENTATION

(HUDY #107634)

ARM REAMER

If the suspension arm does not move
freely use a HUDY Arm Reamer to
resize the holes of the arms.

➊

➊

➋

➌

➌

➍

➍

➎

2mm

2mm

4x8mm

RR

RF

All possible mounting

alternatives of eccentric bushings

Push the arm from both sides to create play

INITIAL SETTING

RF

0.5°

1°

INITIAL SETTING

RR

0.5°

1°

DETAIL DETAIL DETAIL

DETAIL

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 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 Off-Road Set-up Book (#209099).

The tables describe the amounts of rear anti-squat, rear toe-in, rear track-width change depending
on the combinations of eccentric bushings used with 0 and 1mm, 1° offset. The 0.5mm, 0.5° represents
the half change.

Anti-Squat Example:

0(RR) - 0 (RF) = 3°

0(RR) - 0.5 (RF) = 3.5°

0(RR) - 1 (RF) = 4°

ANTI-SQUAT ROLL CENTER TRACK-WIDTH TOE-IN

RR RR RR RRRF RF RF RF(°) (mm) (mm) (°)

=3°

=4°

=2°

=4°

=3°

=5°

=2°

=3°

=1°

= 3°

= 3.5°

= 4°

=0

mm

=1mm

=-1mm

=308

=306

=310

=3°

=4°

=2°

=2°

=3°

=1°

=4°

=5°

=3°

3.5x45mm

3.5x22mm

BOOK

SET-UP

NOTE
ORIENTATION

NOTE
ORIENTATION

3.0mm

DOWNSTOP SETTING

DETAIL

2.0mm Allen

#902407

Downstop screw
for fine tuning.

14

3. REAR SUSPENSION

ANTI-ROLL BAR

901303

SB M3x3

901305

SB M3x5

901312

SB M3x12

902318

SH M3x18

903308

SFH M3x8

REAR ANTI-ROLL BARS

#353418 ø1.8mm OPTION
#353420 ø2.0mm OPTION
#353422 ø2.2mm OPTION
#353424 ø2.4mm OPTION
#353425 ø2.5mm OPTION
#353426 ø2.6mm OPTION
#353428 ø2.8mm INCLUDED
#353430 ø3.0mm OPTION

1.5mm

6mm

DETAIL

-2~0mm

L=R

STEP DETAIL

➍

DETAIL

Loosen the 3x5 setscrew if the
anti-roll bar does not turn freely

Step

➊

DETAIL

Step check for free movement

➊

DETAIL

INITIAL SETTING

DETAIL

L=R

2x

Follow the TECH TIP on page 5 to install the pivot balls

➋

➊

➌

3x5mm

3x8mm

3x3mm

3x18mm

BOOK

SET-UP