Xray X12 User manual

INSTRUCTION MANUAL

FOR X12'23 EU & US EDITION

2

BEFORE YOU START

This is a high-competition, high-quality RC 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 XRAY, 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.

Carefully read 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 this is

not what you wanted or expected, do not continue any further. Your hobby dealer

can not accept your 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: 421-32-7401100

Fax: 421-32-7401109

E-mail: info@teamxray.com

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 info@teamxray.com. 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: (214) 744-2400

Fax: (214) 744-2401

E-mail: [email protected]

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 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.

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.

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.

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 info@teamxray.com, or contact

the XRAY distributor in your country.

WARRANTY

4

ALSO REQUIRED

INCLUDED

Transmitter

Steering Servo

Receiver

Lexan™ Paint

Battery Charger

Speed Controller

LiPo Battery

Electric Motor & Pinion Gear

with Setscrew

Double-sided Tape

(HUDY #107875)

OILOIL

Bearing Oil

(HUDY #106230)

OIL

450cSt (#106345)

HUDY Premium Silicone Oils

* Kit includes smaller but sufficient amount

of oil and grease to build the car.

10.000cSt (#106510)

HUDY Premium Silicone Oils

TOOLS REQUIRED

Allen 1.5mm

(#111545 - HUDY EXCLUSIVE Limited Edition)

Allen 2.0mm

(#112045 - HUDY EXCLUSIVE Limited Edition)

Allen 2.5mm

(#112545 - HUDY EXCLUSIVE Limited Edition)

Socket 5.5mm

(#175535 - HUDY EXCLUSIVE Limited Edition)

Arm Reamer 4.0mm

(#107644 - HUDY EXCLUSIVE Limited Edition)

Reamer

(#107602 - HUDY EXCLUSIVE Limited Edition)

Turnbuckle Wrench 4mm

(HUDY #181040)

Special Tool for Turnbuckles, Nuts

(HUDY #181090)

Pocket Hobby Knife

(HUDY #188981)

Scissors

(HUDY #188990)

Side Cutters

(HUDY #189010)

Combination Pliers

(HUDY #189020)

Professional Multi Tool

(HUDY #183011)

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 A - indicates parts that are included in the bag marked for the section.STYLE A

STYLE B - indicates parts that are included in the box.

STYLE C - indicates parts that are already assembled from previous steps.

COLOR INDICATIONS

371119

378002

371212

NOT INCLUDED

XRAY offers wide range of

OPTIONAL TUNING PARTS

which are listed in a table like this. Please refer to

the exploded view of each main section to verify

which part is included in the kit while all other parts

are available only as an optional part and must be

purchased separately.

SAMPLE OF OPTIONAL PARTS

#37XXXX TYPE1 OPTION 1

#37XXXX TYPE2 OPTION 2

#37XXXX TYPE3 INCLUDED

Tires

1/12 Bodyshell

VIDEO TECH TIP

▶

When a

QR CODE

is found in

the instruction manual, scan

the code to be directed to an

online video that explains

that feature or adjustment

in more detail. Make sure to

watch all of the instructional

videos to get the most

performance out of your car.

Alexander Hagberg

(Factory Driver)

5

BUILD VIDEO

▶

FRONT SUSPENSION

1. FRONT SUSPENSION

372293

372292

903308

371212

903310

303122

303120

373244

372320

902308

901308

902305

376366-K

962042

962043

372187

372297

372298

372224

960031

372283

372282

372129

960031

902305

372653

303123

375220

960032

372090

372214

902306

372272

372271

371120

903308

371119

970050

372109

372294

376366-K

BAG

303120

SET OF AL

U SHIM (0.5MM, 1.5MM, 2.5MM)

303122

AL

U SHIM 3x6x1.0MM (10)

303123

AL

U SHIM 3x6x2.0MM (10)

371212

GRAPHITE BUMPER L

OWER HOLDER 2.5MM

372090

FRONT BRACE - GRAPHITE 2.2MM

372109

STEEL L

OWER SUSPENSION ARM BRACE (2)

372129

GRAPHITE L

OWER SUSPENSION ARM PLATE FOR STEERING LOCK 2.5MM

372187

FRONT COIL SPRING FOR 4MM PIN C=1.8-2.0 - SIL

VER (2)

FRONT COIL SPRING FOR 4MM PIN C=1.8-2.0 - SILVER (2)FRONT COIL SPRING FOR 4MM PIN C=1.8-2.0 - SIL

372214

COMPOSITE STEERING BL

OCK FOR 4MM KING PIN - RIGHT - GRAPHITE

372224

COMPOSITE STEERING BL

OCK FOR 4MM KING PIN - LEFT - GRAPHITE

372271

COMPOSITE STEERING BL

OCK BACKSTOP (2)

372272

AL

U STEERING LOCK (2)

372282

X12 KING PIN 4MM - 1° - NICKEL COA

TED (2)

X12 KING PIN 4MM - 1° - NICKEL COATED (2)X12 KING PIN 4MM - 1° - NICKEL COA

372283

X12 KING PIN 4MM - 1.5° - NICKEL COA

TED (2)

X12 KING PIN 4MM - 1.5° - NICKEL COATED (2)X12 KING PIN 4MM - 1.5° - NICKEL COA

372292

STEEL SHIM 0.2MM - SIL

VER (2)

STEEL SHIM 0.2MM - SILVER (2)STEEL SHIM 0.2MM - SIL

372293

STEEL SHIM 0.4MM - BLACK (2)

372294

STEEL SHIM 0.6MM - GOLD (2)

372297

AL

U SHIM 4x6x1.0MM (10)

372298

AL

U SHIM 4x6x0.5MM (10)

372320

COMPOSITE ARM BUSHING (4)

372653

BALL END 4.2MM WITH 8MM THREAD (2)

373244

BALL END 6.0MM WITH HEX - HUD

Y SPRING STEEL™ (2)

375220

FRONT WHEEL AXLE (2)

376366-K

AL

U MOUNT 6.0MM - BLACK (2)

901308

HEX SCREW SB M3x8 (10)

902305

HEX SCREW SH M3x5 (10)

902306

HEX SCREW SH M3x6 (10)

902308

HEX SCREW SH M3x8 (10)

903308

HEX SCREW SFH M3x8 (10)

903310

HEX SCREW SFH M3x10 (10)

960031

AL

U NUT M3 (10)

960032

NUT M3 (10)

962042

W

ASHER S 4x6x0.1 (10)

962043

W

ASHER S 4x6x0.2 (10)

970050

O

-RING 5x1 (10)

371119 X12 ALU SOLID CHASSIS 2.0MM - 7075 T6

371120 X12 ALU FLEX CHASSIS 2.0MM - 7075 T6

FRONT COIL SPRINGS

#372186

C=1.5-1.7

GOLD OPTION

#372187

C=1.8-2.0

SILVER INCLUDED

#372188

C=2.1-2.3

BLACK OPTION

#371121

GRAPHITE CHASSIS

CAMBER - KING PIN AXLES

#372285 0.5º 4 DOTS OPTION

#372282 1º 3 DOTS INCLUDED

#372283 1.5º 1 DOT INCLUDED

#372284 2º 2 DOTS OPTION

6

VIDEO TECH TIP

▶

STEERING SYSTEM

970050

O 5x1

Install the balls with Professional Multi Tool.

(HUDY #183011)

2x

1. FRONT SUSPENSION

CUTAWAY VIEW

DETAIL

NOTE

ORIENTATION

NOTE

ORIENTATION

10mm = 27° steering lock

11mm = 24° steering lock

9.2mm

Adjust the position of the stopper to adjust the

maximum amount of steering lock.

901308

SB M3x8

2x

(INITIAL SETTING)

The front suspension arm includes adjustable steering

lock limiters. These physically limit the maximum steering

angle and improve consistency during cornering.

902305

SH M3x5

It is recommended to start with:

= 27

º steering lock

= 24

º steering lock

Greater steering lock improves off power steering

and reactivity in tight corners but can make the

car more difficult to drive in chicanes.

(Steering lock)

7

1. FRONT SUSPENSION

CASTER ADJUSTMENT

VIDEO TECH TIP

▶

1mm

EXTRA SHIM UNDER FRONT BALL

SHIM DIFFERENCE CASTER

1mm 1.5º

2mm 3º

3mm 4.5º

4mm 6º

5mm 7.5º

2x

903310

SFH M3x10

(INITIAL SETTING)

ALTERNATIVE FRONT POSITION

LONG WHEELBASE

ALTERNATIVE REAR POSITION

SHORT WHEELBASE

FRONT WHEELBASE ADJUSTMENT

Longer wheelbase is recommended for bigger tracks

with longer sweepers. Makes the car more stable and

easier to drive.

Shorter wheelbase allows the car to rotate better in corner

to maintain cornering speed. Recommended for tight,

technical tracks or tracks with numerous 180° hairpin

corners.

CASTER ADJUSTMENT SETTING

Caster is adjusted by the shims placed

under front ball.

Please see the table beneath the to

understand how to set caster.

2.0mm

2.0 – 0 = 2.0mm

(Shim Difference and

Caster 3º

)

0mm

CASTER

903308

SFH M3x8

3x8mm

3x10mm

RIDE HEIGHT AND CASTER ADJUSTMENT

The number of washers and shims used

affects the ride height and caster of the

car, so determine the proper amount of

shimming based on a tire diameter and

wished caster.

INITIAL SETTING

0.2mm - SILVER

0.4mm - BLACK

0.6mm - GOLD

DETAIL

1mm

(INITIAL SETTING)

303120

SHIM 3x6x0.5

303122

SHIM 3x6x1

#371121

GRAPHITE CHASSIS

NOTE

ORIENTATION

303123

SHIM 3x6x2

8

1. FRONT SUSPENSION

902305

SH M3x5

902308

SH M3x8

SOFT

- (NO BRACE)

Makes the car initially less responsive, but will provide

more mechanical grip. Recommended for low-grip carpet

conditions, and asphalt.

MEDIUMSOFT STIFF

MEDIUM

Brace mounted to the graphite arm with posts provides

a balance between initial response and mechanical grip.

Recommended for most conditions.

STIFF

Both braces mounted to the graphite arm gives

maximum responsiveness but decreases mechanical grip.

Recommended for high-traction conditions (such as US

black carpet).

2x

Marked “R“

Marked “L“

2mm

8mm THREAD

NOTE

ORIENTATION

960031

ALU N M3

303123

SHIM 3x6x2

FRONT SUSPENSION FLEX SETTING

(INITIAL SETTING)

FORWARD POSITION (INITIAL SETTING)

Initial setting for most tracks provides a neutral steering

feel similar to that of the old X12. Provides a good

balance between initial response and cornering speed.

REARWARD POSITION

Makes the car freer because of increased Ackermann

(less steering lock on the outer wheel in relation to the

inner). Recommended for medium- to high-traction

tracks.

STEERING BLOCK

BUMPSTEER SETTING

The thickness of shims changes the

steering linkage angle. Thicker shims

gives decreased in-corner steering, but car

becomes easier to drive.

Use 2mm bump steer as

INITIAL SETTING.

The steering link mounting position on the steering block has a direct effect

on the Ackermann.

Please see the ACKERMANN SETTING page: 27.

Arm Reamer 4.0mm (HUDY #107644)

4.0mm

If the suspension arm does not move

freely, use a HUDY Arm Reamer to size

the holes of the arms.

DETAIL

When using rearward hole, you can reinforce the steering

block (for hard crashes) by installing an M3x3 setscrew in

the forward hole.

M3x3 #901303

(NOT INCLUDED)

3x5mm

3x6mm

3x8mm

3x6mm

902306

SH M3x6

ALU NUTS M3

#296530-B BLUE OPTION

#296530-K BLACK OPTION

#296530-O ORANGE OPTION

#960031 SILVER INCLUDED

9

0.5º

2º

1º

2x

The

DOT

must be oriented

towards

OUTSIDE

.

The

DOT

must be oriented

towards

OUTSIDE

.

(INITIAL SETTING) (INITIAL SETTING)(INITIAL SETTING) (INITIAL SETTING)

INCLUDED INCLUDEDINCLUDED INCLUDEDOPTION OPTIONOPTION OPTION

1. FRONT SUSPENSION

NOTE ORIENTATION

CAMBER ADJUSTMENT

EU Edition kits include the 1.5º kingpins; US

Edition kits include the 1.0º kingpins. These are

the recommended start points for low to medium

grip (EU) or high grip (US) conditions. Optional

kingpins are available to adjust camber if needed.

DECREASING THE CAMBER ANGLE

will decrease the steering which will make the car easier

to drive and also helps to prevent traction rolling.

VIEW

1 DOT

3 DOTS

2 DOTS

4 DOTS

1.5º

1º

2º

0.5º

INCREASING THE CAMBER ANGLE

will increase the car steering, however, will make the

car more difficult to drive.

C

A

M

B

E

R

C

A

M

B

E

R

903308

SFH M3x8

960031

ALU N M3

CAMBER - KING PIN AXLE

#372285 0.5º 4 DOTS OPTION

#372282 1º 3 DOTS INCLUDED

#372283 1.5º 1 DOT INCLUDED

#372284 2º 2 DOTS OPTION

ALU NUTS M3

#296530-B BLUE OPTION

#296530-K BLACK OPTION

#296530-O ORANGE OPTION

#960031 SILVER INCLUDED

10

VIDEO TECH TIP

▶

FRONT KINGPIN OIL

VIDEO TECH TIP

▶

FRONT DROOP & RIDE

HEIGHT

372297

SHIM 4x6x1

372298

SHIM 4x6x0.5

962042

S 4x6x0.1

962043

S 4x6x0.2

1. FRONT SUSPENSION

Arm Reamer 4.0mm

(HUDY #107644)

4.0 mm

The front suspension parts were updated

to eliminate play to ensure better steering

performance. The updated holes in the

steering blocks may cause a tighter ﬁt

of the kingpin in the steering block; it is

important that the steering block moves

freely but without excessive play. If the

kingpin does not insert into the steering

block easily, use a 4mm Arm Reamer

to enlarge the hole. Be very careful to

remove only enough material so you can

insert the kingpin without a lot of force.

Moves freely

0.2mm

0.1mm

ALU SHIMS

STEEL SHIMS

1.0mm

OIL

10K cSt

(INCLUDED)

902305

SH M3x5

FRONT COIL SPRINGS

#372186

C=1.5-1.7

GOLD OPTION

#372187

C=1.8-2.0

SILVER INCLUDED

#372188

C=2.1-2.3

BLACK OPTION

SOFTER SPRINGS

Makes the car easier to drive over bumps and

increases steering as it makes the car roll more,

especially in the middle of a corner.

HARDER SPRINGS

Makes the car more responsive and increases initial

steering. Recommended for high-traction and ﬂat

tracks.

MORE DROOP

will make the car initially less responsive, but it will give the car more front grip,

especially in the middle of the corner. The car will be less precise and more difﬁcult to drive, because of

increased roll. More droop is best suited for low- to medium-traction carpet, or asphalt.

LESS DROOP

will decrease roll but the car will change direction quicker. Less droop is best suited

for high-traction surfaces such as US black carpet, especially when traction rolling is an issue (and

particularly when a rear solid axle is used).

FRONT DROOP

Front droop is adjusted by the preload of the front spring.

More shims between the steering block and the spring will

increase preload - and decrease droop. Removing shims will

have the opposite effect.

RIDE HEIGHT ADJUSTMENT

INITIAL SETTING

above upper arm (0.3mm)

below steering block (2.0mm)

FRONT DAMPING with different oils.

TRACK CONDITIONS

Thinner oil is recommended for low-traction

tracks, while thicker oil is recommended for

high-traction tracks.

DAMPING

Using thicker oil on the king pin axle makes

the car less responsive but easier to drive.

Thicker oil oil also increases stability but

decreases cornering speed.

LOW traction & bumpy track

7K ~ 10K cSt

HIGH traction & smooth track

15K ~ 30K cSt

OIL

The thickness of the shims used

affects the ride height and

droop of the front suspension, so

determine the proper amount

of shims based on tire diameter

and desired droop.

RIDE HEIGHT AND DROOP ADJUSTMENT SHIMS:

The ride height is adjusted with the supplied long shims that can

be ﬁtted under the arms (silver/black/gold). I recommend using

as low of a ride height as you possibly can, unless you race on a

bumpy or rough surface, then the car can beneﬁt from having a

slightly higher ride height, to increase stability, and improve the

handling over bumps.

The front axle height can be adjusted with shims under the

steering block. You can‘t change the roll center on the front end

of the X12, simply because there is no upper arm. Adding shims

under the steering block (raising the steering block) will raise the

front axle height, and at the same time, decrease bump steer.

Removing shims will lower the steering block, and increase bump

steer. For more information about Ackermann & Bumpsteer, see

PAGE 27 (servo mounting).

I recommend using the kit shimming for the front steering block -

this will be a good basic setting for most conditions.

Alexander Hagberg

(Factory driver)

11

BUILD VIDEO

▶

REAR SUSPENSION

2. REAR SUSPENSION

BAG

303120

SET OF AL

U SHIM (0.5MM, 1.5MM, 2.5MM)

303122

AL

U SHIM 3x6x1.0MM (10)

303123

AL

U SHIM 3x6x2.0MM (10)

303127

AL

U SHIM 3x6x4.0MM (10)

303241

BALL UNIVERSAL 5.8 MM HEX (4)

371190

COMPOSITE POD LINK (2)

372649

BALL END 4.2MM WITH 4MM THREAD (2)

372653

BALL END 4.2MM WITH 8MM THREAD (2)

372662

COMPOSITE BALL JOINT 4.2 MM (4)

372911

AL

U REAR BULKHEAD - MOTOR - RIGHT

372921

AL

U REAR BULKHEAD - LEFT

373052

GRAPHITE REAR BULKHEAD BRACE 2.2MM

373076

AL

U REAR BRACE MOUNT 9MM - BLACK (2)

373077

AL

U REAR BRACE MOUNT 12MM - BLACK (2)

373087

GRAPHITE BA

TTERY BACKSTOP 2.2MM

GRAPHITE BATTERY BACKSTOP 2.2MMGRAPHITE BA

373095

AL

U CHASSIS PIVOT HOLDER - SWISS 7075 T6

373097

COMPOSITE PIVO

T BRACE BUSHING

373098

AL

U POD PLATE PIVOT HOLDER - SWISS 7075 T6

373556

GRAPHITE REAR POD UPPER PLA

TE 2.5MM

GRAPHITE REAR POD UPPER PLATE 2.5MMGRAPHITE REAR POD UPPER PLA

373585

SIDE SPRING C=0.9 - GOLD (2)

373591

COMPOSITE SIDE SPRING HOLDER (2)

376111

GRAPHITE REAR BRACE WITH BA

TTERY BACKSTOP 2.5MM

GRAPHITE REAR BRACE WITH BATTERY BACKSTOP 2.5MMGRAPHITE REAR BRACE WITH BA

376170

GRAPHITE BA

TTERY CLAMP 2.2MM (2)

GRAPHITE BATTERY CLAMP 2.2MM (2)GRAPHITE BA

376290

L

OW PROFILE ALU SELF-LOCKING NUT (2)

376330

GRAPHITE SIDE BRACE 2.5MM - RIGHT & LEFT

378141

AL

U SIDE TUBE (2)

378153

COMPOSITE SIDE TUBE SHAFT (2)

901308

HEX SCREW SB M3x8 (10)

902256

HEX SCREW SH M2.5x6 (10)

902258

HEX SCREW SH M2.5x8 (10)

902304

HEX SCREW SH M3x4 - ST

AINLESS (10)

HEX SCREW SH M3x4 - STAINLESS (10)HEX SCREW SH M3x4 - ST

902305

HEX SCREW SH M3x5 (10)

902306

HEX SCREW SH M3x6 (10)

902310

HEX SCREW SH M3x10 (10)

903305

HEX SCREW SFH M3x5 (10)

903306

HEX SCREW SFH M3x6 (10)

371162 ALU 2.0MM REAR POD LOWER PLATE - 7075 T6

372911

372921

376290

372649

902306

373591

373585

373077

303241

373076

903306

303241

903306

376290

373052

903305

303127

372653

372662

378141

378153

902310

373087

376290

902306

901308

376111

902258

371190

902258

371190

902305

303120

376290

376170

303120

303127

376290

373095

376330

373097

303122

376330

903306

902256

303123

372653

303127

902306

373556

902305

373098

903305

902304

371162

#371164

GRAPHITE REAR POD LOWER PLATE

12

VIDEO TECH TIP

▶

903306

SFH M3x6

(INITIAL SETTING)

VIDEO TECH TIP

▶

REAR POD & PIVOT

BUILD

REAR POD & PIVOT

BUILD

2. REAR SUSPENSION

903305

SFH M3x5

903305

SFH M3x5

902304

SH M3x4

NOTE

ORIENTATION

The amount of shims has a direct

effect on the pivot mounting position.

Please see: PAGE 13

INITIAL SETTING

- MIDDLE pivot

mounting

(1+2mm shim)

NOTE ORIENTATION

1mm

2mm

303122

SHIM 3x6x1

303123

SHIM 3x6x2

8mm THREAD

NOTE ORIENTATION

#371162

GRAPHITE REAR POD LOWER PLATE

13

VIDEO TECH TIP

▶

REAR POD & PIVOT

BUILD

ROLL CENTER ADJUSTMENT

The roll center can be adjusted by adding or

removing shims from beneath the aluminum pivot

mounts.

LOWER ROLL CENTER

(INITIAL SETTING - NO SHIMS) will give more

traction and increase chassis roll.

HIGHER ROLL CENTER

(adding shims)

will increase steering by making

the car rotate more on and off-power.

IMPORTANT! Always use same shim thickness on

both sides of both aluminum holders.

DO NOT use shims for

INITIAL SETTING.

DO NOT use shims for

INITIAL SETTING.

NOTE ORIENTATION

1mm

2mm

1mm

2mm

2x

2. REAR SUSPENSION

DO NOT tighten fully,

pivotballs must move freely.

DO NOT tighten fully,

pivotballs must move freely.

902258

SH M2.5x8

902256

SH M2.5x6

THREAD LOCK

PIVOT MOUNTING ALTERNATIVE

REARWARD:

Pivot mounted in rearward chassis holes, and 1mm shim

used under the pivot ball. The rearvard pivot mounting gives

the most neutral handling. Recommended for low to medium

traction tracks.

MIDDLE:

(INITIAL SETTING)

Pivot mounted in middle chassis holes, with 3mm shims

under the pivot ball. The middle pivot position gives a good

balance between front and rear traction and is well suited

for most conditions.

FORWARD:

Pivot mounted in forward chassis holes, with 5mm shims

under the pivot ball. improves rotation thanks to the longer

rear pod geometry. gives the most initial steering as well as

rotation, especially suited for high traction conditions such

as US black carpet.

Ensure free, smooth

movement.

Tighten the screw enough

to remove excess play, while

ensuring that the pod plate can

turn freely.

303122

SHIM 3x6x1

303122

SHIM 3x6x1

303123

SHIM 3x6x2

303123

SHIM 3x6x2

14

TWEAK & SIDE

SPRINGS SETTING

VIDEO TECH TIP

▶

NOTE ORIENTATION

Leading edge of hole

is beveled.

DETAIL STEP

SIDE SPRINGS

#373584 C=0.6 SILVER OPTION

#373585 C=0.9 GOLD INCLUDED

#373586 C=1.2 BLACK OPTION

#373587 C=1.5 SILVER OPTION

#373588 C=1.8 GOLD OPTION

2. REAR SUSPENSION

DETAIL

POD LINKAGE POSITION

OUTER POSITION - (INITIAL SETTING)

LESS ANGLED side links make the car

easier to drive.

INNER POSITION

Xray X12 User manual

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