Xray XT4 Instruction Manual

Page 1

INSTRUCTION MANUAL

Page 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.

CUSTOMER SUPPORT

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

FAILURE TO FOLLOW THESE INSTRUCTIONS WILL BE CONSIDERED AS ABUSE AND/OR NEGLECT.

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

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 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.

XRAY Europe

K Vystavisku 6992 91101 Trenčín Slovakia, EUROPE Phone: 421-32-7401100 Fax: 421-32-7401109 E-mail: info@teamxray.com

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.

XRAY USA

RC America, 2030 Century Center Blvd #15 Irving, TX 75062 USA Phone: (214) 744-2400 Fax: (214) 744-2401 E-mail: xray@rcamerica.com

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.

Page 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,

R/C & BUILDING TIPS

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 shortcircuit 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.

• 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.

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

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.

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.

Page 4

SYMBOLS USED

Part bags used Assemble left and

Assemble in the

specified order

right sides the

same way

Apply greaseScale Ensure smooth

Optional

1:1

TOOLS REQUIRED

Scissors

(HUDY #188990)

Special Tool for turnbuckles & nuts (HUDY #181090)

L=R

parts

Turnbuckle Wrench

3mm (HUDY #181030)

3.0 mm

Pay attention

here

non-binding

movement

Pocket Hobby Knife

Assemble as many

(HUDY #188981)

times as specified

(here twice)

Tighten screw

gently

threadlock

Completed

assembly

Side Cutters

(HUDY #189010)

Apply

Apply CA glue

Detail

DETAIL

Combination Pliers

(HUDY #189020)

Apply oil

Professional Multi Tool

OIL

Apply cleaner

(HUDY #183011)

Tweezer

HUDY TOOLS:

Allen 1.5mm

Allen 2.0mm

Socket 5.5mm

Socket 7.0mm

Arm Reamer 3.0mm

Reamer (HUDY #107600) or (HUDY #107601)

ITEMS INCLUDED

HUDY Premium Silicone Oils HUDY Premium Silicone Oils HUDY Premium Silicone OilsHUDY Premium Silicone OilsHUDY Premium Silicone Oils Graphite Grease

Oil 450cSt (#106345) Oil 650cSt (#106365) Oil 100.000cSt (#106610)Oil 30.000cSt (#106530)Oil 10.000cSt (#106510)

(HUDY #106210)

EQUIPMENT REQUIRED

Transmitter Steering ServoReceiver

Electric Motor &

Pinion Gear with Set-screw

Bearing Oil

(HUDY #106230)

CA glue

Speed Controller LiPo Battery

Lexan™ Paint Battery Charger Tires & Inserts

Double-sided Tape (HUDY #107875)

Page 5

NOT INCLUDED

Set-up Book

To ensure that you always have access to the most up-to-date version of the HUDY Set-up Book, you can download it from the HUDY website at [www.hudy.net]. By offering this online version instead of including a hardcopy printed version in kits, you will always be assured of having the most current updated version.

XRAY offers wide range of optional tuning parts which are listed in tables like these. Please refer to the exploded view of each main section to verify which part is included in the kit while all other parts are available only as an optional part and must be purchased separately.

COLOR INDICATIONS

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:

XB4 TECH TIPS

SAMPLE OF OPTIONAL PARTS

#32XXXX TYPE OPTION 1 #32XXXX TYPE OPTION 2 #32XXXX TYPE INCLUDED #32XXXX TYPE OPTION 3

364910

361105

364902

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.

TIP

DRIVE SHAFT PIN SERVICING

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.

Do not use drive shafts when the pins are worn.

TIP

GRAPHITE PARTS PREPARATION

Follow this Tech Tip to prepare the graphite parts. Sand the edges with sandpaper, and then seal the edges with CA glue to reinforce them and help prevent delamination.

Prepare all XT4 Graphite Parts:

• Front shock tower

• Rear shock tower

Press out the worn pins.

Press in new pins and regularly inspect for wear.

Fine sandpaper

Use ﬁne sandpaper to sand smooth the edges of all graphite parts.

For quick & easy drive pin replacements use #106000 HUDY Drive Pin Replacement Tool together with #106036 Ejector Pivot Pin & Alternating Pivot 2.5mm.

Apply CA glue to all edges of the graphite parts.

To replace the worn pins use only premium HUDY drive pins (#106051 3.0mm dia x 10mm lenght) (#106053 2.5mm dia x 10mm lenght)

Page 6

1. FRONT & REAR DIFFERENTIAL

BEVEL GEARS

#364935 GRAPHITE OPTION #364945 ALU OPTION #364955 STEEL INCLUDED

941014

BAG

304932 GRAPHITE GEAR DIFF BEVEL & SATELLITE GEARS (2+4) 304980 COMPOSITE GEAR DIFF CROSS PIN 304990 DIFF GASKET (4) 364902 GEAR DIFFERENTIAL FOR 2.5MM PIN - SET 364910 COMPOSITE GEAR DIFFERENTIAL CASE 364955 STEEL DIFFERENTIAL BEVEL GEAR 35T 364961 GEAR DIFF OUTDRIVE ADAPTER FOR 2.5MM PIN - HUDY SPRING STEEL™ (2)

981210

364961

364990

903258

304990

964050

364955

964031

304932

304980

972050

981210

972050

941014

364961

364910

964050

304932

964031

BEVEL & SATELITTE GEARS + PINS

#304932 + #304980 GRAPHITE INCLUDED #335030 + #335080 STEEL OPTION

364990 COMPOSITE BEVEL GEAR BUSHING (2) 903258 HEX SCREW SFH M2.5x8 (10) 941014 BALL-BEARING 10x15x4 RUBBER SEALED - GREASE (2) 964031 WASHER S 3.5x10x0.2 (10) 964050 WASHER S 5x15x0.3 (10) 972050 SILICONE O-RING 5x2 (10) 981210 PIN 2x10 (10)

964050

S 5x15x0.3

972050

O 5x2

981210

P 2x10

964050

S 5x15x0.3

NOTE ORIENTATION

➊

#106210 HUDY GRAPHITE GREASE

➍

OIL

➌

➋

DO NOT USE for optional ALU or GRAPHITE gears

#106210 HUDY GRAPHITE GREASE

➍

STEP DETAIL Use tweezers to

insert pin

➍

➋

➌

➍➎

➎

STEP DETAIL

➎

➊

➍

DETAIL

CUTAWAY VIEW

972050

O 5x2

981210

P 2x10

➎

OIL

DETAIL

Page 7

1. FRONT & REAR DIFFERENTIAL

964031

S 3.5x10x0.2

TO ENSURE YOU HAVE THE SAME AMOUNT OF OIL FROM REBUILD TO REBUILD, DO THE FOLLOWING:

➊ Put the diff (without oil) on the scale and

check the weight (approximately 9.80g)

Front diff

Silicone oil 30.000cSt

Fill just above the

cross-pins.

PROPER AMOUNT OF OIL IN THE DIFFS

Use a digital scale to measure the exact amount of oil in the diff. Remember that during operation the diff gets hotter and the heat may allow the oil to expand. If there is too much oil inside it may interfere with the diff operation and damage the internal gears.

#107865

HUDY Ultimate Digital Pocket

Scale 300g±0.01g

1 140

30.000cSt

11.40g + 1.20g = 12.60gDiff.

Diff.

11.40g + 1.20g = 12.60g

Rear diff

OIL

Silicone oil 10.000cSt Fill just above the cross-pins.

Fill differential up to the top of the

diff cross-pins. DO NOT fill the diff

to the top of the housing.

➋ Slowly pour oil into the diff and watch the weight.

Diff.

1260 1260

DIFFERENTIAL OIL

903258

SFH M2.5x8

941014

BB 10x15x4

10.000cSt

TIPS FOR DIFFERENTIALS

REAR DIFERENTIALFRONT DIFERENTIAL

LOW TRACTION 20 000cSt (HUDY #106520) MEDIUM-HIGH TRACTION 30 000cSt (HUDY #106530) SUPER-HIGH TRACTION 40 000cSt (HUDY #106540)

NOTE:

Softer oil increases steering, harder oil increases stability.

2x 2x 2x

Tighten the screws equally but do NOT

tighten them completely.

LOW TRACTION 5 000cSt (HUDY #106450) MEDIUM-HIGH TRACTION 10 000cSt (HUDY #106510) SUPER-HIGH TRACTION 15 000cSt (HUDY #106515)

NOTE:

Softer oil increases rear traction, harder oil increases on-power steering.

Use HUDY Ball-Bearing Grease

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

➊

➍

Finish tightening in this order.

➌

➋

Page 8

1. GEAR CENTER DIFFERENTIAL

902306

BAG

304930

364911

981210

364981

364970

903258

304930 COMPOSITE GEAR DIFF BEVEL & SATELLITE GEARS (2+4) 304980 COMPOSITE GEAR DIFF CROSS PIN 304990 DIFF GASKET (4) 364901 GEAR CENTER DIFFERENTIAL - SET 364910 COMPOSITE GEAR DIFFERENTIAL CASE 364911 COMPOSITE CENTER GEAR DIFFERENTIAL ADAPTER 364970 CENTER DIFF OUTDRIVE ADAPTER - HUDY SPRING STEEL™ (2) 364981 COMPOSITE CENTER DIFF SPUR GEAR 81T / 48

304930

304980

972050

364910

364970

972050

304990

964050

964031

902306 HEX SCREW SH M3x6 (10) 903258 HEX SCREW SFH M2.5x8 (10) 964031 WASHER S 3.5x10x0.2 (10) 964050 WASHER S 5x15x0.3 (10) 972050 SILICONE O-RING 5x2 (10) 981210 PIN 2x10 (10)

981210

CENTER DIFF SPUR GEARS

#364978 78T/48 OPTION

#364981 81T/48 INCLUDED

BEVEL & SATELITTE GEARS + PINS

#304930 + #304980 COMPOSITE INCLUDED

#335030 + #335080 STEEL OPTION

#304931 + #304980

GRAPHITE

OPTION

964050

S 5x15x0.3

972050

O 5x2

981210

P 2x10

964050

S 5x15x0.3

OIL

➊

NOTE ORIENTATION

➍

STEP DETAIL Use tweezers to

insert pin

OIL

STEP DETAIL

➍

➋

➍

➋

➌

➍➎

➍

➌

DETAIL

➎

➊

CUTAWAY VIEW

OIL

972050

O 5x2

981210

P 2x10

➎

OIL

Page 9

1. GEAR CENTER DIFFERENTIAL

964031

S 3.5x10x0.2

Center diff

OIL

Silicone oil 100.000cSt Fill just above the cross-pins.

PROPER AMOUNT OF OIL IN THE DIFFS

Fill differential up to the top of the

diff cross-pins. 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:

#107865

HUDY Ultimate Digital Pocket

Scale 300g±0.01g

1 1.00

100.000cSt

1250

DIFFERENTIAL OIL

902306

SH M3x6

903258

SFH M2.5x8

➊ Put the diff (without oil) on the scale and

check the weight (approximately 9.80g)

2.5x8mm

Tighten the screws equally but do NOT tighten them completely.

11.00g + 1.50g = 12.50gDiff.

FOR CENTER DIFFERENTIAL

LOW TRACTION 50.000cSt (HUDY #106550) MEDIUM TRACTION 100.000cSt (HUDY #106610) HIGH TRACTION 500.000cSt (HUDY #106650)

NOTE:

Softer oil increases steering, harder oil increases stability.

Finish tightening in this order.

➋ Slowly pour oil into the diff and watch the weight.

3x6mm

➊

➌

➍

➋

Page 10

2. REAR CENTRAL TRANSMISSION

902310

XRAY BALL-BEARINGS

#359050 5x10x4 GREASE OPTION #940510 5x10x4 OIL INCLUDED #940814 8x14x4 GREASE OPTION #940815 8x14x4 OIL INCLUDED

DRIVE SHAFT COLLARS

#365470 COMPOSITE INCLUDED #365471-K ALU - BLACK OPTION #365471-O ALU - ORANGE OPTION

BEVEL DRIVE GEARS

#365114 GRAPHITE OPTION #365134 STEEL OPTION

CENTRAL SHAFT UNIVERSAL JOINTS

#365440 OPTION

363083

365230

365427

981208

940510

980210

365442

365470

940815

362003

902306

MARKED “R“

365124

362003

364902+364955

902310

DETAIL

IMPORTANT

REAR BLOCK

BAG

980210

P 2x10

362003 DIFF BULKHEAD BLOCK SET REAR 363083 XT4 GRAPHITE SHOCK TOWER REAR 3.5MM 365124 STEEL BEVEL DRIVE GEAR 14T 365230 DRIVE SHAFT COUPLING - HUDY SPRING STEEL™ 365427 CENTRAL DRIVE SHAFT 105MM - HUDY SPRING STEEL™ 365442 CENTRAL SHAFT UNIVERSAL JOINT 365470 COMPOSITE DRIVE SHAFT SAFETY COLLAR - V2 (3)

902306 HEX SCREW SH M3x6 (10)

CENTRAL DRIVE SHAFT (105mm)

DRIVE SHAFT COLLARS

#365470 COMPOSITE INCLUDED #365471-K ALU - BLACK OPTION #365471-O ALU - ORANGE OPTION

902310 HEX SCREW SH M3x10 (10) 940510 BALL-BEARING 5x10x4 RUBBER SEALED - OIL (2) 940815 BALL-BEARING 8x14x4 RUBBER SEALED - OIL (2) 980210 PIN 2x10 (10) 981208 PIN 2x8 (10)

364902 GEAR DIFFERENTIAL FOR 2.5MM PIN - SET 364955 STEEL DIFFERENTIAL BEVEL GEAR 35T

DRIVE SHAFT COVER CAPS

Lubricate the drive shaft connecting joint properly so the drive shaft turns freely. In the event that not enough grease is used, the connecting pin may lock and may even, in extreme situations, push through the drive shaft cover cap.

➋

➌

➊

➍

#106210 HUDY GRAPHITE GREASE #106213 HUDY JOINT GREASE - OPTION

Page 11

2. REAR CENTRAL TRANSMISSION

902306

SH M3x6

940510

BB 5x10x4

940815

BB 8x14x4

981208

P 2x8

902310

SH M3x10

Marked “R”

REAR BLOCK

XRAY BALL-BEARINGS

#359050 5x10x4 GREASE OPTION #940510 5x10x4 OIL INCLUDED #940814 8x14x4 GREASE OPTION #940815 8x14x4 OIL INCLUDED

DETAIL

Bearing with BLUE

DETAIL

rubber covers

➌

OIL

5x10x4mm

Bearing Oil (HUDY #106230)

NOTE ORIENTATION

Bearing Oil

➍

➊

(HUDY #106230)

OIL

8x14x4mm

GRAPHITE GREASE (HUDY #106210)

➋

➎

➏

THREAD LOCK

NOTE ORIENTATION

902310

SH M3x10

REAR DIFF 10.000cSt

ALTERNATIVE 2

SHOCKS MOUNTED BEHIND REAR SHOCK TOWER DO NOT USE FOR BASIC SET-UP

Follow the TECH TIP on page 5

to prepare graphite parts

ALTERNATIVE 1

SHOCKS MOUNTED IN FRONT OF REAR SHOCK TOWER

(INITIAL SETTING)

NOTE Alternatives shock mounted folow page 39 / step 2 and 3.

Page 12

2. FRONT CENTRAL TRANSMISSION

365426

365230

981208

365470

XRAY BALL-BEARINGS

#359050 5x10x4 GREASE OPTION #940510 5x10x4 OIL INCLUDED #940814 8x14x4 GREASE OPTION #940815 8x14x4 OIL INCLUDED

DRIVE SHAFT COLLARS

#365470 COMPOSITE INCLUDED #365471-K ALU - BLACK OPTION #365471-O ALU - ORANGE OPTION

BEVEL DRIVE GEARS

#365114 GRAPHITE OPTION #365134 STEEL OPTION

CENTRAL SHAFT UNIVERSAL JOINTS

#365440 OPTION

980210

365442

940510

940815

362002

902306

365124

MARKED “F“

364902+ 364955

362002

362084

902310

DETAIL

IMPORTANT

FRONT BLOCK

BAG

980210

P 2x10

362002 DIFF BULKHEAD BLOCK SET FRONT 362084 XT4 GRAPHITE SHOCK TOWER FRONT 3.5MM 365124 STEEL BEVEL DRIVE GEAR 14T 365230 DRIVE SHAFT COUPLING - HUDY SPRING STEEL™ 365426 CENTRAL DRIVE SHAFT 72MM - HUDY SPRING STEEL™ 365442 CENTRAL SHAFT UNIVERSAL JOINT 365470 COMPOSITE DRIVE SHAFT SAFETY COLLAR - V2 (3)

902306 HEX SCREW SH M3x6 (10)

DRIVE SHAFT COVER CAPS

CENTRAL DRIVE SHAFT (72mm)

902310 HEX SCREW SH M3x10 (10) 940510 BALL-BEARING 5x10x4 RUBBER SEALED - OIL (2) 940815 BALL-BEARING 8x14x4 RUBBER SEALED - OIL (2) 980210 PIN 2x10 (10) 981208 PIN 2x8 (10)

364902 GEAR DIFFERENTIAL FOR 2.5MM PIN - SET 364955 STEEL DIFFERENTIAL BEVEL GEAR 35T

➋

➌

➊

➍

#106210 HUDY GRAPHITE GREASE #106213 HUDY JOINT GREASE - OPTION

DRIVE SHAFT COLLARS

#365470 COMPOSITE INCLUDED #365471-K ALU - BLACK OPTION #365471-O ALU - ORANGE OPTION

Page 13

902306

SH M3x6

940510

BB 5x10x4

2. FRONT CENTRAL TRANSMISSION

Bearing with BLUE rubber covers

➍

OIL

5x10x4mm

➊

Bearing Oil (HUDY #106230)

NOTE ORIENTATION

Bearing Oil

(HUDY #106230)

OIL

8x14x4mm

DETAIL

940815

BB 8x14x4

981208

P 2x8

902310

SH M3x10

Marked “F”

DETAIL

XRAY BALL-BEARINGS

#359050 5x10x4 GREASE OPTION #940510 5x10x4 OIL INCLUDED #940814 8x14x4 GREASE OPTION #940815 8x14x4 OIL INCLUDED

➋

GRAPHITE GREASE

(HUDY #106210)

NOTE ORIENTATION

THREAD LOCK

➌

➎

902310

SH M3x10

FRONT DIFF 30.000cSt

NOTE ORIENTATION

Follow the TECH TIP on page 5

to prepare graphite parts

Page 14

3. REAR SUSPENSION

903312

363321

362315

902308

362478

367210

363311

362315

306219

901304

362003

901303

303431-K

303454

901308

303454

323112-M

REAR SUSPENSION ARMS

#323112-M MEDIUM INCLUDED #323112-H HARD OPTION #323112-G GRAPHITE OPTION

#363313 BRASS REAR LOWER SUSPENSION HOLDER SET +2 - RR+RF

903312

ANTI-ROLL BARS

#362470 1.0mm #362471 1.1mm #362472 1.2mm #362473 1.3mm #362474 1.4mm #362476 1.6mm #362478 1.8mm #362480 2.0mm

OPTION OPTION OPTION OPTION OPTION OPTION INCLUDED OPTION

BAG

303431-K ALU 4.9MM BALL END - BLACK (2) 303454 BALL JOINT 4.9MM - OPEN (4) 306219 COMPOSITE SET OF SERVO SHIMS (4) 362003 DIFF BULKHEAD BLOCK SET REAR 362315 ECCENTRIC BUSHING SET (2) 362478 ANTI-ROLL BAR 1.8 MM 323112-M XT4 COMPOSITE SUSPENSION ARM REAR LOWER - MEDIUM 363311 ALU REAR LOWER SUSP. HOLDER +2 - FRONT - 7075 T6 (5MM) 363321 ALU REAR LOWER SUSP. HOLDER +2 - REAR - 7075 T6 (5MM)

367210 SUSPENSION PIVOT PIN (2) 901303 HEX SCREW SB M3x3 (10) 901304 HEX SCREW SB M3x4 (10) 901308 HEX SCREW SB M3x8 (10) 902308 HEX SCREW SH M3x8 (10) 903312 HEX SCREW SFH M3x12 (10))

Page 15

3. REAR SUSPENSION

306219

SHIM 3x6x2

903312

SFH M3x12

Marked “R”

➍

➊

INITIAL POSITION

1º 1º0.5º 0.5º0º

Composite eccentric bushings

DETAIL

REAR SUSPENSION ARMS

DETAIL

#323112-M MEDIUM INCLUDED #323112-H HARD OPTION #323112-G GRAPHITE OPTION

Check for free movement

➌

➋

3x6x2mm

➌

➊

INITIAL POSITION

➍

1º 1º0.5º 0.5º0º

Composite eccentric bushings

All possible mounting

If the suspension arm does not move freely use a

alternatives of eccentric bushings

HUDY Arm Reamer to size the holes of the arms

Arm Reamer 3.0mm

(HUDY #107633)

ECCENTRIC BUSHINGS HAVE TWO DIFFERENT OFFSETS FROM THE CENTER.

TOE-IN

ANTI-SQUAT

ROLL CENTER

Middle position = 0.5° or 0.375mm from center.

TRACK-WIDTH

Outer position = 1° or 0.75mm from center.

The XRAY rear alu lower suspension holders provide great range of adjustment for the rear suspension. Using different combinations of eccentric bushings, fine adjustment of rear anti-squat, rear toe-in, rear roll center, and rear track-width can be obtained. For more information about the influence of rear anti-squat, rear toe-in, rear roll center and rear track width on car handling, please refer to HUDY Set-up Book (#209100).

ANTI-SQUAT ROLL CENTER TRACK-WIDTH TOE-IN

RR RR RR RRRF RF

=2°

=3°

=1°

=3°

=2°

=4°

=1°

=2°

=0°

=+0.75mm

0mm

=-0.75mm

The tables describe the amounts of adjustment using the center and outside positions of the eccentric bushings. The middle position eccentric bushings allow for finer adjustment increments. Example:

0(RR) - 0 (RF) = 2°

0(RR) - 0.5 (RF) = 2.5°

0(RR) - 1 (RF) = 3°

=+1.5mm

0mm

=-1.5mm

RF(°) (mm) (mm) (°)

=3°

=4°

=2°

=3°

=1°

= 2°

= 2.5°

= 3°

=4°

=5°

=3°

Page 16

3. REAR SUSPENSION

L=R

901308

SB M3x8

DETAIL

1.5mm

4mm

901303

SB M3x3

901304

SB M3x4

902308

SH M3x8

ANTI-ROLL BARS

#362470 1.0mm #362471 1.1mm #362472 1.2mm #362473 1.3mm #362474 1.4mm #362476 1.6mm #362478 1.8mm #362480 2.0mm

OPTION OPTION OPTION OPTION OPTION OPTION INCLUDED OPTION

➋

3x3mm

➌

STEP DETAIL

L=R

DETAIL

0mm

➌

ANTI-ROLL BAR

Step check for free movement

➊

1.8mm

➊

Step

➊

Loosen the 3x4 setscrew if the anti-roll bar does not turn freely

3x4mm

3x8mm

DETAILDETAIL

Page 17

903312

3. FRONT SUSPENSION

362320

901303

303431-K

362315

901308

303454

322112-M

303454

367210

306219

362478

303121-K

362002

306219

902308

901304

362315

903312

361200

362310

902308

ANTI-ROLL BARS

#362470 1.0mm #362471 1.1mm #362472 1.2mm #362473 1.3mm #362474 1.4mm #362476 1.6mm #362478 1.8mm #362480 2.0mm

BAG

OPTION OPTION OPTION OPTION OPTION OPTION INCLUDED OPTION

303121-K ALU SHIM 3x6x0.5MM - BLACK (10) 303431-K ALU 4.9MM BALL END - BLACK (2) 303454 BALL JOINT 4.9MM - OPEN (4) 306219 COMPOSITE SET OF SERVO SHIMS (4) 322112-M XT4 COMPOSITE SUSPENSION ARM FRONT LOWER - MEDIUM 361200 COMPOSITE BUMPER - V2 362002 DIFF BULKHEAD BLOCK SET FRONT - V2 362310 ALU FRONT LOWER SUSP. HOLDER - FRONT - 7075 T6 (5MM) 362315 ECCENTRIC BUSHING SET (2)

SUSPENSION ARMS

#322112-M MEDIUM INCLUDED #322112-G GRAPHITE OPTION

362320 ALU FRONT LOWER SUSP. HOLDER - REAR - 7075 T6 (5MM) 362478 ANTI-ROLL BAR 1.8 MM 367210 SUSPENSION PIVOT PIN (2)

901303 HEX SCREW SB M3x3 (10) 901304 HEX SCREW SB M3x4 (10) 901308 HEX SCREW SB M3x8 (10) 902308 HEX SCREW SH M3x8 (10) 903312 HEX SCREW SFH M3x12 (10))

Page 18

3. FRONT SUSPENSION

303121-K

SHIM 3x6x0.5

306219

SHIM 3x6x1

306219

SHIM 3x6x2

903312

SFH M3x12

Marked “F”

➍

➊

INITIAL POSITION

1º 0.5º 0.5º0º

Composite eccentric bushings

DETAIL

SUSPENSION ARMS

DETAIL

#322112-M MEDIUM INCLUDED #322112-G GRAPHITE OPTION

Check for free movement

➌

➋

1º

3x6x0.5mm

NOTE ORIENTATION

3x6x1mm

3x6x2mm (2x)

➌

➊

➍

INITIAL POSITION

NOTE ORIENTATION

1º 1º0.5º 0.5º0º

Composite eccentric bushings

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

Arm Reamer 3.0mm

(HUDY #107633)

ECCENTRIC BUSHINGS HAVE TWO DIFFERENT OFFSETS FROM THE CENTER.

KICK UP

ROLL CENTER

Middle position = 0.5° or 0.375mm from center.

TRACK-WIDTH

Outer position = 1° or 0.75mm from center.

The XRAY alu front lower suspension holders provide great range of adjustment for the front suspension. Using different combinations of eccentric bushings, fine adjustment of front kick-up, roll-center, and front track-width can be obtained. For more information about the influence of kick-up, front track-width, and roll centers on car handling, please refer to HUDY Set-up Book (#209100).

KICK-UP

(°)

=9°

=8°

=10°

=8°

=7°

The tables describe the amounts of adjustment using the center and outside positions of the eccentric bushings.

=9°

The middle position eccentric bushings allow for finer adjustment increments.

=10°

Example:

=9°

0(FF) - 0(FR) = 9°

=11°

0.5(FF) - 0(FR) = 9.5°

(mm) (mm)

=+0.75mm

0mm

=-0.75mm

The track-width is directly influenced by the size of the wheels and tires used.

TRACK-WIDTHROLL CENTER

FFFF

FRFR

=+1.5mm

0mm

=-1.5mm

= 9°

= 9.5°

TOTAL CASTER=C-HUB CASTER+KICK UP

KICK-UP

C-HUB CASTER

7° 8° 9° 10° 11°

6° 13° 14° 15° 16° 17°

9° 16° 17° 18° 19° 20°

Caster is the angle between the steering pivot axis and the vertical plane. Caster is affected not only by the C-Hub caster, but also by the front kick-up angle relative to the flat chassis bottom. The table indicates how kick up angle effects total caster.

The XT4’s stock caster blocks are 9°, but 6° blocks are available as an option.

1(FF) - 0(FR) = 10°

= 10°

Page 19

901308

SB M3x8

902308

SH M3x8

3. FRONT SUSPENSION

L=R

DETAIL

1.5mm

4mm

901303

SB M3x3

901304

SB M3x4

902308

SH M3x8

3x3mm

STEP DETAIL

➌

L=R

➌

➋

0mm

DETAIL

➊

ANTI-ROLL BARS

#362470 1.0mm #362471 1.1mm #362472 1.2mm #362473 1.3mm #362474 1.4mm #362476 1.6mm #362478 1.8mm #362480 2.0mm

OPTION OPTION OPTION OPTION OPTION OPTION INCLUDED OPTION

3x4mm

3x8mm

ANTI-ROLL BAR

DETAIL

Step check for free movement

➊

Step

➊

Loosen the 3x4 setscrew if the anti-roll bar does not turn freely

DETAIL

Page 20

4. REAR TRANSMISSION

322612

302665

362651

363520

302665

362651

362280

962030 962031

902312

#325341 REAR ADJUSTABLE DRIVE AXLE LB - HUDY SPRING STEEL™ + 325390 ALU SHIM 10x12x2MM (2)

902205

362316

323354-H

365360

323382

940513

960030

980210

941014

306219

908210

325340

327321

902310

325316

365230

902254

961025

#323381 ALU REAR HUB PLATE FOR MULTI ADJ. UPRIGHT - 2-HOLE - SWISS 7075 T6

XRAY BALL-BEARINGS

#940512 5x12x4 OIL OPTION #941015 10x15x4 OIL OPTION #940513 5x12x4 GREASE INCLUDED #941014 10x15x4 GREASE INCLUDED

REAR UPRIGHTS

#323354-H COMPOSITE - H INCLUDED #323354-G COMPOSITE - G OPTION #323355 ALU OPTION

BAG

30 2665 COMPOSITE BALL JOINT 4.9MM - CLOSED WITH HOLE (4) 30 6219 CCOMPOSITE SET OF SERVO SHIMS (4) 32 2612 ADJ. TURNBUCKLE 75MM M3 L/R - HUDY SPRING STEEL™ (2) 32 3354-H COMPOSITE UPRIGHT REAR - HARD 32 3382 ALU REAR HUB PLATE FOR MULTI ADJ. UPRIGHT - 1-HOLE 32 5316 XT4 REAR DRIVE SHAFT 92MM WITH 2.5MM PIN - SPRING STEEL™ 32 5340 REAR DRIVE AXLE LB - HUDY SPRING STEEL™ 32 7321 REAR ARM PIVOT PIN 3x34MM(2) 36 2280 ALU CONICAL SHIM 3x6x2.0MM (10) 36 2316 OPEN ECCENTRIC BUSHING SET (2) 36 2651 BALL END 4.9MM WITH THREAD 8MM (2) 36 3520 REAR WING POST - V2 (2) 36 5230 DRIVE SHAFT COUPLING - HUDY SPRING STEEL™ 36 5360 ALU WHEEL HUB 12MM - OFFSET “+4.5MM” (2)

ALU CONICAL SHIMS

#362280 SILVER INCLUDED #362280-K BLACK OPTION #362280-O ORANGE OPTION

ALU NUTS M3

#296530-B ALU BLUE OPTION #296530-K ALU BLACK OPTION #296530-O ALU ORANGE OPTION #960030 STEEL SILVER INCLUDED #960031 ALU SILVER OPTION

90 2205 HEX SCREW SH M2x5 (10) 90 2254 HEX SCREW SH M2.5x4 (10) 90 2310 HEX SCREW SH M3x10 (10) 90 2312 HEX SCREW SH M3x12 (10) 94 0513 BALL-BEARING 5x12x4 RUBBER SEALED - GREASE (2) 94 1014 BALL-BEARING 10x15x4 RUBBER SEALED - GREASE (2) 96 0030 NUT M3 (10) 96 1025 WASHER S 2.5 (10) 96 2030 WASHER S 3x6x0.3 (10) 96 2031 WASHER S 3x6x0.1 (10) 98 0210 PIN 2x10 (10)

WHEEL HUBS 12MM

#365360 +4.5mm - 6 slots INCLUDED #365359 +3.75mm - 5 slots OPTION #365358 +3.0mm - 4 slots OPTION #365357 +2.25mm - 3 slots OPTION #365356 +1.5mm - 2 slots OPTION #365355 +0.75mm - 1 slot OPTION #365353 0mm - 0 slots OPTION #365354 -0.75mm - Lightw. OPTION

WHEEL HUBS 14MM

#365352 +0.75mm OPTION #365350 0mm OPTION #365351 -0.75mm OPTION

Page 21

980210

P 2x10

L=R

4. REAR TRANSMISSION

DRIVE SHAFT (92mm)

➌

#325341

➊

REAR ADJUSTABLE DRIVE AXLE LB - HUDY SPRING STEEL™ + 325390 ALU SHIM 10x12x2MM (2)

940513

BB 5x12x4

941014

BB 10x15x4

980210

P 2x10

902205

SH M2x5

➋

LONG AXLE

L=R

Use HUDY Ball-Bearing Grease

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

➋

➏

➎

5x12x4mm

Bearing with BLACK rubber covers

XRAY BALL-BEARINGS

#940512 5x12x4 OIL OPTION #941015 10x15x4 OIL OPTION #940513 5x12x4 GREASE INCLUDED #941014 10x15x4 GREASE INCLUDED

➊

10x15x4mm

#106210 HUDY GRAPHITE GREASE #106213 HUDY JOINT GREASE - OPTION

➌

➍

WHEEL HUBS 12MM

OPTIONAL HEX HUB EFFECTS

Different offset hex hubs are used to increase or decrease the track-width.

LESS OFFSET Rear - more traction Front - more steering

MORE OFFSET

Rear - less traction Front - less steering

REAR UPRIGHTS

#323354-H HARD INCLUDED #323354-G GRAPHITE OPTION #323355 ALU OPTION

902312

SH M3x12

L=R

ALTERNATIVE ORIENTATION

NOTE ORIENTATION

INITIAL SETTING

#323381 ALU REAR HUB PLATE FOR MULTI ADJ. UPRIGHT - 2-HOLE - SWISS 7075 T6

Page 22

4. REAR TRANSMISSION

306219

SHIM 3x6x2

902254

SH M2.5x4

961025

962030

S 3x6x0.3

WHEELBASE

S 2.5

962031

S 3x6x0.1

Use 0.1mm or 0.3mm shim to adjust the play.

3x6x0.1mm

3x6x0.3mm

L=R

3x6x2mm

S 2.5

TIGHTEN GENTLY

NOTE ORIENTATION

S 2.5

8mm THREAD

TIGHTEN GENTLY

DETAIL

Check for free

movement

LONGER WHEELBASE (INITIAL SETTING)

Adjustment Shim IN FRONT OF HUB moves hub rearward.

ARM

SHORTER WHEELBASE

Adjustment Shim BEHIND HUB moves hub forward.

ARM

CAMBER

362280

CON. SHIM 3x6x2

960030

N M3

ROLL CENTER

8mm THREAD

L=R

CONICAL SHIM 3x6x2mm

THREAD

NOTE ORIENTATION

THREAD

Install the pivot balls with Professional Multi Tool (HUDY #183011)

ALU CONICAL SHIMS

#362280 SILVER INCLUDED #362280-K BLACK OPTION #362280-O ORANGE OPTION

NOTE ORIENTATION

DETAIL

59mm

L=R

INITIAL SETTING

L=R

902310

SH M3x10

L=R

Page 23

4. FRONT TRANSMISSION

WHEEL HUBS 12MM

#365360 +4.5mm OPTION #365359 +3.75mm OPTION #365358 +3.00mm OPTION #365357 +2.25mm OPTION #365356 +1.5mm OPTION #365355 +0.75mm OPTION #365353 0mm INCLUDED #365354 -0.75mm OPTION

WHEEL HUBS 14MM

#365352 +0.75mm OPTION #365350 0mm OPTION #365351 -0.75mm OPTION

940513

365353

359050

C-HUBS

#362210 RIGHT 9° - M OPTION #362210-H RIGHT 9° - H INCLUDED #362210-G RIGHT 9° - G OPTION #362211 RIGHT 6° OPTION #362234 ALU RIGHT 12° OPTION #362220 LEFT 9° - M OPTION #362220-H LEFT 9° - H INCLUDED #362220-G LEFT 9° - G OPTION #362221 LEFT 6° OPTION #362244 ALU LEFT 12° OPTION

980210

365240

365470

362291

902314

362210-H

365230

902312

362652

362280

325317

302665

362651

322611

960030

ALU NUTS M3

#296530-B ALU BLUE OPTION #296530-K ALU BLACK OPTION #296530-O ALU ORANGE OPTION #960030 STEEL SILVER INCLUDED #960031 ALU SILVER OPTION

ALU CONICAL SHIMS

#362280 SILVER INCLUDED #362280-K BLACK OPTION #362280-O ORANGE OPTION

STEERING BLOCKS

#362250 MEDIUM OPTION #362250-H HARD INCLUDED #362250-G GRAPHITE OPTION

BAG

362290

362250-H

902205

327220

961025

302665 COMPOSITE BALL JOINT 4.9MM - CLOSED WITH HOLE (4) 322611 ADJ. TURNBUCKLE M3 L/R 70 MM - SPRING STEEL (2) 325317 XT4 FRONT DRIVE SHAFT 99MM WITH 2.5MM PIN - HUDY SPRING STEEL™ 327220 FRONT ARM PIVOT PIN (2) 362210-H COMPOSITE C-HUB 9° DEG. RIGHT - HARD 362220-H COMPOSITE C-HUB 9° DEG. LEFT - HARD 362250-H COMPOSITE STEERING BLOCK - HARD 362280 ALU CONICAL SHIM 3x6x2.0MM (10) 362290 STEEL STEERING BUSHING - SHORT (2) 362291 STEEL STEERING BUSHING - LONG (2) 362651 BALL END 4.9MM WITH THREAD 8MM (2) 362652 BALL END 4.9MM WITH THREAD 10MM (2) 365230 DRIVE SHAFT COUPLING - HUDY SPRING STEEL™

902254

362220-H

XRAY BALL-BEARINGS

#940510 5x10x4 OIL OPTION #940512 5x12x4 OIL OPTION #359050 5x10x4 GREASE INCLUDED #940513 5x12x4 GREASE INCLUDED

DRIVE SHAFT COLLARS

#365470 COMPOSITE INCLUDED #365471-K ALU - BLACK OPTION #365471-O ALU - ORANGE OPTION

365240 FRONT DRIVE AXLE - HUDY SPRING STEEL™ 365353 ALU WHEEL HUB 12MM (2) 365470 COMPOSITE DRIVE SHAFT SAFETY COLLAR (3)

359050 BALL-BEARING 5x10x4 STEEL SEALED - GREASE (2) 902205 HEX SCREW SH M2x5 (10) 902254 HEX SCREW SH M2.5x4 (10) 902312 HEX SCREW SH M3x12 (10) 902314 HEX SCREW SH M3x14 (10) 940513 BALL-BEARING 5x12x4 RUBBER SEALED - GREASE (2) 960030 NUT M3 (10) 961025 WASHER S 2.5 (10) 980210 PIN 2x10 (10)

Page 24

4. FRONT TRANSMISSION

980210

P 2x10

359050

BB 5x10x4

940513

BB 5x12x4

L=R

➍

Use HUDY Ball-Bearing Grease

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

SHORT AXLE

5x12x4mm

DRIVE SHAFT (99mm)

➌

➋

➊

#106210 HUDY GRAPHITE GREASE #106213 HUDY JOINT GREASE - OPTION

XRAY BALL-BEARINGS

#940510 5x10x4 OIL OPTION

5x10x4mm

Bearing with STEEL covers

#940512 5x12x4 OIL OPTION #359050 5x10x4 GREASE INCLUDED #940513 5x12x4 GREASE INCLUDED

902205

SH M2x5

980210

P 2x10

902312

SH M3x12

902314

SH M3x14

➋

L=R

➊

➌

IMPORTANT

Be sure to use the shorter screw with shorter bushing and longer screw with longer bushing.

3x14mm Longer

➌

screw

Shorter screw

➌

Longer

➊

Shorter

➊

3x12mm

Steel steering bushings allow roll-center adjustment.

WHEEL HUBS 12MM

#365360 +4.5mm OPTION #365359 +3.75mm OPTION #365358 +3.00mm OPTION #365357 +2.25mm OPTION #365356 +1.5mm OPTION #365355 +0.75mm OPTION #365353 0mm INCLUDED #365354 -0.75mm OPTION

DETAIL

OPTIONAL HEX HUB EFFECTS

Different off-set hex hubs are used to increase or decrease the track-width.

LESS OFF-SET Rear - more traction Front - more steering

MORE OFF-SET

Rear - less traction Front - less steering

INITIAL POSITION

LOWER ROLL CENTER

TOP = LONGER bushing & 3x14 screw

➋

BOTTOM = SHORTER bushing & 3x12 screw

Recommended for rough tracks to improve stability.

DETAIL

HIGHER ROLL CENTER

TOP = SHORTER bushing & 3x12 screw BOTTOM = LONGER bushing & 3x14 screw

Recommended for smooth tracks to gain more steering.

CASTER

ROLL CENTER

IMPORTANT

When inserting the bushings, make sure that bushings are inserted equally on both right and left hub to give the same roll center position.

Page 25

4. FRONT TRANSMISSION

902254

SH M2.5x4

961025

S 2.5

L=R

TIGHTEN GENTLY

S 2.5

Check for free

movement

S 2.5

TIGHTEN GENTLY

L=R

(HUDY #107633)

ARM REAMER

If the C-hub does not move freely, use a HUDY Arm Reamer to resize the hole.

CAMBER

362280

CON. SHIM 3x6x2

960030

N M3

CONICAL SHIM

L=R

3x6x2mm

10mm

THREAD

NOTE

ORIENTATION

10mm THREAD

THREAD

8mm THREAD

8mm

THREAD

Install the pivot balls with Professional Multi Tool (HUDY #183011)

ORIENTATION

NOTE

52.5mm

L=R

ALU CONICAL SHIMS

#362280 SILVER INCLUDED #362280-K BLACK OPTION #362280-O ORANGE OPTION

ROLL CENTER

DETAIL

INITIAL SETTING

L=R

ALU NUTS M3

#296530-B BLUE OPTION #296530-K BLACK OPTION #296530-O ORANGE OPTION #960030 STEEL INCLUDED #960031 SILVER OPTION

Page 26

4. FRONT & REAR ASSEMBLY

902316

902310

361178

361182

960030

961032

902308

902312

361298

#361295 COMPOSITE CHASSIS BRACE REAR - MEDIUM

#361179 BRASS CHASSIS BRACE REAR (40g)

361320

361269-H

902314

903310

903314

361297

903310

903308

960030

961032

903310

361269-H

903310

361105

361296

#361294 COMPOSITE CHASSIS BRACE FRONT - MEDIUM

#361269-M COMPOSITE CHASSIS SIDE GUARDS L+R - MEDIUM

#361181 GRAPHITE REAR LOWER BRACE 2.0MM

#361262 COMPOSITE REAR CHASSIS PLATE

ALU NUTS M3

#296530-B ALU BLUE OPTION #296530-K ALU BLACK OPTION #296530-O ALU ORANGE OPTION #960030 STEEL SILVER INCLUDED #960031 ALU SILVER OPTION

BAG

361178 GRAPHITE CHASSIS BRACE UPPER DECK 2.0MM 361182 COMPOSITE REAR LOWER BRACE 361296 COMPOSITE CHASSIS BRACE FRONT - HARD 361297 COMPOSITE CHASSIS BRACE REAR - HARD 361298 GRAPHITE CHASSIS WIRE COVER 2.0MM - V2 361320 BODY MOUNT, BATTERY MOUNT - V2 & WING SHIM (2)

902308 HEX SCREW SH M3x8 (10) 902310 HEX SCREW SH M3x10 (10) 902312 HEX SCREW SH M3x12 (10)

903308

903310

902314

902314 HEX SCREW SH M3x14 (10) 902316 HEX SCREW SH M3x16 (10) 903308 HEX SCREW SFH M3x8 (10) 903310 HEX SCREW SFH M3x10 (10) 903314 HEX SCREW SFH M3x14 (10) 960030 NUT M3 (10) 961032 WASHER S 3.2 (10)

361105 ALU CHASSIS - SWISS 7075 T6 (2MM) 361269-H COMPOSITE CHASSIS SIDE GUARDS L+R - HARD

#361106 ALU CHASSIS - SWISS 7075 T6 (2.5MM)

Page 27

903308

SFH M3x8

903310

SFH M3x10

903314

SFH M3x14

4. FRONT & REAR ASSEMBLY

#361269-M COMPOSITE CHASSIS SIDE GUARDS L+R (MEDIUM)

The medium side guards increase chassis flex and are recommended for low-traction tracks.

#361106 ALU CHASSIS - SWISS 7075 T6 (2.5MM)

960030

N M3

961032

S 3.2

CHASSIS FLEX

902308

SH M3x8

902310

SH M3x10

903310

SFH M3x10

3x14mm

3x10mm

3x8mm

3x10mm

NOTE

ORIENTATION

ALU NUTS M3

#296530-B ALU BLUE OPTION #296530-K ALU BLACK OPTION #296530-O ALU ORANGE OPTION #960030 STEEL SILVER INCLUDED #960031 ALU SILVER OPTION

3x8mm

Do not fully tighten the screws during assembly. Fully tighten the screws only after both front and rear suspension assemblies are mounted to the chassis.

#361179 BRASS CHASSIS BRACE REAR (40g)

3x10mm

#361295 COMPOSITE CHASSIS BRACE REAR - MEDIUM

#361294 COMPOSITE CHASSIS BRACE FRONT - MEDIUM

Page 28

4. FRONT & REAR ASSEMBLY

3x16mm

902314

SH M3x14

902316

SH M3x16

After you mount the rear suspension assembly to the chassis, fully tighten all 4 screws that were previously left untightened (page 25, step 2).

903310

SFH M3x10

902312

SH M3x12

902314

SH M3x14

3x14mm

3x12mm

3x10mm

DETAIL

903310

SFH M3x10

After you mount the front suspension assembly to the chassis, fully tighten all 3 screws that were previously left untightened (page 25, step 2).

3x10mm

3x14mm

Page 29

5. STEERING

903316

332660

363241

322611

303123

363241

332660

903318

362571

363241

902308

303125

332660

322611

363241

332660

903318

902310

361174

940508

362540

303125

940508

362510

940508

362550

303125

902310

362510

332561

362290

332540

970100

940508

362550

303125

903310903310

362290

362510

#362510-G COMPOSITE SERVO SAVER - GRAPHITE

902310

#362574 ALU STEERING PLATE 2-HOLE

#362571-G COMPOSITE STEERING PLATE - GRAHITE

BAG

303123 ALU SHIM 3x6x2.0MM (10) 303125 ALU SHIM 3x6x3.0MM (10) 322611 ADJ. TURNBUCKLE M3 L/R 70MM - SPRING STEEL™ (2) 332540 ALU SERVO SAVER ADJUSTABLE NUT 332561 SERVO SAVER SPRING C=14 332660 COMPOSITE STEERING & SERVO BALL JOINT 5.8 MM (4+2) 361174 GRAPHITE FRONT UPPER STEERING DECK 2.0MM 362290 STEEL STEERING BUSHING - SHORT (2) 362510 COMPOSITE SERVO SAVER 362540 ALU SERVO SAVER MAIN SHAFT 362550 SERVO SAVER PIVOT SHAFT (2)

362571 COMPOSITE STEERING PLATE 363241 BALL UNIVERSAL 5.75MM WITH BACKSTOP (2)

902308 HEX SCREW SH M3x8 (10) 902310 HEX SCREW SH M3x10 (10) 903310 HEX SCREW SFH M3x10 (10) 903316 HEX SCREW SFH M3x16 (10) 903318 HEX SCREW SFH M3x18 (10) 940508 BALL-BEARING 5x8x2.5 RUBBER SEALED - OIL (2) 970100 O-RING 10 x 1.5 (10)

Page 30

5. STEERING

970100

O 10x1.5

SERVO SAVER

THREAD LOCK

CLEANER

OIL

INITIAL PRELOAD SETTING

DETAIL

3~4mm

902310

SH M3x10

902308

SH M3x8

303125

SHIM 3x6x3

NOTE ORIENTATION

3x6x3mm

Bearing Oil (HUDY #106230)

STEERING PLATES

#362571 #362571-G #362574

HARD INCLUDED GRAPHITE OPTION ALU OPTION

Increases steering precision and predictability and is recommended for use in high-traction conditions. Includes extra Ackermann positions for very precise steering adjustment.

940508

BB 5x8x2.5

Bearing Oil

(HUDY #106230)

Page 31

303125

SHIM 3x6x3

902310

SH M3x10

903310

SFH M3x10

5. STEERING

3x10mm SH

3x6x3mm

3x10mm SFH

303125

SHIM 3x6x2

903316

SFH M3x16

L=R

3x16mm

THREAD

SHIM 3x6x2mm

Install the pivot balls with Professional Multi Tool (HUDY #183011)

51.5mm

NOTE ORIENTATION Adjustment block towards outside

DETAIL

view

903318

SFH M3x18

ACKERMANN BUMP STEER

TOE-IN

Adjustment block towards outside

NOTE ORIENTATION

3x18mm

Check for free movement

INITIAL POSITION

Check for free

movement

Page 32

6. SLIPPER CLUTCH ASSEMBLY

902308

361320

941015

364901

361187

902308

BAG

902318

941015

364013

903308

361175 GRAPHITE CENTER UPPER DECK 2.0MM - V2 361187 GRAPHITE REAR UPPER BRACE 2.0MM 361320 BODY MOUNT, BATTERY MOUNT - V2 & WING SHIM (2) 364013 ALU MOTOR BULKHEAD - LOWER 364023 COMPOSITE CENTRAL BULKHEAD - LOWER

902308 HEX SCREW SH M3x8 (10) 902318 HEX SCREW SH M3x18 (10) 903308 HEX SCREW SFH M3x8 (10) 941015 BALL-BEARING 10x15x4 RUBBER SEALED - OIL (2)

364901 GEAR CENTER DIFFERENTIAL - SET

364023

903308

361175

#364024

ALU

CENTRAL BULKHEAD

902318

SH M3x18

903308

SFH M3x8

ALTERNATIVE 1

FORWARD WEIGHT POSITION

(INITIAL SETTING)

#364024 ALU

CENTRAL BULKHEAD

FORWARD WEIGHT POSITION

More traction on the front suspension, increases rotation of the car in corners, recommended for use on medium- and high-traction tracks.

TIGHTEN GENTLY

Page 33

902318

SH M3x18

903308

SFH M3x8

ALTERNATIVE 2

REARWARD WEIGHT POSITION (OPTION)

6. SLIPPER CLUTCH ASSEMBLY

TIGHTEN GENTLY

NOTE ORIENTATION

(95mm)

#365425 Central Drive Shaft 95mm #365428 Central Drive Shaft 82mm

95mm - HUDY Spring Steel™

82mm - HUDY Spring Steel™

(82mm)

941015

BB 10x15x4

#364024 ALU

CENTRAL BULKHEAD

REARWARD WEIGHT POSITION

More traction on the rear suspension, increases stability of the car, recommended for use on very-low-traction tracks.

BEARING OIL (HUDY #106230)

OIL

NOTE ORIENTATION

BEARING OIL (HUDY #106230)

OIL

Page 34

6. SLIPPER CLUTCH ASSEMBLY

903308

SFH M3x8

902308

SH M3x8

Page 35

7. SHOCK ABSORBERS

PISTONS DETAIL

holes

(1.6mm)

2 holes

(1.7mm)

0 holes (Create custom holes)

(0mm - use required drill pin)

363240

902205

970120

368010

368261

368031

306219

368221

965023

368260

368220

368031

970080

972031

368140

368286

2 holes

(1.6mm)

970140

2 holes

(1.7mm)

368040

Thin Shim

368186

Thick ShimThick Shim

0 holes (Create custom holes)

(0mm - use required drill pin)

These pistons can NOT

be used in shocks without

making the custom holes

by yourselves.

306219

368010

352460

FRONT SPRINGS

#368174 PROGRESS. 2 STRIPES OPTION #368175 PROGRESS. 40mm 3 DOTS OPTION #368182 LINEAR 45mm 1 STRIPE & 3 DOTS OPTION #368183 LINEAR 1 DOT OPTION #368184 LINEAR 2 DOTS OPTION #368185 LINEAR 3 DOTS OPTION #368186 LINEAR 4 DOTS INCLUDED

REAR SPRINGS

#368273 PROGRESS. 2 STRIPES OPTION #368275 PROGRESS. 55mm 2 DOTS OPTION #368283 LINEAR 1 STRIPE & 3 DOTS OPTION #368284 LINEAR 1 DOT OPTION #368285 LINEAR 2 DOTS OPTION #368286 LINEAR 3 DOTS INCLUDED #368287 LINEAR 4 DOTS OPTION

BAG

306219 COMPOSITE SET OF SERVO SHIMS (4) 352460 PIVOT BALL 5.8 - V3 (10) 363240 BALL UNIVERSAL 5.8MM WITH BACKSTOP (2) 368010 COMPOSITE SHOCK PARTS 368031 SHOCK PISTONS - COMPLETE SET - DERLIN 368040 ALU SHOCK ADJUSTABLE NUT (2) 368140 ALU LOWER SHOCK BODY CAP (2) 368186 FRONT SPRING-SET - 4 DOTS (2) 368200 REAR SHOCK ABSORBERS COMPLETE SET (2) 368220 ALU SHOCK BODY - HARD COATED (2) 368221 XT2 ALU REAR SHOCK BODY - HARD COATED (2) 368260 HARDENED SHOCK SHAFT (2) 368261 XT2 REAR HARDENED SHOCK SHAFT (2) 368286 REAR SPRING-SET LINEAR - 3 DOTS (2)

#368051 ALU SHOCK CAP-NUT WITH VENT HOLE (2)

#368021 ALU SHOCK SPRING RETAINING COLLAR (4)

902205 HEX SCREW SH M2x5 (10) 965023 E-CLIP 2.3 (10) 970080 O-RING 8x1 (10) 970120 O-RING 12 x 1.0 (10) 970140 O-RING 14 x 1.5 (10) 972031 SILICONE O-RING 3x2.1 (10)

306219

#104004 HUDY AIR VAC - VACUUM PUMP

- 1/10 OFF-ROAD

Page 36

7. SHOCK ABSORBERS

965023

C 2.3

970080

O 8x1

972031

O 3x2.1

SHOCK DAMPING

SHOCK PISTONS

INITIAL PISTON

SETTING

➌

2 holes (1.6mm)

2 holes (1.7mm)

➋

REAR - LONG SHOCK ROD

➊

FRONT - SHORT SHOCK ROD

➊

There are two different thickness shims, use them as shown. Use the same procedure when building both front and rear shocks.

THICK Shim

O-ring

THIN Shim

306219

SHIM 3x6x2

970140

O 14x1.5

306219

SHIM 3x6x2

#306219 DOWNSTOP SHIMS

THICKER shim used, GREATER downstop is achieved.

3x6x2mm

SHORT

SHOCK ROD

SHORT

SHOCK BODY

1mm 2mm 3mm

FRONT SHOCKS

LONG

SHOCK ROD

IMPORTANT

Always use same shim thickness on right and left side to achieve same downstop.

REAR SHOCKS

LONG

SHOCK BODY

DETAIL

970120

O 12x1

EXTREMELY

IMPORTANT

INCORRECT

Do not push the shock rod straight through the lower shock body assembly; O-ring damage may result.

CORRECT

Twist the shock rod through the lower shock body assembly.

UPSTOP SHIM

3x6x2mm

Install the pivot balls with Professional Multi Tool (HUDY #183011)

1~1.5 mm

DETAIL

Page 37

7. SHOCK ABSORBERS

902205

SH M2x5

DEFAULT SHOCK REBOUND SETTING 0% REBOUND

FRONT (SHORT)

Oil 650cSt REAR (LONG)

Oil 450cSt

3~5x

UP & DOWN

➊ ➋ ➌ ➍ ➎

Extend the shock shaft completely. Fill the shock body with the shock oil. For the FRONT shocks (short) use 650cSt oil. For the REAR shocks (long) use 450cSt oil.

Move the shock shaft up and down a few times to release the air bubbles trapped beneath the piston.

Orient the filled shock vertically for several minutes with the shock shaft fully extended. The remaining air bubbles will release.

Follow the steps below to set the shock rebound to the default setting of 0%.

TIGHTEN FULLY

Gently place the shock cap onto the filled shock body and start to tighten the cup. Tighten the cap fully.

Gently push the shock shaft completely into the shock body. Excess oil will flow through the hole in the shock cap.

➏ ➐ ➑ ➒ ➓

Keep the shock shaft pushed in the shock body and insert the screw into the shock cap. Tighten gently.

SHOCK OIL

SHORT FRONT SHOCKS

Short Springs

#368021 ALU SHOCK SPRING RETAINING COLLAR (4)

LONG REAR SHOCKS

2x2x

Long Springs

UP & DOWN

6x push the shaft up and down. Untighten the screw. Tighten the screw.

IMPORTANT

Both FRONT SHOCKS must be the same overall length. Both REAR SHOCKS must be the same overall length.

Gently push the shock shaft completely into the shock body. Excess oil will flow through the hole in the shock cap.

The rebound will be at approx. 0%

FRONT SHOCKS (SHORT)

REAR SHOCKS (LONG)

Page 38

8. FINAL ASSEMBLY

366202

903310

960030

368045

REAR SHOCKS

Steering Servo (NOT INCLUDED)

960030

902308

107872 Velcro Tape

903308

361320

363510

306301

903310

903308

306310

903310

Receiver (NOT INCLUDED)

309402

(NOT INCLUDED)

309402

981212

Speed Controller

366050

301332

LiPo Battery Pack (NOT INCLUDED)

302665

362650

366114

301332

(NOT INCLUDED)

309402

902310

356200

Servo Screw

366115

902312

362290

962030

366160

366142

903310

352610

329912

Rear Tires (NOT INCLUDED)

BAG

902312

369707

Motor (NOT INCLUDED)

364090

902310

329912

365718~38 (NOT INCLUDED)

107871 HUDY SELF-ADHESIVE FOAM STRIP (2) 107872 VELCRO TAPE WITH DOUBLE SIDED TAPE 8x500MM 301332 REAR BODY MOUNT SET 6MM 302665 COMPOSITE BALL JOINT 4.9MM - CLOSED WITH HOLE (4) 306301 ANTENNA MOUNT - THIN 309402 BODY CLIP FOR 6MM BODY POST (4) 352610 ADJ. TURNBUCKLE M3 L/R 45 MM - SPRING STEEL™ (2) 356200 BRAKE/THROTTLE ARMS & STEERING SERVO ARMS - SET 361320 BODY MOUNT, BATTERY MOUNT - V2 & WING SHIM (2) 362290 STEEL STEERING BUSHING - SHORT (2) 362650 BALL END 4.9MM WITH THREAD 6MM (2) 364090 ALU ECCENTRIC MOTOR BULKHEAD INSERT 365718~38 ALU PINION GEAR HARD COATED 18~38T/48 (OPTION) 366050 COMPOSITE RADIO PLATE - V2 366114 COMPOSITE BATTERY STRAP - LONG 366115 COMPOSITE BATTERY STRAP - LONG XL 366142 COMPOSITE BATTERY HOLDER STAND (2) 366160 FOAM SPACER FOR BATTERY 366202 COMPOSITE SERVO MOUNT - HIGHER 368045 STEEL SCREW SHOCK PIVOT BALL WITH HEX (2)

960240

Front Tires (NOT INCLUDED)

960030

368045

107871

902308 HEX SCREW SH M3x8 (10) 902310 HEX SCREW SH M3x10 (10) 902312 HEX SCREW SH M3x12 (10) 903308 HEX SCREW SFH M3x8 (10) 903310 HEX SCREW SFH M3x10 (10) 960030 NUT M3 (10) 962030 WASHER S 3x6x0.3 (10) 960240 NUT M4 WITH SERRATED FLANGE (10) 981212 PIN 2x12 (10)

368200 SHOCK ABSORBERS COMPLETE SET (2)

306310 ANTENNA (2) 363510 LEXAN REAR WING (2) 369707 XRAY XT4 BODY 329912 STADIUM TRUCK WHEEL AERODISK WITH 12MM HEX - WHITE (2)

368200

902312

960030

Page 39

8. FINAL ASSEMBLY

960030

N M3

902312

SH M3x12

960030

N M3

SHOCKS

➋

SHOCKS

ALTERNATIVE 1

SHOCKS MOUNTED IN FRONT OF REAR SHOCK TOWER

(INITIAL SETTING)

➋

DETAIL

➊

➍

DETAIL

NOTE ORIENTATION

➌

INITIAL POSITION

ALU NUTS M3

#296530-B BLUE OPTION #296530-K BLACK OPTION #296530-O ORANGE OPTION #960030 STEEL INCLUDED #960031 SILVER OPTION

➊

902312

SH M3x12

SHOCKS

ALTERNATIVE 2

SHOCKS MOUNTED BEHIND REAR SHOCK TOWER

DO NOT USE FOR BASIC SET-UP

➍

INITIAL POSITION

NOTE ORIENTATION

➌

DETAIL

INITIAL POSITION

For the rear shock position cut holes into the Lexan rear wing.

Page 40

8. FINAL ASSEMBLY

SERVO LINK

Adjust servo link to fit your servo.

THREAD

28mm

902308

SH M3x8

THREAD

6mm THREAD

Install the pivot balls with Professional Multi Tool (HUDY #183011)

Servo (NOT INCLUDED)

Market "K-H-F"

Use appropriate servo arm: K - (23T) KO Propo / JR / Sanwa / Multiplex H - (24T) Hitec F - (25T) Futaba / Savox

NOTE ORIENTATION

Servo screw (NOT INCLUDED)

HUDY ALU SERVO HORNS

#293497 23T #293498 24T #293499 25T

HUDY CLAMP ALU SERVO HORNS

#293404 23T #293405 24T #293406 25T

For more in-corner steering and better steering response, aluminum servo horns may be used.

#366220 INDEPENDENT SERVO MOUNT - SET

903310

SFH M3x10

Page 41

8. FINAL ASSEMBLY

902310

SH M3x10

PINIONS

#365718 18T / 48P #365719 19T / 48P #365720 20T / 48P #365721 21T / 48P #365722 22T / 48P #365723 23T / 48P #365724 24T / 48P #365725 25T / 48P #365726 26T / 48P #365727 27T / 48P #365728 28T / 48P #365729 29T / 48P #365730 30T / 48P #365731 31T / 48P #365732 32T / 48P #365733 33T / 48P #365734 34T / 48P #365735 35T / 48P #365736 36T / 48P #365737 37T / 48P #365738 38T / 48P

Pinion

(NOT INCLUDED)

NOTE

ORIENTATION

➊

➋

NOTE

➊ Loosen the screw

➋ Insert motor into the bulkhead

NOTE ORIENTATION

➋

➊

➊ Adjust gear mesh ➋ Tighten the screw

Adjust the motor so the pinion meshes with the spur gear properly. Make sure the gear mesh is not too tight.

There should be a small amount of play between the teeth of the pinion gear and the spur gear.

Page 42

8. FINAL ASSEMBLY

Speed Controller (NOT INCLUDED)

903308

SFH M3x8

903310

SFH M3x10

Double-sided Tape

HUDY #107875 (NOT INCLUDED)

3x8mm

3x10mm

Double-sided Tape

HUDY #107875

(NOT INCLUDED)

Receiver (NOT INCLUDED)

Feed the receiver wire into the antenna tube

CUT Self-adhesive Foam Strip (#107871 HUDY)

Page 43

8. FINAL ASSEMBLY

902312

SH M3x12

903310

SFH M3x10

962030

S 3x6x0.3

ALTERNATIVE 1

FORWARD WEIGHT BALANCE POSITION

(INITIAL SETTING)

➌ ➌

NOTE

ORIENTATION

➍ ➍

(INITIAL SETTING)

The foam battery spacer can be installed either in front of or behind the battery.

FRONT BATTERY POSITION: More traction on FRONT suspension, more steering, recommended for medium- and high-traction tracks.

REAR BATTERY POSITION: More traction on REAR suspension, more stable, recommended for medium - and low-traction tracks.

EXTRA-LONG BATTERY HOLDER (#366115)

➋

➊

ALTERNATIVE 2

REARWARD WEIGHT BALANCE POSITION

LONG BATTERY HOLDER (#366114)

➋

➊

Using the standard battery holder positions the battery to the REAR.

➊

Before cutting and making holes on the BODY, put the unpainted body on the chassis to confirm the mounting position and location for holes and cutouts. Before cutting and making holes on the WING, put the unpainted wing on the wing holders to confirm the mounting position and location for holes and cutouts.

Before painting, wash the inside of the body with mild detergent, and then rinse and dry

➋

thoroughly.

➌

Mask all windows.

#323515 LEXAN REAR WING CENTER FIN - ZAP (2)

XRAY LEXAN REAR WINGS

#323510 1.0mm OPTION #323511 1.5mm OPTION #323513 1.0mm RANK OPTION #323517 1.0mm TEC OPTION #363510 1.0mm INCLUDED #363511 1.5mm OPTION #363512 2.0mm OPTION

➍

Apply paint masks as appropriate.

➎

Paint the body using paints formulated for polycarbonate bodies.

➏

When the paint is dry, remove the masking.

➐

Carefully cut out the body using appropriate scissors or cutting tools.

➑

When you have finished cutting, peel off the external protective films.

BODY REAMER (HUDY #107600)

WING CUTTING LINE OPTIONS

INITIAL POSITION

LESS TRACTION

MORE TRACTION

Page 44

8. FINAL ASSEMBLY

902310

SH M3x10

981212

P 2x12

Double-sided Velcro™ tape is used to seal the body against the side guards.

L=R

VELCRO™ TAPE WITH DOUBLE-SIDED TAPE

(Velcro™ tape - soft side)

(Velcro™ tape - hook side)

Page 45

960240

N M4

8. FINAL ASSEMBLY

Tires & Inserts (NOT INCLUDED)

903308

SFH M3x8

OPTIONAL ALU WING SHIMS

#293561 SILVER OPTION #293561-O ORANGE OPTION

Page 46

MAINTENANCE

SHOCK MAINTENANCE

The most important maintenance task for keeping consistent shock performance is refilling and bleeding them correctly. If built correctly, it will not be necessary to re-build them often. Replacing warped/hard o-rings, scarred piston rods, or shaved/split/loose composite upper and lower ball joints are also important.

• For club racing, it is recommended to check the shocks for air inside before each race and only re-fill and bleed them if necessary. Before each race day, make sure you take the spring off of each shock, hold it up to your ear, and quickly compress the shock rod fully into the body while listening for any air making a “whistling” or “squishy” sound as it passes through the piston holes. If you hear any air, refill and bleed your shocks. For high-competition racing, it is recommended that the shocks be re-filled and bled before a large event.

• If building or pairing new shocks, always make sure they are the same length using a shock length measuring tool and adjust the lower ball joints as needed.

• During regular shock operation, oil naturally gets on the shock shaft and drop-by-drop slightly gets out of the shock body. Shocks should be inspected regularly after each race, and oil replaced as required.

BEARING MAINTENANCE

Ball-bearings in an off-road car must be properly maintained for smooth operation and long lifespan.

The XB4 ball-bearings are degreased and are lubricated with HUDY Bearing Oil or HUDY Grease. The following procedures are recommended to clean all of the bearings in your off-road car. For highcompetition racing, we recommended doing this every 3-4 weeks, or before a major race.

➊ Remove the seals on both sides of the bearing (if present). If the seals bend a little and you can see

a kink, carefully flatten the kink out by hand.

➋ Spray the seals with motor cleaner and blow dry with compressed air.

➌ Spray the bearing on both sides with motor cleaner.

➍ Spin the bearing while it is still wet to dislodge any particles with the cleaner.

➎ Spray the bearing on both sides again.

If you spin test the bvearing after you have re-oiled and sealed it, it will not spin freely for an extended period of time. The lightest of oils may allow it to spin for 1-2 seconds. This is normal and once you have mounted the bearings in the car again, the drive train will spin freely.

➏ Blow both sides of the bearing dry with compressed air to make sure particles come out.

➐ Hold the inner part of the bearing with my left thumb/forefinger and spin it to make sure it

spins free without any abnormal vibrations or sounds.

➑ Place one drop of bearing oil into each side of the bearing.

➒ Replace both seals at the same time by lining them up on each side of the bearing and

lightly pressing them in all the way around the bearings circumference with your thumb and forefinger. Do not press too hard or use any type of tool, such as a wrench tip, to push the blue seals in as they will push in too far, bend and cause drag.

Make sure you use a motor cleaner that does not leave a residue after it dries as this may cause drag and wear in the bearings.