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.

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.

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.

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.

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 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.

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.

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

XRAY guarantees this model kit to be free from defects in both material and workmanship within 30 days of purchase. The total monetary value under warranty will in no case exceed the cost of the original kit purchased. This warranty DOES NOT cover any components damaged by use or modification or as a result of wear. Part or parts missing from this kit must be reported within 30 days of purchase. No part or parts will be sent under warranty without proof of purchase. Should you find a defective or missing part, contact the local distributor. Service and customer support will be provided through local hobby store where you have purchased the kit, therefore make sure to purchase any XRAY products at your local hobby store. This model racing car is considered to be a high-performance racing vehicle. As such this vehicle will be used in an extreme range of conditions and situations, all which may cause premature wear or failure of any component. XRAY has no control over usage of vehicles once they leave the dealer, therefore XRAY can only offer warranty against all manufacturer's defects in materials, workmanship, and assembly at point of sale and before use. No warranties are expressed or implied that cover damage caused by what is considered normal use, or cover or imply how long any model cars' components or electronic components will last before requiring replacement.

Due to the high performance level of this model car you will need to periodically maintain and replace consumable components. Any and all warranty coverage will NOT cover replacement of any part or component damaged by neglect, abuse, or improper or unreasonable use. This includes but is NOT limited to damage from crashing, chemical and/or water damage, excessive moisture, improper or no maintenance, or user modifications which compromise the integrity of components. Warranty will NOT cover components that are considered consumable on RC vehicles. XRAY DOES NOT pay nor refund shipping on any component sent to XRAY or its distributors for warranty. XRAY reserves the right to make the final determination of the warranty status of any component or part.

LIMITATIONS OF LIABILITY.

XRAY makes no other warranties expressed or implied. XRAY shall NOT be liable for any loss, injury or damages, whether direct, indirect, special, incidental, or consequential, arising from the use, misuse, or abuse of this product and/or any product or accessory required to operate this product. In no case shall XRAY's liability excess the monetary value of this product.

Take adequate safety precautions prior to operating this model. You are responsible for this model's assembly and safe operation.

Disregard of the any of the above cautions may lead to accidents, personal injury, or property damage.

XRAY MODEL RACING CARS assumes no responsibility for any injury, damage, or misuse of this product during assembly or operation, nor any addictions that may arise from the use of this product. All rights reserved.

QUALITY CERTIFICATE

XRAY MODEL RACING CARS uses only the highest quality materials, the best compounds for molded parts and the most sophisticated manufacturing processes of TQM (Total Quality Management). We guarantee that all parts of a newly-purchased kit are manufactured with the highest regard to quality. However, due to the many factors inherent in model racecar competition, we cannot guarantee any parts once you start racing the car. Products which have been worn out, abused, neglected or improperly operated will NOT be covered under warranty.

We wish you enjoyment of this high-quality and high-performance RC car and wish you best success on the track!

In line with our policy of continuous product development, the exact specifications of the kit may vary. In the unlikely event of any problems with your new kit, you should contact the model shop where you purchased it, quoting the part number. We do reserve all rights to change any specification without prior notice. All rights reserved.

TOOLS REQUIRED

• Ball Joint Wrench (HUDY #181110)
• Pocket Hobby Knife (HUDY #188981)
• Special Tool for Turnbuckles, Nuts (HUDY #181090)
• Turnbuckle Wrench 4mm (HUDY #181040)
• HUDY Tweezers Curved (HUDY #188971)
• HUDY Tweezers Straight (HUDY #188970)
• 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)
• Socket 7.0mm (#177035 - HUDY EXCLUSIVE Limited Edition)
• Reamer (#107602 - HUDY EXCLUSIVE Limited Edition)
• Scissors (HUDY #188990)
• Professional Multi Tool (HUDY #183011)

NOT INCLUDED

Alexander Hagberg (Factory Driver)

▶ 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.

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:

• 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.
• STYLE D - indicates parts that are optional.

INCLUDED

* Kit includes smaller but sufficient amount of oil and grease to build the car.

ALSO REQUIRED

• Transmitter
• Receiver
• Speed Controller
• Steering Servo
• Electric Motor & Pinion Gear with Setscrew
• LiPo Battery
• Battery Charger
• Bearing Oil (HUDY #106230)
• 450cSt (#106345) HUDY Premium Silicone Oils
• 10.000cSt (#106510) HUDY Premium Silicone Oils
• Tires
• 1/12 Bodyshell
• Lexan™ Paint
• Double-sided Tape (HUDY #107875)

1. FRONT SUSPENSION

FRONT SUSPENSION FLEX SETTING

This section details how to adjust the chassis flex for different track conditions:

• SOFT (NO BRACE): Makes the car initially less responsive, but will provide more mechanical traction. Recommended for low-traction carpet conditions, and asphalt tracks.
• MEDIUM (1 BRACE): Brace mounted to the carbon arm with posts provides a balance between initial response and mechanical traction. Recommended for most track conditions.
• STIFF (2 BRACES): Both braces mounted to the carbon arm give maximum responsiveness but decrease mechanical traction. Recommended for high-traction track conditions (such as US black carpet).

TIP: The kit front suspension brace is now 1.6mm, instead of the previous 2.2mm, for an improved handling & overall feel of the car.

#372094 CARBON FRONT BRACE FOR NARROW SUSPENSION ARM PLATE 2.2mm: Optional 2.2mm front suspension brace stiffens the front lower arm, which makes the car more initially responsive, reduces chassis roll, and helps to increase cornering speed for spec classes on high-grip surfaces.

FRONT COIL SPRINGS

Options for front coil springs with different C-values and colors:

• #372192 C=0.7 GOLD OPTION
• #372191 C=0.9 SILVER OPTION
• #372190 C=1.1 BLACK OPTION
• #372186 C=1.5-1.7 GOLD OPTION
• #372187 C=1.8-2.0 SILVER INCLUDED
• #372188 C=2.1-2.3 BLACK OPTION

CAMBER - KINGPIN AXLES

Options for camber adjustment using kingpin axles:

• #372260 0.5º 4 DOTS OPTION
• #372261 1º 3 DOTS INCLUDED
• #372262 1.5º 1 DOT OPTION

CASTER ADJUSTMENT SETTING

Caster is adjusted by the shims placed under the front ball. Please see the table on the right to understand how to set the caster.

• MORE CASTER: Increases front traction, especially on-power. More likely to traction roll.

• LESS CASTER: Reduces front traction, especially on-power. Less likely to traction roll.

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 the tire diameter and desired caster.

FRONT WHEELBASE ADJUSTMENT

FRONT POSITION ALTERNATIVE LONG WHEELBASE: LONG wheelbase is recommended for larger tracks with long sweepers. Makes the car more stable and easier to drive.

REAR POSITION ALTERNATIVE SHORT WHEELBASE: SHORT wheelbase allows the car to rotate better in corners to maintain cornering speed. Recommended for tight, technical tracks or tracks with several 180° hairpin corners.

1. FRONT SUSPENSION (Continued)

FRONT SUSPENSION FLEX SETTING

Diagram showing components for SOFT (no brace), MEDIUM (1 brace), and STIFF (2 braces) flex settings.

• SOFT: Makes the car initially less responsive, but will provide more mechanical traction. Recommended for low-traction carpet conditions, and asphalt tracks.
• MEDIUM: Brace mounted to the carbon arm with posts provides a balance between initial response and mechanical traction. Recommended for most track conditions.
• STIFF: Both braces mounted to the carbon arm give maximum responsiveness but decrease mechanical traction. Recommended for high-traction track conditions (such as US black carpet).

#372094 CARBON FRONT BRACE FOR NARROW SUSPENSION ARM PLATE 2.2mm: Optional 2.2mm front suspension brace stiffens the front lower arm, which makes the car more initially responsive, reduces chassis roll, and helps to increase cornering speed for spec classes on high-grip surfaces.

BUMPSTEER SETTING

The thickness of shims changes the steering linkage angle. Thicker shims give decreased in-corner steering, but car becomes easier to drive. Use 2mm bump steer as INITIAL SETTING.

STEERING BLOCKS

• OUTSIDE POSITION: The outer hole provides less Ackermann effect, making the car more aggressive. Front traction is increased.
• INSIDE POSITION: The inner hole provides more Ackermann effect, making the car less aggressive and easier to drive. Front traction is decreased.

#375222 FRONT WHEEL AXLE 1mm LESS TRAIL: Less front axle trail frees up the car and reduces front traction, improving cornering speed for all classes. It is particularly useful for spec classes on high traction black carpet.

1. FRONT SUSPENSION (Continued)

CAMBER ADJUSTMENT

Optional kingpins are available to adjust camber if needed.

INCREASING THE CAMBER ANGLE: Will increase the car steering, however, will make the car more difficult to drive.

DECREASING THE CAMBER ANGLE: Will decrease the steering which will make the car easier to drive and also helps to prevent traction rolling.

CAMBER - KINGPIN AXLES

• #372260 0.5º 4 DOTS OPTION
• #372261 1º 3 DOTS INCLUDED
• #372262 1.5º 1 DOT OPTION

ALU NUTS M3

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

1. FRONT SUSPENSION (Continued)

FRONT DROOP ADJUSTMENT

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.

INITIAL SETTING: Above steering block (0.3mm), Below steering block (2.0mm)

MORE DROOP: Will make the car initially less responsive, but it will give the car more front traction, 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 tracks.

LESS DROOP: Will decrease roll but the car will change direction faster. 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.

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.

FRONT COIL SPRINGS

• #372192 C=0.7 GOLD OPTION
• #372191 C=0.9 SILVER OPTION
• #372190 C=1.1 BLACK OPTION
• #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: Make the car easier to drive over bumps and increase steering as they make the car roll more, especially in the middle of a corner.

HARDER SPRINGS: Make the car more responsive and increase initial steering. Recommended for high-traction and flat tracks.

FRONT DAMPING SETTING

The Front Damping Setting is adjusted using different viscosity of oils.

THINNER OIL: Makes the car more responsive but also more difficult to drive. Thinner oil increases cornering speed. Recommended for low-traction tracks.

THICKER OIL: Makes the car less responsive but easier to drive. Thicker oil also increases stability, but decreases cornering speed. Recommended for high-traction tracks.

2. REAR SUSPENSION

PART LIST

Numbers in parentheses () refer to quantities when purchased separately.

2. REAR SUSPENSION (Continued)

POD ANGLE SETTING

The rear pod angle is adjusted using the set screw at the rear of the chassis. A 3.5mm gap between the chassis plate and rear pod means the rear pod is sitting flat. Increasing this gap increases the pod angle, creating a pro-squat effect. Pro-squat decreases on-power steering and increases rear traction. Reducing the gap below 3.5mm introduces an anti-squat effect, increasing on-power steering while decreasing rear traction.

Use M3x4mm screws with BIG head.

2. REAR SUSPENSION (Continued)

PIVOT MOUNTING ALTERNATIVE

REARWARD: Pivot mounted in rear chassis holes with no ball stud shims. Improved rotation from shorter rear pod geometry. Provides most initial steering and rotation; best suited for high traction carpet tracks.

MIDDLE: INITIAL SETTING: Pivot mounted in middle chassis holes with a 2mm ball stud shim. Balanced front and rear traction; well suited for most conditions.

FORWARD: Pivot mounted in forward chassis holes with 4mm ball stud shims. Creates the most forgiving handling that allows more aggressive driving without fear of losing rear traction.

The three side link mounting positions on the new pod front plate maintain proper side link alignment when using each of the 3 different center pivot mounting positions. Keeping the side links in-line with the center pivot provides more neutral and dynamic handling for all conditions, improving drivability & corner speed.

TIP: #303122 & 303123 shims are NOT INCLUDED in the kit.

ROLL CENTER ADJUSTMENT

The roll center can be adjusted by adding or removing shims from beneath the aluminum pivot mounts.

IMPORTANT: When changing the shims under the chassis pivot holder, the opposite adjustment of the same thickness must be made above the rear pivot holder to keep the pod in the same position.

• LOWER ROLL CENTER: No shim under alu chassis pivot holder. Creates more traction and increases chassis roll. NOTE: The pivot holder will extend below chassis plate in this position.
• STANDARD ROLL CENTER: INITIAL SETTING: The standard roll center is the best starting point for most conditions as it gives the most neutral handling. The chassis pivot holder sits in line with the lower chassis plate.
• HIGHER ROLL CENTER: Adding shims below the chassis pivot holder increases rotation both on- and off-power.

2. REAR SUSPENSION (Continued)

POD LINKAGE ANGLE ALTERNATIVE

LESS SHIMS: Raising the side links’ FRONT pivot point (reducing shims) will further increase in-corner steering, but may be more difficult to drive since the rear inner wheel will lift up more during cornering. 0.5-2.0mm shims may be added for fine tuning.

STRAIGHT 2.0mm SHIMS: INITIAL SETTING: Straight link alignment makes the car easier to drive.

MORE SHIMS: Raising the side links’ REAR pivot point (adding shims) reduces in-corner steering. This orientation is typically NOT used or recommended.

POD LINKAGE POSITION: Always align POD linkage positions according to pivot mounting position.

2. REAR SUSPENSION (Continued)

REAR RIDE HEIGHT & DROOP SETTING

The rear ride height and rear droop settings are directly related to each other, making it important to use the correct rear axle eccentric holder when adjusting the rear bump spring preload to set the pod droop value.

• STIFFER rear bump spring: will be more reactive and will improve on-power steering.
• SOFTER rear bump spring: will be less reactive and will be reduce on-power steering.

CONICAL-PROGRESSIVE rear bump spring: provides more aggressive handling than a straight-linear rear bump spring. Using a conical-progressive bump spring is usually the faster and most responsive setup.

STRAIGHT-LINEAR rear bump spring: provides more neutral handling to make the car easier to drive.

When using a CONICAL-PROGRESSIVE SPRING, press the spring onto the smaller diameter end of the spring retainer.

TAPERED (CONICAL-PROGRESSIVE)

• #373582 C=1.5-1.6 SILVER INCLUDED
• #373583 C=1.7-1.8 GOLD OPTION

When using a STRAIGHT-LINEAR SPRING, press the spring onto the larger diameter end of the spring retainer.

SIDE SPRINGS (STRAIGHT-LINEAR)

• #373589 C=0.5 BLACK OPTION
• #373584 C=0.6 SILVER OPTION
• #373585 C=0.9 GOLD OPTION
• #373586 C=1.2 BLACK OPTION
• #373587 C=1.5 SILVER OPTION
• #373588 C=1.8 GOLD OPTION

TIGHTENING the rear bump spring: increases ride height and reduces droop.

LOOSENING the rear bump spring: decreases ride height and increases droop.

▶ VIDEO TECH TIP: POD DROOP ADJUSTMENT

Use the same pressing method for all parts in the instruction manual. Follow PAGE 11 / Step 1

2. REAR SUSPENSION (Continued)

Apply oil to the entire composite side tube before installing in the aluminum tube. After assembly, check for smooth operation. It is very important to check and re-oil the tubes at least once per race day. Oil thickness can be adjusted depending on the track conditions.

• For HIGH traction use HARDER oils
• For LOW traction or ASPHALT use SOFTER oils

HUDY OILS 50ml

SIDE TUBE ANGLE

Shims of different thickness installed under ball studs are used for different side tube angle adjustment.

The angle of the side tubes has a minor effect on the car's performance.

• HIGHER ANGLE: Stiffer feeling, less roll. More progressive damping action.
• LOWER ANGLE (FLATTER): Softer feeling, more roll. More linear damping action.

3. SOLID AXLE

PART LIST

Numbers in parentheses () refer to quantities when purchased separately.

BALL DIFFERENTIAL

#375009 X12 BALL DIFFERENTIAL - SET

#930238 CERAMIC BALL-BEARING AXIAL F3-8 3x8x3.5

#930230 XRAY CERAMIC BALL 3.175MM (12)

▶ VIDEO TECH TIP: BALL DIFFERENTIAL

GEAR DIFF - SPUR GEARS

SPUR GEARS 64P - SMALL

• #375860 60T OPTION
• #375862 62T OPTION
• #375864 64T OPTION
• #375876 66T OPTION
• #375868 68T OPTION

*Must be used with: #375022 X12 REAR SOLID AXLE STEEL SHAFT FOR 1-PIECE CHASSIS - SMALL SPUR GEAR

SPUR GEARS 64P

• #375872 72T OPTION
• #375875 75T OPTION
• #375876 76T OPTION
• #375878 78T OPTION
• #375880 80T INCLUDED
• #375884 84T OPTION
• #375888 88T OPTION
• #375892 92T OPTION

#374900 XRAY GEAR DIFFERENTIAL 1/12 PAN CAR - SET

Bearing Oil (HUDY #106230): All ball-bearings are factory pre-oiled. Regularly service, clean and lubricate all ball-bearings with HUDY Bearing Oil (#106230). Replace the bearings as soon as they get a "gritty" feeling to prevent inefficiency and rear axle bearing blowouts. Make sure to use only original XRAY ball-bearings which all have specific tolerances, axial and radial play and are all individually selected. Using any 3rd party ball-bearings may result into failures and break of the car.

These eccentric bushings adjust the RIDE HEIGHT of the rear pod. Make sure to use the SAME eccentric bushings on BOTH sides.

INITIAL SETTING

Track-Width: To set track-width, use the hole in the POD lower plate as the centre point; this hole should always be centred between the two rear wheels once overall track-width is set. To set the track-width more easily, set the car on a ruler or use a digital vernier caliper. Rear track-width is directly affected by wheel offsets, which can vary depending on tire brand.

To increase track width, add more shims on both sides of the rear axle. There are extra 0.5mm and 1.0mm included in the kit for wider track width adjustment.

IMPORTANT! DO NOT overtighten this screw.

IMPORTANT! DO NOT overtighten this screw.

▶ BUILD VIDEO: SOLID AXLE

4. SHOCK ABSORBER

PART LIST

Numbers in parentheses () refer to quantities when purchased separately.

HUDY SILICONE OILS - 50ml

#104002 HUDY AIR VAC VACUUM PUMP (OPTION)

Make sure to orient the piston so the hole is NOT blocked by the c-clips.

Carefully remove the shock piston from the frame, and remove all excess plastic flash.

DEFAULT SHOCK SETTING FOR SHOCK ABSORBER

1. Extend the shock shaft completely. Fill the shock body with the shock oil but only 1/3.
2. Slowly move the shock shaft up so the shock oil will flow under the shock piston. Extend the shock shaft.
3. Extend the shock shaft completely to release the air trapped beneath the shock piston. Fill the shock shaft body with the shock oil but NOT fully approx. 3mm from the top of the shock body.
4. Install the 5x1 o-ring onto shock shim.
5. Place the shock shim with the o-ring into the shock body.
6. Install the 2x2 o-ring into the shock cap.
7. Install the shock cap.
8. Screw fully the shock cap in the filled shock body. Excess oil will spill from the shock. Tighten completely.

▶ BUILD VIDEO: CENTER SHOCK

5. FINAL ASSEMBLY

PART LIST

Numbers in parentheses () refer to quantities when purchased separately.

CHASSIS FLEX ADJUSTMENT

Diagrams illustrating chassis flex adjustment options: SOFT (no braces), MEDIUM, MEDIUM STIFF (Initial Setting), and STIFF.

• SOFT: Generates more mechanical traction. Recommended for low- to medium-traction carpet as well as asphalt. (NO BRACES)
• MEDIUM: Braces installed, attached at middle & rear only. This setting is a good compromise between mechanical traction and steering response. Ideal for most track conditions.
• MEDIUM STIFF: INITIAL SETTING: Braces installed, attached at middle-front, middle, and rear. A good compromise between mechanical traction, and steering response. A good option for higher traction conditions.
• STIFF: Braces installed, attached at front, middle-front, middle and rear. This is the stiffest, most stable setting. Recommended for high-traction carpet tracks (such as US black carpet). The car will have less roll but will also have less overall traction.

#376335-L CARBON SIDE BRACE 1.0mm (2): The thinner 1.0mm side braces are recommended for low-traction carpet and asphalt track conditions where more mechanical traction is required. The thinner braces provide less initial reaction but will enhance mid corner steering and increase chassis roll due to the increased traction.

5. FINAL ASSEMBLY (Continued)

SHOCK ANGLE & POSITION

• MORE SHOCK ANGLE: More shim in rear. Makes the damping more progressive and increases on-power steering. Recommended for high-traction track conditions when you need to free up the rear.
• LESS SHOCK ANGLE: More shim in front, less shim in rear. Makes the damping more linear. Increases stability, decreases on-power steering. Recommended for low- to medium traction track conditions.

ALTERNATIVE FLOATING servo mount: The floating servo mount option is the best all-around choice for a forgiving and neutral handling. The servo is also less likely to move or shift in a hard crash.

ALTERNATIVE FIXED servo mount: The fixed servo mount gives maximum initial steering response, which is sometimes desired for certain racing conditions, such as spec racing on high grip carpet.

MINI SERVO POSITIONS

MINI Servo (NOT INCLUDED) (Examples: KO Propo, Futaba, Savox, Power HD)

See PAGE 27 for more information about Ackermann settings.

MICRO SERVO POSITIONS

MICRO Servo (NOT INCLUDED) (Example: Sanwa)

See PAGE 27 for more information about Ackermann settings.

5. FINAL ASSEMBLY (Continued)

#293350 HUDY ALU FIXED SERVO SAVER

This aluminium servo saver eliminates the flex of the standard composite servo savers that is used, which improves rigidity and thus, the steering response of your car.

#293351 HUDY ALU ADJ. SERVO SAVER

The unique solution of eccentric inserts allows for 3 different Ackermann positions to be used, to fine tune the handling of your car by quick changes with little effort.

Note the orientation of servo saver when servo is in neutral.

ALTERNATIVE FLOATING servo mount

INITIAL SETTING

Shimming of the servo when using the floating servo mount may be necessary to achieve the correct height and geometry. Use the reference chart below and apply it to your specific servo type.

Important! Make sure that the servo saver does not protrude below the lower chassis line when the car is ready to race.

Make sure to center the servo saver along the chassis centerline.

5. FINAL ASSEMBLY (Continued)

ALTERNATIVE FIXED servo mount: The fixed servo mount gives maximum initial steering response, which is sometimes desired for certain racing conditions, such as spec racing on high grip carpet.

STEERING LINKS FOR OUTSIDE HOLES ON STEERING BLOCKS

26.8mm

STEERING LINKS FOR INNER HOLES ON STEERING BLOCKS

23.6mm

NOTE ORIENTATION

Make sure to center the servo saver along the chassis centerline.

5. FINAL ASSEMBLY (Continued)

ACKERMANN SETTING

Ackermann is directly affected by wheelbase length and linkage position on the steering blocks. The configurations below are based on the use of a standard servo.

▶ VIDEO TECH TIP: STEERING SYSTEM

ALTERNATIVE for MICRO AND STANDARD SERVO

Wheelbase: SHORT
Servo mounting: AHEAD of posts
Servo saver: ball studs BEHIND

ALTERNATIVE for MICRO SERVO

Wheelbase: LONG
Servo mounting: AHEAD of posts
Servo saver: ball studs BEHIND

Use shims between servo and posts.

MICRO servos: SANWA SXR - 3mm / SAVOX SW - 1mm

STANDARD servos: NO shims

ALTERNATIVE for STANDARD SERVO

Wheelbase: LONG
Servo mounting: BEHIND posts
Servo saver: ball studs IN FRONT

Mount the 6mm ball studs on the forward side of the servo saver.

STANDARD servos: KO Propo - No shim, Futaba - 2mm shim, Savox SH - 2mm shim

5. FINAL ASSEMBLY (Continued)

ALU PINION GEARS 64P

5. FINAL ASSEMBLY (Continued)

GEAR MESH

Adjust the gear mesh so there is appropriate space between the spur gear and pinion teeth. There should be a very small amount of freeplay.

▶ VIDEO TECH TIP: ELECTRONICS INSTALLATION

Double-sided Tape (HUDY #107875)

5. FINAL ASSEMBLY (Continued)

BATTERY BACKSTOP

The adjustable battery backstop system secures the battery in the car in a tweak-free, non-fixed manner to help improve traction and makes it more stable and easier to drive.

It is very important that battery has a very small amount of play in all directions so it does NOT tweak the car, but the play cannot be too much otherwise the battery may fall out in crashes.

Adjust the shim thickness to match battery pack height. If there is no play between the backstop and pack, use a thicker shim. If it is too loose, use a thinner shim to reduce the gap.

Make sure to have a small amount of play

▶ VIDEO TECH TIP: BATTERY MOUNTING SYSTEM

BATTERY MOUNTING POSITIONS

There are 5 battery positions. The further forward the battery is positioned in the car, the easier it will be to drive but less responsive. The further rearward the battery is located, the more aggressive it will feel with more steering.

5. FINAL ASSEMBLY (Continued)

FRONT TRACK-WIDTH

The shim behind the wheel bearing affects the front track-width.

• WIDER TRACK-WIDTH: Easier to drive, less steering, less responsive.
• NARROWER TRACK-WIDTH: More steering, more responsive, but more difficult to drive.

GENTLY TIGHTEN the wheel nuts so the wheel turns freely, but without excessive axial play.

ALU NUTS M3

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

▶ VIDEO TECH TIP: FRONT DROOP & RIDE HEIGHT

▶ VIDEO TECH TIP: TWEAK & SIDE SPRINGS SETTING

▶ VIDEO TECH TIP: BODYSHELL MOUNTING

#293120 HUDY Alu RC Fan 24mm - Side Mount 2 Hole (NOT INCLUDED)

CONTACT INFORMATION

XRAY EUROPE
XRAY, K VÝSTAVISKU 6992, 91101 TRENCIN, SLOVAKIA, EUROPE
PHONE: +421-32-740 11 00, FAX: +421-32-740 11 09, info@teamxray.com

XRAY USA
RC AMERICA, 2030 Century Center Blvd #15, Irving, TX 75062, USA
PHONE: 214-744-2400, FAX: 214-744-2401, xray@rcamerica.com

www.teamxray.com

 /TeamXray  /TeamXray  /TeamXray ▶️ /XrayRacing  /+TeamXrayRC