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Team Xray T4 2018 Edition

Team Xray T4 2018 Edition RC Touring Car
The Team Xray T4 RC touring car gets updated for 2018! The T4 2018 Edition comes equipped with multiple upgrades over the previous edition including an all new set of Ultra Low Profile shocks with a 4mm lower design for improved stability, new low profile shock towers, a new chassis design with new motor mounting plate position for further flex adjustments, an all new redesigned top deck with new layshaft bulkheads, new in-line chassis flex adjustments, and new ECS driveshafts.

ULP Shocks
XRAY was the first company to introduce the SLP shocks which lowered the CG of the car. Since that time, SLP shocks became the industry standard that everyone uses. With ongoing development and pushing performance boundaries, XRAY designed all-new unique T4 2018 EditionULP (Ultra Low Profile) shocks which are 4mm shorter than SLP shocks, thus improving the stability of the car. ULP shocks were developed to lower the CG of the car even more to the absolute lowest to further improve stability. With ULP shocks the T4 stays flatter, making it easier to drive in chicanes and making it more resistant to traction rolling, letting you carry more speed through high-traction sweepers. Steering response and cornering speed are significantly improved as well.

ULP Shock Parts
To lower the shocks, several parts were completely redesigned for the new ULP shocks. The Team Xray T4 2018 Edition’s all-new shock bodies are CNC-machined from premium Swiss 7075 T6 aluminum and hardened to ensure maximum lifespan. The aluminum upper and lower nuts have a new lower-profile design, including new sealing O-ring and upper composite ball joint. All other shock parts remain the same and are fully interchangeable between SLP and ULP shocks. With an intelligent design, the full range of existing XRAY SLP springs may also be used in the new ULP shocks, so you can still use the entire range of springs from previous T4 cars. The pistons remain unchanged, and the set includes 3- and 4-hole pistons with 1.0, 1.1, and 1.2mm diameter holes. The pistons are molded using special processes and composites to ensure extreme roundness while maintaining maximum stiffness and durability.

ULP Shock Towers
The T4 2018 all-new ULP (Ultra Low Profile) shock towers are 4mm lower to maximize the effect of the new ULP shocks to create a super-low profile which helps move the CG as low as possible. The shock positions ensure the same well-proven geometry as on the previous T4 platform. Machined from premium-grade 3.0mm graphite, the shock towers are smaller, lighter, and more compact.

The all-new T4’18 chassis was redesigned to fit the new motor mount plate which has extra positions for flex adjustment for super-fine flex tuning. The new rear flex point positions improve traction of the car. The cutouts for the motor were modified to work with the new motor mount which allows the motor to move 1mm more to the center. The ultra-narrow chassis is only 86mm wide and with a variety of chassis flex adjustments generates exceptional traction and gives excellent steering characteristics. Weight distribution and balance characteristics were all primary design considerations while engineering the new car to allow the weight to be moved as close as possible to the chassis centerline in order to maintain optimal balance.

The T4 2018 2.2mm thick chassis is CNC-machined from premium-grade graphite material. The chassis features pre-drilled holes for optional parts such as chassis weights, graphite motor guard, graphite adjustable battery holder, and battery strap. Optional aluminum chassis – available in either full stiff or flex version – allow you to tailor your T4 to particular track conditions. Both aluminum chassis are CNC-machined from premium Swiss 7075 T6 aluminum and are black coated and laser engraved.

Top Deck
All-new redesigned T4 2018 top deck works with the new layshaft bulkheads and motor mount which moves the motor 1mm closer to the center of the car. The shape of the rear portion of the top deck has been specifically designed to achieve maximum traction and in-corner steering, and the shape allows for easy access to the pinion. The top deck is machined from premium-grade 2.0mm graphite. An optional belt tensioner can be mounted to the top deck.

Motor Mount Plate
An all-new T4 2018 Edition motor mount plate – part of the motor mount – features new extra rearmost holes for improved traction. The motor mount plate is connected to the chassis via an M3 nut and an extra countersunk screw which can be placed ahead of the nut if more reinforcement is needed. Additionally, the nut can be removed and 1 or more of 4 holes behind the nut can be used as extra flex adjustment options. The motor mount plate allows the use of the in-line chassis flex system. The motor mount bulkhead is connected to the chassis by 2 screws under the layshaft and the front mounting screw. The front mounting screw is a button-head type which is more tweak-free compared to a countersunk screw.

Layshaft Bulkheads
The all-new Team Xray T4 2018 motor mount was redesigned to allow the motor to move 1mm more to the center of the chassis. With the motor more into the center, the car rolls less which makes it easier to drive. The all-new layshaft and motor mount bulkheads are part of the Top Deck Flex adjustment.

In-Line Chassis Flex
The XRAY In-Line Chassis Flex is very intelligent and is an extremely helpful set-up feature that helps to adjust chassis flex for various track conditions. With the servo mount and motor mount design, the chassis reinforcement graphite brace can be installed in 5 different flex adjustment configurations. The stiffer the In-Line chassis flex is set, the better the steering response as well as in-corner steering.

ECS Drive Shafts
All-new Team Xray T4 2018 Edition ECS drive shafts are 51mm long for optimized steering and stability. 50mm and 52mm ECS drive shafts are still optionally available to suit particular track conditions. The legendary XRAY ECS drive shafts equalize the speed between the drive shaft and the wheel. With a unique 2-piece joint between the axle and the wheel, the same extreme wheel turning angle is divided into two shallower angles without causing binding. Regardless of cornering speed and wheel angle, the inner wheel will not bind or vibrate. Drive through the corner is more stable, more precise, and easier. With the new ECS drive shafts, wheel vibrations and noise are decreased to minimum, steering is increased, and cornering speed & smoothness are noticeably increased. Drive shafts are exclusively manufactured from special world-renowned, top-secret, self-developed HUDY Spring Steel. The drive shafts are strategically lightened – see the hollow end of the dog bone – to guarantee the lowest possible weight without compromising strength or durability. These specially-lightened drive shafts can only be manufactured from special HUDY Spring Steel which was developed for extreme racing conditions. The drive shafts have been additionally hand-ground for maximum precision and to provide true rotation and unbinding drivetrain operation.

Upper Clamps
The Team Xray T4 aluminum upper clamps allow for very quick & easy roll center adjustment with 4 different roll center mounting positions. All upper clamps are identical and can be used both front & rear. Made from premium Swiss 7075 T6 aluminum, orange anodized.

Suspension Geometry
From the narrow arms, through the tiny front and rear suspension blocks, to the small and robust steering blocks, every suspension part has been specially designed to provide responsive racing characteristics in all racing conditions. Over the years XRAY has successfully gained and utilized extensive suspension geometry knowledge and self-developed suspension stiffness technology, which have been utilized when designing suspension parts. The ultra-lightweight suspension parts are molded from a special composite material that makes the parts very light yet very durable to withstand the rigors of high-performance racing.

ARS System
The Team Xray T4 2018 Edition kit includes both standard and Active Rear Suspension (ARS) rear suspension. ARS offers great adjustment possibilities and driving characteristics. ARS suspension consists of: suspension arms, graphite 0° C-hubs for optimal flex characteristics, hard steering blocks, and ARS linkages which connect suspension holders with the suspension block. The angle of ARS linkages –set by adding/removing shims on the suspension block and suspension holder – changes the toe-in characteristics of the rear tires during chassis roll.

Suspension Holders
Aluminum suspension holders feature Integrated Suspension Settings (ISS) which allow super-fast & easy suspension geometry setting. Suspension holders allow more durable mounting of the suspension arms. With the suspension holders, the geometry of the car does not change even under hard crashes. Thanks to the mounting system, arms move very freely to give higher traction and the car feels smoother in corners which also positively influences steering characteristics. Suspension holders are CNC-machined from premium Swiss 7075 T6 aluminum and have been designed to provide the lightest and strongest possible support framework for the car.

Suspension Arms
The Team Xray T4 2018 suspension arms feature the innovative SFATM (Suspension Flex Adjustment). Whether you are racing in low or high-traction track conditions, you can easily adjust the flex of the arms as appropriate by quickly adding optional graphite stiffeners which will change the stiffness of the suspension. The arms include 4 holes where the graphite stiffeners are mounted and the areas around the holes are strengthened for maximum durability.

Graphite Stiffeners
Innovative and unique SFA graphite stiffeners allow for super-quick suspension flex adjustment to easily adjust the traction of the car in various track conditions. Whether you drive in low- or high-traction conditions, with the smart graphite stiffeners you can very quickly adjust your car to suit it to current conditions. At the beginning of a race event when traction is low, the arms are used without the SFA graphite stiffeners. When the traction increases, the suspension can easily be made stiffer by mounting the SFA graphite stiffeners for more stability and easier driving characteristics. The graphite stiffeners give the car maximum stability in chicanes and allow for easier and smoother steering. Made from 1.6mm thick high-quality CNC-machined graphite material, the stiffeners can be easily mounted or removed by only a few screws whenever needed.

The C-hubs in the T4 are also carried over from the T3 platform and feature large openings for quicker & easier assembly/disassembly of the CVDs/ECS. The entire CVD/ECS assembly can be easily inserted/removed through the C-hub without the need for disassembly. The large openings prevent collision of CVD/ECS with C-hub in serious crashes. The C-hubs are available in all standard caster angles (2°, 4°, 6°) and are also available in 4 different hardnesses that are optimized for particular racing conditions.

Steering Blocks
The small and tough steering blocks each feature two Ackermann positions. The front steering blocks also feature small but robust 5x10x4mm ball-bearings to minimize unsprung weight. The steering blocks are available in three different hardnesses, which are optimized for particular racing conditions.

Rear Uprights
Hard “H” rear uprights are included to improve the stability of the car and to increase cornering speed of the T4. The rear uprights feature 0° toe to ensure stability and prevent suspension geometry changes in hard crashes. There are two different roll center positions on the rear uprights, and roll center positions can be easily adjusted by adding shims between the upright and the turnbuckle ball joint. The rear uprights feature small but robust 5x10x4mm ball-bearings to minimize unsprung weight. The rear uprights are available in three different material formulations that were specifically blended for particular racing conditions. A medium “M” and graphite “G” hardness rear upright is available as an option. 1-hole uprights were developed as an optional fine-tuning part to compliment the standard 2-hole uprights for high-traction tracks where more roll of the car is desired. These 1-hole uprights provide an additional option versus the standard 2-hole upright when the outer hole does not allow enough roll, and the inner hole creates too much roll.

Steering System
The Xray T4’s dual-arm steering system is supported by 6 ball-bearings and runs on aluminum stands. Ackermann is easily adjusted by inserting shims between the steering plate and steering rods. The steering system features a lower mounting position for the steering linkage, which makes the car handle easier going into corners. More aggressive handling is easily adjusted by inserting shims between the steering blocks and steering rods. The design of the front lower suspension holder allows easy access from the front of the car for quick & easy Ackermann adjustment.

Steering Plate
The steering plate provides increased steering into the corner and makes the car more stable and easier to drive in chicanes. Machined from premium Swiss 7075 T6 aluminum material, and orange anodized.
Floating Steering System. The all-new, unique floating servo holder is now standard in the T4’17. The floating steering system is disconnected from the chassis and works fully independently without affecting flex. This makes the car easier to drive in high-traction conditions, and chassis roll is reduced especially when driving through the curbs. The car also handles better on bumpy tracks. In combination with #302570 Steering Plate, you can adjust 4 different flex characteristics. Using the graphite steering plate, chassis flex is medium; when using the steering plate with aluminum stand, flex becomes stiffer for more aggressive handling and increased steering. Thanks to the unique design of the servo holder, changing the flex of the steering system is quick & easy. There is no need for other parts, and there is no need to assemble/disassemble the servo holder.

Servo Saver
The hugely-popular XRAY servo saver was improved and updated for the T4 RC touring car. Additional positions on the servo saver were added to make steering linkage adjustment easier. The servo saver consists of 4 springs which makes the servo saver strong enough to provide the precise steering racers demand, while still being flexible enough to prevent servo damage in hard crashes. The servo saver has interchangeable bushings to fit most popular servos.

Adjustable Top Deck
The top deck design allows installation of an optional aluminum stand which changes the RC touring car’s flex characteristics. By adding the reinforcement stand, the rear layshaft bulkhead screws are removed which generates more traction and makes the car easier to drive but results in more on-power push. Recommended for low- or high-traction conditions. For low- and medium-traction conditions, it is recommended to use the top deck without the aluminum stand.

The ultra-efficient and well-proven drivetrain has been carried over from the T3 platform. The drive ratio is suitable for current high-performance brushless motors (stock or modified) and LiPo batteries. Both the front solid axle and the rear gear diff feature 38T pulleys and the central layshaft features 20T pulleys for an efficient internal ratio of 1.9.

Rear Drive Shafts
The T4 features 50mm long lightweight aluminum drive shafts machined from premium Swiss 7075 T6, hard-anodized and black-coated for stylish looks. The aluminum drive shafts are designed for use in the rear. To reduce rotating weight, the rear CVD drive shafts feature super-lightweight wheel axles which have the outer diameter specially ground to remove the material while keeping the same strength thanks to the use of HUDY Spring Steel™.

Wheel Hubs
Ultra-lightweight wheel hex drive hubs are CNC-machined from 7075 T6 black-coated aluminum. These ultra-true hex hubs are specially machined to reduce rotating weight while guaranteeing wobble-free wheel mounting. Optional offsets are available (-0.75, +0.75, +1.5mm).

XRAY Gear Differential
The Team Xray T4 gear diff increases on-power steering which is needed on nearly all types of tracks, and is ideal for both carpet and asphalt tracks. The gear diff includes a composite case and cover with pulley. Differential gears are made from tough composite material, precision-molded composite gears combined with light aluminum drive shafts, which create a lighter and super-smooth gear differential. Another key advantage of the gear diff is that it is maintenance-free. When the diff is correctly built, there is no need for maintenance for a very long time… no need for frequent oil changes, and no leakage due to the superior sealing system.

XRAY Solid Axle
Rotating mass is one of the most significant influences on the performance of an RC racecar. The T4 features a unique lightweight composite XRAY Front Solid Axle. The Front Solid Axle has a very stiff and ultra-lightweight structure that was achieved by molding the entire solid axle from XRAY’s own self-formulated composite material. Outdrives are fully exchangeable which allows quick & easy servicing, while the unique drive shaft connection – eliminating the former drive shaft blades – enables direct power transfer to the axle and eliminates play between the drive shaft and outdrives, improving steering precision and increasing overall steering.

Centrally-positioned Layshaft
The spur and pinion gears have been aligned along the absolute centerline of the chassis to optimize the placement of the polar moment and ensure ideal balance of the drivetrain components.

Middle Layshaft
The aluminum layshaft is strategically CNC-machined to minimize rotating weight without compromising strength or integrity. The hollow layshaft is perfectly round with zero run out, eliminating drivetrain vibration and producing a positive balance. Composite pulleys key solidly to the layshaft.

Kevlar Drive Belts
The 2-belt 4WD drivetrain concept provides maximum efficiency and highest performance using Kevlar®-reinforced drive belts for ultra-high durability. Narrow (3mm) front and rear drive belts have been specially ground for minimal thickness and flexibility.

Shock Springs
With an intelligent design, the full range of existing XRAY SLP springs may also be used in the ULP shocks, so you can still use the entire range of springs from previous T4 cars. To make the car more stable and easier to drive under various track conditions, the 2.5C linear springs were chosen as the basic setting on both front and rear shocks. The 2.5C linear springs provide the best balance between steering, traction, stability, and response. The 4S springs – like all other XRAY springs – are manually measured, selected, and matched into pairs to guarantee precisely equal length and damping characteristics.

Bearing Holders
The adjustable bearing eccentric holders were also updated to mate with the new, narrower bulkheads. As with previous XRAY designs, both front and rear bulkheads feature integrated belt-tension adjustment through the use of adjustable bearing eccentric holders, eliminating the need for a separate belt tensioner while reducing friction and improving drivetrain efficiency.

Integrated Adjustments
Both front and rear bulkheads feature integrated belt-tension adjustment through the use of adjustable bearing eccentric holders, eliminating the need for a separate belt tensioner. The eccentric bushings allow also diff height adjustment. By rotating the diff eccentric holders, the height of the diff can be adjusted by 1mm.

Anti-roll Bars
The wobble-free anti-roll bar system is mounted to the front & rear bulkheads via bearings from outside for extra-smooth movement and quick & easy changes and adjustment. The roll bar turns in ball-bearings for maximum precision and free movement. Anti-roll bar height is adjustable via a screw. The complete range of different anti-roll bar thicknesses is designed to work with the ball-bearing roll bar mounting system. Front 1.4mm and rear 1.3mm anti-roll bars are included as standard. Anti-roll bars have laser-engraved stripes (corresponding to bar thickness) for easy identification.


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