New front C-hubs were specially developed for the GT on-road platform. After extensive tests of various caster angles, the final 6° caster block was selected as the best choice to work in the wide range of racing conditions found at GT events.
The new C-hub geometry significantly improves steering characteristics over the previous 16° hubs. The reduced caster angle also helps to reduce tire wear, creating more consistent handling during longer main events.
The steering blocks feature new steering Ackermann plates that improve corner entry steering by increasing the outside wheel angle. Machined from graphite, the plates are easy to mount to the steering blocks for replacement or adjustment.
The rear uprights are now moulded from a harder material that reduces flex in hotter conditions and makes the car more stable in the corners.
The uprights feature all-new graphite extensions that move the camber link mount higher and further inboard to shorten the rear camber link. The graphite extensions feature 5 different roll center positions for more tuning options on the GTXE’22.
The rear uprights use the larger 8x16x5mm outer ball-bearings for increased reliability and lifespan. The smart design allows the same upright to be used on both left & right sides, reducing the number of spares needed in your parts box. The wheelbase position is adjustable using 2 shims along the lower suspension pin.
The rear uprights feature integrated geometry adjustments including camber, upper and lower roll center and wheelbase.
SUSPENSION ARMS
Both front and rear suspension arms are now softer than the previous GTXE kits. In comparison to the extra-hard suspension arms included in previous GTXE kits, the new GTXE’22 features Medium front and Hard rear suspension arms. This combination of softer arms helps to increase traction in every track conditions.
SHOCK EXTENSIONS
All-new aluminum suspension arm extensions create completely new shock geometry specific for the needs of the GT category. The shock extensions increase stability and improve the corner speed.
SHOCK TOWERS
Both front and rear shock towers feature updated geometry with different shock mount and camber link positions on a tower that is lower overall compared to previous versions.
The new shock mount locations were repositioned in relation to the location of the lower shock mount extensions on the suspension arms, resulting in improved corner speed.
The new front roll center positions help create more steering and the revised rear roll center positions free up the rear end of the car and helps with stability on power.
UPPER LINKS
The shorter front and rear upper camber links match the rear hub graphite camber extensions and front and rear inner camber link positions to make the car more reactive in front and provide more rotation from the rear suspension.
SHOCK SPRINGS
The all-new front and rear shock springs were specially developed for GT on-road racing.
There are two new spring choices – both softer that original GTXE springs, and both featuring a progressive spring rate. For the initial setting the stiffer of the two new springs are used in front with the softer springs in rear. In this configuration the GTXE will have maximum traction in most track conditions.
XRAY shock springs are manually measured, selected, and matched into pairs to guarantee precisely equal length and damping characteristics.
BRACES
A longer front composite brace makes the car more precise and easier to drive. The brace is now mounted with two screws to the chassis for additional strength.
The longer rear brace is moulded from a medium-stiff composite mixture for proper flex control and allows the installation of optional graphite inserts to reinforce the brace to make it even stiffer (suitable for high-traction conditions).
SERVO SAVER
The servo saver features a new conical spring that is longer and stronger. The new spring ensures more precise steering and improved reliability.
The servo saver posts feature a new locking system that keys into the chassis plate to ensure the servo saver setting will not change while running.
To improve servo saver reliability (especially in dusty conditions), it is moulded from graphite material that is more resistant and efficient in dusty conditions. The dual-arm steering system is simple yet effective, featuring an integrated easily adjustable servo saver, and a Swiss 7075 T6 aluminum steering plate.
Ackermann is easily adjusted by changing steering link mounting positions on the steering plate. Bump steer is adjusted by inserting shims between the steering plate and steering linkage.
SERVO SAVER TOP DECK
The new top deck features additional clearance so the servo saver will not bind when overtightened and will always work freely. Fits both GTX and GTXE.
CENTRAL DOGBONE DRIVE SHAFTS
Central dogbone driveshafts are lighter than CVD drive shafts for improved acceleration. They can also have a longer lifespan thanks to the easier maintenance of the dog bone and outdrives, reducing servicing requirements.
All the drive shaft parts are machined from Hudy Spring Steel and are specially hardened.
ANTI ROLL BAR
To work with the new shock geometry, the front and rear anti-roll bars included in the kit are softer than previous versions.
The GTX anti-roll bars help control chassis roll, increase corner speed and improve the stability of the car.
The front & rear roll bars are easily mounted to the bulkheads and can be adjusted using the connected linkages.
Manufactured from spring steel material, anti-roll bars of different thickness are available for fine-tuning.
GEAR DIFFERENTIAL
The high-volume differentials improve vehicle control and consistency over long runs and enhance reliability. The differentials feature larger capacity cases and larger internal gears with more teeth for improved differential moment. The larger oil volume and the shape of the gear teeth reduce overheating. The diff pins have stronger design to improve reliability.
DIFF OUTDRIVES
Super-lightweight diff outdrives are machined from HUDY Spring Steel™ with unnecessary material removed from the outer part of the outdrives to reduce rotating weight without affecting durability. The inner portions of the outdrives are additionally hand-ground for maximum precision and fitment into the diff case.
The outdrives are hardened using HUDY’s own special hardening process to provide extended lifespan and reliability.
DIFF GEARS
Differential main gears are manufactured from HUDY Gear Steel on a precision manual gear machine. The material was specially formulated and developed for use in gears. All gears are hardened to provide the longest possible lifespan.
PINION GEAR
To improve drive train efficiency, the 13T pinion gears are now included for both front and rear bulkheads. Thanks to the higher 3.54:1 internal ratio, vehicle acceleration has also been improved.
MOTOR MOUNT
The motor is connected to a mounting plate, with the assembly then inserted into an integrated motor holder/drivetrain support. The design of this system allows quick & easy motor rotation to adjust gear mesh, and then clamping into position to prevent further movement.
The motor mount is machined from Swiss 7075 T6 and is 2mm wider for improved durability.
SHOCK ABSORBERS
Longer front & rear shock shafts are now +3mm longer for increased set-up possibilities and to allow more suspension travel.
The shock caps feature 4 bleed holes for easier building and more precise rebound control. Multiple shock membrane choices are available to tune the suspension to a wide variety of track conditions.
Oversized big-bore shocks featuring 16.2mm I.D. shock bodies are externally threaded with an adjustable collar for quick & easy spring preload adjustment. The shock bodies are hardcoated in a titanium color and feature a 1-piece alu shock cap.
SHOCK PISTONS
Ultra-precise shock pistons feature 6-, 8- and 10-hole options. The big-bore pistons are molded from tough, well-proven Delrin® material for smooth action and durability. The precision molding production process ensures perfect piston roundness after production, so that the pistons move super-smoothly inside the shock bodies for identical, perfect action in all shocks.
TURNBUCKLES
To guarantee maximum reliability, all turnbuckles are manufactured from a special blend of HUDY Spring Steel™ which is specifically formulated for turnbuckles. The turnbuckles have a tougher core and are well suited for steering system and rear upright linkages.
BUMPER
The compact front bumper is made from high-resilience foam. The front upper bumper holder and lower composite bumper are molded from rigid composite to withstand hard crashes.
HEX HUBS
Ultra-lightweight 17mm wheel hex drive hubs are CNC-machined from Swiss 7075 T6 black-coated aluminum. GTX includes +2mm off-set both front and rear.
The alu hex hubs are specially machined to reduce rotating weight while guaranteeing wobble-free wheel mounting.
BALL BEARINGS
The drivetrain ball-bearings are greased instead of oiled to maximize the lifespan of the ball-bearings, especially in dusty conditions. For increased reliability, the front and rear transmission ball-bearings as well the 2-speed ball-bearings feature metal shields.
BODY
XRAY’s self-designed GTX body – made from high-quality Lexan™ material – features high-downforce areas: front windscreen for proper airflow, side downforce areas for higher stability. The high-performance, low-profile aerodynamic body was designed by XRAY to perfectly fit the GTX and GTXE. The rear part of the body includes 3 wing struts for added durability; a high-strength wing is included.
The GTXE body is available as an option only.
WEIGHT BALANCE ADJUSTEMENT
Weight balance on the GTXE is easy to adjust for different track conditions. Weight can be moved to the front, middle, or rear by moving the suspension arms as required to achieve the best handling.
ADJUSTMENT POSSIBILITIES
The GTXE features fully-adjustable front & rear suspension geometry. For quick & easy adjustment, we recommend using set-up tools and accessories from HUDY, the world leader of RC tools.
The extensive and impressive range of adjustment possibilities includes:
• Caster
• Camber
• Toe
• Kick-up
• Anti-dive
• Anti-squat
• Ride height
• Downstops
• Track-width
• Lower roll center
• Upper roll center
• Bump steer
• Wheelbase
• Ackermann
• Fully-adjustable shocks
• Adjustable front and rear differentials
• XRAY Multi-Flex™
CHASSIS BALANCE
The chassis design focuses on balanced weight distribution and weight transfer. Centerline holes are pre-drilled in the chassis plate for easy balancing with the HUDY Chassis Balancing Tool #107880.
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