Xray present their new for 2021 X12 Formula chassis, developed with a focus on improving durability, improving adjustability for better performance on a variety of surfaces, and resistance to chassis tweak after impacts. The tweak free design improvements are achieved with a new rear centre pivot mounting system and new pod components. An all-new aluminium centre pivot mounting system improves traction and stability of the car, eliminates tweak issues and provides new adjustment choices to position the pivot point. The one-piece bulkheads achieve maximum durability and eliminate tweak issues after a crash while the graphite rear upper plate has been redesigned to integrate with the new bulkheads to improve durability and to eliminate tweak after a crash. New graphite chassis side braces offer three different installation settings to alter chassis stiffness to match track conditions. To top it all off there is an all new stealth looking black design, with all the aluminium anodised black.
2021 All-new Features:
– Development focused on improving durability, improving adjustability for better performance on a variety of surfaces, and resistance to chassis tweak after impacts
– Tweak free design improvements achieved with a new rear centre pivot mounting system and new pod components
– All-new aluminium centre pivot mounting system improves traction and stability of the car, eliminates tweak issues, and provides new adjustment choices to position the pivot point.
– New one-piece bulkheads achieve maximum durability and eliminate tweak issues after a crash
– Graphite rear upper plate redesigned to integrate with the new bulkheads to improve durability and to eliminate tweak after a crash
– All-new graphite chassis side braces offer three different installation settings to alter chassis stiffness to match track conditions
– New chassis plate updated for the rear pivot and chassis braces
– New rear graphite brace integrates with the new side braces and wing mount
– New front upper and lower arms improve strength and reliability while working with the new front tube system
– New front tube system to adjust the stiffness of the front suspension
– New aluminium front anti-roll bar holder lowers the CG
– Longer front kingpins for greater range of front droop adjustment to improve the steering characteristics
– Stealth looking black design
The chassis was redesigned to accommodate the all-new Tweak-Free Pod System and side braces. The X1’21 chassis continues to offer a wheelbase adjustment using one of three mounting positions for the front suspension. Depending on the installation choice, wheelbase can be selected from the standard length or +/- 4mm alternatives. The super-narrow chassis creates maximum traction while still having excellent steering and cornering speed. The chassis’ torsional stability also helps eliminate the “scrub effect” in high-speed corners.
An optional chassis plate machined from a stiffer graphite material was developed for very high traction conditions or for tires that offers a lot of steering which makes the standard car more difficult to drive. This optional chassis makes the car more stable and easier to drive by reducing oversteering problems.
The rear suspension of the X1 incorporates many of the improvements found in the new X12’21 pod design including the all-new Tweak-Free Pod Mounting System. The new pivot system improves traction and stability, and it eliminates tweak issues after crashes. The all-new pod assembly includes black anodised aluminium bulkheads and revised graphite upper and lower pod plates. The new one-piece rear bulkheads achieve maximum durability compared to previous configurations and use traditional eccentric inserts to adjust rear axle height in ½ mm increments. The all-new graphite upper plate was redesigned to mount to the bulkheads with centering pins and 4 screws to secure the assembly in proper alignment and to minimise the chances of tweak after an impact on the track.
POD Mounting System
All-new aluminium Tweak-Free Pod Mounting System improves traction and vehicle stability, plus it helps eliminate tweak issues after crashes. The new system allows for a significantly lowered roll centre, a lowered centre of gravity, and a new pivot height adjustment using different shims. The pod mounting position choices include the standard rearward mounting position where the centre pivot is located in-line with the side link pivot balls on the rear pod plate, and the new forward location that places the pivot 2mm forward of the link mounting points.
The all-new bulkheads are a 1-piece tweak-free design that is more rigid and robust. The new bulkheads feature centering pins on the top surface that align the upper pod plate during assembly and prevent movement between the components during a crash. To further enhance the assembly’s strength and resistance to tweak, the upper pod plate now uses 4 mounting screws to secure it to the bulkheads. The 1-piece bulkheads utilise eccentric bushing inserts for the rear axle height adjustment. CNC-machined from premium extra-hard Swiss 7075 T6 black-coated aluminium for extended life and a stylish look.
Rear Ride Height
The X1’21 bulkheads allow for very quick & easy ride height adjustment using eccentric axle holder bushings. The axle height is adjustable in ½ mm increments over a 5mm range. Smart & easy.
Rear Pod Upper Plate
The all-new graphite upper plate now mounts to the bulkheads with centering pins and 4 screws to secure the assembly in proper alignment and to minimise the chances of tweak after an impact on the track. The rear pod upper plate is the base for the centre shock and the side tubes. Machined from premium high-grade graphite, the pod plate is very strong and gives rigidity to the entire rear assembly. The side tubes mount to the rear pod upper plate to control pod movement in standard configuration, and an optional side shock is available for those that prefer the single damper design.
All-new graphite side braces are mounted to the rear brace, extending forward along the edge of the chassis. The braces are secured to the chassis via aluminium posts and offer three flex settings to alter the chassis characteristics for different track conditions.
Rear Link Brace
To integrate with the new chassis side braces, the rear link brace was redesigned as part of the chassis Multi-Flex system and also functions as the mounting point for the independent wing mount system. The rear link brace design allows for a wide range of battery placement adjustments and features a convenient O-ring battery mounting system. The graphite rear link brace is the mounting point for the side tubes and side springs, and functions as a backstop for the battery pack as well.
The front suspension was redesigned for improved reliability, strength, lowered CG and improved ease of adjustment. Front upper arms, front lower arms, anti-roll bar mounting system, kingpin axles and mounting stands are all new. The new system features a unique front tube system for a simple roll adjustment for the front suspension.
Front Lower Arms
The front lower arms were redesigned to allow access to the new front tube. The shape of the arm is designed to be more robust for improved durability. The extra material reinforces the arm and prevents it from bending in hard crashes. The arm also incorporates an access window to reach the new front tube for easier installation and tuning. The arm’s special graphite material with a stronger compound hardness reduces flex, increasing stability and improving drivability in high traction conditions. The front lower arm also features two mounting positions to set the car’s front width. The softer front lower arms from previous X1 versions are still available as options and are recommended for use on low-traction tracks, or when using harder front tires, to generate more steering.
Front Tube System
All-new front upper arm allows to mount the front tube which helps to adjust the hardness of the front suspension. Depending on the traction conditions and surface, the front tube helps to adjust front suspension for particular track conditions. Using thicker oil on the front tube makes the car less responsive but easier to drive and increases stability. Softer oil improves cornering speed and steering but makes the car a bit more difficult to drive.
Front Upper Arms
The front upper arms were redesigned to accommodate the all-new front tube system and the new low CG anti-roll bar mounting.
The X1’21 features a new aluminium anti-roll bar holder system integrated with the front body and wing mount that lowers the overall CG. The wobble-free, fully-adjustable wire anti-roll bar system is mounted in holders that are now located on the front wing mount plate via bearings 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 ball screw.
The super-smooth, hardened steel kingpins are 3mm longer than on the previous X1 for even greater front droop adjustment range to better set up the car on various traction conditions and track layouts.
All aluminium parts are now black anodised for a great stealth looking design.