Xray T4 – 2013 Specs 1:10 Luxury Electric Touring Car Kit #300019
This is the XRAY T4, 2013 EU Rubber-Spec Competition 1/10 Scale Electric Touring Car Kit. For almost a full year the XRAY Research and Development team has been designing and refining the T4 chassis. In total, 5 completely different prototype chassis were made and tested all around the world on a variety of surfaces and condition during that time. Whether it was carpet or asphalt, indoor or outdoor, hot or cold conditions, thousands and thousands of laps were run and countless amounts of data was recorded, evaluated and compared. Of those prototypes, only the best ideas and parts were chosen to be incorporated into the final prototype. This prototype was then hard-core tested for several months by XRAY team drivers all around the world. The drivers all returned with the same results, feedback and conclusion: "This is the best performing, most innovative XRAY touring car that I have ever tested or driven." With a clear vision and mission in mind, the research team set out to accomplish five main design improvements on the T4:
- Lowered Platform
- Improved Chassis Flex
- Increased Traction
- Improved Steering Characteristics
- Improved Weight Balance
Details: - Chassis: The T4 features a redesigned chassis specifically designed for all kinds of track conditions. The 2.2mm thick chassis is CNC-machined from premium-grade graphite material and provides maximum traction under low traction conditions while maintaining stability and forgiveness under high traction conditions. Weight distribution and balance characteristics have been enhanced. Due to the increase in LiPo capacity resulting in additional weight and heavier duty electronics to handle the increased power of modern brushless systems, the chassis was designed to allow the weight to move as close as possible to the chassis centerline in order to maintain balance. In addition, the bulkhead mounting holes were narrowed by 6mm to make the mounting points as narrow as possible for more traction and better balance. The front and rear portions of the chassis were strategically redesigned to provide maximum steering and traction. The chassis is an ultra-narrow 94mm wide and features pre-drilled holes for options such as: chassis weights, graphite motor guard and battery strap.
- Top Deck: The top deck has been redesigned for the narrow bulkheads. The shape of the rear portion of the top deck has been specifically designed to achieve maximum traction and in corner steering. The top deck is machined from premium-grade 2.0mm graphite. An optional belt tensioner can be mounted to the top deck.
- Super Low Profile (SLP) Shocks: T4 shock absorbers were completely redesigned and re-engineered. Everything is updated and the shocks are aluminum. The SLP shocks were developed to lower the CG of the car to the absolute maximum in order to improve stability. With the SLP shocks the T4 stays flatter, making it easier to drive in chicanes and more resistant to traction roll, letting you carry more speed through high traction sweepers. SLP shocks feature redesigned shock caps, shock collars, pistons, as well as all redesigned composite parts. The shocks also feature bladders and foam inserts for smoother shock operation. Shock rods have been especially hardened to ensure long life and maximum strength. Updated pistons were also designed and produced. The set of pistons include 3 and 4 hole pistons with 1.0, 1.1, and 1.2mm diameter holes. The pistons are molded using special methods and composites to ensure extreme roundness, while maintaining maximum stiffness and durability. The Super Low Profile shocks are almost 8mm shorter compared to the shocks on the T3. The shock bodies are CNC-machined from premium Swiss 7075 T6 aluminum and hardened to ensure maximum life. The shocks consist of a shortened shock body but with a larger diameter to retain the same volume of oil as the previous, longer T3 shocks.
- Super Short Shock Springs (4S): The 4S springs have been specifically designed to complement the SLP shocks and are 5mm shorter than previous XRAY springs. The T4 comes equipped with C2.7 linear springs in the front to provide maximum stability and steering and C2.3-2.6 progressive springs in the rear to provide maximum traction and cornering speed. The main advantage and benefit of progressive springs is that as the car initially enters the corner they work like a C2.3 spring to provide maximum traction. At the same time, when the chassis begins to roll, in the middle of the corner, the spring rate progressively increases until it works like a C2.6 which allows the car to maintain maximum cornering speed. The 4S springs, like all the other XRAY springs, are manually measured, selected and matched into pairs to guarantee precisely equal length and damping characteristics.
- Shock Tower: To maximize the effect of the SLP shocks, both front and rear shock towers were completely redesigned and lowered by 15mm to help move the CG as low as possible. Machined from premium-grade 3.0mm graphite, the shock towers are smaller, lighter, more compact and after vigorous testing, have been race-tuned to increase on-power steering.
- Aluminum Bulkheads: To accommodate the ultra-low design of the T4 platform with centralized weight placement, all the bulkheads were completely redesigned. These small and light bulkheads are positioned more to the chassis centerline to provide maximum traction, steering and balance. All bulkhead parts 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. All 4 differential bulkheads now share a common design in order to reduce spare parts requirements and increase parts compatibility. The left and right layshaft bulkheads also share a common design and are interchangeable with one another. The bulkheads are anodized in a distinctive orange color. (Note: Color may vary slightly between products.) XRAY’s legendary attention to detail is noticeable in all the precisely chamfered edges.
- Motor Mount: The redesigned motor mount has been isolated from the layshaft bulkhead in order to eliminate unwanted tweak. The motor mount is fixed to the bulkhead by two screws and to the chassis via M3 nut providing the tweak free platform. Thanks to this unique design the motor mount has been moved 3mm closer to the chassis centerline, which increases stability and improve balance of the car. The motor mount is CNC-machined from premium Swiss 7075 T6 aluminum.
- Upper Bulkhead Clamps: To coincide with the super narrow bulkheads, the upper bulkhead clamps were also redesigned. With 3 different roll center mounting positions, adjusting the roll center of the chassis is quick and easy. The clamp height has been reduced by 2mm compared to the previous platform, which adds additional flexibility for roll center adjustments by allowing you to add or remove shims under the ball studs. In order to keep the same well-proven roll center geometry the roll center positions have been moved outside to offset the narrow bulkhead design.
- Bearing Holders: The adjustable bearing eccentric holders were also updated to mate with the 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.
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