In our continual quest to reduce the cost of racing
while maintaining all the thrills, the SR3 RSX features a new high-performance
variant of the RPE 1500 Generation 3 short stroke engine, with more mid-range
power and torque for faster laps, at the same time delivering longer service
intervals and improved efficiency.
The 2015 Generation 3 four-cylinder engine features
a new larger-diameter stainless steel tubular exhaust manifold, bigger 45mm
individual throttle body induction system and redesigned air box, including
bespoke inlet trumpets tuned for optimum torque, power and response.
Whilst the SR3 RSX retains the class leading,
confidence inspiring and FIA-approved SR3 spaceframe chassis, the differences
are obvious as soon as you set eyes on the spectacular new styling. The stepped
cockpit surround echoes current Le Mans Prototype (LMP) styling whilst still
affording excellent visibility for the driver and passenger. Advances in
Computational Fluid Dynamics (CFD) modelling have seen the SR3 RSX gain a
redesigned front diffuser. This features a ’double-tunnel’ profile from leading
edge to rear and for the first time integrates into the wheelarch leading edges
for improved airflow. This in turn improves the front aerodynamic efficiency of
the car without compromising front-rear balance, and also creates greater
stability under braking.
The front view is dominated by an 8-LED race
lighting array,affording improved forward visibility and track illumination for
night or poor-weather racing. Moving to the rear a new open-deck tail improves
airflow, grip and cooling at the back of the car, and incorporates
high-intensity LED brake and rain lighting. The rear diffuser profile has been
greatly revised using experience gained from the RXC development programme,
with a lowered deck angle to improve ’ground effect’ aerodynamic grip. Above
this sits a new dual exit exhaust system.
For the first time, the SR3 RSX features
fully-floating disc brakes front and rear as standard. 280mm 48-vane ventilated
discs are gripped by four-piston calipers for phenomenal braking performance,
and a hard-line braking system for greater consistency and improved feel over a
full race distance. Intrax Racing Suspension adjustable dampers complete the
package, making the SR3 RSX the most advanced specification yet.
The SR3 RSX features the new AIM MXL2 multifunction
LCD dashboard and datalogger, with expanded capability and a new high-contrast
display. The MXL2 offers a black to white ratio nearly double its predecessor, fused
with a graphical LCD offering great flexibility in alerts and information,
including a real-time track map location for the first time. An ambient light
sensor keeps the backlight at optimum brightness levels. The latest-generation
SmartyCam HD GP can be added to the system to provide video with a realtime
overlay of data, ideal for lap time improvement or corporate use at up to 720p
resolution.
