The Radical SR3 XX

The new SR3 XX brings unparalleled technology to the fingertips of drivers around the globe. Developed in conjunction with Radical’s long-term data partner AiM Technologies, the SR3 XX benefits from an all-new electrical architecture, allowing drivers access to more data and feedback than ever before.

The SR3 XX is the first production race car to feature AiM’s new solid-state technology, which controls not only power management, but also a suite of data options and technology to help Radical drivers be the fastest in the field. It will also be the first car to feature AiM’s new Formula steering wheel technology, akin to those usually seen in high-level single-seaters and Le Mans Prototypes.

The new solid-state Power Distribution Module (PDM) acts as the SR3 XX’s electrical heart, replacing a conventional wiring loom to send, store and process electrical data and telemetry quickly and more efficiently. The system not only offers a 65% weight saving over traditional wiring, but also makes diagnostic and fault resolution simpler than ever.

To put the power of this new technology at the driver’s fingertips, the SR3 cockpit has been re-designed, with a new dashboard designed around a new multi-function steering wheel incorporating a built-in LCD display to bring real-time information to the driver. The system is fully customisable, with hundreds of data feed combinations to choose from, with up to four fields being displayed at any one time.

Multiple vehicle control buttons are also incorporated in the steering wheel, enabling maximum driver control. The new dashboard incorporates a centre-stack design with secondary control functions via momentary touch-pad switching, back-lit for night-time visibility.

The new technology opens up a range of new data logging and review options, with Radical offering a host of extra equipment that can be bolted-on to tailor the SR3 XX’s system to a driver or team’s needs. Among the new features, new data fields such as tyre temperature and pressure sensors will be offered. These new data channels help the track-day and club racer optimise their tyre and aerodynamic settings for both peak performance and endurance.

These features, coupled with ride height sensors, will be of particular value to those embarking in Radical’s endurance format races, not to mention longer-duration events such as the 25 Hours of Thunderhill, in which an SR3 scooped outright victory last December beating GT3, LMP3 and LMP2 machinery in the process.

Drivers can choose between Radical’s proven 1340cc or 1500cc four-cylinder RPE-Suzuki engines to power the new model. Both are driven through a six-speed sequential gearbox with paddle shift and Quaife limited-slip differential, and are coupled with a new-generation racing exhaust system.

Styling upgrades for the SR3 XX include revised LED race lighting, composite mirrors and new rear-wing endplates. For additional comfort, new 60mm wider moulded twin- and single-seat options have been introduced, offering greater lateral stability and safety. These are designed to work in harmony with the bespoke seat insert systems favoured by professional racers from Formula 1 down.

The new technology opens up a range of new data logging and review options, with Radical offering a host of extra equipment that can be bolted-on to tailor the SR3 XX’s system to a driver or team’s needs. Among the new features, new data fields such as tyre temperature and pressure sensors will be offered. These new data channels help the track-day and club racer optimise their tyre and aerodynamic settings for both peak performance and endurance.

These features, coupled with ride height sensors, will be of particular value to those embarking in Radical’s endurance format races, not to mention longer-duration events such as the 25 Hours of Thunderhill, in which an SR3 scooped outright victory last December beating GT3, LMP3 and LMP2 machinery in the process.

Drivers can choose between Radical’s proven 1340cc or 1500cc four-cylinder RPE-Suzuki engines to power the new model. Both are driven through a six-speed sequential gearbox with paddle shift and Quaife limited-slip differential, and are coupled with a new-generation racing exhaust system.

Styling upgrades for the SR3 XX include revised LED race lighting, composite mirrors and new rear-wing endplates. For additional comfort, new 60mm wider moulded twin- and single-seat options have been introduced, offering greater lateral stability and safety. These are designed to work in harmony with the bespoke seat insert systems favoured by professional racers from Formula 1 down.

 

TECHNICAL DATA (1500CC OPTION)

SR3 XX STANDARD FEATURES

ENGINE

  • Gen 4 RPE-Suzuki 1500cc 4-cylinder dry sump oil system (optional)
  • Gen 4 RPE-Suzuki 1340cc 4-cylinder dry sump oil system (standard)
  • Latest Life Racing ECU with detailed interrogation function for maintenance and analysis
  • XX-generation hi-flow racing exhaust system

 

TRANSMISSION

  • Six-speed sequential gearbox
  • Formula 1TM ‘style’ paddle-activated gearshift system with auto-blipper
  • Quaife final drive and limited-slip differential
  • Rear-wheel-drive

 

SUSPENSION

  • Fully adjustable Nik-link suspension system, front and rear unequal length top and bottom wishbones, fabricated uprights, forged centre locked hubs and interchangeable roll bars
  • Forged centre locked hubs
  • Interchangeable roll bars
  • Choice of bespoke Intrax fully adjustable dampers

 

BRAKES

  • Radical four-pot calipers front & rear
  • 280mm x 25mm fully-floating 48-vane disc brakes

 

SAFETY

  • Aluminium, foam filled 77L fuel tank
  • Full electronic fire extinguisher system

 

TYRES

  • Bespoke slick tyre
  • Bespoke wet tyre

 

DIMENSIONS

  • Length: 4077 mm
  • Width: 1799 mm
  • Height: 1093 mm

 

BODY

  • Lightweight spaceframe chassis with FIA-specification safety cell and crash structure
  • LMP-inspired, high-downforce composite bodywork
  • XX-generation LED race lighting including FIA high-intensity central rain light
  • Bi-plane high-downforce road/trackday rear wing and diffuser
  • XX-generation Le Mans composite mirrors
  • XX-generation rear wing endplates
  • Double front dive planes

 

COCKPIT

  • Two-seater chassis with twin or single-seat options, optimised for use with a moulded race seat insert
  • AiM Formula Wheel with integral LCD display, lightweight shift paddles and on-wheel switching. Display functions include LCD rev counter, gear indicator, shift light
  • XX-generation dashboard with waterproof, backlit momentary touchpad
  • Dash-mounted brake bias adjuster
  • Wind deflector

 

DATA & ELECTRONICS

  • XX-generation solid-state Power Distribution Module (PDM) with Controller Area Network (CAN) linked wiring and telemetry
  • XX-generation data integration and logging allowing additional data logging (see below)

Find out more here 


 

Report by radicalsportscars.com


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