Formula E car

The fully-electric FIA Formula E Championship is designed as an ‘open championship’ like Formula 1 where participating manufacturers and constructors can build and race their own vehicles. However in its first year, Formula E provides the teams with the developed Spark-Renault SRT_01E battery electric race car. From season two constructors are able to develop and race their own powertrain.

The cars for the inaugural season are built by the French company Spark Racing Technology, led by Frédéric Vasseur and works together with renowned firms from motorsport:
– The Italian firm Dallara constructed the monocoque chassis, which is aerodynamically designed to aid overtaking
– McLaren Electronics Systems provided the electric powertrain and electronics
– Williams Advanced Engineering, part of the Williams group (which includes the Williams F1 Team), supplied batteries
– Hewland supplied the paddle shift sequential gearbox
– Renault oversaw the systems integration
– Michelin specially designed 18″ all-weather tyres.

FORMULA E TESTS 2013

Specifications of the Spark-Renault SRT_01E:

Measurements
• Overall length: 5000mm (max)
• Overall width: 1800mm (max)
• Overall height: 1250mm (max)
• Track width: 1300mm (min)
• Ride Height: 75mm (max)
• Overall weight (inc driver): 888kg (min) // Batteries alone 320kg

Power
• Max power (limited): 200kw, equivalent to 270bhp
• Race mode (power-saving): 150kW, equivalent to 202.5bhp
• Fanboost: up to 180kW

Maximum power will be available during practice and qualifying sessions. During races, power-saving mode will apply with the ‘Push-to-Pass’ system temporarily allowing maximum power for a limited time.

The amount of energy that can be delivered to the MGU by the RESS is limited to 30kwh. This will be permanently monitored by the FIA.

Performance
• Acceleration: 0 – 100 km/h (0-62mph) in 3s – Estimated
• Maximum speed: 225 km/h (FIA limited) – Estimated

Final performance figures are still to be verified.

Engine
• MGU by McLaren
• Maximum of two MGU’s allowed
• MGU’s must be linked only to the rear axle
• The use of traction control is forbidden

Traction battery
• The traction battery is a Rechargeable Energy Storage System (RESS) and supplies electric energy to the Power Circuit and thus to the traction motor. Any onboard battery electrically connected to the Power Circuit is considered to be an integral part of the vehicle’s traction battery

RESS
A Rechargeable Energy Storage System (RESS) is a system that is designed to propel the car via the electric motor. In order to comply they must be:
– FIA Standard
– The maximum weight of the Battery Cells and/or Capacitor of the RESS must not be higher than 200kgs
– All Battery Cells must be certified to UN Transportation Standards as a minimum requirement

Chassis
• Chassis / Survival cell – Carbon/aluminium honeycomb structure made by Dallara
• Front and rear wing – Carbon structures and Aero styling by Dallara
• Bodywork – Carbon – Kevlar honeycomb structures made by Dallara

Gearbox
• Hewland paddle shift sequential gearbox
• Fixed gear ratios to reduce costs

Brakes
• Standard two separate Hydraulic systems, operated by the same pedal
• Brake material is free choice
• Calipers; the section of each caliper piston must be circular (and the body must be made from aluminium alloy)

Wheels & tyres
• Bespoke 18″ treaded Michelin tyres for use on both wet and dry conditions/surfaces
• Championship specific wheel dimensions
• O.Z. Racing Magnesium rims. Max width front – 260mm / rear 305mm. Max Diameter – front 650mm / rear 690mm

Electronics
• McLaren Electronics ECU/GCU including data logging system
• Power supply management unit
• CAN data acquisition pre-equipment
• FIA Marshalling system
• Beacon receiver
• Telemetry is not permitted

Suspension
• Double steel wishbones, pushrod operated, twin dampers and torsion bars suspension (front) and spring suspension (rear)
• Adjustable ride height, camber and toe
• Two way (front) / Four way (rear) adjustable Koni dampers
• Adjustable anti-roll bar (front/rear)

Steering system
• Non assisted rack and pinion steering system (power assistance is allowed)
• Steering wheel with dashboard, marshalling display, gear change and clutch paddles

Safety
• FIA safety standards including: front, side, rear and steering column impact tests
• Front and rear roll hoop, impact structures and monocoque push tests
• Anti-intrusion survival cell protection panels
• Wheel retainer safety cables
• Extinguisher system (electronically operated)

Camera equipment
• Roll hoop, nose cone and face shot camera pre-equipment

Source: Formula E regulations