Specifications

Article 63: Clutch and Transmission

• Vehicles with internal combustion engines must be equipped with a clutch

system, so that during inspection and fuelling operations the vehicle

remains stationary with the engine running.

All Clutch systems used prior to 2011 must be reviewed with respect

to whether the clutch system remains not engaged at engine start up.

(This means: The vehicle wheels must NOT turn when the engine is

started with brakes not applied)

• The starter motor speed must always be below the engagement speed

of the clutch.

• The installation of an effective transmission chain or belt guard(s) is

mandatory.

This is required to protect driver or technician when working on the

car in the event of the chain or belt breaking. It must be made of

metal or composite material rigid enough to withstand a break.

Article 64: Exhaust System

• The exhaust gases must be evacuated outside the vehicle body.

• Exhaust pipes must not extend beyond the rear of the vehicle body.

• All vehicles are expected to comply with reasonable environmental

standards, e.g. amount of smoke and odour emitted.

Article 65: Sound Level

The sound level for an UrbanConcept vehicle must not exceed 90dB when

measured 4 metres away from the vehicle.

Maximum sound levels will be measured and recorded at the pit stop

locations during a race and teams exceeding the permissible level will

be notified with a request for correction within a reasonable

timeframe.

Article 66: Emergency Shut-down mechanism

An emergency shutdown mechanism, accessible from the exterior, must be

installed on all vehicles. A red arrow at least 10cm long and 3cm wide at the

widest point must be positioned on the vehicle body to indicate clearly the

position of this emergency shutdown mechanism from the exterior. This system

must stop the engine and isolate the battery.

Article 67: Additional Inspections

• After passing the technical inspection, the replacement and / or alteration of

engine or vehicle part must be re-approved by the Technical Inspectors.

• After any significant incident on the track the vehicle will be subject to a re-

inspection as well

• At any time, the Organisers may perform unannounced inspections on the

vehicles.

Shell Eco-marathon ® Official Rules 2011 – Chapter 1