Article 5
SCHEDULE 1LIST OF TECHNICAL CHARACTERISTICS DEFINING CLASS
Reference mass.
Internal characteristics of the engine affecting its power-speed curve (eg compression ratio, valve characteristics).
Type of fan and its method of drive (eg electrical, mechanical).
Type of aspiration (eg natural, turbocharged, supercharged).
Fuel feed system (eg number of carburettors, types of carburettors, injection system).
Ignition characteristics (eg diesel, conventional spark ignition, electronic spark ignition, ignition timing, distributor advance curve).
Type of transmission (eg manual, automatic, 4 × 4, front or rear wheel drive).
Number of gears (eg 4, 4 with overdrive, 4 with range change, 5).
Final drive ratio.
Speed of car for each gear ratio (including overdrive) at an engine speed of 1000 rpm.
Type of bodywork, including any aerodynamic aids (eg saloon, coupé, estate, hatchback, sports, with or without spoilers).
Type of tyre (eg normal/low resistance).
Devices and equipment whose object is to influence fuel economy (eg engine stop devices, automatic freewheels, cylinder cut out devices).
NB. The examples given of various technical characteristics are not intended to be exhaustive.