Regulations


TECHNICAL REGULATIONS FOR THE PREPARATION OF SCOOTERS FOR USE IN SSOI EVENTS IN 2016

INTRODUCTION
This document outlines the requirements and specifications required in the preparation and construction of scooters for scootercross and scootermoto events.

GENERAL
For the purposes of these Regulations and any events for which they are applicable, scooters are divided into 2 categories.

— S1 & S2 Class
— S3 Class

The regulations detailed below are applicable to all scooters except where they specifically state for an individual class where they shall apply only to the appropriate class of scooter. The definition of a scooter is a two wheeled motor vehicle on which the rider may sit on a seat and have free and open space in front of the seat for passage of their legs.
FRAME & BODYWORK
S1 & S2 Class Scooters
— The frame must be constructed of good quality seamless drawn steel tube of a circular or non-circular section, welded together. If circular, the outside diameter shall not exceed 100mm, if non-circular, the maximum cross section shall not exceed 100mm measured at right angles to any flat face.
— All external fairings must be securely fixed in place.
— The tail light unit and headlight casings shall remain in their original position although glass must be removed.
— Any type of seat may be used provided it is padded and securely fitted to the original mounting points.
— No spoilers or material additions may be made to the bodywork
–Rear view mirrors must be removed.
— It must be possible for the scooter, not being loaded, to be inclined to an angle of 26º from the vertical without any part of it, other than the tyres, coming into contact with the ground.

S3 Class Scooters
— The frame must be constructed of good quality seamless drawn steel tube of a circular or non-circular section, welded together. If circular, the outside diameter shall not exceed 100mm, if non-circular, the maximum cross section shall not exceed 100mm measured at right angles to any flat face.
— The use of electrode metal arc welding is not recommended.
— The use of composite (i.e. skinned bonded honeycomb) or Monocoque construction is forbidden with the exception of those parts of the motor scooter which were so constructed as part of the manufacturer’s original specification.
— The use of TITANIUM and similar “exotic” metals is forbidden in the construction of the frame, front forks, handlebars, swinging arm and wheel spindles.
— The use of light alloys is forbidden for wheel spindles.
— Any type of seating may be used provided it is properly padded, securely fitted in place and no part of the seat is more than 900mm above the ground when the motor scooter is not loaded.
— Any form of bodywork may be used providing they are plastic or fibreglass in construction and provided the machine remains in a safe condition.
— Rear view mirrors are forbidden.
— There shall be as few sharp projections as possible. Where there are projections, they must be covered in such a way as to prevent injury, occasioned by accidental contact, to the driver. All tubular ends must be securely fitted with rounded ends.

ENGINE & DRIVETRAIN
The engine and drive unit must be a single assembly which is mounted and suspended from the frame, drive must be transmitted to the track surface through the rear wheel of the scooter. The unit shall be properly and safely finished with all necessary studs, nuts, bolts and washers securely fitted.

S1 Class Scooters — the maximum allowable displacement is 75ccm for 2 stroke engines and 150ccm for 4 stroke engines.
S2 Class Scooters — the maximum allowable displacement is 125ccm for 2 stroke engines and 250ccm for 4 stroke engines.
S3 Class Scooters — the maximum allowable displacement is unlimited.

FUEL
Fuel must be a commercial brand of petrol as supplied from a wayside pump. No additives other than lubricants are permitted. The use of power boosters and/or octane boosters is specifically prohibited.

EXHAUST SYSTEM
The exhaust systems must fulfil the noise control limit of 105Db at a distance of 3 metres. Exhaust fumes must not be discharged in a manner as to raise dust, foul the tyres or brakes or inconvenience any other driver. Where high level exhaust systems are used they must have an adequate heat shield fitted to prevent contact with the systems by the rider in normal driving position and also by the driver or others in the event of an accident. Exhaust ends must not extend past the rear wheel.

FUEL SYSTEM
All fuel tanks must be provided with a securely fitted filler cap fitted in such a way that it does not extend from the bodywork and cannot be torn off in an accident. A fuel feed tap must be fitted in an easily accessible position and be prominently marked to indicate the “OFF” position. Any fuel tank breather pipe must be fitted with a non-return valve. All fuel pipes must be adequately secured.

S1 & S2 Class scooters — fuel tank(s) must be soundly constructed, entirely of metal.​
S3 Class scooters — fuel tank(s) must be soundly constructed, entirely of metal.​

STEERING
Steering shall be through the front wheel only by means of non-adjustable handlebars securely fixed to the steering head of the motor scooter and having a MINIMUM overall width of 510 mm.

WHEELS & TYRES
All wheels and hubs must be of metal construction and the rim diameter must not exceed 407mm. Tyres must be of a commercially available type with a clearly definable tread pattern and be suitable for use on scooters, all tyres must have a minimum depth of tread of 1.6mm across the entire original tread area. Deep block pattern tyres may be used for ScooterX events only. The use of recut moulded tyres is prohibited.

SUSPENSION
S1 & S2 Class scooter — All suspension links, legs, yokes, swing arm or other similar component of the front and/or rear suspension assembly may be replaced with non-original components but must be mounted in a manner identical to that of the original component.
S3 Class scooter — All suspension must be constructed and operate in an adequate and safe manner, where a machine is deemed to present a danger to the rider or other participants it shall not be allowed onto the track.

BRAKES
The braking system must consist of two efficient brakes operated independently, one on each of the two road wheels.

ELECTRICAL SYSTEM
All vehicles must be fitted with an easily accessible ignition switch, mounted in the vicinity of the handlebar/headset and within a radius of 200mm of the centre line of the top of the fork stem. Switches must be of a positive locking type in both the on and off positions and when in the “OFF” position must not allow the engine to run. Batteries, if fitted, must be of the leak-proof type.

THROTTLE CONTROL
Throttle controls must be self-closing when not held by the hand.

CONTROL LEVERS
All handlebar levers must be ball ended, the ball to be at least 19mm in diameter and to be a permanently fixed integral part of the lever. Each control lever must be mounted on an independent pivot. Handlebar grips must be securely fixed to the ends of the handlebars.

 


 

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