Maximum length: 2500mm Maximum Width: 1500mm Maximum Track-width: 1200mm Minimum Wheelbase: 1300mm Maximum Weight (without driver): 80Kg
2.1 The Organising Body will make a decision in any case not covered by these specifications.
2.2 If changes are made to these specifications, the organising body will attempt to notify all teams who have entered the event via their e-mail contact and such changes will be published on the website and on Facebook.
3.1 No vehicle will be allowed to practice or start on the track until it has passed scrutineering.
3.2 Vehicles must maintain compliance with specifications throughout the event.
3.3 The organising body and/or their representative reserve the right to stop and inspect any vehicle during an Event.
3.4 Vehicles may be required for inspection at the conclusion of an Event.
3.5 Drivers and constructors are reminded that they have a particular responsibility and duty of care to their Construction. During construction and use of the vehicle, the Team driver(s) must monitor that - (A) Driver protection structures are able to fulfil their purpose. (B) The vehicle is adjusted so they can effectively and safely operate it (particularly if there are two different size drivers sharing a cart).
3.6 Vehicle bodywork must have room on the exterior right side for attaching a stick-on Vehicle Identification Number Panels (supplied by Event Gravfest '16 Organisers)
Designers and constructors please note:
4.1 Each team is responsible for their own vehicle. This includes compliance with these Specifications and general safety at all times.
4.2 All vehicles are ridden at the driver's own risk.
4.3 The purpose of the scrutineering process is to determine if the vehicle complies with the 2016 Macclesfield Gravity Festival Vehicle Design & Construction Specifications.
4.4 No warranty whether expressed or implied is made in relation to safety or roadworthiness through the Scrutineering process.
4.5 Constructors using composite materials must comply with Safe Work requirements particularly as related to unbound fibres and complete curing of materials. Such materials must be of suitably rigid design and construction to meet Event requirements.
4.6 The vehicle design must provide substantial protection for riders in the event of a collision or rollover.
4.7 The design must be free of protrusions or other features capable of causing interference or injury to the rider or any person
4.8 Liquid lead acid type batteries are not to be used.
4.9 All batteries must be mounted securely so that they do not come loose and are safe from collision damage including shorting out.
4.10 Opening body sections must be able to be opened independently from the inside by the rider, and, from the outside without rider help.
4.11 Unless they are visually obvious, the location of closure devices for opening body sections must be marked outside with a triangle making it clear for anyone unfamiliar with the vehicle.
4.12 No rigid edge of the vehicle body or frame is to be horizontally within 300 mm of the rider’s face e.g. the edge of a wraparound cockpit opening. Please note: corflute, P.E.T.G. and similar materials are deemed to be rigid materials in this circumstance.
4.13 All vehicles must have enough headroom for riders to be able to turn their helmeted head 90°right, through to 90°left.
5.1 Must be recumbent feet first, all Drivers eye level must be at least 600mm from the road.
5.2 All drivers must wear motorcycle safety helmets, robust clothing (padded motorcycle jackets & trousers or heavy overalls, jeans etc), gloves and robust footwear.
5.3 Drivers are not allowed to carry extra ballast such as lead weight belts or pockets full of rocks!
5.4 All drivers must qualify to race by completing one run down the track to demonstrate control of the vehicle and prove the braking a steering systems.
6.1 The vehicle is not permitted a motor or any mechanical assistance. Use of any mechanical propulsion, magnets or any type of chain or gravity motor will be considered as cheating
7.1 Designers and constructors are permitted to freely use any bicycle systems, brake systems, wheels, hubs and other components.
7.2 The use of Go-Kart frames or motorbike frames is permitted but only if they do not exceed weight limits.
7.3 The use of bicycle frames is permitted.
7.4 If there is any uncertainty relating to commercial components, clarification should be sought from the organising body via the website.
7.5 Use of front forks for rear wheels is not advisable without extra support - see 7.7 below.
7.6 Front forks can be used at the front but in a vertical or no more than 15 degree of rake.
7.7 Use of rear bicycle frames/forks is permitted at the rear of the Vehicle as it better resists twisting forces when cornering.
8.1 Vehicles must have a minimum of four load bearing wheels.
8.2 Maximum length of the vehicle must be 2500mm
8.3 Track width (distance between wheels on same axle) must be between 750mm and 1200mm
8.4 The minimum wheelbase (distance between front and rear axle) must be 1300mm
8.5 Wheels must be within minimum diameter 200mm (8”), maximum diameter 700mm (27”)
9.1 All moving or dangerous parts must be guarded to ensure that no part of the rider or clothing can make contact or become entangled.
9.2 Where a rider’s hands can come into contact with spokes or tyres, guarding must be provided.
10.1 Vehicles must incorporate substantial forward protection for the rider, to cope with the event of a collision.
10.2 Such protection must be integral to the design, and strongly braced for feet protection.
10.3 Frontal vehicle design must also prevent easy penetration of another vehicle.
Rider Rollover Protection Structures must comply with the following
11.1 Be structurally integrated with the chassis/frame/monocoque shell.
11.2 Must be capable of providing reasonable protection to the driver in the event of the cart being inverted at speed.
11.3 Constructed from min 25mm square or round tube.
11.4 Be a minimum of 50mm above the driver's head when seated in the normal position.
11.5 Braced to the front or rear within 150mm of the top point.
12.1 The vehicle must be fitted with an seatbelt to prevent the driver being thrown from the vehicle in a roll-over
12.2 Automotive full harness types are acceptable - we strongly recommend a four point harness
12.3 Lap belts are permissible
12.4 Belts must be in good condition (frayed, cut or restitched belts will not be accepted)
12.5 Rope, Tie Down or other Straps are not acceptable
13.1 The vehicle must turn within a handling course at scrutineering (left and right).
13.2 The design of the steering must be such that the wheels can be moved from full left lock to full right lock in an uninterrupted movement.
13.3 Steering systems must have some form of maximum lock limitation to prevent jamming, linkage damage, over centre travel and tyre or wheel contact with the rider or any other part of the vehicle.
13.4 Steering controls must be designed and constructed so that they will not injure the driver in the event of an accident.
13.5 Steering columns which project towards the rider’s face must not be closer than 300 mm to the driver’s face.
13.6 Rope/cable systems are not permitted.
14.1 Rear Brakes Only
14.2 On tyre Brakes are permitted
14.3 Disk Brakes are permitted
14.4 Drum Brakes are permitted
14.5 Bicycle Rim Brakes are permitted
14.6 Front brakes are not permitted
14.7 Drag brakes are not permitted
14.8 The type of the braking system is left open to the designers and constructors.
15.1 Each braking system must be efficient and effective in all conditions and not interfere with directional control of the vehicle when operated.
15.2 Allowance must be made for brake wear, as brakes must continue to work effectively for the duration of the event.
15.3 Brake controls must be away from any moving parts and the road surface, to avoid injury to the driver or compromising the braking system of the vehicle.
15.4 Brakes must be powerful enough to stop the cart and hold an ‘equivalent pull’ - 35kg cart resisting a 35kg pull on a spring balance, 50kg resist 50kg and so on.
16.1 Drivers must be able to open and remove the canopy or bodywork and exit the vehicle without any external assistance.
16.2 Driver vision must not be impaired by excessively enclosed and restricting bodywork.
16.3 Drivers seated in the normal riding position must be able to sight an object on the road surface 5 metres straight ahead of the vehicle
17.1 Teams are invited to display on their vehicles and uniforms any logos or signs that promote school/institution, industry and community links etc.
17.2 The organising body reserves the right to remove any offensive signage.
17.3 The organising body may reject any Team or vehicle names deemed to be offensive.
17.4 Signs, logos, stickers etc promoting or representing drug, alcohol, cigarettes or illegal substances or practices are forbidden.