5. Vehicle Specifications
5A. Body/Chassis
5A1. Full harnesses (4 point) will be fitted for all occupants, the minimum being a four point full harness, and will comply at least with AS2596, E35, SFI16.1, FIA Standard 8853 or 8854, 8853/98 or 8854/98 or European Standard ECE R-16). The full harness must not be frayed, torn or damaged in any way.
In all cases of mounting, the following must be observed:-
Floor mounting points must be reinforced with a 3mm steel plate of at least 75mm x 50mm on the under side of the body.
Full harness rear mounting point or points must be to a substantial part of the vehicles structure, reinforced as may be appropriate or to the roll cage.
5A2. The chassis can be strengthened.
5A3. A recovery point (painted red) is required for both the front and rear of the vehicle and if mounted to the chassis a minimum of two 12mm, or four 10mm, grade 8 (or equivalent) high tensile bolts be used. Minimum recovery point is a rated lifting lug (1.4T) with a 19mm thread.
5A4. Items carried in the vehicle must be secured adequately while the vehicle is in motion.
(To be fully enforced by 2009)
5A5. Vehicles shall be fitted with a full "Internal or External Roll Cage" starting at the "A" pillar. Wagons to be a 6 point and utilities a 4 point with a recommendation that 2 forward braces from the main ("B" pillar) hoop to the floor be fitted on an internal roll cage. The roll over protection must be built to engineering standards using listed material and will be subject to inspection before vehicle is allowed to compete.
I) Roll cage structure must not obstruct front seat access nor encroach upon the area occupied by driver and co-driver.
II) Main hoop "B" pillar must be a maximum 150mm behind the driver and co drivers head. It is recommended that 2 diagonal braces in the plane of the main "B" pillar hoop be fitted. The "A" pillar & "B" pillar hoops and all other tube work to be placed as close as near possible to the roof in order to limit crushing in the event of a roll over. The forward tube work from main hoop "B" pillar to "A" pillar hoop should be placed adjacent to and horizontal with the door frame as close as possible to roof. It is recommended that 2 diagonal braces between the "A" & "B" hoops be fitted as close as near possible to roof in order to limit crushing in the event of a roll over.
III) The right and left hand tube work must be mounted in such a manner that it does not obscure the driver's vision past the "A" pillar and doorframe combined.
IV) Mountings will comprise an upper mounting plate attached to the roll cage and a lower mounting plate, sandwiching a section of the vehicles structure between them. The following requirements outline minimum sizes for mounting plates. Smaller width plates minimum 45mm wide may be used provided that the overall area is not reduced.
V) Mounting plates to be steel 100x100x 6mm for vehicles over 1150kg and 100x75x 6mm for vehicles under 1150kg. The lower mounting plates must be at least 100x45x 6mm. At least two 10mm Grade 8.8 high tensile bolts are required at each mounting point.
VI) Where roll cage mounting bolts pass through a hollow section of the vehicles structure, the section must be locally reinforced to prevent crushing.
VII) Tubing used in manufacture of hoops and bracing shall be round section cold drawn steel tube CDS, CDW or CEW.
Minimum sizes :
Main hoop "B" pillar 45mm dia. Wall 2.5mm.
Straight braces 45mm dia. Wall 2.5mm.
Bent braces "A" pillar 45mm dia. Wall 2.5mm.
VIII) Continuous lengths of tubing will be used for all braces and main hoops, with smooth continuous bends and no evidence of crimping, wall failure or significant section weakening. All welds will be full penetration butt welds. All other types of joins will be done to accepted engineering and competition standards.
IX) Upper section of the roll cage or bracing must be fully protected with high-density foam or equivalent, of at least 15mm thickness. Hollow cylindrical pipe insulation may be utilized for this purpose.
X) In open vehicles, the driver and co-driver profiles, including shoulders, must be within the main hoop viewed from the front of the vehicle. All open top vehicles will have a solid cover fitted over driver and co-driver head area of 3mm alloy or 1.6mm steel.
5A6. Doors with glass windows and/or window nets must be fitted to all vehicles. The window net must cover 70% of the window opening. The net shall be made of a non-flammable material with mesh size no greater than 50mm, fitted to the driver and co driver door or roll over protection structure above the driver and co driver window. It must be secured in such a way that it can be removed at any time from both inside and outside the vehicle with the door closed. Half doors are to be at least 150mm above the highest part of seat swab.
5A7. Wagons, dual cabs and open backed vehicles will have a metal cargo barrier fitted immediately behind driver and co-driver seats. Cargo barrier to be made of steel/alloy with a maximum opening of 50 x 50mm and be greater then, steel 2mm – alloy 3mm in thickness. Cargo barrier is to be secured in at least 4 places. Clamps to secure barrier are allowed, cable tires are not.
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