2007 World Proxy Race  for Group C Sports

This race will be conducted during 2007 at tracks to be advised.

Introduction:

World Proxy Race Series for Group C and GTP racing cars

The introduction of the IMSA GTP series in 1981 and the FIA World Sports Prototype Racing Championship for Group C cars in 1982 saw some of the fastest racing cars ever produced. The popularity of the Group C series grew to the point that it was almost as popular as Formula One and the cars almost as fast.

The IMSA GTP reigned as North America's premier road racing series from 1981 through 1993, with first Lola and then March ruling the roost. The coming of the Porsche 962 in 1985 saw this car dominate until the arrival of Nissan, Toyota and Jaguar.

In Europe, Porsche was instantly dominant, first with the 956 and then with the 962. Mercedes, in the guise of Sauber, and the TWR run Jaguars set out to beat Porsche, until a new 3.5-liter class was introduced in 1991.

With the world recession of the early 90's, manufacturer-based racing came to an abrupt end. Sports prototype racing in Europe died in 1992, to be followed in America at the end of 1993. Today, these cars and races are remembered with great fondness by most motor racing enthusiasts around the world.

Wheels were generally:
Front 17" x 13"
Rear 17" x 15" / 18" x 15"

Tyres:
Front 25.5" x 12.5"
Rear 28.5" x 14.5"

Rules:

1         The body must be an accurate 1/32nd scale representation of any car that raced in the WSR championship and IMSA series from 1982 to 1993, although any colour scheme may be used.  Bodies must be either injection-moulded 'hard' plastic or resin or fibreglass.  Please check with the organisers if you wish to use a body made from other materials; however vacuum-formed bodies are not permitted.  Appendages such as on the real car (e.g. spoilers and diaplanes) may be Lexan or other lightweight material.

2         Body must be mounted securely but can float. If using pins the pins must have heads and not protrude more than 1.2mm outside the body.

3         All cars must carry 3 numbers on the car, one on each side and one on the front.

4         All bodies must contain interior tray of plastic or styrene a minimum 10 thou thick comprising a  three dimensional driver with head, shoulders, arms and a steering wheel.  (Vac formed windshields and interiors are permitted )

5         The body must fully enclose the chassis, running gear, guide and braid when viewed from above.  Maximum width is 2.5", however body width may exceed 2.5" if substantiated by credible evidence.

6         Maximum width measured from the outside edges of the wheels must not exceed 2.5", regardless of the dimensions of the real car.

7         Minimum ground clearance is 1/16".

8         Chassis may be of any design, inline, sidewinder, anglewinder or front mounted inline, and made from any material but no laser or EDM-cut components, other than guide tongue and axle pillow-blocks, may be used.  The chassis MUST BE SOMETHING THAT CAN BE BUILT IN THE HOME WORKSHOP.  Only one guide flag may be used.  Ball bearings are NOT permitted.  Conversions of productions chassis will be allowed.  The guide pivot shall be no more than 100 mm in front of the rear axle. Plastic chassied cars are allowed and should be right up with the scratchbuilt cars.

9         No traction magnets permitted.

10     The motor should not provide any added magnetic traction for the car.

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12     In the spirit of the real WSR Series  any motor can be used however cobalt magnets are not permitted. HMCC suggest narrow tyres will limit the power that can be put to the ground and the cars must be easy to drive for all drivers.The last few years indicate that  the Fox cars were right on the limit for power! Some of the new generation motors “s” type motors work well in the lighter cars.  The motor must be the same type for each track.  No changing to a hotter motor for the faster tracks.  The motor may be replaced at any time with another of same spec.

13     Wheels and tyres must be of correct scale in diameter, conforming to the real car.  Wheel width must match original specs of prototype, but in any case cannot exceed 12.70 mm (.500) measured between rim beads.  Wheels must contain hub inserts.  Minimum diameter inside hub 9.5mm and fitted with a suitable wheel insert.

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15     Tires - Minimum front tire diameter will be 18mm (.700) Minimum width of 8mm. Minimum rear tire diameter will be 19mm. Maximum tread width of 12.7mm.  All tires must be black. Piranas and other "fish" type sponge tyres work well on our tracks. As do Ortmans and NSR on the lower powered cars.

16     Gears 48 or 64 pitch gears may be used.

Race Procedure

All cars will be tech inspected upon arrival. All cars will be tested before qualifying and the race ( We will try to tune the cars for the track as much as we can without altering the chassis in anyway. If problems are found I will contact the owner and we will try to work out the problem.

Each race will be a minium of 12 minutes duration.  IE 4  x  3 minutes on a 4 lane track) The cars will be raced with  several cars on the track and anyone time ,no timed races using only one lane.