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Old 05-25-2015, 10:41 AM
Alcopa Alcopa is offline
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Join Date: Oct 2010
Location: Boise, Idaho
Posts: 1,845
Post 1970's Grand Prix Regulations

Gang-

As we hashed them out over the last few weeks, here are the Regulations. I have edited the 'base' regulations according to the 'Specifics' for the Class because they were confusing and, in many cases, 180 degrees to the later 'rules'. If you want to view the 'changes', please open the "Modern LMP Regulations' and compare.

1970’s Grand Prix Cars (Cosworth Era)

Based on cars that ran in World Championship Grands Prix from 1970 -1977 –

Baseline Regulations - Applies to all Groups and Sanctioned Events
Version 1.0 – January 2015


1. No Magnets are allowed

2. Weight may be added inside the chassis

3. Chassis /body may be sanded to allow for body float

4. Only one guide per car

5. Only hard bodies are allowed – plastic, fiberglass, resin or 3D. No Vac-formed bodies

6. Where prototype car has them- front and rear window glass are required

7. Prototypical wheels are required (molded plastic, inserts on machined aluminum wheels)
These wheels should be of scale size, width, height and design type. Inserts must be on cars at start of each race.

8. Rubber or urethane tires only, unless the rules call for a spec tire. (no silicones) All tires must be commercially available to all competitors. Tires may be trued and glued except in Classes requiring ‘hand out’ tires.



1970’s Grand Prix Cars are a MODIFIED CLASS:

- Ready to Run cars and Custom bodies on RTR Chassis.

Stock body and chassis that came with the body must be used. (Fly, Flyslot or Scalextric only)

All cars must run with ‘as-supplied’ stock components, including motors, axles, gearing, and wheels. This means no 'after-market' aluminium wheels. You can switch plastic wheels from any allowable 'stock' cars from Fly, Scaley or Flyslot or other makers plastic wheels.

Motor type must be Fly, Flyslot or Scaley ‘as supplied’ in their 1970’s F-1 cars

Guide may be changed but must retain stock position.


1970’s GP Specific Rules:

‘Stock’ bodies and ‘Stock’ chassis may switched Resin/plastic bodies may be used on ‘stock’ plastic or resin chassis (Fly, Flyslot, Scaley –resin repros allowed). Fully custom plastic or resin chassis, if of the same or greater weight than ‘stock’ may be used but must be approved prior to the race by the host.

Replacement tires (rubber or urethane only) may be used –but must be of prototypical size and shape.

Width of car at front and rear wheels must not exceed that of ‘stock’ offerings in the class. Measurements to be published soon…

Cars with front suspension and or steering my be replaced by a solid axle or stubs –but must retain stock plastic wheels. No set-screw wheel, axle or gears may be used.

Weight may be added to the underneath of the chassis, but must not be visible from above. Metallic weight surfaces must be protected by tape or plastic where contact with the track rail or tape is possible.

Cars must appear as prototype for each race. Wings, airbox, motor detail and other parts must be on the model at the start of each heat. If a car loses a part during the race, it may continue until repairs can be made at the end of the heat.


OK, Gents -- you still have a few weeks but you can get started on your favorites!!

Steve C.

Last edited by Alcopa; 06-11-2015 at 06:25 PM. Reason: Clarification of wheels -tires
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