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Formula One rules

Chassis must be one of the following: Tyco/Mattel 440x2, Life Like M, Micro Scalextric 1995-2017 (with braids), Tomy Racing Turbo, Tomy Super Racing Turbo (SRT), Tomy Mega-G, Mega-G+ or Tomy Super-G+. No part of the chassis may be cut, sanded, drilled or otherwise interfered with. All wear must be by natural means only. No components may be glued in place. No part of the car can exceed 34mm in width and 17mm from centreline to sides.

Bodies must be open-wheeled and constructed entirely of moulded plastics or cast resin. Lexan bodies are not permitted. Bodies may be lightened or ballasted, but ballast must be glued firmly in place.  Any method of body fitment is permitted. Devices designated as clips are not considered a chassis part and must not be glued to chassis, they can be glued to bodies.  Front wings can be re-enforced or removed. Rear wings must be intact at the start of the evening. No body should be permanently glued to a chassis or any of its components.

Motors: Motor magnets must be stock items and in stock location. Magnets must not be shimmed or glued in place. Magnets may be marked to indicate polarity. Armatures must be stock and therefore not be 'worked up' in any way (examples: commutator tied-off, windings or epoxied, windings removed, commutator cut or diamond-trued, solder on tabs beyond factory-applied).  Armatures with balance marks or material removed from rotors by any means are not permitted.  Armature timing may not be altered, except via legal devices fitted as part of chassis. Micro Scalextric must run with stock can motor with 'fly-wheel'. Tomy Turbo must run with standard 6 ohm red-wound Mabuchi motor. Super-G+ must run with standard 6 ohm Tomy armature. Mega-G+ must run with stock can motor which may be glued to the rear bulkhead.

Rolling-element bearings (ie with ball bearings) are not permitted.

Traction Magnets must be stock items in stock location. Absolutely no aftermarket magnets are permitted. Magnets must not be shimmed or glued in place. Magnets may be marked to indicate polarity and may be ‘flipped’.

Guide pin: Any make is permitted, one per car, but it must only have one protuberance The protuberance must have a consistent outside diameter (no blades). It is permitted to reduce width or length of the protuberance.

Electrics: Any make of pick-up shoe and spring is permitted. Micro Scalextric chassis must run with pick-up braids (any make). Shunts are not permitted. Parts may be reshaped but no material may be added or removed.  For chassis with barrel brush systems, any make of brush and brush spring is permitted in all chassis. Barrels must be stock and unaltered.  For chassis with endbell brush systems, all parts must be stock, and unmodified. VSR Standard Endbell may be used in SG+ due to scarcity of original parts. Endbell tabs may be reshaped but no material removed or added.

Axles, Hubs & Tyres: Any make of plastic front wheels and solid axle is permitted. No sharp edges will be permitted. Independent Front ends are not permitted.

Wheels may be built up with tape to aid tyre retention.  Rear axle cannot be pinned. Original Tomy axle retainer may be used on Turbo and Super-G+ chassis only. Any type of plastic rear wheels can be used, but must have no sharp edges. Tyres must be single compound and black or Hot Pink in colour. O-rings or 'thinnies' may be used as front tyres. All permitted tyre types may be re-shaped or reduced in diameter and width.

From January 2023, there are no restrictions on minimum tyre/wheel heights

Gears: Any make of plastic gear (crown or pinion) is permitted, but they may not be altered from their factory specification in any way other than as a result of the usual 'lapping in' procedures. Lightning or sanding/boring to improve fitment is expressly forbidden.  Any make of gear boss and axle spacers is permitted.  Pinions must have 7 teeth, crown gears must have 25 teeth. The Tomy Racing Turbo may use its stock 22 tooth crown gear. Tomy Mega-G+ must use stock rear axle, crown gear and gear boss.

F1 Classic Cup: The following chassis are eligible for F1 Classic Cup points: Tyco/Mattel 440x2, Life Like M, Micro Scalextric 1995-2017 (with braids)and Tomy Racing Turbo. Cars must adhere to all Formula One regulations.