GT12 CONSTRUCTION RULES

CHASSIS AND COMPONENTS – All Classes

  • Cars to be 1/12th scale Mardave V12 or Caterham or Shumacher Supastox series chassis and suspension (Carbon Chassis versions are allowed).
  • Ball races allowed on rear axle and front wheels.
  • Car suspension and wheel carriers shall remain as supplied by Manufacturer.
  • Differentials may be used.
  • The use of countersink screws on the underside of the chassis is recommended but not mandatory.
  • Chassis top mounting may be changed, altered or removed.
  • The motor may be fitted to either side of the chassis, providing that there is no modification or alteration to the chassis or mounting blocks.
  • No external bumpers are permitted, although internal foam bumpers are recommended on the front.

BODYSHELL– All Classes

  • Any commercially available ABS or Lexan body shells may be used.  The shell must remain securely fixed to the car throughout the race.  Windows may be cut out on ABS shells.
  • No supplementary aerofoils or fins shall be fitted to the body with the exception of a rear wing if desirable.  This wing must be non metallic, commercially available and securely fixed.
  • The bodyshell can be decorated to suit the individuals taste providing all coatings are of a permanent nature.

ELECTRICS– Brushed Class

  • Any make of servo, servo saver or track rod ends may be used on the cars steering system.
  • Any type, make and capacity of speed controller may be used. 
  • Cars to use four cells only, cells to be sub-C sized cells only, with a nominal voltage of 1.2 volts per cell, cells to be Nicad and Ni mah’s. No LIPO’s to be used. Battery mountings may be changed from the original.
  • Brushed Motors will be the Mardave G2 unit. This is the only motor used for RVRCCC “Brushed Class”.
  • Plastic whip aerials are allowed.

ELECTRICS– Brushless Class

  • Any make of servo, servo saver or track rod ends may be used on the cars steering system.
  • Any type, make and capacity of speed controller may be used but must run in “BLINKY mode”. 
  • Batteries will normally be 1s Lipo unless authorised otherwise by committee.
  • Any 13.5 Brushless motor approved by BRCA.
  • Plastic whip aerials are allowed.

TYRES– All Classes

  • The tyres may be changed from the original kit tyres.Tyres to be Min 20mm Max 26mm width and have a Max 60mm diameter. No minimum diameter for tyres, but the tyre must cover the wheel. Any foam tyre compound allowed.
  • Tyre additive may be used providing it is non toxic, odourless and any excess is removed from the surface of the tyres and tyres to be ‘Touch Dry’ prior to the start of the race.

GENERAL SETUP– All Classes

  • Varying types of springs and methods of limiting suspension travel may be used. 
  • Minimum car ride height will be no lower than 3mm, 1mm at the spur gear.
  • Minimum car weight is 950 grams
  • Commercially available comm drops may be applied to the motor armatures.