Last Update: 27th September 2009

2009 MARDAVE GP CONSTRUCTION RULES

 

  

CHASSIS AND COMPONENTS

  • Cars to be standard 1/12th scale Mardave V12 or Caterham series chassis and suspension.  The car chassis plate may be drilled to improve weight distribution providing no sharp edges are left. No composite chassis allowed
  • Ball races allowed on rear axle only. Rear axle and spur gear must remain as kit. Mardave Differentials will be allowed.
  • Car suspension and wheel carriers shall remain as kit.
  • 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

  • Any commercially available Mardave or Kamtec, 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

  • 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 providing it includes reverse. 
  • 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 and be listed on the BRCA electric board approved battery list. Battery mountings may be changed from the original.
  • Brushed Motors will be the Mardave G2 unit; these motors will be issued to competitors at the beginning of the meeting. Additional ‘control’ motors will be available during the meeting. No other motors are allowed for the GP. Under no circumstances are fan motors, re-buildable motors, fitting of external bearings or skimming of motor armatures allowed.
  • Brushless systems will only be Mardave G2BL systems and not the G2GT systems. Cars using this system will be entered in the brushless class, separate from the standard brushed class.
  • Plastic whip aerials are allowed. 

 

TYRES

  • 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.

 

GENERAL SETUP

  • 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.
  • 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 1kg (1000g)  

  • Commercially available comm drops may be applied to the motor armatures.