Group ND Proposal
Braking system must remain as original ie Drum-Drum, Disc-Drum or Disc-Disc
All brake components are free save that:
- Where disc calipers are used, there can be only 1 per wheel and they cannot be liquid cooled.
- Brake calipers must be of PERIOD external appearance and have no more than 4 pistons per caliper
- Brake drums must be ferrous but finned alloy cooling rings may be pressed onto them.
Note: The size of the disk or drum assembly that can be used will be limited by the rim size.
Justification and Rationale
In this PERIOD, braking systems became much more complex with the advent of dual circuit master cylinders, ABS and 4-wheel discs and this can make repair and/or modification complicated.
In some cases, an ABS system cannot be effectively modified for competition use and/or its control devices repaired.
Allowing this freedom improves safety by allowing competitors to choose the best system that will fit under the wheels
Retaining a period appearance for calipers will not adversely impact the overall look of the vehicle.