Technical Regulations

General

• Drivers must use Grand Prix Legends version 1.2. The use of the DiscoFix patch is strongly encouraged.

• Championship races and most other league races will use bandwidth settings equivalent to 4 ahead and 2 behind. Drivers are required to download Bart Westra's BWpatch - place it in the GPL directory and make sure option 1 ("more cars patch") is applied.

• Modification of the GPL executable and data files is only permitted if the modification does not give a performance advantage to the driver compared to drivers using a copy of GPL without the modification. Modifications that have only cosmetic effects are permitted.

• Drivers are strongly discouraged from using traction or braking help as this severely compromises the car's performance and introduces a performance gap to unassisted cars which is both hazardous and not in keeping with UKGPL's aim of close racing.

Cars

• Unless otherwise stated, all UKGPL league races will use the standard 1967 cars as supplied as part of GPL.

• Changing the performance or handling characteristics of any car, other than by means of the car setup, is forbidden.

• Prohibited changes include, but are not limited to, the following:

  • changing an engine's power characteristics or weight
  • changing an engine's fuel consumption
  • changing which engine each car uses
  • changing a car's weight and weight distribution
  • changing a car's size
  • changing a car's basic suspension characteristics
  • changing the grip or temperature characteristics of the tyres

• The use of any add-on car choice in addition to the seven cars provided as standard is forbidden.

• A driver may change a car's setup parameters outside of the range of values permitted by GPL 1.2's built-in setup editor using one of the publicly available setup tools such as GPL Race Engineer.

Tracks

• Modifying the graphics of a track is permitted without restriction. This includes the creation of additional brake markers.

• Modification of the physical characteristics of the track is not permitted. Forbidden modifications include, but are not limited to, the following:

  • changing the layout of the track
  • changing any part of the track surface to alter its grip characteristics
  • removal or addition of trackside objects with which a car may come into contact
  • changing any parameters which may affect a car's performance and handling characteristics, for example track temperature or altitude

• Where an add-on track is being used, if there are multiple versions of a track with different physical layouts, the race moderator will state which version must be used.