Rule Book

The 2024 DLRA Rule Book has now been published.

The DLRA rule book contains the rules and regulations for entrants and their vehicles to compete at the DLRA Speed Week. It is strongly recommended that entrants read and understand the rules and regulations so that they may comply. Speed Week at Lake Gairdner is a long way to go, to find out you can't race.

The DLRA rule book was originally based upon the Southern California Timing Association rule book and annual SCTA revisions are reviewed by the DLRA Rules Committe before being added to the DLRA rule book. There are also many instances of rules and regulations that are particular to the DLRA Speed Week.

Note There is a recomendation for all cars that are capable of 175mph and higher to supply a weight chart when presenting for vehicle inspection, this is the weight over each wheel. This will be used to help entrants to present a well balanced and safer at speed vehicle. Optionally entrants can choose to determine their vehicles Centre of Gravity and Centre of Pressure. Please take the time to read this document which explains it all.- Race Car Engineering.

If you want a printed version, they are for sale ($25 plus $20 postage), please email or contact secretary@dlra.org.au.

SUMMARY OF RULE ADDITIONS & CHANGES

Below are the clauses that have been added or changed from the 2023 DLRA Rulebook.

1.U VOLUNTEERING
Lost or cancelled shift must be made up by entrant

3.U Windows and Windshields
Rear windscreens are now allowed to be made of a "shatter resistant" material provided it is an exact replica and does not change the general contour or profile of the vehicle.

5.A.3 ELECTRIC VEHICLE - /EV

5.A.3.1 ELECTRIC VEHICLE STREAMLINER - /EVS.
This class is for vehicles using electric power as the sole means of propulsion. The vehicle shall be wheel driven. THE BODY CONFIGURATION IS UNLIMITED PROVIDED THAT AT LEAST TWO (2) WHEELS SHALL BE COVERED. The vehicle and driver shall meet all technical and safety regulations based on the speed of the existing record. The class will be based on vehicle weight less driver. The entrant shall provide a current weight certificate for classification purposes.

Class I		Under 1099 lbs. Less than 500 kg
Class II		1100-2200 lbs. 500-1000 kg.
Class III		2201 lbs and over. Over 1000 kg

5.A.3.2 ELECTRIC VEHICLE LAKESTER - /EVL
This class is for vehicles using electric power as the sole means of propulsion. The vehicle shall be wheel driven. THE BODY CONFIGURATION IS UNLIMITED PROVIDED THAT NONE OF THE WHEELS ARE COVERED. There shall be no streamlining, fairing or covering of the wheels and tires. Tread width is optional so long as no part of the body or axle fairing is wider than the narrowest inner vertical plane of the tires. A wing may be mounted at least 12 inches above the top of the rear tires as measured from the lowest part of the wing. Front wings shall be no wider than the inner vertical plane of the narrowest set of tires. The vehicle and driver shall meet all technical and safety regulations based on the speed of the existing record. The class will be based on vehicle weight less driver. The entrant shall provide a current weight certificate for classification purposes. 5.A.3.1 ELECTRIC VEHICLE STREAMLINER - /EVS. This class is for vehicles using electric power as the sole means of propulsion. The vehicle shall be wheel driven. THE BODY CONFIGURATION IS UNLIMITED PROVIDED THAT AT LEAST TWO (2) WHEELS SHALL BE COVERED. The vehicle and driver shall meet all technical and safety regulations based on the speed of the existing record. The class will be based on vehicle weight less driver. The entrant shall provide a current weight certificate for classification purposes.

Class I		Under 1099 lbs. Less than 500 kg. Minimum wheelbase 80 inches.
Class II		1100-2200 lbs. 500-1000 kg. Minimum wheelbase 95 inches.
Class III		2201 lbs and over. Over 1000kg. Minimum wheelbase 110 inches

5.B.2.a American Iron Roadster
"D" engines are now allowed in the AIR class.

5.D.4 Modified Sports
"J" engines are now allowed in the Mod Sports class.

5.D.4.a Modified GT
Strakes ( 4.CC.9 ) are allowed in the MGT class

5.C Classic Category
You are now allowed to jump in and out of the Classic category.

7.F.11 OPEN CLASS - MODIFIED PRODUCTION - M
Motorcycles using non-OEM instruments, or OEM instruments not using OEM mounts, must be mounted within an area defined a no farther forward than six (6) inches in front of the leading edge of the upper triple clamp nor more than four (4) inches above the top of the upper triple clamp nor more than two (2) inches below the top of the upper triple clamp nor wider than one (1) inch outside of each fork tube unless these items are attached to or supported by bodywork that constitutes streamlining, and as such will not be allowed.

Amendments to DLRA Rule Book

24/10/2023	2024 DLRA Ruleboon Final version complete and available online (v1)
31/01/2023	2023 DLRA Rulebook final version complete and available online (v2.1)
13/01/2023	2023 DLRA Rulebook final version complete and available online (v2.0)
20/09/2022	2023 DLRA Rulebook final version complete and available online (v1.0)
16/08/2021	2022 DLRA Rulebook final version complete and available online (v1.0)
29/10/2020	2021 DLRA Rulebook final version complete and available online (v1.2)
07/08/2019	2020 DLRA Rulebook final version complete and available online (v2.2)
24/10/2018	2019 DLRA Rulebook final version complete and available online (v1)
10/09/2017	2018 DLRA Rulebook final version complete and available online (v1)
16/08/2016	2017 DLRA Rulebook final version complete and available online (v1)
19/11/2015	2016 DLRA Rulebook final version complete and available online (v1)
30/05/2014	2015 DLRA Rulebook final version complete and available online (v1)
12/12/2013	2014 DLRA Rulebook final version complete and available online (v1.1)
01/11/2013	2014 DLRA Rulebook final version complete and available online (v1)
26/08/2012	2013 DLRA Rulebook final version complete and available online (v1-2)
18/07/2012	2013 DLRA Rulebook final version complete and available online (v1-1)
23/05/2011	2012 DLRA Rulebook final version complete and available online
12/04/2011	2012 DLRA Rulebook available for download for the first time
12/04/2011	Add Appendix C - Rule Change Nomination Form
12/04/2011	Add Appendix B - Protest Form
10/03/2011	2012 DLRA Rulebook published for the first time

Previous Rulebooks

The DLRA rulebook went through a major upgrade during 2012. The new 2014 version contains some relatively minor updates. All previous un-dated versions of the rulebook are now superceeded and should not be used for vehicle design or compliance.

2024 DLRA Rulebook

2023 DLRA Rulebook

2022 DLRA Rulebook
2021 DLRA Rulebook
2020 DLRA Rulebook
2019 DLRA Rulebook
2018 DLRA Rulebook
2017 DLRA Rulebook
2016 DLRA Rulebook
2015 DLRA Rulebook
2014 DLRA Rulebook
2013 DLRA Rulebook
2012 DLRA Rulebook
2011 DLRA Rulebook (Car) , 2011 DLRA Rulebook (Motorcycle)
2010 DLRA Rulebook
2009 DLRA Rulebook
2006 DLRA Rulebook
2004 DLRA Rulebook