DLRA

 

Rule Book

The 2023 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 ($20 plus $15 postage), please email or call Carol at secretary@dlra.org.au or 03 5472 4629

 

SUMMARY OF RULE ADDITIONS & CHANGES

Below are the clauses that have been added or changed from the 2022 DLRA Rulebook.

2.A.1 VINTAGE ENGINES: Restriction of supercharging devices.
3.A.2 Driver’s Helmet: Updated for current specifications.
3.B.1 Roll Cage: New diagrams to better explain requirements, refined specifications for tube sizes.
3.O FLYWHEELS, FLYWHEEL SHIELDS and BELLHOUSINGS: No cast flywheels.
3.S DRIVE LINES: Provision of a metal sling.
4.EE STEP PAN: Clarification of construction.
4.N.1 ENGINE SWAP: Use of non-production cylinder heads.
5.B.2.a AMERICAN IRON ROADSTER: Definition of distributor.
5.B.5 Vintage Oval Track /VOT: No power adders.
5.C CLASSIC CATEGORY: Remove the requirement to stay in the same class.
5.D MODIFIED CATEGORY: Permitted removal of trim.
5.D.1.a Competition Coupe & Sedan: Refinement to seating arrangement. No filling gap between hood and cowl.
5.D.1.b Competition Ute: No filling gap between hood and cowl.
5.D.2.a Altered Coupe: No filling gap between hood and cowl. Drip rails may be removed or filled.
5.D.2.b Altered Ute: No filling gap between hood and cowl. Drip rails may be removed or filled.
5.D.3.a Gas Coupe: No filling gap between hood and cowl.
5.D.3.b Gas Ute: No filling gap between hood and cowl.
5.A.3 Electric Vehicle - /E: Changes to regulations.
5.D.1.c COMPETITION PICKUP: Refined definition of body description.
5.D.5 Modified Pickup Truck: Rear bumper may be removed.
5.E.5 Modified Pickup Truck: Rear bumper may be removed.
5.E PRODUCTION CATEGORY: Permitted removal of trim.
Section 6 DLRA CAR Records: Updated.
7.B.2.2 IGNITION KILL SWITCH LANYARD: Inclusion of sidecar streamliners.
7.B.22 Chain Guard: Now includes, Countershaft drive sprockets shall have side protection.
7.B.27 SUPERCHARGED: Now includes turbo-compounding.
7.C.1 Rider’s Helmet: Updated for current specifications.
7.D.3 Engine Displacement Classes:  Now includes formula for reciprocating engines.
7.D.4 Frame Class: Addition of Ω (Omega) engine class to all frame classes.
7.J.10 Class Vintage Gas / Fuel: Remove reference to over-boring.
7.G SPECIAL CONSTRUCTION: Definition updated.
SECTION 8 DLRA MOTORCYCLE RECORDS: Updated.
APPENDIX A VEHICLE DATA CODES: Some codes updated to align with SCTA codes.

 

 

Amendments to DLRA Rule Book

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.

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

 

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