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Flem
Regular


Location:
cambo
Registered:
May 2002
Suspension Modification Regulations Sun, 19 June 2005 00:48 Go to next message
i found this i have removed the company name just incase of copy right bull. Hope it is help full
This information has been extracted from the RTA Code of Practice for Light Vehicle Modifications. issued 1996.
ADR Regulations:
2.4.1. Precedence of ADR’s and manufacturers’
guidelines
It is important to note that the requirements of the ADRs and the original manufacturers’ modification guidelines take precedence over the Code of Practice. Persons modifying or certifying modifications to light vehicles must ensure that any relevant manufacturers’
recommendations are complied with and that no ADR compliance is invalidated, even as an unintended result of complying with the Code of Practice.
Vehicles built/manufactured between 1934 - 31/12/1960 are not covered by regulation.
Vehicles built after 1/1/1961 - to the introduction of ADR 13. ADR 13 was Introduced 1973 and was enforced until 9/1991.
Minimum Head Light Height: 600mm
Maximum Head Light Height: 1400mm
Note: measurements are taken from the ground to the bottom of the headlight.
Vehicles built 10/91 ➟
Minimum Head Light
Height: 500mm Maximum Head Light Height: 1200mm
Note: measurements are taken from the ground to the bottom of the headlight.
3.5.2 Certification of suspension modifications
Certification of suspension modifications shall be
treated as follows:
Minor modifications can be treated as owner certified.
These are modifications which do not affect the basic geometry or load carrying members of the suspension.
Examples are:
- additional or up rated anti roll bars;
- up rated shock absorbers and / or springs;
- altered vehicle ride height by no more than one third of the manufacturer’s suspension travel in
the direction of the ride height change; fitting of suspension assemblies which were options from
the original manufacturer for the particular make/ model.
Major modifications are to be certified by an engineering signatory. These are modifications to suspension components, systems or installations which affect the major load carrying components of the suspension and which were not options available from the original
manufacturer for the particular make / model.
Examples are:
- replacement of the original suspension (front or rear) with a system of a different design eg: from another model vehicle.
- changes to suspension components such as changing the front cross member to accommodate
an engine change; substantially altering the mass of the vehicle.
3.5.3 Australian Design Rules
While no ADR is involved directly with suspension systems, the following are examples of ADRs which may be affected indirectly by a suspension modification:
ADR7/- Brake hoses
ADR13/- Installation of lighting devices - eg: height
ADR14 - Rear vision mirrors - eg: attitude change
ADR31 - Brake systems - eg: partial failure
ADR43 - Vehicle configuration and dimensions
6.4 ‘Ground Clearance’. The ground clearance of a vehicle, measured from a horizontal road surface to any point on the underside of the vehicle except the tyres, wheels & wheel hubs must, under the condition of ‘Maximum Load Test Mass’ loading as specified in the relevant
braking rule, be not less than..
6.4.1 for any point in the width of the vehicle which is within one meter fore and aft of
any ‘Axle’, 100mm.ADR61- Vehicle marking (license plate heights)
61.6.1.1 Registration Plates. Provision shall be made for mounting a registration plate to be affixed to the rear of the vehicle so that no part of such plate will be more than 1300mm from the ground.
ADR62- Mechanical connections between vehicles
5.2.3.2 Vehicles fitted with a 50mm ‘Ball coupling’ Towbar, the height to centre of the ball
determined in the laden condition must be between 350-420mm.
3.5.4.11 Changes to ride height are limited to one third of the working travel of the
suspension from kerb mass height to metal to metal bump or rebound positions as
specified by the manufacturer
Such modifications must comply with the following:
- altered spring free lengths are acceptable providing the spring seat load is maintained at full
rebound and material stresses are not exceeded; the use of extended spring shackle plates is not
permitted.

3.5.4.11Such modifications must comply with the following (Cont):
- the suspension ride height of a coil spring shall not be lowered by cutting off a section of the spring coils. New coil springs with increased spring rate specifications to provide for the reduced travel of the suspension shall be fitted.
3.5.6 Rod testing
The completed vehicle must be evaluated under a range of road operating conditions to establish that ride, handling and steering characteristics are appropriate for the vehicle character and proposed type of operation. While some of these aspects are subjective, the vehicle must not behave in an unpredictable manner under any circumstances and its general behaviour must not be significantly different from the majority of vehicles available at the time of road test. The vehicle must be suitable for subsequent sale to persons of average driving ability.


[Updated on: Sun, 19 June 2005 00:50]

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Corona RT142
Forums Junkie


Location:
Campbelltown
Registered:
November 2003
Re: Suspension Modification Regulations Sun, 19 June 2005 00:51 Go to previous messageGo to next message
hmmmm interesting the question is what about cars like lamborghini's i reckon they';d be pushing it even for the 500mm they are pretty damn low.
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greenta22
Regular


Location:
Dandenong Ranges, VIC
Registered:
July 2004
Re: Suspension Modification Regulations Sun, 19 June 2005 01:21 Go to previous messageGo to next message
Thats exactly what I was thinking, but check this out...


http://forums.autoweek.com/servlet/JiveServlet/dow nload/31-14243-292586-6248/Lamborghini%20Countach. jpg

Check out where the pop up headlight its, I rekon that'd be about 500mm. But then, was the Countach ever made to comply with ADR? doubt it...
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Corona RT142
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Location:
Campbelltown
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November 2003
Re: Suspension Modification Regulations Sun, 19 June 2005 01:24 Go to previous messageGo to next message
yeah but the newer ones like diablo's and murcielago are even lower and later models don't have pop ups and the countach would have to have a minimum of 600mm pre 91 according to my understanding of reading the legislation
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Corona RT142
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Location:
Campbelltown
Registered:
November 2003
Re: Suspension Modification Regulations Sun, 19 June 2005 01:25 Go to previous messageGo to next message
greenta22 wrote on Sun, 19 June 2005 11:21

But then, was the Countach ever made to comply with ADR? doubt it...

Um i thought it'd have to if it was on australian roads
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HyDrA
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Location:
Adelaide, SA
Registered:
May 2002
 
Re: Suspension Modification Regulations Sun, 19 June 2005 01:57 Go to previous messageGo to next message
You're forgetting there are all sorts of ways to comply a car that doesn't meet the usual ADR rules, loopholes, etc.

Nothing is impossible to do, it's just not always easy.
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greenta22
Regular


Location:
Dandenong Ranges, VIC
Registered:
July 2004
Re: Suspension Modification Regulations Sun, 19 June 2005 02:29 Go to previous message
Regulation 24 of the Motor Vehicle Standards Regulations 1989 states

The Low Volume Scheme for new vehicles allows for the supply to the market of up to 25 or 100 vehicles per year per vehicle category. The Scheme provides a major concession in that it allows alternative forms of evidence to be submitted against some of the ADRs. In the main this applies to ADRs where destructive or expensive testing is required.


http://www.dotars.gov.au/transreg/str_lowvol.aspx

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