This thread will give you information regarding what model rocket motors you can purchase in each state of Australia. I will start a new post for each state.
 
Please note that you must also comply with your states laws and adhere to the Model Rocket Safety Code and follow the laws set down by CASA in addition to the motor laws.
 
This information is supplied as per each states laws and some states are for propellant weight and other states for total motor weight - Please read carefully if in doubt contact your local Dangerous Goods office.

VICTORIA -  Model rocket motors come under the classification of "general use fireworks" this allows persons to purchase and launch any model rocket motor with less than 62.5g of propellant. You do not need to be a member of a club to do this.
 
Any model rocket motor with more than 62.5g of propellant is available to certifed members of any rocketry club there are no pemits needed

 

NEW SOUTH WALES -  A model rocket propellant device is prohibited if it;
(a) contains a composition of a chlorate in admixture with sulfur, a sulfide or phosphorus, or
(b) is of such construction that ignitable substances can escape from it, or
(c) may explode either wholly or in part, or
(d) contains an ignitable substance or ignitable substances exceeding 15 grams in mass, or
(e) is used for the purpose other than that allowed for by a recognised model rocket club.

i) a model rocket propellant device containing an ignitable substance or ignitable substances not exceeding 62.5 grams in mass received by a person who is a member of a recognised model rocket club, or

ii) a model rocket propellant device containing an ignitable substance or ignitable substances exceeding 62.5 grams in mass received by a person who is a member of a recognised model rocket club and holds a pyrotechnicians licence endorsed for the use of such devices.
Australian Rocketry Association INC is a recognised model rocket club in NSW
New South Wales Rocketry Association is a recognised model rocket club in NSW.


Authorised Rocket motors are;
Estes model rocket motors not exceeding 25g propellant under class 1.4S Articles pyrotechnic
Quest model rocket motors not exceeding 25g propellant under class 1.4S Articles pyrotechnic
Estes model rocket motors  exceeding 25g but not 62.5g under class 1.4G Articles pyrotechnic
Composite Motors H - N under class 1.3C Cartridges Power Device Reloads up to 62.5g propellant under class 1.4C Articles, explosive, N.O.S

License required to purchase and launch model rocket motors above 62.5g propellant is at this link;
http://www.workcover.nsw.gov.a.....icians_FE04_0885.pdf

SOUTH AUSTRALIA - Currently the laws regarding model rocket motors is currently under revision and this post will be updated once the new laws are in place. If you would like to add submissions to the process please contact RocketballSA.

You must be a member of the Australian Rocketry Association INC  to purchase and fly rocket motors.

Currently the  Australian Rocketry Association INC have club permits that allow members to purchase and launch BP and AP motors in  South Australia including High Power motors

WESTERN AUSTRALIA -  The new changes came into effect as of the 1st May 2008


Any person may purchase, possess and use small rocket motors A,B and C motors <5g provided that they are adults or under adult supervision.
 
Any person can purchase, possess and use medium rocket motors D,E,F and G motors >5g and <62.5g provided they are current members of an approved rocketry club. If the member is under age and they are in the presence of a person who has authority to be in possession of medium model rocket motors.
 
Any person can purchase, possess and use large rocket motors H and I motors >62.5g <325.0g provided that they are members of an approved rocketry club and have a current PSUL or they are in the presence of a person who has authority to be in possession of large model rocket motors. This also requires permision/certification within the approved rocketry club.
 
Any member who wishes to purchase and possess rocket motors higher than > 325.0g may apply for additional permission from DMP (Department of Mines and Petroleum) with permision from the approved rocketry club President and/or Secretary. this will be approved on a case by case basis.

Currently there are no limits to what you can fly once approval from the club is given ie J ,K ,L ,M ,N  
 
Current link to the new Pyrotechnics Special Use License (PSUL);
http://www.dmp.wa.gov.au/documents/Forms/DG_F_PyrotechnicsSpecialUseLicence_Application.pdf

 
Current link to one of the WA approved rocketry clubs;
www.perthrocketclub.com

Queensland- Australian Rocketry Association INC  members who wish to fly High Power Rockets using over 62.5 grams in Queensland may do so you just need the appropriate licence and part of that licence is a medical check  

All motors below 62.5grams have no restrictions on them.


For more information please feel free to contact the Australian Rocketry Association INC

The best thing about the Australian Rocketry Association INC is you dont need to join a overseas club to fly High Power Rockets one simple cheap fee NOT two and your away    

ACT Australian Capital Territory

In the Australian Capital Territory, the use of model & hobby rocketry motors ("propulsion devices") is regulated through the Dangerous Substances Act 2004 and the Dangerous Substances (Explosives) Regulation 2004. These instruments make provision for model rocket motors, and define those to be "commercially manufactured devices designed for the propulsion of model rockets".

Throughout the ACT legistlation, model rocket motors are generally defined as containing less than 62.5 grams of propellant, and generating less than 80 Newtons of thrust force.  Note that while this definition is stated in terms of thrust (Newtons) and not total impulse (Newton-seconds), it would be fair to state that it covers the use of motors up to, and including 'F' types (40-80 Ns total impulse).

How high-power rocketry activties fit into the ACT legislative environment is unknown at the moment, however inquiries are being made and hopefully there will be a resolution


Currently ARA members may purchase up to size F and below with no permits

NORTHERN TERRITORY

Model rocket propellant devices each containing not more than 20 g of explosives.