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Braking system for an RL28 trailer
Hi Guys.

I am trying to work out what to do about the braking system on my RL28 trailer.

I know legally we are required to have brakes on all 4 wheels, however I have heard from a couple of RL28 owners who have replaced their brake system with the simple mechanical overide brake system on one axle. Not quite legal but apparnetly it works well.

We went through the excercise today with my local trailer guy and we have come up with some revised figures from the previous quote from another trailer place.

The cost's now, ball park figures mind you, are:-

Replace existing Vacuum/Hydrolic braking system on all 4 wheels with Electric/Hydrolic brakes: $4,500.

Change current brake system to a hydrolic overide brake system on 1 axle only: $1,000

Change current braking system to a mechanical overide disc brake on 1 axle: $800

Change entire setup to a tri axle with mechanical overide brakes on 1 axle: $1,200. (This is what I am leaning towards)

Change entire setup to a tri axle with electric/hydrolic braking system on all 3 axles: $5,500. (This is what I would prefer!!)

Any comments or suggestions??

Garry
Garry Beattie27-Nov-2006    Edit    Delete 
Re: Braking system for an RL28 trailer
I am going through the same dilema, though I suspect my situation is slightly different.
My RL28 only needs to be towed 1km by a local tractor service on flat terrrain.
Neverless I am concious of my legal obligations.
I am considering an electric system, but have been advised this system is subject to salt water damage.
Although not a great help, the standard to be met is Vehicle Standards Bulletin VSB1 Building Small Trailers published by the Federal Government downloadable free.
Please keep me in the loop of your decision, especially costs.
Regards
Malcolm
Malcolm Moir29-Nov-2006    Edit    Delete 
Re: Braking system for an RL28 trailer
Hi Malcolm.
It sounds like we are both in the same situation. My boat usually stays in the storage yard at our sailing club and travels a total of about 300m for launch and retrieve.
In most cases the brakes are not an issue.
It is when I want to bring it home (20kms)maybe twice per year, or perhaps tow it down to Hervey Bay (100kms)maybe once per year, that the brakes become an issue.
I know that the single braked tri axle set up, with a mechanical override hydrolic brake will not be legal, but will be effective.
The tri axle should help better with load distribution making the brakes a little more effective should they need to be applied in a hurry. I think that is the way I will be going.
Garry Beattie30-Nov-2006    Edit    Delete 
Re: Braking system for an RL28 trailer
As I understand the Qld regulations, if the overall weight of the loaded trailer is over 2 tonnes, then it gets expensive, requiring electric or vacuum assistance and a breakaway safety device to activate the brakes if the trailer separates from the towing vhicle. Under that figure, the over-ride system is OK (I think). You may even crib a bit, as it could be 2 tonnes on the weighbridge and up to a further 10% on the vehicle towbar. In this era of "self assessment" you can basically do what you like (so long as it looks OK) until there is an accident and then it hits the fan.
Qld Transport are as useful as a chocolate teapot (as are most Qld Govt Depts at the moment) when it comes to getting information.
Talk to someone who issues trailer roadworthy certificates (and maybe get a second opinion) as to what is the minimum legal standard.

Cheers

Mike1-Dec-2006    Edit    Delete 
Re: Braking system for an RL28 trailer
The bit I really meant to add is the fact that from 750 kg to 2 tonnes you require brakes on one axle only. No doubt every State has a different law on this.

Cheers
Mike1-Dec-2006    Edit    Delete 
Re: Braking system for an RL28 trailer
Back on page 33 of the discussion forum, under the heading 'Trailers, any particular brands that work well' Greg writes interesting details about the Australian Deign Rules under the heading 'new trailer capacities'
Also look at page 7 under 'RL28 Actual Weight' which suggests that around 3 tonnes is a more realistic weight.
Michael1-Dec-2006    Edit    Delete 
Re: Braking system for an RL28 trailer
Our RL28 Rings-n-things weighs 3.3tonnes on the trailer.
South Aus. regulations conform to the National regulations which all states either have or are moving towards.
My advice would be not to tow in S.A., N.S.W. or Victoria without having the correct load rated wheels, tyres and axles with brakeaway brakes on all axles.
In S.A. boat trailers are being stopped and inspected and if found not to conform defected which means it can not be towed.
Our trailer used to have vacuum over hydraulic and I found that the life of the Holden Commodore calipers was only about 18 months before they would sieze up and have to be rebuilt. This happened even though I always wash them with fresh water.
Because we are planning to take Rings up to the Myall Lakes and the Hawkesbury next year good brakes are essential.
The hydraulic calipers haveing proved to have a short service life before needing to be rebuilt I decided to change over to vacuum-mechanical. I replacement discs and calipers are all galvanised with the springs and pins all stainless steel. The four calipers are actuated with two large PBR vacuum actuators and two vacuum tanks.
This system has given us better brakes and should be less likely to be to be effected by salt water.
Regards
Kay & kingsley
Rings-n-things

kingsley white1-Dec-2006    Edit    Delete 
Re: Braking system for an RL28 trailer
Our RL28 Rings-n-things weighs 3.3tonnes on the trailer.
South Aus. regulations conform to the National regulations which all states either have or are moving towards.
My advice would be not to tow in S.A., N.S.W. or Victoria without having the correct load rated wheels, tyres and axles with brakeaway brakes on all axles.
In S.A. boat trailers are being stopped and inspected and if found not to conform defected which means it can not be towed.
Our trailer used to have vacuum over hydraulic and I found that the life of the Holden Commodore calipers was only about 18 months before they would sieze up and have to be rebuilt. This happened even though I always wash them with fresh water.
Because we are planning to take Rings up to the Myall Lakes and the Hawkesbury next year good brakes are essential.
The hydraulic calipers haveing proved to have a short service life before needing to be rebuilt I decided to change over to vacuum-mechanical. I replacement discs and calipers are all galvanised with the springs and pins all stainless steel. The four calipers are actuated with two large PBR vacuum actuators and two vacuum tanks.
This system has given us better brakes and should be less likely to be to be effected by salt water.
Regards
Kay & kingsley
Rings-n-things

kingsley white1-Dec-2006    Edit    Delete 
Re: Braking system for an RL28 trailer
Thanks for all the discussion, where I was alerted to past discussions on the topic.

The RL28 spec. on this site give a hull weight of 1.38 tonnes.

I am going to see if I can register my trailer just under the 2 tonne limit with override brakes, and move it with water tanks empty, anchor, outboard and all heavy items on the towing or other vehicle.

I would not hesitate to go for a more sophisticated system if I was travelling significant kilometres over variable terrain.

Regards

Malcolm

Given my situation towing to and fro 1 km a couple of times a year
Malcolm Moir3-Dec-2006    Edit    Delete 
Re: Braking system for an RL28 trailer
Re; life of brake components
Galvanised brake calipers should last a lot longer than 18 months.
One trick is to spray all components with lanoline after each dunking (after washing the salt off)
Even the discs; the only proviso being to use the brakes enough over the first hundred metres to burn off the lanoline.

Cheers
Mike11-Dec-2006    Edit    Delete 

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