I had a mate with a tandem axle unsprung trailer and his trick when towing the trailer empty was to take the wheels off the front axle and to let the tyres down on the rear axle to 20psi.

It is a really good thing.....so when should I send you the money!

no suspension is a moot point - you can't register unsprung trailers anymore

here's the info on the ADRs you need to comply with when building a trailer

http://www.infrastructure.gov.au/roads/ ... _01_b.aspx

That answers that question then!

Simon, I couldn't find the text that prohibits unsprung trailers. Can you help me out with a reference to a section number.

I am not a fan of unsprung trailers but do know someone actively constructing, registering and selling these and he was an author of the Code of Practice for Light Vehicle Modifications so I would expect he's familiar with the rules. He could just be out of date though. Your assistance would be appreciated as I've been trying to convince him to add rubber suspension and pivot bearings to the trailing arms used to raise/lower the deck.

M

Sorry, was really referring to the original post, as in wouldn't a winch help that one work better?

I don't think its so much no suspension as it is that multiple axle trailers need to be able to load share the axles. (section 19 from other link)

I know I had a pic of mine here before but cant find it. I had mine custom built by austrailers at Campbelltown a few years ago. Its light and easy to move around, the wheels rest against the front rail and the lowered section allows sump clearance, the doors clear the guards so you can drive on and off very easily. I would go the tilt option now but the ramps are easy enough. I also have steel belts which go over the tyres with nuts welded under the floor so they can be bolted stratight on and allow the cars suspension to move around, also has two tie down points at the front of the a frame so there is enough room to use ratchet straps and tighten them if needed and a safety chain point on each corner.

Something to remember for those people that have not used trailers very often is that it is very important that the car is sitting in the right spot on the trailer. If it is too far forward or too far back it can cause problems. Don't just park it against the front of the trailer and assume it is in the best spot.
You need some weight on the draw bar but not too much.
If the trailer sways it is because the car is too far back on the trailer.
If the front wheels on the tow car are locking up easily you have too much weight on the front of the trailer.

Also, don't rely on the front of the trailer to stop the car from moving forwards. The car will just roll over it in a crash.
You need to secure the car on all directions.

Very good tips there Morris, I have one to add.
My last boss is a firefighter, he said the worst trailer accident aren't when the load falls of the back, it's when the load isn't held back properly on the trailer and the tow car hits something causing the load to enter the back of the car.


That's why my mini is held back with chains and forward with truck straps.

_________________
Dean Hutton's first car was a Mini.

Very nice! Would you mind sharing the approx cost?

I paid about $2500.00 5 years ago but that included the 3 new alloys rims and brand new light truck tyres as most come with second hand stockies.

_________________
You're so square
Baby I don't care

as seen before this is mine



Tandem axle , rocker springs ( 3 tonne springs too big in hindsight), hydraulic Front disks , tows like absolute dream ...



i chose to have ramps as its just simple , and when i eventually get a winch i will be able to load the car by myself ( ever tried pushing a dead car onto a tilt trailer ? mind you Wobbles55 does have a very nice tilt one ...

i will post photos latter on how its tied on ... over the front wheels and locked down to the tray ..

Beanie

_________________
I am the son of the STIG

HOTBRICKS
http://hotbricks.org.au/

'65 NCF MINI.....
'69 MINIMATIC.... 9 year resto still on the go

Another thing worth considering is some type of stone guard on the front of your trailer, especially if the car is going to be towed regularly over considerable distances, such as to interstate race meetings.

Unfortunately I don't have shot of the trailer with the Brick on it, but this is sort of my rear-wheel-drive Mini.


Why does it aways rain at Calder !!

The trailer is a home-built, dual purpose tilt trailer with full floor (timber and fibreglass), removable box trailer sides with hinged (and removable) front and rear panels. The guards also slide on and off. Electric brakes and light truck tyres on Hilux rims. Wheel chocks, stone guard and short ramps all use the same slip-in fittings as the removable sides and tailgates.

_________________
Curly
'64 Cooper 'S' (Group Nb spec)
'67 Mini Marcos GT www.mm7056.wordpress.com