Thread: Ex army Mack 6x6 trucks.

Originally Posted by DeeJay

Graysonline are reselling one as it looks as though it couldn't be registered here.

Ex Military 6 x 6 Tip Truck - Unreserved

It seems that they are overweight over the front axle in Victoria in spite of the NSW Brownslip. While it may be on Graysoline, it is not being re-sold by AFM but by a private vendor, it is more like the same vehicle coming through eBay or Carsales.com any number of times.

Originally Posted by Summiitt

From what I can gather, they are running a 285hp Mack diesel, with a 6 speed crash box with selectable 6wd....very low horsepower but would probably climb a tree!

You are absolutely correct, as I once watched one attempt to drive over Dragon's Teeth (large concrete triangles designed to stop Tanks).
It got the whole front axle in the air before it beached itself.

Legal front axle weight is 6.0 tonnes. This would be Australia wide. If anybody is registering with a cheater weighbridge slip then they will eventually be found out. Only needs one vehicle to be put up on the portables or over the pits and the house of cards will come tumbling down.

Different variants have different front axle weights and so far it seems that the ones that go over the scales in Victoria have been knocked back. The ones sold in NSW have a brown slip, however have not heard if any have subsequently been targetted by the mermaids. Given that they have rear air suspension, it could be amatter of having too much air in the rear transferring too much weight to the front when empty.

We do know that a lot have been going to the warves for shipping to Zimbabwe for use in mines.

Originally Posted by Lotz-A-Landies

it could be amatter of having too much air in the rear transferring too much weight to the front when empty.

Nahh, they dont change that much in height.

Originally Posted by Blknight.aus

Nahh, they dont change that much in height.

Thought they'd be the same as a semi. I have a friend who drives B Doubles, loaded in Brisbane and was right on the axle limits when he entered NSW.

When he arrived at Mt White he was light on the drive and overweight on the A trailer. The only thing that changed was the fuel used which allowed the fifth wheel to lift transferring weight to the axle group on the A. He had to cop the fine even though the whole combination was below the limits.

yep, when you have a ton of fuel on board between the drive bogie and the steers that will happen to you but also look at the distances involved with the weight transfer. Going under/over and having the weight bias upset between the steers and the bogies I can understand but I suspect that in your friends case he may have also had some load shift, this is especially annoying for fruit haulers that have those plastic pallets on flat steel tray tautliner trailers, load it all up on the head boards with 6 inches to spare at the back and an inch between each pallet to make it easy for the forky and by the time you get up the first hill its all on the tail gates and your weight distribution is gone to hell.


the macks got something like 300l and the tank(s) are behind the rear wheels.

sure with a dual tank mack both filled and running empty it might be enough to make a difference but Id expect it to only be 5-19kg at the front wheels

Has anyone seen any weighbridge tickets for them?

Diana, I can't imagine any modern B-double using much more than about 500 litres of distillate Brisbane-Sydney which is 400 kilos. which would come off both steer and drive as consumed. Hardly enough to make a difference in ride height. Methinks he had a little bit much pudding on.