Thread: Ex army Mack 6x6 trucks.

Bottom line is that if you go over 22.5t GVM in NSW or the ACT, you will need to do some fast talking or expect a fine....if anyone is going to the auctions either this one or the next, I would be very great full if they could get a tray height off the ground for me..im hoping to grab one of these beasts to put a Cat D5g on the back of.. the weight will be border line depending on how much diesel I've got in the dozer...the overall height is the next hurdle..thanks in advance.

Originally Posted by Summiitt

Bottom line is that if you go over 22.5t GVM in NSW or the ACT, you will need to do some fast talking or expect a fine....if anyone is going to the auctions either this one or the next, I would be very great full if they could get a tray height off the ground for me..im hoping to grab one of these beasts to put a Cat D5g on the back of.. the weight will be border line depending on how much diesel I've got in the dozer...the overall height is the next hurdle..thanks in advance.

Only if you get caught. That is why a smart operator doesn't overload just a little. You always put enough on to cover the potential fine and still show a profit.

What is the tare weight of one of those Macks with a substantial tray? What does a D5G weigh dressed with blade, ripper, and canopy? I have been out of the earthmoving sales caper for a while and don't know weights as well as I did. Equivalent Fiatallis FD9 was about 15 tons. Weight distribution will be the next problem. Can you get enough weight sufficiently forward to load the front axle, or is it already on the limit?

The tare of the Mack without drop sides, seats, bows, winch, crane or tarp is listed as 11260 kg leaving 11240 kg payload if you can believe the brownslip which is wrong in at least two other places the GVM and make of the engine.

The dump truck Brownslip lists tare as 11040 kg but are correct in GVM and engine make.

you can apply for exemption to the registered GVM if you can proove the truck is designed to handle it

It used to be common practice up north in cane country to permit some of the farming gear to go over road legal mass on the routes to the dumping points for getting it to the refinery but not transiting back or from farm to farm.

the GS in some units had exemption permits for carrying both types of apc which put the truck overweight.

It may work for the Army but I'm reluctant to try with the NSW RMS for a truck on Historic. They already limit the payload to 2/3 of the manufacturers specified limit.

If we could get Mack to certify the GVM at the 25 odd tonne under Historic we could possibly get the 9.5 Ton halftrack on the tray but not the 11.7 ton Saracen, because it would go over both the 22.5T axle limit and the 2/3 payload.

Maybe a lazy axle?

get the plant trailer...

put the halftrack on the mack, the sarecan on the trailer and its got its own loading ramps.

not seeing the problem.

Hi Dave

The Army uses the Mack Fleetliners and the 20 tonne plant trailers when they move us to Kapooka.

The problem is that the 20 Ton plant trailers are 1992 so 9 years too young for historic.

The Freighter rough terrain dogs auctioned last month would have been good, they were manufacturer GTM 20500 kg but 18000 kg RMS. I think the tare is about 5000kg making manufacturer payload 15500 kg and 10333.4 kg on historic (5000 + 10333.4 = 15333.4 Kg) so the 1982 rough terrain trailers could carry the half-track on historic without breaching the 18000 kg RMS axle limit or the historic limit, but you would then have the lighter load of a 3500 kg ferret or 7500 kg Vixen/Striker on the tray of the truck. Not the way you should be loading.

You could almost stretch the friendship and put a saracen on a rough terrain and at 16700 kg still not breach the axle limit, but again the heavy load is on the trailer and not the truck.

As a club we can not justify the expense of full registration of a truck and trailer combination. But then again the $60K cost of a truck and trailer could pay for a lot of commercial floats.

It's a dysmal spiral, if we don't get the vehicles out members lose interest, but at several thousand dollars per event it costs too much to get out often.

Originally Posted by Lotz-A-Landies

Hi Dave

The Army uses the Mack Fleetliners and the 20 tonne plant trailers when they move us to Kapooka.

The problem is that the 20 Ton plant trailers are 1992 so 9 years too young for historic.

The Freighter rough terrain dogs auctioned last month would have been good, they were manufacturer GTM 20500 kg but 18000 kg RMS. I think the tare is about 5000kg making manufacturer payload 15500 kg and 10333.4 kg on historic (5000 + 10333.4 = 15333.4 Kg) so the 1982 rough terrain trailers could carry the half-track on historic without breaching the 18000 kg RMS axle limit or the historic limit, but you would then have the lighter load of a 3500 kg ferret or 7500 kg Vixen/Striker on the tray of the truck. Not the way you should be loading.

You could almost stretch the friendship and put a saracen on a rough terrain and at 16700 kg still not breach the axle limit, but again the heavy load is on the trailer and not the truck.

well if your going to get difficult about it just get one of the 20t tilt trays, they predate the plant trailer by a log shot