springs

G'day Leon ,
check this site out, hope it helps www.polyair.com.au/







cheers Nev

I take it the truck has rear leaf springs. The best way is to add additional leafs and reset the second stage of the spring so it takes the weight earlier .A rebound leaf is also a good option.

I recommend not to use pol Air Bags, as your main suspension upgrade, between the Axle and the chassis. While they carry the load for a while, they put stress on the chassis and I have seen several broken chassis because of this set up.

Cheers
Wayne B

Hi Leon

I found that upgraded rear springs by 600kgs and air bags to assist was best for our cruiser. Good shockers will help no end also.

Is that 500/600 kgs empty or fully loaded with extra fuel,water etc

I reckon you should work on fully loaded weight for calculations

Cheers

Slam bags are the only way to go

http://www.slamspecialties.com/air_bags.html

Unlike poly air - these will not fall over.
Check it out b4 buying bags. I had these fitted with an inbuilt comp adjustable from the cockpit

hi leon
there is some imfo in thread number 85183 that may be of interest
cheers

HI Leon,I have a Toyota hi lux that I use for a slide on camper.I beefed up rear springs and replaced the Toyota shockies. Even still with this upgrade fully loaded there is still a bit of sway movement and off road can be tricky.my advice is keep the weight down as much as possible.with the bigger springs it is a hard ride when I remove the camper.I traveled for 8 months on the road it was great ,no towing and everything on the back and our bed set up in minutes.cya lucky Phil

G'day Leon, I carried a 1 tonne slide on around the paddock on my 'Cruiser which I had fitted with PolyAir bellows type bags, only way to go IMHO.
Level ride, no sway, no drama.
Rob.

The OP asked for recommendations for a BT 50 and only 3 replies pertained to that vehicle.

There has been several reports on different forums of these vehicles (and others similarly sprung) cracking chassis

This seems to be vehicles which have had air bags installed and carrying heavy loads rearward in the vehicle.

It has been pointed out that installing air bags centres the weight in one spot instead of spreading it as with leaf springs, causing flex and ultimately cracking.

In the light of that why would any one recommend airbags.

A cruiser with coils is a different thing altogether but I would recommend
Progressive springs rather than airbags in a coil sprung vehicle.