Thread: Coil and airbag combos

A big sag with RTT and camping gear = time for new springs, no? Perhaps try a new pair on rear with a slightly higher rating, your old ones might be knackered.

I tour with same kind of camping weight attached to a 90 and it holds up well. Terrafirma +2" medium duty rears. Have only hit bump stops when getting caught out on fast dirt roads. With above set up the ride is harsh unloaded, but it is a 90 so less forgiving. I have some soft springs and takes me about 30mins to swap rears.

Interested to hear about bags.

The heavy duty air springs may be a good option.
If your happy with the ride when empty, then I wouldn't be changing it.
My cousin has just got the 30psi bags for when towing his camper. With little weight in the back of the car is still not quite level. ... though a noticeable improvement.

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Measure up the wire diameter and number of coils and that will give an idea of what is already in it. If you could easily pull one to measure free length and then compare with measured installed height and a quick drive over the weigh bridge to get an actual weight would allow you to calc it properly but any info is better than nothing for a start.
Helper bags don't require engineering AFAIK.
I've got a few sets of springs here that you can play with if you want to come for a drive.

Steve

Well I slept on it and have also realised the 30psi and 60psi bags are actually the same airbags, but the high pressure one comes with a protective sleeve and the cost is not much different. So I'm going to purchase the airbags and install them with the extra protective sleeve in existing springs and see how much pressure I need to level a full vehicle.

Worst case I end up with different springs to keep the airbags at a lower pressure and retain an extra protective layer on the airbags.

Just be aware that they aren't an air spring and you don't load the vehicle up and then pump up the bags to raise it. You either need to pump them up before loading, or load, pump, and drive a bit so everything settles.

Steve

Thanks I didn't realise it was quite like that, but I guess there in-lies some differences between full air and helpers. No big problem though, the intention is not to raise and lower other than once before a trip.

Hoping to get away Queens bday weekend with the airbags in so I'll decide if I need to try different springs after that.

Be careful. I am currently arguing for warranty for my bent chassis in 2013 130DC. In the absence of any cause both the dealer, Bundaberg Motor Group, and Landrover are scratching for someone or something to blame. They have pointed to non genuine accessories, namely air bags and an aluminum tray.
The tray weighs about 250kg, the tinnie on top 80 odd kg. In the back I had an outboard, 2 empty engels and fishing gear. I was towing an off-road van, ( Australian Off-road Camper, Quantum) with a ball weight of 170kg connected to a non genuine Hayman Reese towbar, another issue. I was informed that it was overloaded. How they reached that conclusion without weighing it I don't know.

I've got polyair bags in the back of my 110 Defender, they work well in levelling out the rear with a big load. For normal driving lightly loaded I run about 5 psi in them, when I first put them in I noticed a very slight harshness, but I don't notice it now and it rides well empty.
The most pressure I've had in them was about 20 psi (I think the max is 30 psi) and that was with the car completely full and a trailer on the back when I was moving house. I drove 4000 km like that, and they worked great. I think they lose a little air over time, so just check the pressures occasionally, I noticed mine was drooping a little on the drivers side rear with the heavy load, turns out it had less air than the passenger side bag did