Air bag size for coil spring

G'day Batts

Thanks for the reply yeah I did contact polyair and they did not seem interested , they suggested I contact a company called airbagman or something like that which I did and I received no reply from them ,I am thinking because its not something they can look up in their database they could not be bothered.

Yeah I realise some air around 15 psi is supposed to be in them at all times but I am not sure how snug a fit they are meant to be I am guessing there should be a little play in the width but just but wondered about the length.

When you say custom springs are they extra long or something because I don't think you can fit bags if you have more than a 50mm longer spring unless your spring is an irregular shape tapered or something, have you had it radically changed or something. You should be able to get bags to suit your vehicle brand. I have bags in my patrol it's standard height and I had bags in a disco with a 50mm lift. I dealt with airbagman yrs ago bit slack responding and unusually surprised when you make warranty claims they use to have problems with valve stems leaking it was a known problem. Are you custom springs soft and set up for lots of wheel travel could be a problem as well.

I have upgraded from a 13mm diameter wire to a 15mm they are only about 30mm longer but have given the rear end quite a lift due to less sag in the spring the, I had King springs and coil spacers along with airbags fitted before which gave it about a 50mm lift but on a recent trip down the Hay River track one of the airbags sprung a leak and it was bottoming out on even the slightest bump due to the amount of weight one needs to carry on such a trip, so I decided to get a set of springs custom made and they themselves may be all I need now, but I am thinking about the airbags as they don't cost that much and I figure it can't do any harm to have them, as I already have the hoses and valve fitted which are perfectly fine.

OOPS that should have read upgraded from 15mm to 17mm wire not 13 to 15

Have you tried other suppliers I'm no expert but surely there would be no problem running bags in them especially now you have a heavier spring that will offer more support maybe just buy some and chuck them in good luck

Hi Grizzle

Thanks very much will give them a shot .