I want to pop an air bag

Have fun but you're going to have a long wait.

Why a long wait? These devices are triggered by accelerometers sensing a strong G force which in turn fire a 12 volt 500 millamp charge down a simple pos and neg wire. Since first posting I have some feedback from manufacturers and now have two seats with air bags fitted and we will build a simple test rig and see what happens.

Perhaps you should video it. You can then run it in slow motion and really see what happens.

Beware of the fine white powder which seems to get everywhere.

Obvious question.. why?

title says 'want', initial post says 'need'.

Just curious (as, perhaps, are you).

Are you doing any high-speed filming of this? be curious to see it.

-- Mark.

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It can also irritate the skin, and eyes.

I doubt if it's just a straight 12v dc feed. It would be too easy for a short-circuit in the wiring to cause false deployment.

JOhn

Shush now.

You may well be right. Certainly Mr Duncanwood seeems to think you are but I remain confident. Actually I have no choice as no-one has suggested an alternative. This is being written at 09:07. By mid afternoon I will know for sure because I expect to have fired two by then. After these initial two we will run a series of eight further deployments which will be filmed, some of them with a high speed camera. It all promises to be fun.

We are hoping to get some high speed footage but the cost of this seems to be spectacular. I would have been happy with a high speed consumer digital camcorder but I'm not sure such things exist. Not quite so confident now I have examined the gas generator and seat wiring but have convinced all around me that I know what I'm doing. I will let you know the outcome.

Laurence ( snipped-for-privacy@townandcountrycovers.com) gurgled happily, sounding much like they were saying :

Make sure your colleagues know where to tell us, just in case...

Yes John, thats exactly what it turned out to need. Didn't have a car battery so hooked two small 6 volt dry cells up together to give us 12 volts and attached wires to any plugs I found under the seat. First two I chose BANG. Simple as that. If you had your face too near it there is no doubt it could break your neck but as long as you are a couple of feet away and there are no loose things hanging about its all pretty easy. I guess the only safety to prevent unintentional deployment is very clever software inside the deployment controller. After that it's all down to making sure you don't put any live 12v wires under the seat. I have read of them being deployed by static and certainly we took care to dischare any static in the wires before hooking them up. Got the whole office down to watch and just before I touched the wires onto the battery some joker fired off a party popper. There's always one, isn't there?

The white powder is only talc or chalk powder I believe, to stop the bag sticking itself during prolonged periods of being compressed.

I can understand how it might irritate the eyes, but how so the skin?

Laurence ( snipped-for-privacy@townandcountrycovers.com) gurgled happily, sounding much like they were saying :

You mean like electric seat adjustment, or heated seats or even CD changers mounted under the seats...?

Or Amplifiers with pretty beefy wiring and high ampage?

Yeah - good point.

That's why they have it in an airbag that gets slapped in your face, to itch you right up! Don't be silly son. I've had an airbag in the face and I walked away looking a bit like casper, that was it.

You irritate my skin and eyes.

Are you sure they're not like airbags, and need an AC trigger before they'll go off?

Pete.