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would a fire extinguisher likely explode in a car crash?

Posted: Mon Nov 04, 2013 9:01 pm
by Giselle
I'm very safety concious and wouldn't mind storing a small fire extinguisher in my car. It looks like a good place to store it might be on the floor behind the passenger seat.

Since it's under pressure though, I'm concious about whether they'd explode in a car crash? Might be best to keep it out of the cabin then

Re: would a fire extinguisher likely explode in a car crash?

Posted: Mon Nov 04, 2013 9:06 pm
by olboy
If the crash was bad enough to make it explode then I don't think you would care

Re: would a fire extinguisher likely explode in a car crash?

Posted: Mon Nov 04, 2013 9:15 pm
by doc
The pro's and con's for having, not having a fire extinguisher in your car are straight forward.
Ask anyone who has had an engine bay fire.
Put it out, or watch your pride and joy burn to the ground.

Re: would a fire extinguisher likely explode in a car crash?

Posted: Mon Nov 04, 2013 9:15 pm
by Evil Panda
They threw one in a fire on Mythbusters once and the safety valve just released the compressed air.
Assume it would do the same if it were being crushed.
But like olboy said, if it's at that point and it's in the cabin... what happens to a fire extinguisher is the least of your worries.

Re: would a fire extinguisher likely explode in a car crash?

Posted: Mon Nov 04, 2013 9:21 pm
by Giselle
Thanks :) My car is fairly new (It hasn't even hit the road yet- garage queen) so I'm still trying to work out how to make the most out of the room that a NA offers

Re: would a fire extinguisher likely explode in a car crash?

Posted: Mon Nov 04, 2013 9:38 pm
by JBT
The main consideration would be to bolt it down properly so it doesn't become a missile in the event of a prang.

Re: would a fire extinguisher likely explode in a car crash?

Posted: Mon Nov 04, 2013 9:40 pm
by Suspense
Make sure it's bolted down. You can buy brackets or make one fairly easily. Far safer than having a missile loose in the cabin in a crash.

Edit: my slow typing beaten by JBT!

Re: would a fire extinguisher likely explode in a car crash?

Posted: Mon Nov 04, 2013 9:51 pm
by manga_blue
x2. They weigh about 2Kg and they're absolutely lethal if they're flying about the cabin in a crash. You should bear in mind the CAMS regulations for mounting extinguishers: "Hand-held fire extinguishers must remain restrained under an acceleration of 25G". So that means a 2Kg extinguisher should have a mounting strong enough to withstand 50Kg of force on it. Usually this means 4 6mm mounting bolts on an all steel bracket.

Re: would a fire extinguisher likely explode in a car crash?

Posted: Mon Nov 04, 2013 9:59 pm
by hks_kansei
Yeah, they have safety valves.

Same as car LPG tanks.

Re: would a fire extinguisher likely explode in a car crash?

Posted: Mon Nov 04, 2013 10:31 pm
by Regie
just don't crash :D

Re: would a fire extinguisher likely explode in a car crash?

Posted: Tue Nov 05, 2013 10:23 pm
by 22Silver
If the crash was strong enough to blow up a fire extinguisher, you'd probably be counting your lucky stars that the cabin was full of non-flammable gas directly after the crash..

Assuming the drivers side of the cabin took like, less than 10% of the force that the passengers side with the extinguisher did.. Because fire extinguishers are made to contain a fair load of pressure.

Re: would a fire extinguisher likely explode in a car crash?

Posted: Wed Nov 06, 2013 9:09 am
by OurCognitiveSurplus
The hazard of the extinguisher is that it's a brick that could become a projectile in a crash. Install one, but make sure the system for installing it is very strong. A 1kg extingisher in a crash causing a 100G load(injury but not certain death) will exert a 100kg force on that bracket. You want it to be STRONG.

Re: would a fire extinguisher likely explode in a car crash?

Posted: Wed Nov 06, 2013 10:27 am
by 22Silver
Has anyone ever considered the pros and cons of fire blankets?

Re: would a fire extinguisher likely explode in a car crash?

Posted: Wed Nov 06, 2013 10:52 am
by hks_kansei
22Silver wrote:Has anyone ever considered the pros and cons of fire blankets?


They work great when you can cover the fire with them.

Unfortunately, cars don't really have many places you can easily throw a fire blanket over without it still having air gaps for the fire to breathe.


A 1kg extinguisher is the easiest to mount/carry, but just be aware that they're not really big enough to stop a decent fire (ie: engine bay)

Re: would a fire extinguisher likely explode in a car crash?

Posted: Wed Nov 06, 2013 10:58 am
by NitroDann
ITT: Too many hollywood films.

OP: No.

Dann