Re: At what speed do airbags go off in an accident?

"^Tems^" <brookersteve913@[EMAIL PROTECTED]
> wrote in message 
news:4828e87b$0$22174$5a62ac22@[EMAIL PROTECTED]
>I went to have a look at a Mondeo for parts that had rear ended a bus.
> The guy said his niece had hit the bus at around 60 k's. Strange thing
was 
> the airbags hadn't gone off. Do they have a set speed they go off or
could 
> it have been disconnected?
>
> This is the damage to the vehicle
>
> http://i8.ebayimg.com/06/i/000/ef/9b/eacf_1.JPG
> http://i20.ebayimg.com/08/i/000/ef/9d/0571_1.JPG

Looks like you have either the sensor system disconnected, or you have a
dud 
sensor
A key element is that the crash forces are equivalent to a head-on
collision 
with an immovable barrier at 15 - 20  kilometres per hour.
Because a typical automobile accident only lasts about 0.125 (1/8th) of a 
second, air bags deploy within 15 to 20ms after the initial crash impact.
They deploy at around 300 kph and deflate around 100 ms after impact