Pyrotechnic Pretensioners?

  • Thread starter Thread starter jj
  • Start date Start date
J

jj

Is anyone familiar with "pyrotechnic pretensioners" for seatbelts. I
have them in my 2004 Camry. They are used to quickly take up the
seatbelt slack in the event of a major front-end collision. Since
these devices are explosive or at least contain a fom of explosive, I
am wondering whether they are very noisy when they deploy (like, can
they damage hearing)?

Thanks,

JJ
 
They are not that loud.
A little above the sound of a .22 rifle
or below .410 gauge shot gun going off.
I have set them off for warranty return and they are not that loud.
The sound of crunching metal along with front and/or side ari bags going off
you would probably never even notice the pre-tensioner sound.
Just remember, all of that noise, is the sound of Safety.
BD
 
They are probably the same sort of equipment as used by Volvo and are only a
small charge, detonated electrically, enough to push a piston some 4-five
inches, dragging a steel cable with it to tighten the seat-belt roller. I think
the noise of the discharge would be lost in the general noise of the cause of
the tightening (crash stop etc.).

Cheers, Peter.

: Is anyone familiar with "pyrotechnic pretensioners" for seatbelts. I
: have them in my 2004 Camry. They are used to quickly take up the
: seatbelt slack in the event of a major front-end collision. Since
: these devices are explosive or at least contain a fom of explosive, I
: am wondering whether they are very noisy when they deploy (like, can
: they damage hearing)?
:
: Thanks,
:
: JJ
 
You must log in or register to reply here.
Back
Top