Vehicle & Technical > Discovery
aftermarket front bumper for disco 2?
td5disco:
The way the SRS ECU works is in two parts: shock force sensor and a decelerometer. This is located under the center console and has no direct connection with the bumper or crush cans.
Shock sensor - this works on the amount of shock load that is transmitted along the chassis. The crush cans are there to absorb some of the shock and therefore reducing the affect on the sensor. If you looked at a LR crush can against a ARB or TJM, then you'd wonder how the latter two would be able to deform (and therefore absord some of the shock) in an accident. No crush cans means that the required shock is transmitted sooner to the sensor to meet the required level to deploy the airbag.
Also you don't want a weak crush can that will deform whilst winching etc.
Decelerometer - doesn't matter what you have fitted to the front as this is purely down to how fast you slow down.
Both sensors have to register at the same time for the airbags to be deployed.
kzycnn:
To rephrase then, does the BearMach bumper contain crush cans and will yours?
If not and I'm reading you correctly, then there is a chance that either the air bags will go off when you don't want then to or, more importantly (perhaps) will not go off in the event of an accident.
Tony
Rangie3.0LtrDan:
Heyup Mark,
Have you finished the Tubular Winch Bumpers yet? Looking forwards to the piccie of that one!
Dan
td5disco:
--- Quote from: "kzycnn" ---To rephrase then, does the BearMach bumper contain crush cans and will yours?
--- End quote ---
no.
--- Quote from: "kzycnn" ---If not and I'm reading you correctly, then there is a chance that either the air bags will go off when you don't want then to or, more importantly (perhaps) will not go off in the event of an accident.
--- End quote ---
The airbags will still go off but the shock forces will be meet a little sooner.
Offroading, where you hit something hard, you are not going fast enough for the decelerometer to come into affect - I have done this on several occasions.
You have to hit something hard enough and must be going fast enough for the sensor to register both at the same time, for the airbags to go off.
td5disco:
--- Quote from: "90HTDT" ---Heyup Mark,
Have you finished the Tubular Winch Bumpers yet? Looking forwards to the piccie of that one!
Dan
--- End quote ---
A couple of set backs, but hoping to have them finished for Xmas and powder coated 1st week of Jan. If I can get it all done for Xmas then I will.
Pic will follow.
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