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Re: [Mgs] Steering Wheel

To: Richard Ewald <>, Douglas McKinnie
Subject: Re: [Mgs] Steering Wheel
From: Dan Dwelley <>
Date: Fri, 5 Mar 2010 15:20:05 -0800 (PST)
How about a loud mouth in the passenger seat? Doesn't that constitute an "air
bag"? Honey...I'm taking your mother for a ride in the MG... :o)))

----- Original Message ----
From: Richard Ewald <>
Douglas McKinnie <>
Sent: Thu, March 4, 2010 10:49:35 AM
Subject: Re: [Mgs]
Steering Wheel

On Thu, Mar 4, 2010 at 6:17 AM, Douglas McKinnie
<> wrote:

> I'm pondering this half with my engineer's hat
(is possible/this going to
> be
> dangerous?) and half with my psychologists
hat --

> "everyone knows that car's with airbags are safer, and this car now
has an
> airbag, so therefore it is safer"

I taught design, function, and
repairs on airbag systems for 15 years.
Personally I would be very reluctant
to try and retrofit an airbag system
(any airbag system) into a car that was
not designed for it.
I mean just starting with the wheel, is the diameter of
the shaft and the
spline count the same?  What effects would an airbag
deployment have on the
column, and other interior pieces around the column? 
Is it a tethered bag
or an untethered bag? How big is the bag?
And finally the
two biggies 1. How will you know the effects in a crash
without a crash test?
2. How do you know the car is safer?

> For the latter, all I really need is
a convincing pillow on the
> steering-wheel
> with a nice "airbag" or
"Restraint-system" logo. Whether it is functional
> is
> immaterial. Have any
of you tested your air-bags to see if the actually
> work?
> Then why are you
convinced they will?

Well I don't know about your car, but yeah I can be
pretty damn close to
100% sure my bags will go off when needed.  The normal
condition of the
warning light is on, the SRS system will only turn it off is
all is OK.. The
entire system checks itself 4X second.  If a fault is recorded
for 40 or
more of these checks, the SRS light is turned on. In addition a
plain text
message is displayed that there is an SRS fault.
So unless the
accident occurs <10 seconds after the fault occurs, the system
will work as
advertised.  So yeah I am convinced.
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