[s-cars] future of awd

[Keith Maddock]

The question is.. is this useful (for hardware protection) shutdown in
the Haldex smart enough to not bail out in the middle of a
limit-handling procedure?

I know it COULD be, whether or not thats implemented or not is a
different question.

eAWD is a pretty cool area - there is lots of hardware, lots of
computing power, lots of software.  What will set the OEMs apart from
eachother, in the next few years, is:  Who is willing (or able) to
spend the development money (or force their suppliers to spend the
development money on their own systems plus work together with the
other supplier systems) to make the most out of this capability? -
Especially when it's dubious if the end-user customer base gives a
cr at p enough to differentiate/discriminate between a GOOD eAWD
integration and a so-so one, to give the OEM a payback for their
investment.

The more I see, the more I want to keep buying cars for my own
driveway with a Torsen.  Stellar performance 99.99% of the time, and
at 100k or 200k or 300k when all the electronics break down, you still
have AWD.  Give me X-Drive in a M5 or M3, and enough $$ to lease a new
one every 2-3 years, and I'll defect :)  (either that or get me the
heck out of the midwest...)

Just my 2cents, which has a NPV of zero.

Keith

On 4/25/07, QSHIPQ at aol.com <QSHIPQ at aol.com> wrote:
>
> News to me, I can certainly discuss this with Haldex, or maybe Keith Maddock
> can pipe in here.
>
> And/or Colin can pipe in here.  Taka, I know that our group A S2 had coolers
> for trans and rear diff.  I know even with coolers, torsens break from heat,
> lockers break from heat, and VC will hump and fail from heat.  Prodrive
> can't keep transmissions in the subarus in rally.
>
> I suspect that since Haldex is raced, that a cooler would help emensely.  I
> also appreciate the fact that Haldex has an overheat shutdown, that
> protection is what the scoobies really need.
>
> SJ
>
>
> In a message dated 4/25/2007 6:31:55 A.M. Central Standard Time,
> t44tqtro at gmail.com writes:
> Scott-
> One thing- until the Haldex engineers install a cooling system for the
> Haldex, it's a liability at the track. The V70R forum is full of people who
> have tracked their cars and experienced Haldex overheating and shutdown. The
> car goes to FWD only when that happens, without any real warning.
>
> I would not track any car with Haldex for that reason alone, until someone
> figures out how to cool the system down so that it does not overheat.
>
> Note that this doesn't happen on the street, but in the extreme environment
> of track days and experienced drivers pushing the car to its limits,
> probably with R compound tires and race pads. (most likely so, considering
> the same guys heat their calipers to the point that the grey paint becomes
> burnt orange)
>
> Taka
> _______________________________________________
>
>
>
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