[s-cars] Subie WRX AWD (NAC)

[Robin St.Clair]

Keith
The TT that I got seriously sideways, aka "spun but decided to stop it" was
the latest generation (mit spoiler). It impressed the Audi testers who were
watching because they didn't think that it was possible to do what I did
given the corner/speed/gear/amount of throttle that I was applying at the
time. The consensus was that it was caused by a combination of "more than
normal commitment on my part" and the unpredictability caused by the
"Open-loop nature" of the Mk I Haldex.
Similarly, the other day in Barcelona, when on an in-lap (and therefore
'taking it easy'), I managed to provoke virtually the same reaction in the
second half of an S-bend (at the end of the main straight), in exactly
opposite dynamic conditions, on a trailing throttle in 4th gear, the rear
snapped out as I transited into the second half of the combination, the car
was 'light' and carry quite a lot of speed.
Haldex sure makes life interesting, I don't think the ESP had cut in in the
latter case.

R+C

-----Original Message-----
From: Keith.Maddock at trw.com [mailto:Keith.Maddock at trw.com]
Sent: Thursday, 16 January 2003 5:37 PM
To: S-CAR-List at audifans.com; robin.stclair at web.de;
uberseehandel at yahoo.com
Subject: Re: [s-cars] Subie WRX AWD (NAC)


Robin,

I was mentioning a R32, not a WRX that we got.  The R32 has the 1st gen
Haldex, so appropriate caution (or modified haldex-control programming on my
part) may be necessary to avoid the Haldex-bite.

Our S3 is getting a 2nd gen Haldex retrofit., I'll update when I see some
data.

Did the TT you spun have a rear spoiler? :-)

Keith

****************************************************************
Keith Maddock, TRW Automotive,  Koblenz, Germany
Slip Control Systems, Systems Design, Traction Control
+49 (0)261/ 895 2474     -    -    keith.maddock at trw.com


>>> uberseehandel at yahoo.com 16:40:06 16.01.2003 >>>
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Keith

A Scoobie round the 'Ring - we wouldn't want you to go maddocking it, would
we? These AWD cars require a different technique, don't you know!

Is the 'new' haldex any more predictable than the old?

R+C

(accomplished spinner of Haldex cars when the ESP is 'ON")