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- From: eliot@lanmola.engr.washington.edu (eliot)
- Subject: Re: Are there any Luxary AWD?
- Message-ID: <Nov11.194454.7565@engr.washington.edu>
- Sender: news@u.washington.edu (USENET News System)
- Organization: clearer than blir
- References: <92316.131239KXN2@psuvm.psu.edu>
- Date: Wed, 11 Nov 1992 20:01:00 GMT
- Lines: 50
-
- In article <92316.131239KXN2@psuvm.psu.edu> Karl Nordstrom <KXN2@psuvm.psu.edu> writes:
- >>Audi quattro!! the cars that started the ball rolling. The company
- >>with the most experience with the most refined AWD system your money
- >>can buy.
- >
- >Well which is the better system, Porsche's or Audi's?
-
- the porsche system is clearly more complex and sophisticated.. computers
- controlling multi-plate clutch packs for the differentials. the one found
- on the carrera 4 is much toned down from the ultimate one found in the 959
- which boasts variable torque split. (all other systems have a fixed torque
- split until one or more wheels lose grip, whereby some form of limited slip
- device re-distributes the torque)
-
- the system found on the 5 speed audi quattros (i'll get to the slush
- ones in a sec) are simple *and* effective. the torsen differential is
- fully mechanical but is truly a wonderful device. most formula 1 and
- indy cars use it; so does the much hyped desert storm vehicle, the
- humvee.
-
- the slush quattros (V8, 100) use computer controlled multiplate clutches
- for the center differential. in this respect they are the same concept
- as the carrera 4. the subaru legacy (slush) and svx also use this.
-
- to answer your question, theoretically speaking, porsche has the most
- advanced system in the 959.. light years ahead of anything that
- anybody else would even consider building. the 964 (carrera 4) is
- more modest and in my judgement slightly more sophisticated than
- audi's best.
-
- however, as mercedes has shown, complexity and sophistication doesn't
- necessarily convert into on-road superiority. audi's simple torsen
- based system, together with 12 years experience in tuning AWD
- suspension is extremely effective and not many people will argue with
- that. (the latest disasters are a different story though.. i'm
- referring to the 90Q).
-
- one magazine tested the 20 valve turbo quattro koop against the
- carrera 4. the carrera 4 won the comparison, but it is hard to make
- firm conclusions about who has the better system, since the cars are
- so different in layout.
-
- ok, ok you've got the gun pointed on my head now... i'll give the
- prize to porsche, but i'll give audi a close second. i'd say that if
- you were torn between buying an AWD audi and porsche, don't let the
- AWD system be the deciding factor....
-
- ciao,
-
- eliot
-