[s-cars] EDL Vs. Manual Diff Lock

[Joseph Pizzimenti]

Since we're all gluttons for punishment...is there any
conceivable way to retrofit EDL to a pre-95.5 car?

Joe

--- Robert Pastore <rpastore at animalfeeds.com> wrote:
> This message is in MIME format. Since your mail
> reader does not understand
> this format, some or all of this message may not be
> legible.
> --
> [ Picked text/plain from multipart/alternative ]
> Joe:
>
> I've had very little seat time in the sedan since
> installing the torsen
> (it's the wife's car FOR NOW).   In daily driving
> there is no noticeable
> difference between the two.  I guess that is a good
> thing.
>
> Driving the EDL sedan without snow tires previously
> was so scary that it
> inspired me to (a) buy snow tires and (b) install a
> torsen.
> What is unfortunate for the scientific community
> here is that in the
> interim, I crashed the car, and it took 2 years to
> put it back together.
> I lost interest in determining the individual effect
> of just the snows,
> just the torsen etc.
>
> The testing I have done is limited to 15 minutes of
> immaturity in the
> local Target parking lot during a snow storm.   I
> was impressed that the
> car just hooked up and went straight from drag race
> style starts.  It
> also seemed to stay straighter under fairly heavy
> braking.   I did the
> same with my diff lock avant the next day (also with
> snow tires), and it
> also hooked up well but wiggled a bit more than the
> sedan on
> acceleration.  Under braking the diff lock car (was
> unlocked ) and
> definitely was more of a handful.
>
> This is all far from conclusive, but I think it is a
> very good mod for
> an EDL car, and a decent mod for a car with a
> locker.  Keith sent me a
> SAE paper a while ago that tested the EDL and Torsen
> combination
> together and it concluded there were significant
> synergies when both
> systems were applied together.
>
>
> Bob
>
> -----Original Message-----
> From: Joseph Pizzimenti [mailto:pizzoman at yahoo.com]
> Sent: Wednesday, January 15, 2003 4:01 PM
> To: Wayne Dohnal; S-car list;
> jhull at cs.autometric.com
> Subject: Re: [s-cars] EDL Vs. Manual Diff Lock
>
>
> Would Uncle Bob like to chime in on how he likes the
> Torsen Rear w/EDL vs. open rear w/EDL?  Us poor
> slobs
> with pre 95.5's MAY be considering installing a
> torsen
> rear...Enlighten us.
>
> Joe
> --- Wayne Dohnal <dohnal at hevanet.com> wrote:
> > >Can anybody discuss the pros and cons of each?
> > Trying to decide if it's
> > >worth it to go for a 95.5 S6 Vs. a 95
> > >Jeremy Hull
> >
> > Keith Maddock has discussed this at length in the
> > past.  If you can find his
> > posts in the archives that would be the best.
> I'll
> > try to hit the meat of
> > what he said, but he works with this stuff and
> > explains it the best.  The
> > only Pro of EDL is that it automatically engages.
> > So if you hit some
> > slippery stuff unexpectedly, it's there to help
> you
> > when you might not have
> > engaged the diff lock.  It's also cheaper to
> > manufacture, since all of the
> > hardware is already there for ABS.  It's only 'a
> > simple matter of
> > programming' which, of course, is free (sorry,
> > Keith, I couldn't resist).
> >
> > Once the diff lock is engaged it is superior.  If
> > one wheel has zero
> > traction, all of the torque on the axle will go to
> > the other wheel, the
> > ideal situation.  With EDL a maximum of 50% of the
> > axle's torque will go to
> > the wheel with traction, while you're heating up
> the
> > brake pads on the
> > slipping wheel with the other 50%.  But you will
> > never achieve even 50% of
> > the torque to the wheel with traction because the
> > EDL must let the slipping
> > wheel rotate some to test if it slipping or not,
> > resulting in further
> > inefficiency.
> >
> > I'm amazed how fast my S4 will accelerate on
> packed
> > snow with the diff
> > locked.  And it does it in a straight line, too.
> > But I can't help feeling
> > that most people would rather have the sport
> > steering wheel than a locking
> > rear.
> >
> > Wayne Dohnal
> > 1994 S4
> >
> > _______________________________________________
> > S-CAR-List mailing list
> > S-CAR-List at audifans.com
> >
> http://www.audifans.com/mailman/listinfo/s-car-list
>
>
> __________________________________________________
> Do you Yahoo!?
> Yahoo! Mail Plus - Powerful. Affordable. Sign up
> now.
> http://mailplus.yahoo.com
> _______________________________________________
> S-CAR-List mailing list
> S-CAR-List at audifans.com
> http://www.audifans.com/mailman/listinfo/s-car-list
> _______________________________________________
> S-CAR-List mailing list
> S-CAR-List at audifans.com
> http://www.audifans.com/mailman/listinfo/s-car-list


__________________________________________________
Do you Yahoo!?
Yahoo! Mail Plus - Powerful. Affordable. Sign up now.
http://mailplus.yahoo.com