So much for EDL!!
#21
Guest
Posts: n/a
Re: So much for EDL!!
In message <3au13tF6ec2igU1@individual.net>
"Ronny" <ronny@nospamfsplanes.net> wrote:
> I didnt think the 98 A4 had EDL? it should be true Torsen 4wd 50/50.?
>
> The electonic gizmo's started in 2000??
Not true! Even my 96 A4 2.6 FWD was equipped with EDL and ASR.
--
Peter Bell (Note Spamtrap - To reply, replace 'invalid' with 'bellfamily')
"Ronny" <ronny@nospamfsplanes.net> wrote:
> I didnt think the 98 A4 had EDL? it should be true Torsen 4wd 50/50.?
>
> The electonic gizmo's started in 2000??
Not true! Even my 96 A4 2.6 FWD was equipped with EDL and ASR.
--
Peter Bell (Note Spamtrap - To reply, replace 'invalid' with 'bellfamily')
#22
Guest
Posts: n/a
Re: So much for EDL!!
In message <3au13tF6ec2igU1@individual.net>
"Ronny" <ronny@nospamfsplanes.net> wrote:
> I didnt think the 98 A4 had EDL? it should be true Torsen 4wd 50/50.?
>
> The electonic gizmo's started in 2000??
Not true! Even my 96 A4 2.6 FWD was equipped with EDL and ASR.
--
Peter Bell (Note Spamtrap - To reply, replace 'invalid' with 'bellfamily')
"Ronny" <ronny@nospamfsplanes.net> wrote:
> I didnt think the 98 A4 had EDL? it should be true Torsen 4wd 50/50.?
>
> The electonic gizmo's started in 2000??
Not true! Even my 96 A4 2.6 FWD was equipped with EDL and ASR.
--
Peter Bell (Note Spamtrap - To reply, replace 'invalid' with 'bellfamily')
#23
Guest
Posts: n/a
Re: So much for EDL!!
Hello,
My 2 cts:
"JP Roberts" <1234@yahoo.com> wrote in message
news:d2bsq3$jrn$1@news.ya.com...
> My conclusion is that while Torsen works flawlessly, EDL (Electronic
> Differential Lock) is no less than a big fiasco, at least when there is a
> big difference in terms of surface friction coeficient between the two
sides
> of the car alongside.
EDL is not actually lockking the diff's but activates the brakes on the
spinning
wheel. ABS is used to detect the slip.
There where some constraints in the manaual iirc about heating up and
disengagement. But if I read how it was tested I don't think that was the
case.
Probably the brake could not handle the power coming from the engine
in the tested circumstances (slope to steep?).
It would be interesting to know if after the test the spinning wheel was
hot,
if not the the conditions where not detected and brake was not engaged
at all (or something was broken) . If hot then at least someting was
working.
I assume that you did not decativate ABS during this test (don't knwo if
thats possible).
On my 03 allroad I actually have EDL seen working but circumstances where
different. (Left - right traction was unequal but It was not on a slope).
-Reijer-
My 2 cts:
"JP Roberts" <1234@yahoo.com> wrote in message
news:d2bsq3$jrn$1@news.ya.com...
> My conclusion is that while Torsen works flawlessly, EDL (Electronic
> Differential Lock) is no less than a big fiasco, at least when there is a
> big difference in terms of surface friction coeficient between the two
sides
> of the car alongside.
EDL is not actually lockking the diff's but activates the brakes on the
spinning
wheel. ABS is used to detect the slip.
There where some constraints in the manaual iirc about heating up and
disengagement. But if I read how it was tested I don't think that was the
case.
Probably the brake could not handle the power coming from the engine
in the tested circumstances (slope to steep?).
It would be interesting to know if after the test the spinning wheel was
hot,
if not the the conditions where not detected and brake was not engaged
at all (or something was broken) . If hot then at least someting was
working.
I assume that you did not decativate ABS during this test (don't knwo if
thats possible).
On my 03 allroad I actually have EDL seen working but circumstances where
different. (Left - right traction was unequal but It was not on a slope).
-Reijer-
#24
Guest
Posts: n/a
Re: So much for EDL!!
Hello,
My 2 cts:
"JP Roberts" <1234@yahoo.com> wrote in message
news:d2bsq3$jrn$1@news.ya.com...
> My conclusion is that while Torsen works flawlessly, EDL (Electronic
> Differential Lock) is no less than a big fiasco, at least when there is a
> big difference in terms of surface friction coeficient between the two
sides
> of the car alongside.
EDL is not actually lockking the diff's but activates the brakes on the
spinning
wheel. ABS is used to detect the slip.
There where some constraints in the manaual iirc about heating up and
disengagement. But if I read how it was tested I don't think that was the
case.
Probably the brake could not handle the power coming from the engine
in the tested circumstances (slope to steep?).
It would be interesting to know if after the test the spinning wheel was
hot,
if not the the conditions where not detected and brake was not engaged
at all (or something was broken) . If hot then at least someting was
working.
I assume that you did not decativate ABS during this test (don't knwo if
thats possible).
On my 03 allroad I actually have EDL seen working but circumstances where
different. (Left - right traction was unequal but It was not on a slope).
-Reijer-
My 2 cts:
"JP Roberts" <1234@yahoo.com> wrote in message
news:d2bsq3$jrn$1@news.ya.com...
> My conclusion is that while Torsen works flawlessly, EDL (Electronic
> Differential Lock) is no less than a big fiasco, at least when there is a
> big difference in terms of surface friction coeficient between the two
sides
> of the car alongside.
EDL is not actually lockking the diff's but activates the brakes on the
spinning
wheel. ABS is used to detect the slip.
There where some constraints in the manaual iirc about heating up and
disengagement. But if I read how it was tested I don't think that was the
case.
Probably the brake could not handle the power coming from the engine
in the tested circumstances (slope to steep?).
It would be interesting to know if after the test the spinning wheel was
hot,
if not the the conditions where not detected and brake was not engaged
at all (or something was broken) . If hot then at least someting was
working.
I assume that you did not decativate ABS during this test (don't knwo if
thats possible).
On my 03 allroad I actually have EDL seen working but circumstances where
different. (Left - right traction was unequal but It was not on a slope).
-Reijer-
#25
Guest
Posts: n/a
Re: So much for EDL!!
Hello,
My 2 cts:
"JP Roberts" <1234@yahoo.com> wrote in message
news:d2bsq3$jrn$1@news.ya.com...
> My conclusion is that while Torsen works flawlessly, EDL (Electronic
> Differential Lock) is no less than a big fiasco, at least when there is a
> big difference in terms of surface friction coeficient between the two
sides
> of the car alongside.
EDL is not actually lockking the diff's but activates the brakes on the
spinning
wheel. ABS is used to detect the slip.
There where some constraints in the manaual iirc about heating up and
disengagement. But if I read how it was tested I don't think that was the
case.
Probably the brake could not handle the power coming from the engine
in the tested circumstances (slope to steep?).
It would be interesting to know if after the test the spinning wheel was
hot,
if not the the conditions where not detected and brake was not engaged
at all (or something was broken) . If hot then at least someting was
working.
I assume that you did not decativate ABS during this test (don't knwo if
thats possible).
On my 03 allroad I actually have EDL seen working but circumstances where
different. (Left - right traction was unequal but It was not on a slope).
-Reijer-
My 2 cts:
"JP Roberts" <1234@yahoo.com> wrote in message
news:d2bsq3$jrn$1@news.ya.com...
> My conclusion is that while Torsen works flawlessly, EDL (Electronic
> Differential Lock) is no less than a big fiasco, at least when there is a
> big difference in terms of surface friction coeficient between the two
sides
> of the car alongside.
EDL is not actually lockking the diff's but activates the brakes on the
spinning
wheel. ABS is used to detect the slip.
There where some constraints in the manaual iirc about heating up and
disengagement. But if I read how it was tested I don't think that was the
case.
Probably the brake could not handle the power coming from the engine
in the tested circumstances (slope to steep?).
It would be interesting to know if after the test the spinning wheel was
hot,
if not the the conditions where not detected and brake was not engaged
at all (or something was broken) . If hot then at least someting was
working.
I assume that you did not decativate ABS during this test (don't knwo if
thats possible).
On my 03 allroad I actually have EDL seen working but circumstances where
different. (Left - right traction was unequal but It was not on a slope).
-Reijer-
#26
Guest
Posts: n/a
Re: So much for EDL!!
>
> EDL is not actually lockking the diff's but activates the brakes on the
> spinning
> wheel. ABS is used to detect the slip.
Yep, I was totally aware of that.
> There where some constraints in the manaual iirc about heating up and
> disengagement. But if I read how it was tested I don't think that was the
> case.
I'd been driving very slowly and not touching the brakes since the start of
the journey, because it was all uphill basically. The other two cars had
been sitting at the restaurant's car park for some 3 hours, so the brakes
had had an equally long rest before the test.
> Probably the brake could not handle the power coming from the engine
> in the tested circumstances (slope to steep?).
> It would be interesting to know if after the test the spinning wheel was
> hot,
> if not the the conditions where not detected and brake was not engaged
> at all (or something was broken) . If hot then at least someting was
> working.
> I assume that you did not decativate ABS during this test (don't knwo if
> thats possible).
I did not check disk temperature after the test - I should have thought of
that - but from what I saw when looking at the other two cars, I would have
suspected the brakes were not slowing the spinning wheels at all. Judging
from rev drop on clutch disengagement I did not feel any impressive brake
activity either (I was able to disengage at around 1,500 rmp repeatedly). On
other occasions, though and with snow under the four wheels I have felt the
brakes actuate, so I can sort of tell. Also, because I tried to be as gentle
as possible when disengaging the clutch pedal, and to keep revs as low as I
could, I don't think the torque was very impressive either, at least not
enough to override brake actuation. My car does not have an ABS button so
this cannot be disabled at will.
If I were given a second chance I would now try revving the engine to about
3,000 rev and then gently push the brake pedal while keeping the gas on to
see if that made any difference at all. Maybe that would have done the trick
of transferring torque sideways? I seem to remember having read something
about this?
#27
Guest
Posts: n/a
Re: So much for EDL!!
>
> EDL is not actually lockking the diff's but activates the brakes on the
> spinning
> wheel. ABS is used to detect the slip.
Yep, I was totally aware of that.
> There where some constraints in the manaual iirc about heating up and
> disengagement. But if I read how it was tested I don't think that was the
> case.
I'd been driving very slowly and not touching the brakes since the start of
the journey, because it was all uphill basically. The other two cars had
been sitting at the restaurant's car park for some 3 hours, so the brakes
had had an equally long rest before the test.
> Probably the brake could not handle the power coming from the engine
> in the tested circumstances (slope to steep?).
> It would be interesting to know if after the test the spinning wheel was
> hot,
> if not the the conditions where not detected and brake was not engaged
> at all (or something was broken) . If hot then at least someting was
> working.
> I assume that you did not decativate ABS during this test (don't knwo if
> thats possible).
I did not check disk temperature after the test - I should have thought of
that - but from what I saw when looking at the other two cars, I would have
suspected the brakes were not slowing the spinning wheels at all. Judging
from rev drop on clutch disengagement I did not feel any impressive brake
activity either (I was able to disengage at around 1,500 rmp repeatedly). On
other occasions, though and with snow under the four wheels I have felt the
brakes actuate, so I can sort of tell. Also, because I tried to be as gentle
as possible when disengaging the clutch pedal, and to keep revs as low as I
could, I don't think the torque was very impressive either, at least not
enough to override brake actuation. My car does not have an ABS button so
this cannot be disabled at will.
If I were given a second chance I would now try revving the engine to about
3,000 rev and then gently push the brake pedal while keeping the gas on to
see if that made any difference at all. Maybe that would have done the trick
of transferring torque sideways? I seem to remember having read something
about this?
#28
Guest
Posts: n/a
Re: So much for EDL!!
>
> EDL is not actually lockking the diff's but activates the brakes on the
> spinning
> wheel. ABS is used to detect the slip.
Yep, I was totally aware of that.
> There where some constraints in the manaual iirc about heating up and
> disengagement. But if I read how it was tested I don't think that was the
> case.
I'd been driving very slowly and not touching the brakes since the start of
the journey, because it was all uphill basically. The other two cars had
been sitting at the restaurant's car park for some 3 hours, so the brakes
had had an equally long rest before the test.
> Probably the brake could not handle the power coming from the engine
> in the tested circumstances (slope to steep?).
> It would be interesting to know if after the test the spinning wheel was
> hot,
> if not the the conditions where not detected and brake was not engaged
> at all (or something was broken) . If hot then at least someting was
> working.
> I assume that you did not decativate ABS during this test (don't knwo if
> thats possible).
I did not check disk temperature after the test - I should have thought of
that - but from what I saw when looking at the other two cars, I would have
suspected the brakes were not slowing the spinning wheels at all. Judging
from rev drop on clutch disengagement I did not feel any impressive brake
activity either (I was able to disengage at around 1,500 rmp repeatedly). On
other occasions, though and with snow under the four wheels I have felt the
brakes actuate, so I can sort of tell. Also, because I tried to be as gentle
as possible when disengaging the clutch pedal, and to keep revs as low as I
could, I don't think the torque was very impressive either, at least not
enough to override brake actuation. My car does not have an ABS button so
this cannot be disabled at will.
If I were given a second chance I would now try revving the engine to about
3,000 rev and then gently push the brake pedal while keeping the gas on to
see if that made any difference at all. Maybe that would have done the trick
of transferring torque sideways? I seem to remember having read something
about this?
#29
Guest
Posts: n/a
Re: So much for EDL!!
"Steve Sears" <steve.sears@SHOESsoil-mat.on.ca> escribió en el mensaje
news:kUj2e.2330$x8.558422@news20.bellglobal.com...
> JP,
> I seem to remember a discussion about the "roller test" at the quattro
> Challenge I attended at Mosport in 2001 - at the time they had ESP
> equipped
> on the cars so I guess you're not a believer in EDL quattro but possibly a
> believer in EDL quattro with ESP....didn't the '02 have ESP???
The '02 in question has ESP so I did not see that made a difference. Now,
I'm sure your '87 manual diff locks would have done the trick. Surely those
were the days when cars were made properly and with no big gizmos!
#30
Guest
Posts: n/a
Re: So much for EDL!!
"Steve Sears" <steve.sears@SHOESsoil-mat.on.ca> escribió en el mensaje
news:kUj2e.2330$x8.558422@news20.bellglobal.com...
> JP,
> I seem to remember a discussion about the "roller test" at the quattro
> Challenge I attended at Mosport in 2001 - at the time they had ESP
> equipped
> on the cars so I guess you're not a believer in EDL quattro but possibly a
> believer in EDL quattro with ESP....didn't the '02 have ESP???
The '02 in question has ESP so I did not see that made a difference. Now,
I'm sure your '87 manual diff locks would have done the trick. Surely those
were the days when cars were made properly and with no big gizmos!