Question about Quadradrive ??
 

I have a 2000 Jeep Grand Cherokee, with Quadradrive. (Please note that this
is not the same as Quadratec).

I like the Quadradrive, and it does well in mud , ice, and snow. But I do
have a performance question.

I built a gravel connecting driveway at our mountain place. At the point
where this driveway connects to the main driveway, the grade is about 25
degrees ( this is approximate). At times, I like to **park** on this
grade, to get this vehicle off of the main drive, and allow other vehicles
to pass on to the front of our house. To **unpark**, I like to backup, so
that I am now back on the main driveway.

When I try to back up on this 25 degree grade, my rear wheels will just sit
there and spin. The front wheels do nothing. I **cannot** back up at
all !!! I have to move forward, go down a 200 foot driveway, turn
around, and come UP the drive. The vehicle goes UP ok, because I have
forward momentum.

Considering that I have full-time 4 wheel drive, I thought that this
Quadradrive system would "sense" when one wheel is slipping, and deliver
power to the other wheels (e.g., the front wheels).

I also have an old, 1980 CJ-5. Of course , that old fart will back up
on this same spot, and almost anywhere else. It don't have no fancy
Quadradrive or any such stuff. It is just 4 wheel drive.

Are we advancing that much in these 4X4 systems ?? Am I missing
something here -- a technique or something that I have overlooked ??


Again, I feel that I have super performance in snow, ice, and mud. But
there again, that is while I am already MOVING. My current query is
why I cannot **backup** on a 25 degree grade, if all 4 wheels have
traction-- why do only two of them (the rear 2) spin ???

Thanks for any comments or advice !!

--James--

Re: Question about Quadradrive ??
 

As far as I know, Quadradrive doesn't have the ability to lock the axles
together, which is what you really need in a situation like you describe.

Earle

"James Nipper" <jnipper@nospam.fdn.com> wrote in message
news:gu-cnaxdO4rWwaiiXTWJig@comcast.com...
>
>
>
>
>
> I have a 2000 Jeep Grand Cherokee, with Quadradrive. (Please note that
this
> is not the same as Quadratec).
>
> I like the Quadradrive, and it does well in mud , ice, and snow. But I do
> have a performance question.
>
> I built a gravel connecting driveway at our mountain place. At the
point
> where this driveway connects to the main driveway, the grade is about 25
> degrees ( this is approximate). At times, I like to **park** on this
> grade, to get this vehicle off of the main drive, and allow other vehicles
> to pass on to the front of our house. To **unpark**, I like to backup,
so
> that I am now back on the main driveway.
>
> When I try to back up on this 25 degree grade, my rear wheels will just
sit
> there and spin. The front wheels do nothing. I **cannot** back up at
> all !!! I have to move forward, go down a 200 foot driveway, turn
> around, and come UP the drive. The vehicle goes UP ok, because I have
> forward momentum.
>
> Considering that I have full-time 4 wheel drive, I thought that this
> Quadradrive system would "sense" when one wheel is slipping, and deliver
> power to the other wheels (e.g., the front wheels).
>
> I also have an old, 1980 CJ-5. Of course , that old fart will back
up
> on this same spot, and almost anywhere else. It don't have no fancy
> Quadradrive or any such stuff. It is just 4 wheel drive.
>
> Are we advancing that much in these 4X4 systems ?? Am I missing
> something here -- a technique or something that I have overlooked ??
>
>
> Again, I feel that I have super performance in snow, ice, and mud. But
> there again, that is while I am already MOVING. My current query is
> why I cannot **backup** on a 25 degree grade, if all 4 wheels have
> traction-- why do only two of them (the rear 2) spin ???
>
> Thanks for any comments or advice !!
>
> --James--
>
>
>
>

Re: Question about Quadradrive ??
 

Earle Horton wrote:
> As far as I know, Quadradrive doesn't have the ability to lock the axles
> together, which is what you really need in a situation like you describe.

Try 4-Lo instead of 4-Hi.
The 95 and on Quadratracks locked in this mode
it's possible the Quadradrive does as well.

--
DougW

Re: Question about Quadradrive ??
 

According to quadrive advertising, if the rear wheels loose traction, power
should be routed to the wheels with the most traction, in this case the
front wheels. I can feel the quadrive kick in when I start to spin in
gravel, however I have never tried it in reverse. Maybe the quadrive does
not work in reverse which does not make sense. Check with your dealer and
see what they have to say about it. Let us know what your dealer says.

Yes both axles on the quadrive do lock in 4 lo. I have tried mine.


"Earle Horton" <enfermero_diabolico@registerednurses.com> wrote in message
news:bh42od$u3in9$1@ID-147790.news.uni-berlin.de...
> As far as I know, Quadradrive doesn't have the ability to lock the axles
> together, which is what you really need in a situation like you describe.
>
> Earle
>
> "James Nipper" <jnipper@nospam.fdn.com> wrote in message
> news:gu-cnaxdO4rWwaiiXTWJig@comcast.com...
> >
> >
> >
> >
> >
> > I have a 2000 Jeep Grand Cherokee, with Quadradrive. (Please note that
> this
> > is not the same as Quadratec).
> >
> > I like the Quadradrive, and it does well in mud , ice, and snow. But I
do
> > have a performance question.
> >
> > I built a gravel connecting driveway at our mountain place. At the
> point
> > where this driveway connects to the main driveway, the grade is about
25
> > degrees ( this is approximate). At times, I like to **park** on
this
> > grade, to get this vehicle off of the main drive, and allow other
vehicles
> > to pass on to the front of our house. To **unpark**, I like to
backup,
> so
> > that I am now back on the main driveway.
> >
> > When I try to back up on this 25 degree grade, my rear wheels will just
> sit
> > there and spin. The front wheels do nothing. I **cannot** back up
at
> > all !!! I have to move forward, go down a 200 foot driveway, turn
> > around, and come UP the drive. The vehicle goes UP ok, because I have
> > forward momentum.
> >
> > Considering that I have full-time 4 wheel drive, I thought that this
> > Quadradrive system would "sense" when one wheel is slipping, and deliver
> > power to the other wheels (e.g., the front wheels).
> >
> > I also have an old, 1980 CJ-5. Of course , that old fart will
back
> up
> > on this same spot, and almost anywhere else. It don't have no fancy
> > Quadradrive or any such stuff. It is just 4 wheel drive.
> >
> > Are we advancing that much in these 4X4 systems ?? Am I missing
> > something here -- a technique or something that I have overlooked ??
> >
> >
> > Again, I feel that I have super performance in snow, ice, and mud.
But
> > there again, that is while I am already MOVING. My current query
is
> > why I cannot **backup** on a 25 degree grade, if all 4 wheels have
> > traction-- why do only two of them (the rear 2) spin ???
> >
> > Thanks for any comments or advice !!
> >
> > --James--
> >
> >
> >
> >
>
>

Re: Question about Quadradrive ??
 

The QuadraDrive should be able to "lock" the front differential, the rear
differential and the center differential whenever there is a need. This is
in theory... In the real world, I think there are no substitute for real
lockers. In my Grand Cherokee, I've experienced that it works as long as
there is not TOO MUCH force to be exerted (it can't get a tire
airborne)...kind of like a bit more than a very good limited slip
differential.
In your case, it looks like it's failing to lock the center differential and
therefore the front tires are not getting the torque.
To actually (mechanically) lock the center differential, put it in 4-Lo and
it will work just as your CJ-5.

- Pablo

1981 CJ-7 Laredo 360 V8
2000 WJ Laredo QD V8
2003 TJ Rubicon

"James Nipper" <jnipper@nospam.fdn.com> wrote in message
news:gu-cnaxdO4rWwaiiXTWJig@comcast.com...
>
>
>
>
>
> I have a 2000 Jeep Grand Cherokee, with Quadradrive. (Please note that
this
> is not the same as Quadratec).
>
> I like the Quadradrive, and it does well in mud , ice, and snow. But I do
> have a performance question.
>
> I built a gravel connecting driveway at our mountain place. At the
point
> where this driveway connects to the main driveway, the grade is about 25
> degrees ( this is approximate). At times, I like to **park** on this
> grade, to get this vehicle off of the main drive, and allow other vehicles
> to pass on to the front of our house. To **unpark**, I like to backup,
so
> that I am now back on the main driveway.
>
> When I try to back up on this 25 degree grade, my rear wheels will just
sit
> there and spin. The front wheels do nothing. I **cannot** back up at
> all !!! I have to move forward, go down a 200 foot driveway, turn
> around, and come UP the drive. The vehicle goes UP ok, because I have
> forward momentum.
>
> Considering that I have full-time 4 wheel drive, I thought that this
> Quadradrive system would "sense" when one wheel is slipping, and deliver
> power to the other wheels (e.g., the front wheels).
>
> I also have an old, 1980 CJ-5. Of course , that old fart will back
up
> on this same spot, and almost anywhere else. It don't have no fancy
> Quadradrive or any such stuff. It is just 4 wheel drive.
>
> Are we advancing that much in these 4X4 systems ?? Am I missing
> something here -- a technique or something that I have overlooked ??
>
>
> Again, I feel that I have super performance in snow, ice, and mud. But
> there again, that is while I am already MOVING. My current query is
> why I cannot **backup** on a 25 degree grade, if all 4 wheels have
> traction-- why do only two of them (the rear 2) spin ???
>
> Thanks for any comments or advice !!
>
> --James--
>
>
>
>

Re: Question about Quadradrive ??
 

"James Nipper" <jnipper@nospam.fdn.com> wrote in message
news:RECdnQYAEMfRLaiiXTWJgA@comcast.com...
>
>
> Thanks for the nice replies. The idea to shift to low range
> **seems**
> good, but as I recall, you have to be --moving-- forward very slowly in
> order to shift to low range. If I am parked, I don't think that I can
> shift to low range. Is that not correct ??
>
Probably so. It all depends on what alignment the gears are in when you are
parked. This of course is different each time you park, and that is why the
user's manual suggests that you be moving to shift to low range. Can you
shift into low range before you park?

Earle

Re: Question about Quadradrive ??
 

This may be a good idea to try-- shifting into low range as I park in this
position..

Thanks again !!

--James--

----------------------------------------------------

>
> Thanks for the nice replies. The idea to shift to low range
> **seems**
> good, but as I recall, you have to be --moving-- forward very slowly in
> order to shift to low range. If I am parked, I don't think that I can
> shift to low range. Is that not correct ??
>
Probably so. It all depends on what alignment the gears are in when you are
parked. This of course is different each time you park, and that is why the
user's manual suggests that you be moving to shift to low range. Can you
shift into low range before you park?

Earle

Re: Question about Quadradrive ??
 

Yeah that's a problem... you have to be moving at about 4 mph to shift to
4-Lo. Anyway, you should check with the dealer why the center differential
is not locking at all.

--
- Pablo

1981 CJ-7 Laredo 360 V8
2000 WJ Laredo QD V8
2003 TJ Rubicon

"Earle Horton" <enfermero_diabolico@registerednurses.com> wrote in message
news:bh4bpk$tmqtp$1@ID-147790.news.uni-berlin.de...
> "James Nipper" <jnipper@nospam.fdn.com> wrote in message
> news:RECdnQYAEMfRLaiiXTWJgA@comcast.com...
> >
> >
> > Thanks for the nice replies. The idea to shift to low range
> > **seems**
> > good, but as I recall, you have to be --moving-- forward very slowly
in
> > order to shift to low range. If I am parked, I don't think that I can
> > shift to low range. Is that not correct ??
> >
> Probably so. It all depends on what alignment the gears are in when you
are
> parked. This of course is different each time you park, and that is why
the
> user's manual suggests that you be moving to shift to low range. Can you
> shift into low range before you park?
>
> Earle
>
>
>