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-   -   limited slip differential (https://www.jeepscanada.com/jeep-mailing-list-32/limited-slip-differential-19979/)

j.lef 08-27-2004 04:38 PM

limited slip differential
 
Pricing out on edmunds my car. What exactly does the limited
slip differential option do on a jeep, and is it preferable to have it? I
will be getting the full time 4wd liberty when I order.


Much regards Jerry



L.W.(=?iso-8859-1?Q?=DFill?=) Hughes III 08-27-2004 04:41 PM

Re: limited slip differential
 
http://auto.howstuffworks.com/differential8.htm
God Bless America, ßill O|||||||O
mailto:-------------------- http://www.----------.com/

"j.lef" wrote:
>
> Pricing out on edmunds my car. What exactly does the limited
> slip differential option do on a jeep, and is it preferable to have it? I
> will be getting the full time 4wd liberty when I order.
>
> Much regards Jerry


L.W.(=?iso-8859-1?Q?=DFill?=) Hughes III 08-27-2004 04:41 PM

Re: limited slip differential
 
http://auto.howstuffworks.com/differential8.htm
God Bless America, ßill O|||||||O
mailto:-------------------- http://www.----------.com/

"j.lef" wrote:
>
> Pricing out on edmunds my car. What exactly does the limited
> slip differential option do on a jeep, and is it preferable to have it? I
> will be getting the full time 4wd liberty when I order.
>
> Much regards Jerry


L.W.(=?iso-8859-1?Q?=DFill?=) Hughes III 08-27-2004 04:41 PM

Re: limited slip differential
 
http://auto.howstuffworks.com/differential8.htm
God Bless America, ßill O|||||||O
mailto:-------------------- http://www.----------.com/

"j.lef" wrote:
>
> Pricing out on edmunds my car. What exactly does the limited
> slip differential option do on a jeep, and is it preferable to have it? I
> will be getting the full time 4wd liberty when I order.
>
> Much regards Jerry


Handywired 08-28-2004 03:38 AM

Re: limited slip differential
 

> Pricing out on edmunds my car. What exactly does the limited
>slip differential option do on a jeep, and is it preferable to have it?


Yeah, it's a good thing. It shifts some power to the tire with more traction
when the rear tires have unequal traction. Otherwise, with an open
differential, if you say had one rear tire on an ice patch, and one on dry
pavement, an open differential will literally send all the power to the wheel
with NO traction and you'll sit there spinning...

However the Jeep Traklock is nothing to get too excited about. It's
clutch-based and will wear out. But it'll last 60 or 80K miles and that's
probably about when most people who buy new cars sell 'em anyway (wouldn't know
<g>)...

-jeff

Handywired 08-28-2004 03:38 AM

Re: limited slip differential
 

> Pricing out on edmunds my car. What exactly does the limited
>slip differential option do on a jeep, and is it preferable to have it?


Yeah, it's a good thing. It shifts some power to the tire with more traction
when the rear tires have unequal traction. Otherwise, with an open
differential, if you say had one rear tire on an ice patch, and one on dry
pavement, an open differential will literally send all the power to the wheel
with NO traction and you'll sit there spinning...

However the Jeep Traklock is nothing to get too excited about. It's
clutch-based and will wear out. But it'll last 60 or 80K miles and that's
probably about when most people who buy new cars sell 'em anyway (wouldn't know
<g>)...

-jeff

Handywired 08-28-2004 03:38 AM

Re: limited slip differential
 

> Pricing out on edmunds my car. What exactly does the limited
>slip differential option do on a jeep, and is it preferable to have it?


Yeah, it's a good thing. It shifts some power to the tire with more traction
when the rear tires have unequal traction. Otherwise, with an open
differential, if you say had one rear tire on an ice patch, and one on dry
pavement, an open differential will literally send all the power to the wheel
with NO traction and you'll sit there spinning...

However the Jeep Traklock is nothing to get too excited about. It's
clutch-based and will wear out. But it'll last 60 or 80K miles and that's
probably about when most people who buy new cars sell 'em anyway (wouldn't know
<g>)...

-jeff

j.lef 08-28-2004 10:14 AM

Re: limited slip differential
 
>
> Yeah, it's a good thing. It shifts some power to the tire with more

traction
> when the rear tires have unequal traction. Otherwise, with an open
> differential, if you say had one rear tire on an ice patch, and one on dry
> pavement, an open differential will literally send all the power to the

wheel
> with NO traction and you'll sit there spinning...
>
> However the Jeep Traklock is nothing to get too excited about. It's
> clutch-based and will wear out. But it'll last 60 or 80K miles and

that's
> probably about when most people who buy new cars sell 'em anyway (wouldn't

know
> <g>)...
>
> -jeff


But if your are driving in full time 4wd,
would that situation occur to begin with? Sorry for not completely
understanding. I understand what the effect of lsd does on a rear or front
wheel drive, but how does it effect a jeep using part time or full time four
wheel drive?

Much
regards Jerry



j.lef 08-28-2004 10:14 AM

Re: limited slip differential
 
>
> Yeah, it's a good thing. It shifts some power to the tire with more

traction
> when the rear tires have unequal traction. Otherwise, with an open
> differential, if you say had one rear tire on an ice patch, and one on dry
> pavement, an open differential will literally send all the power to the

wheel
> with NO traction and you'll sit there spinning...
>
> However the Jeep Traklock is nothing to get too excited about. It's
> clutch-based and will wear out. But it'll last 60 or 80K miles and

that's
> probably about when most people who buy new cars sell 'em anyway (wouldn't

know
> <g>)...
>
> -jeff


But if your are driving in full time 4wd,
would that situation occur to begin with? Sorry for not completely
understanding. I understand what the effect of lsd does on a rear or front
wheel drive, but how does it effect a jeep using part time or full time four
wheel drive?

Much
regards Jerry



j.lef 08-28-2004 10:14 AM

Re: limited slip differential
 
>
> Yeah, it's a good thing. It shifts some power to the tire with more

traction
> when the rear tires have unequal traction. Otherwise, with an open
> differential, if you say had one rear tire on an ice patch, and one on dry
> pavement, an open differential will literally send all the power to the

wheel
> with NO traction and you'll sit there spinning...
>
> However the Jeep Traklock is nothing to get too excited about. It's
> clutch-based and will wear out. But it'll last 60 or 80K miles and

that's
> probably about when most people who buy new cars sell 'em anyway (wouldn't

know
> <g>)...
>
> -jeff


But if your are driving in full time 4wd,
would that situation occur to begin with? Sorry for not completely
understanding. I understand what the effect of lsd does on a rear or front
wheel drive, but how does it effect a jeep using part time or full time four
wheel drive?

Much
regards Jerry



twaldron 08-28-2004 10:43 AM

Re: limited slip differential
 


j.lef wrote:

>>Yeah, it's a good thing. It shifts some power to the tire with more

>
> traction
>
>>when the rear tires have unequal traction. Otherwise, with an open
>>differential, if you say had one rear tire on an ice patch, and one on dry
>>pavement, an open differential will literally send all the power to the

>
> wheel
>
>>with NO traction and you'll sit there spinning...
>>
>>However the Jeep Traklock is nothing to get too excited about. It's
>>clutch-based and will wear out. But it'll last 60 or 80K miles and

>
> that's
>
>>probably about when most people who buy new cars sell 'em anyway (wouldn't

>
> know
>
>><g>)...
>>
>>-jeff

>
>
> But if your are driving in full time 4wd,
> would that situation occur to begin with? Sorry for not completely
> understanding. I understand what the effect of lsd does on a rear or front
> wheel drive, but how does it effect a jeep using part time or full time four
> wheel drive?
>
> Much
> regards Jerry


It affects it less, Jerry, but you have to agree that the more tires you
have with traction, the better.

--
__________________________________________________ _________
tw

03 TJ Rubicon - Rubicon Express 4.5"
01 XJ Sport

There is a very fine line between "hobby" and "mental illness."
-- Dave Barry

Pronunciation: 'jEp
Function: noun
Date: 1940

Etymology: from g. p. (G= 'Government' P= '80 inch wheelbase')
A small general-purpose motor vehicle with 80-inch wheelbase,
1/4-ton capacity, and four-wheel drive used by the U.S. army in
World War II.

(Please remove the OBVIOUS to reply by email)
__________________________________________________ _________


twaldron 08-28-2004 10:43 AM

Re: limited slip differential
 


j.lef wrote:

>>Yeah, it's a good thing. It shifts some power to the tire with more

>
> traction
>
>>when the rear tires have unequal traction. Otherwise, with an open
>>differential, if you say had one rear tire on an ice patch, and one on dry
>>pavement, an open differential will literally send all the power to the

>
> wheel
>
>>with NO traction and you'll sit there spinning...
>>
>>However the Jeep Traklock is nothing to get too excited about. It's
>>clutch-based and will wear out. But it'll last 60 or 80K miles and

>
> that's
>
>>probably about when most people who buy new cars sell 'em anyway (wouldn't

>
> know
>
>><g>)...
>>
>>-jeff

>
>
> But if your are driving in full time 4wd,
> would that situation occur to begin with? Sorry for not completely
> understanding. I understand what the effect of lsd does on a rear or front
> wheel drive, but how does it effect a jeep using part time or full time four
> wheel drive?
>
> Much
> regards Jerry


It affects it less, Jerry, but you have to agree that the more tires you
have with traction, the better.

--
__________________________________________________ _________
tw

03 TJ Rubicon - Rubicon Express 4.5"
01 XJ Sport

There is a very fine line between "hobby" and "mental illness."
-- Dave Barry

Pronunciation: 'jEp
Function: noun
Date: 1940

Etymology: from g. p. (G= 'Government' P= '80 inch wheelbase')
A small general-purpose motor vehicle with 80-inch wheelbase,
1/4-ton capacity, and four-wheel drive used by the U.S. army in
World War II.

(Please remove the OBVIOUS to reply by email)
__________________________________________________ _________


twaldron 08-28-2004 10:43 AM

Re: limited slip differential
 


j.lef wrote:

>>Yeah, it's a good thing. It shifts some power to the tire with more

>
> traction
>
>>when the rear tires have unequal traction. Otherwise, with an open
>>differential, if you say had one rear tire on an ice patch, and one on dry
>>pavement, an open differential will literally send all the power to the

>
> wheel
>
>>with NO traction and you'll sit there spinning...
>>
>>However the Jeep Traklock is nothing to get too excited about. It's
>>clutch-based and will wear out. But it'll last 60 or 80K miles and

>
> that's
>
>>probably about when most people who buy new cars sell 'em anyway (wouldn't

>
> know
>
>><g>)...
>>
>>-jeff

>
>
> But if your are driving in full time 4wd,
> would that situation occur to begin with? Sorry for not completely
> understanding. I understand what the effect of lsd does on a rear or front
> wheel drive, but how does it effect a jeep using part time or full time four
> wheel drive?
>
> Much
> regards Jerry


It affects it less, Jerry, but you have to agree that the more tires you
have with traction, the better.

--
__________________________________________________ _________
tw

03 TJ Rubicon - Rubicon Express 4.5"
01 XJ Sport

There is a very fine line between "hobby" and "mental illness."
-- Dave Barry

Pronunciation: 'jEp
Function: noun
Date: 1940

Etymology: from g. p. (G= 'Government' P= '80 inch wheelbase')
A small general-purpose motor vehicle with 80-inch wheelbase,
1/4-ton capacity, and four-wheel drive used by the U.S. army in
World War II.

(Please remove the OBVIOUS to reply by email)
__________________________________________________ _________


Jerry Bransford 08-28-2004 12:58 PM

Re: limited slip differential
 
One thing a limited slip differential does 'not' do is shift power to one
side or the other. All it does is couple the spinning side to the
non-spinning side a little via its clutch pack so the resistance of the tire
with better traction allows more torque to be sent to both tires. Both
tires always, always, ALWAYS see exactly 50% of the torque sent to the rear
axle by the engine. It's just that when one tire starts spinning on an open
differential, the engine only sees the resistance of the spinning tire so it
develops very little torque and thus very little torque gets provided to the
tire that still has good traction. The more resistance the engine sees, the
more torque it develops... so when the LSD couples the spinning tire to the
tire that is not spinning, it sees more resistance and thus develops more
torque... which gives the tire with more traction more power so it gets you
going again. This is why stepping on the brakes a little when you're stuck,
or pulling the parking brake on a little if it's a rear tire that is
spinning, will often get you moving again since it provides more resistance
for the engine to work into which raises the amount of torque being sent to
both tires.

So when one tire is spinning, it's not that the differential is sending
"all" of the power to the spinning tire... it's really sending a 50:50 split
to both sides... but with one tire spinning, the engine sees so little
resistance that very little torque is developed and when that very little
torque is split 50:50 to both sides, the side with traction isn't getting
enough torque to move the vehicle... thus you're stuck.

The fact that both tires always see 50% of the 'available' torque, no matter
if it's equipped with a locker, LSD, or just an open axle is the hardest
thing for most people to understand. It's just how much torque is really
available to those tires that determine if you're going to be able to move
or not. :)

Jerry
--
--
Jerry Bransford
PP-ASEL N6TAY
See the Geezer Jeep at
http://members.cox.net/jerrypb/
"Handywired" <handywired@aol.com> wrote in message
news:20040828033849.19087.00004249@mb-m06.aol.com...
>
>> Pricing out on edmunds my car. What exactly does the
>> limited
>>slip differential option do on a jeep, and is it preferable to have it?

>
> Yeah, it's a good thing. It shifts some power to the tire with more
> traction
> when the rear tires have unequal traction. Otherwise, with an open
> differential, if you say had one rear tire on an ice patch, and one on dry
> pavement, an open differential will literally send all the power to the
> wheel
> with NO traction and you'll sit there spinning...
>
> However the Jeep Traklock is nothing to get too excited about. It's
> clutch-based and will wear out. But it'll last 60 or 80K miles and
> that's
> probably about when most people who buy new cars sell 'em anyway (wouldn't
> know
> <g>)...
>
> -jeff




Jerry Bransford 08-28-2004 12:58 PM

Re: limited slip differential
 
One thing a limited slip differential does 'not' do is shift power to one
side or the other. All it does is couple the spinning side to the
non-spinning side a little via its clutch pack so the resistance of the tire
with better traction allows more torque to be sent to both tires. Both
tires always, always, ALWAYS see exactly 50% of the torque sent to the rear
axle by the engine. It's just that when one tire starts spinning on an open
differential, the engine only sees the resistance of the spinning tire so it
develops very little torque and thus very little torque gets provided to the
tire that still has good traction. The more resistance the engine sees, the
more torque it develops... so when the LSD couples the spinning tire to the
tire that is not spinning, it sees more resistance and thus develops more
torque... which gives the tire with more traction more power so it gets you
going again. This is why stepping on the brakes a little when you're stuck,
or pulling the parking brake on a little if it's a rear tire that is
spinning, will often get you moving again since it provides more resistance
for the engine to work into which raises the amount of torque being sent to
both tires.

So when one tire is spinning, it's not that the differential is sending
"all" of the power to the spinning tire... it's really sending a 50:50 split
to both sides... but with one tire spinning, the engine sees so little
resistance that very little torque is developed and when that very little
torque is split 50:50 to both sides, the side with traction isn't getting
enough torque to move the vehicle... thus you're stuck.

The fact that both tires always see 50% of the 'available' torque, no matter
if it's equipped with a locker, LSD, or just an open axle is the hardest
thing for most people to understand. It's just how much torque is really
available to those tires that determine if you're going to be able to move
or not. :)

Jerry
--
--
Jerry Bransford
PP-ASEL N6TAY
See the Geezer Jeep at
http://members.cox.net/jerrypb/
"Handywired" <handywired@aol.com> wrote in message
news:20040828033849.19087.00004249@mb-m06.aol.com...
>
>> Pricing out on edmunds my car. What exactly does the
>> limited
>>slip differential option do on a jeep, and is it preferable to have it?

>
> Yeah, it's a good thing. It shifts some power to the tire with more
> traction
> when the rear tires have unequal traction. Otherwise, with an open
> differential, if you say had one rear tire on an ice patch, and one on dry
> pavement, an open differential will literally send all the power to the
> wheel
> with NO traction and you'll sit there spinning...
>
> However the Jeep Traklock is nothing to get too excited about. It's
> clutch-based and will wear out. But it'll last 60 or 80K miles and
> that's
> probably about when most people who buy new cars sell 'em anyway (wouldn't
> know
> <g>)...
>
> -jeff




Jerry Bransford 08-28-2004 12:58 PM

Re: limited slip differential
 
One thing a limited slip differential does 'not' do is shift power to one
side or the other. All it does is couple the spinning side to the
non-spinning side a little via its clutch pack so the resistance of the tire
with better traction allows more torque to be sent to both tires. Both
tires always, always, ALWAYS see exactly 50% of the torque sent to the rear
axle by the engine. It's just that when one tire starts spinning on an open
differential, the engine only sees the resistance of the spinning tire so it
develops very little torque and thus very little torque gets provided to the
tire that still has good traction. The more resistance the engine sees, the
more torque it develops... so when the LSD couples the spinning tire to the
tire that is not spinning, it sees more resistance and thus develops more
torque... which gives the tire with more traction more power so it gets you
going again. This is why stepping on the brakes a little when you're stuck,
or pulling the parking brake on a little if it's a rear tire that is
spinning, will often get you moving again since it provides more resistance
for the engine to work into which raises the amount of torque being sent to
both tires.

So when one tire is spinning, it's not that the differential is sending
"all" of the power to the spinning tire... it's really sending a 50:50 split
to both sides... but with one tire spinning, the engine sees so little
resistance that very little torque is developed and when that very little
torque is split 50:50 to both sides, the side with traction isn't getting
enough torque to move the vehicle... thus you're stuck.

The fact that both tires always see 50% of the 'available' torque, no matter
if it's equipped with a locker, LSD, or just an open axle is the hardest
thing for most people to understand. It's just how much torque is really
available to those tires that determine if you're going to be able to move
or not. :)

Jerry
--
--
Jerry Bransford
PP-ASEL N6TAY
See the Geezer Jeep at
http://members.cox.net/jerrypb/
"Handywired" <handywired@aol.com> wrote in message
news:20040828033849.19087.00004249@mb-m06.aol.com...
>
>> Pricing out on edmunds my car. What exactly does the
>> limited
>>slip differential option do on a jeep, and is it preferable to have it?

>
> Yeah, it's a good thing. It shifts some power to the tire with more
> traction
> when the rear tires have unequal traction. Otherwise, with an open
> differential, if you say had one rear tire on an ice patch, and one on dry
> pavement, an open differential will literally send all the power to the
> wheel
> with NO traction and you'll sit there spinning...
>
> However the Jeep Traklock is nothing to get too excited about. It's
> clutch-based and will wear out. But it'll last 60 or 80K miles and
> that's
> probably about when most people who buy new cars sell 'em anyway (wouldn't
> know
> <g>)...
>
> -jeff




Stephen R. Conrad 09-26-2004 04:36 PM

Re: limited slip differential
 
Why doesn't the ABS see the spinning tire and try to slow it down by
applying that tire's brake?

"Jerry Bransford" <jerrypb@cox.net> wrote in message
news:yQ2Yc.159033$sh.115904@fed1read06...
> One thing a limited slip differential does 'not' do is shift power to one
> side or the other. All it does is couple the spinning side to the
> non-spinning side a little via its clutch pack so the resistance of the

tire
> with better traction allows more torque to be sent to both tires. Both
> tires always, always, ALWAYS see exactly 50% of the torque sent to the

rear
> axle by the engine. It's just that when one tire starts spinning on an

open
> differential, the engine only sees the resistance of the spinning tire so

it
> develops very little torque and thus very little torque gets provided to

the
> tire that still has good traction. The more resistance the engine sees,

the
> more torque it develops... so when the LSD couples the spinning tire to

the
> tire that is not spinning, it sees more resistance and thus develops more
> torque... which gives the tire with more traction more power so it gets

you
> going again. This is why stepping on the brakes a little when you're

stuck,
> or pulling the parking brake on a little if it's a rear tire that is
> spinning, will often get you moving again since it provides more

resistance
> for the engine to work into which raises the amount of torque being sent

to
> both tires.
>
> So when one tire is spinning, it's not that the differential is sending
> "all" of the power to the spinning tire... it's really sending a 50:50

split
> to both sides... but with one tire spinning, the engine sees so little
> resistance that very little torque is developed and when that very little
> torque is split 50:50 to both sides, the side with traction isn't getting
> enough torque to move the vehicle... thus you're stuck.
>
> The fact that both tires always see 50% of the 'available' torque, no

matter
> if it's equipped with a locker, LSD, or just an open axle is the hardest
> thing for most people to understand. It's just how much torque is really
> available to those tires that determine if you're going to be able to move
> or not. :)
>
> Jerry
> --
> --
> Jerry Bransford
> PP-ASEL N6TAY
> See the Geezer Jeep at
> http://members.cox.net/jerrypb/
> "Handywired" <handywired@aol.com> wrote in message
> news:20040828033849.19087.00004249@mb-m06.aol.com...
> >
> >> Pricing out on edmunds my car. What exactly does the
> >> limited
> >>slip differential option do on a jeep, and is it preferable to have it?

> >
> > Yeah, it's a good thing. It shifts some power to the tire with more
> > traction
> > when the rear tires have unequal traction. Otherwise, with an open
> > differential, if you say had one rear tire on an ice patch, and one on

dry
> > pavement, an open differential will literally send all the power to the
> > wheel
> > with NO traction and you'll sit there spinning...
> >
> > However the Jeep Traklock is nothing to get too excited about. It's
> > clutch-based and will wear out. But it'll last 60 or 80K miles and
> > that's
> > probably about when most people who buy new cars sell 'em anyway

(wouldn't
> > know
> > <g>)...
> >
> > -jeff

>
>




Stephen R. Conrad 09-26-2004 04:36 PM

Re: limited slip differential
 
Why doesn't the ABS see the spinning tire and try to slow it down by
applying that tire's brake?

"Jerry Bransford" <jerrypb@cox.net> wrote in message
news:yQ2Yc.159033$sh.115904@fed1read06...
> One thing a limited slip differential does 'not' do is shift power to one
> side or the other. All it does is couple the spinning side to the
> non-spinning side a little via its clutch pack so the resistance of the

tire
> with better traction allows more torque to be sent to both tires. Both
> tires always, always, ALWAYS see exactly 50% of the torque sent to the

rear
> axle by the engine. It's just that when one tire starts spinning on an

open
> differential, the engine only sees the resistance of the spinning tire so

it
> develops very little torque and thus very little torque gets provided to

the
> tire that still has good traction. The more resistance the engine sees,

the
> more torque it develops... so when the LSD couples the spinning tire to

the
> tire that is not spinning, it sees more resistance and thus develops more
> torque... which gives the tire with more traction more power so it gets

you
> going again. This is why stepping on the brakes a little when you're

stuck,
> or pulling the parking brake on a little if it's a rear tire that is
> spinning, will often get you moving again since it provides more

resistance
> for the engine to work into which raises the amount of torque being sent

to
> both tires.
>
> So when one tire is spinning, it's not that the differential is sending
> "all" of the power to the spinning tire... it's really sending a 50:50

split
> to both sides... but with one tire spinning, the engine sees so little
> resistance that very little torque is developed and when that very little
> torque is split 50:50 to both sides, the side with traction isn't getting
> enough torque to move the vehicle... thus you're stuck.
>
> The fact that both tires always see 50% of the 'available' torque, no

matter
> if it's equipped with a locker, LSD, or just an open axle is the hardest
> thing for most people to understand. It's just how much torque is really
> available to those tires that determine if you're going to be able to move
> or not. :)
>
> Jerry
> --
> --
> Jerry Bransford
> PP-ASEL N6TAY
> See the Geezer Jeep at
> http://members.cox.net/jerrypb/
> "Handywired" <handywired@aol.com> wrote in message
> news:20040828033849.19087.00004249@mb-m06.aol.com...
> >
> >> Pricing out on edmunds my car. What exactly does the
> >> limited
> >>slip differential option do on a jeep, and is it preferable to have it?

> >
> > Yeah, it's a good thing. It shifts some power to the tire with more
> > traction
> > when the rear tires have unequal traction. Otherwise, with an open
> > differential, if you say had one rear tire on an ice patch, and one on

dry
> > pavement, an open differential will literally send all the power to the
> > wheel
> > with NO traction and you'll sit there spinning...
> >
> > However the Jeep Traklock is nothing to get too excited about. It's
> > clutch-based and will wear out. But it'll last 60 or 80K miles and
> > that's
> > probably about when most people who buy new cars sell 'em anyway

(wouldn't
> > know
> > <g>)...
> >
> > -jeff

>
>




Stephen R. Conrad 09-26-2004 04:36 PM

Re: limited slip differential
 
Why doesn't the ABS see the spinning tire and try to slow it down by
applying that tire's brake?

"Jerry Bransford" <jerrypb@cox.net> wrote in message
news:yQ2Yc.159033$sh.115904@fed1read06...
> One thing a limited slip differential does 'not' do is shift power to one
> side or the other. All it does is couple the spinning side to the
> non-spinning side a little via its clutch pack so the resistance of the

tire
> with better traction allows more torque to be sent to both tires. Both
> tires always, always, ALWAYS see exactly 50% of the torque sent to the

rear
> axle by the engine. It's just that when one tire starts spinning on an

open
> differential, the engine only sees the resistance of the spinning tire so

it
> develops very little torque and thus very little torque gets provided to

the
> tire that still has good traction. The more resistance the engine sees,

the
> more torque it develops... so when the LSD couples the spinning tire to

the
> tire that is not spinning, it sees more resistance and thus develops more
> torque... which gives the tire with more traction more power so it gets

you
> going again. This is why stepping on the brakes a little when you're

stuck,
> or pulling the parking brake on a little if it's a rear tire that is
> spinning, will often get you moving again since it provides more

resistance
> for the engine to work into which raises the amount of torque being sent

to
> both tires.
>
> So when one tire is spinning, it's not that the differential is sending
> "all" of the power to the spinning tire... it's really sending a 50:50

split
> to both sides... but with one tire spinning, the engine sees so little
> resistance that very little torque is developed and when that very little
> torque is split 50:50 to both sides, the side with traction isn't getting
> enough torque to move the vehicle... thus you're stuck.
>
> The fact that both tires always see 50% of the 'available' torque, no

matter
> if it's equipped with a locker, LSD, or just an open axle is the hardest
> thing for most people to understand. It's just how much torque is really
> available to those tires that determine if you're going to be able to move
> or not. :)
>
> Jerry
> --
> --
> Jerry Bransford
> PP-ASEL N6TAY
> See the Geezer Jeep at
> http://members.cox.net/jerrypb/
> "Handywired" <handywired@aol.com> wrote in message
> news:20040828033849.19087.00004249@mb-m06.aol.com...
> >
> >> Pricing out on edmunds my car. What exactly does the
> >> limited
> >>slip differential option do on a jeep, and is it preferable to have it?

> >
> > Yeah, it's a good thing. It shifts some power to the tire with more
> > traction
> > when the rear tires have unequal traction. Otherwise, with an open
> > differential, if you say had one rear tire on an ice patch, and one on

dry
> > pavement, an open differential will literally send all the power to the
> > wheel
> > with NO traction and you'll sit there spinning...
> >
> > However the Jeep Traklock is nothing to get too excited about. It's
> > clutch-based and will wear out. But it'll last 60 or 80K miles and
> > that's
> > probably about when most people who buy new cars sell 'em anyway

(wouldn't
> > know
> > <g>)...
> >
> > -jeff

>
>




Jo Bo 09-26-2004 04:48 PM

Re: limited slip differential
 

"Stephen R. Conrad" <sconrad@telecommunity.to> wrote in message
news:2ronnfF1cpl9sU1@uni-berlin.de...
> Why doesn't the ABS see the spinning tire and try to slow it down by
> applying that tire's brake?


That would be "traction control".

JoBo

> "Jerry Bransford" <jerrypb@cox.net> wrote in message
> news:yQ2Yc.159033$sh.115904@fed1read06...
> > One thing a limited slip differential does 'not' do is shift power to

one
> > side or the other. All it does is couple the spinning side to the
> > non-spinning side a little via its clutch pack so the resistance of the

> tire
> > with better traction allows more torque to be sent to both tires. Both
> > tires always, always, ALWAYS see exactly 50% of the torque sent to the

> rear
> > axle by the engine. It's just that when one tire starts spinning on an

> open
> > differential, the engine only sees the resistance of the spinning tire

so
> it
> > develops very little torque and thus very little torque gets provided to

> the
> > tire that still has good traction. The more resistance the engine sees,

> the
> > more torque it develops... so when the LSD couples the spinning tire to

> the
> > tire that is not spinning, it sees more resistance and thus develops

more
> > torque... which gives the tire with more traction more power so it gets

> you
> > going again. This is why stepping on the brakes a little when you're

> stuck,
> > or pulling the parking brake on a little if it's a rear tire that is
> > spinning, will often get you moving again since it provides more

> resistance
> > for the engine to work into which raises the amount of torque being sent

> to
> > both tires.
> >
> > So when one tire is spinning, it's not that the differential is sending
> > "all" of the power to the spinning tire... it's really sending a 50:50

> split
> > to both sides... but with one tire spinning, the engine sees so little
> > resistance that very little torque is developed and when that very

little
> > torque is split 50:50 to both sides, the side with traction isn't

getting
> > enough torque to move the vehicle... thus you're stuck.
> >
> > The fact that both tires always see 50% of the 'available' torque, no

> matter
> > if it's equipped with a locker, LSD, or just an open axle is the hardest
> > thing for most people to understand. It's just how much torque is

really
> > available to those tires that determine if you're going to be able to

move
> > or not. :)
> >
> > Jerry
> > --
> > --
> > Jerry Bransford
> > PP-ASEL N6TAY
> > See the Geezer Jeep at
> > http://members.cox.net/jerrypb/
> > "Handywired" <handywired@aol.com> wrote in message
> > news:20040828033849.19087.00004249@mb-m06.aol.com...
> > >
> > >> Pricing out on edmunds my car. What exactly does the
> > >> limited
> > >>slip differential option do on a jeep, and is it preferable to have

it?
> > >
> > > Yeah, it's a good thing. It shifts some power to the tire with more
> > > traction
> > > when the rear tires have unequal traction. Otherwise, with an open
> > > differential, if you say had one rear tire on an ice patch, and one on

> dry
> > > pavement, an open differential will literally send all the power to

the
> > > wheel
> > > with NO traction and you'll sit there spinning...
> > >
> > > However the Jeep Traklock is nothing to get too excited about. It's
> > > clutch-based and will wear out. But it'll last 60 or 80K miles and
> > > that's
> > > probably about when most people who buy new cars sell 'em anyway

> (wouldn't
> > > know
> > > <g>)...
> > >
> > > -jeff

> >
> >

>
>




Jo Bo 09-26-2004 04:48 PM

Re: limited slip differential
 

"Stephen R. Conrad" <sconrad@telecommunity.to> wrote in message
news:2ronnfF1cpl9sU1@uni-berlin.de...
> Why doesn't the ABS see the spinning tire and try to slow it down by
> applying that tire's brake?


That would be "traction control".

JoBo

> "Jerry Bransford" <jerrypb@cox.net> wrote in message
> news:yQ2Yc.159033$sh.115904@fed1read06...
> > One thing a limited slip differential does 'not' do is shift power to

one
> > side or the other. All it does is couple the spinning side to the
> > non-spinning side a little via its clutch pack so the resistance of the

> tire
> > with better traction allows more torque to be sent to both tires. Both
> > tires always, always, ALWAYS see exactly 50% of the torque sent to the

> rear
> > axle by the engine. It's just that when one tire starts spinning on an

> open
> > differential, the engine only sees the resistance of the spinning tire

so
> it
> > develops very little torque and thus very little torque gets provided to

> the
> > tire that still has good traction. The more resistance the engine sees,

> the
> > more torque it develops... so when the LSD couples the spinning tire to

> the
> > tire that is not spinning, it sees more resistance and thus develops

more
> > torque... which gives the tire with more traction more power so it gets

> you
> > going again. This is why stepping on the brakes a little when you're

> stuck,
> > or pulling the parking brake on a little if it's a rear tire that is
> > spinning, will often get you moving again since it provides more

> resistance
> > for the engine to work into which raises the amount of torque being sent

> to
> > both tires.
> >
> > So when one tire is spinning, it's not that the differential is sending
> > "all" of the power to the spinning tire... it's really sending a 50:50

> split
> > to both sides... but with one tire spinning, the engine sees so little
> > resistance that very little torque is developed and when that very

little
> > torque is split 50:50 to both sides, the side with traction isn't

getting
> > enough torque to move the vehicle... thus you're stuck.
> >
> > The fact that both tires always see 50% of the 'available' torque, no

> matter
> > if it's equipped with a locker, LSD, or just an open axle is the hardest
> > thing for most people to understand. It's just how much torque is

really
> > available to those tires that determine if you're going to be able to

move
> > or not. :)
> >
> > Jerry
> > --
> > --
> > Jerry Bransford
> > PP-ASEL N6TAY
> > See the Geezer Jeep at
> > http://members.cox.net/jerrypb/
> > "Handywired" <handywired@aol.com> wrote in message
> > news:20040828033849.19087.00004249@mb-m06.aol.com...
> > >
> > >> Pricing out on edmunds my car. What exactly does the
> > >> limited
> > >>slip differential option do on a jeep, and is it preferable to have

it?
> > >
> > > Yeah, it's a good thing. It shifts some power to the tire with more
> > > traction
> > > when the rear tires have unequal traction. Otherwise, with an open
> > > differential, if you say had one rear tire on an ice patch, and one on

> dry
> > > pavement, an open differential will literally send all the power to

the
> > > wheel
> > > with NO traction and you'll sit there spinning...
> > >
> > > However the Jeep Traklock is nothing to get too excited about. It's
> > > clutch-based and will wear out. But it'll last 60 or 80K miles and
> > > that's
> > > probably about when most people who buy new cars sell 'em anyway

> (wouldn't
> > > know
> > > <g>)...
> > >
> > > -jeff

> >
> >

>
>




Jo Bo 09-26-2004 04:48 PM

Re: limited slip differential
 

"Stephen R. Conrad" <sconrad@telecommunity.to> wrote in message
news:2ronnfF1cpl9sU1@uni-berlin.de...
> Why doesn't the ABS see the spinning tire and try to slow it down by
> applying that tire's brake?


That would be "traction control".

JoBo

> "Jerry Bransford" <jerrypb@cox.net> wrote in message
> news:yQ2Yc.159033$sh.115904@fed1read06...
> > One thing a limited slip differential does 'not' do is shift power to

one
> > side or the other. All it does is couple the spinning side to the
> > non-spinning side a little via its clutch pack so the resistance of the

> tire
> > with better traction allows more torque to be sent to both tires. Both
> > tires always, always, ALWAYS see exactly 50% of the torque sent to the

> rear
> > axle by the engine. It's just that when one tire starts spinning on an

> open
> > differential, the engine only sees the resistance of the spinning tire

so
> it
> > develops very little torque and thus very little torque gets provided to

> the
> > tire that still has good traction. The more resistance the engine sees,

> the
> > more torque it develops... so when the LSD couples the spinning tire to

> the
> > tire that is not spinning, it sees more resistance and thus develops

more
> > torque... which gives the tire with more traction more power so it gets

> you
> > going again. This is why stepping on the brakes a little when you're

> stuck,
> > or pulling the parking brake on a little if it's a rear tire that is
> > spinning, will often get you moving again since it provides more

> resistance
> > for the engine to work into which raises the amount of torque being sent

> to
> > both tires.
> >
> > So when one tire is spinning, it's not that the differential is sending
> > "all" of the power to the spinning tire... it's really sending a 50:50

> split
> > to both sides... but with one tire spinning, the engine sees so little
> > resistance that very little torque is developed and when that very

little
> > torque is split 50:50 to both sides, the side with traction isn't

getting
> > enough torque to move the vehicle... thus you're stuck.
> >
> > The fact that both tires always see 50% of the 'available' torque, no

> matter
> > if it's equipped with a locker, LSD, or just an open axle is the hardest
> > thing for most people to understand. It's just how much torque is

really
> > available to those tires that determine if you're going to be able to

move
> > or not. :)
> >
> > Jerry
> > --
> > --
> > Jerry Bransford
> > PP-ASEL N6TAY
> > See the Geezer Jeep at
> > http://members.cox.net/jerrypb/
> > "Handywired" <handywired@aol.com> wrote in message
> > news:20040828033849.19087.00004249@mb-m06.aol.com...
> > >
> > >> Pricing out on edmunds my car. What exactly does the
> > >> limited
> > >>slip differential option do on a jeep, and is it preferable to have

it?
> > >
> > > Yeah, it's a good thing. It shifts some power to the tire with more
> > > traction
> > > when the rear tires have unequal traction. Otherwise, with an open
> > > differential, if you say had one rear tire on an ice patch, and one on

> dry
> > > pavement, an open differential will literally send all the power to

the
> > > wheel
> > > with NO traction and you'll sit there spinning...
> > >
> > > However the Jeep Traklock is nothing to get too excited about. It's
> > > clutch-based and will wear out. But it'll last 60 or 80K miles and
> > > that's
> > > probably about when most people who buy new cars sell 'em anyway

> (wouldn't
> > > know
> > > <g>)...
> > >
> > > -jeff

> >
> >

>
>




Jerry Bransford 09-26-2004 04:54 PM

Re: limited slip differential
 
ABS doesn't apply brakes, it releases them when it senses a wheel has
stopped spinning from a brake that is locked up. There are other systems
that sense spinning tires and apply the brake to the offending wheel but
they are not ABS systems.

Jerry
--
Jerry Bransford
PP-ASEL N6TAY
See the Geezer Jeep at
http://members.cox.net/jerrypb/
"Stephen R. Conrad" <sconrad@telecommunity.to> wrote in message
news:2ronnfF1cpl9sU1@uni-berlin.de...
> Why doesn't the ABS see the spinning tire and try to slow it down by
> applying that tire's brake?
>
> "Jerry Bransford" <jerrypb@cox.net> wrote in message
> news:yQ2Yc.159033$sh.115904@fed1read06...
>> One thing a limited slip differential does 'not' do is shift power to one
>> side or the other. All it does is couple the spinning side to the
>> non-spinning side a little via its clutch pack so the resistance of the

> tire
>> with better traction allows more torque to be sent to both tires. Both
>> tires always, always, ALWAYS see exactly 50% of the torque sent to the

> rear
>> axle by the engine. It's just that when one tire starts spinning on an

> open
>> differential, the engine only sees the resistance of the spinning tire so

> it
>> develops very little torque and thus very little torque gets provided to

> the
>> tire that still has good traction. The more resistance the engine sees,

> the
>> more torque it develops... so when the LSD couples the spinning tire to

> the
>> tire that is not spinning, it sees more resistance and thus develops more
>> torque... which gives the tire with more traction more power so it gets

> you
>> going again. This is why stepping on the brakes a little when you're

> stuck,
>> or pulling the parking brake on a little if it's a rear tire that is
>> spinning, will often get you moving again since it provides more

> resistance
>> for the engine to work into which raises the amount of torque being sent

> to
>> both tires.
>>
>> So when one tire is spinning, it's not that the differential is sending
>> "all" of the power to the spinning tire... it's really sending a 50:50

> split
>> to both sides... but with one tire spinning, the engine sees so little
>> resistance that very little torque is developed and when that very little
>> torque is split 50:50 to both sides, the side with traction isn't getting
>> enough torque to move the vehicle... thus you're stuck.
>>
>> The fact that both tires always see 50% of the 'available' torque, no

> matter
>> if it's equipped with a locker, LSD, or just an open axle is the hardest
>> thing for most people to understand. It's just how much torque is really
>> available to those tires that determine if you're going to be able to
>> move
>> or not. :)
>>
>> Jerry
>> --
>> --
>> Jerry Bransford
>> PP-ASEL N6TAY
>> See the Geezer Jeep at
>> http://members.cox.net/jerrypb/
>> "Handywired" <handywired@aol.com> wrote in message
>> news:20040828033849.19087.00004249@mb-m06.aol.com...
>> >
>> >> Pricing out on edmunds my car. What exactly does the
>> >> limited
>> >>slip differential option do on a jeep, and is it preferable to have it?
>> >
>> > Yeah, it's a good thing. It shifts some power to the tire with more
>> > traction
>> > when the rear tires have unequal traction. Otherwise, with an open
>> > differential, if you say had one rear tire on an ice patch, and one on

> dry
>> > pavement, an open differential will literally send all the power to the
>> > wheel
>> > with NO traction and you'll sit there spinning...
>> >
>> > However the Jeep Traklock is nothing to get too excited about. It's
>> > clutch-based and will wear out. But it'll last 60 or 80K miles and
>> > that's
>> > probably about when most people who buy new cars sell 'em anyway

> (wouldn't
>> > know
>> > <g>)...
>> >
>> > -jeff

>>
>>

>
>




Jerry Bransford 09-26-2004 04:54 PM

Re: limited slip differential
 
ABS doesn't apply brakes, it releases them when it senses a wheel has
stopped spinning from a brake that is locked up. There are other systems
that sense spinning tires and apply the brake to the offending wheel but
they are not ABS systems.

Jerry
--
Jerry Bransford
PP-ASEL N6TAY
See the Geezer Jeep at
http://members.cox.net/jerrypb/
"Stephen R. Conrad" <sconrad@telecommunity.to> wrote in message
news:2ronnfF1cpl9sU1@uni-berlin.de...
> Why doesn't the ABS see the spinning tire and try to slow it down by
> applying that tire's brake?
>
> "Jerry Bransford" <jerrypb@cox.net> wrote in message
> news:yQ2Yc.159033$sh.115904@fed1read06...
>> One thing a limited slip differential does 'not' do is shift power to one
>> side or the other. All it does is couple the spinning side to the
>> non-spinning side a little via its clutch pack so the resistance of the

> tire
>> with better traction allows more torque to be sent to both tires. Both
>> tires always, always, ALWAYS see exactly 50% of the torque sent to the

> rear
>> axle by the engine. It's just that when one tire starts spinning on an

> open
>> differential, the engine only sees the resistance of the spinning tire so

> it
>> develops very little torque and thus very little torque gets provided to

> the
>> tire that still has good traction. The more resistance the engine sees,

> the
>> more torque it develops... so when the LSD couples the spinning tire to

> the
>> tire that is not spinning, it sees more resistance and thus develops more
>> torque... which gives the tire with more traction more power so it gets

> you
>> going again. This is why stepping on the brakes a little when you're

> stuck,
>> or pulling the parking brake on a little if it's a rear tire that is
>> spinning, will often get you moving again since it provides more

> resistance
>> for the engine to work into which raises the amount of torque being sent

> to
>> both tires.
>>
>> So when one tire is spinning, it's not that the differential is sending
>> "all" of the power to the spinning tire... it's really sending a 50:50

> split
>> to both sides... but with one tire spinning, the engine sees so little
>> resistance that very little torque is developed and when that very little
>> torque is split 50:50 to both sides, the side with traction isn't getting
>> enough torque to move the vehicle... thus you're stuck.
>>
>> The fact that both tires always see 50% of the 'available' torque, no

> matter
>> if it's equipped with a locker, LSD, or just an open axle is the hardest
>> thing for most people to understand. It's just how much torque is really
>> available to those tires that determine if you're going to be able to
>> move
>> or not. :)
>>
>> Jerry
>> --
>> --
>> Jerry Bransford
>> PP-ASEL N6TAY
>> See the Geezer Jeep at
>> http://members.cox.net/jerrypb/
>> "Handywired" <handywired@aol.com> wrote in message
>> news:20040828033849.19087.00004249@mb-m06.aol.com...
>> >
>> >> Pricing out on edmunds my car. What exactly does the
>> >> limited
>> >>slip differential option do on a jeep, and is it preferable to have it?
>> >
>> > Yeah, it's a good thing. It shifts some power to the tire with more
>> > traction
>> > when the rear tires have unequal traction. Otherwise, with an open
>> > differential, if you say had one rear tire on an ice patch, and one on

> dry
>> > pavement, an open differential will literally send all the power to the
>> > wheel
>> > with NO traction and you'll sit there spinning...
>> >
>> > However the Jeep Traklock is nothing to get too excited about. It's
>> > clutch-based and will wear out. But it'll last 60 or 80K miles and
>> > that's
>> > probably about when most people who buy new cars sell 'em anyway

> (wouldn't
>> > know
>> > <g>)...
>> >
>> > -jeff

>>
>>

>
>




Jerry Bransford 09-26-2004 04:54 PM

Re: limited slip differential
 
ABS doesn't apply brakes, it releases them when it senses a wheel has
stopped spinning from a brake that is locked up. There are other systems
that sense spinning tires and apply the brake to the offending wheel but
they are not ABS systems.

Jerry
--
Jerry Bransford
PP-ASEL N6TAY
See the Geezer Jeep at
http://members.cox.net/jerrypb/
"Stephen R. Conrad" <sconrad@telecommunity.to> wrote in message
news:2ronnfF1cpl9sU1@uni-berlin.de...
> Why doesn't the ABS see the spinning tire and try to slow it down by
> applying that tire's brake?
>
> "Jerry Bransford" <jerrypb@cox.net> wrote in message
> news:yQ2Yc.159033$sh.115904@fed1read06...
>> One thing a limited slip differential does 'not' do is shift power to one
>> side or the other. All it does is couple the spinning side to the
>> non-spinning side a little via its clutch pack so the resistance of the

> tire
>> with better traction allows more torque to be sent to both tires. Both
>> tires always, always, ALWAYS see exactly 50% of the torque sent to the

> rear
>> axle by the engine. It's just that when one tire starts spinning on an

> open
>> differential, the engine only sees the resistance of the spinning tire so

> it
>> develops very little torque and thus very little torque gets provided to

> the
>> tire that still has good traction. The more resistance the engine sees,

> the
>> more torque it develops... so when the LSD couples the spinning tire to

> the
>> tire that is not spinning, it sees more resistance and thus develops more
>> torque... which gives the tire with more traction more power so it gets

> you
>> going again. This is why stepping on the brakes a little when you're

> stuck,
>> or pulling the parking brake on a little if it's a rear tire that is
>> spinning, will often get you moving again since it provides more

> resistance
>> for the engine to work into which raises the amount of torque being sent

> to
>> both tires.
>>
>> So when one tire is spinning, it's not that the differential is sending
>> "all" of the power to the spinning tire... it's really sending a 50:50

> split
>> to both sides... but with one tire spinning, the engine sees so little
>> resistance that very little torque is developed and when that very little
>> torque is split 50:50 to both sides, the side with traction isn't getting
>> enough torque to move the vehicle... thus you're stuck.
>>
>> The fact that both tires always see 50% of the 'available' torque, no

> matter
>> if it's equipped with a locker, LSD, or just an open axle is the hardest
>> thing for most people to understand. It's just how much torque is really
>> available to those tires that determine if you're going to be able to
>> move
>> or not. :)
>>
>> Jerry
>> --
>> --
>> Jerry Bransford
>> PP-ASEL N6TAY
>> See the Geezer Jeep at
>> http://members.cox.net/jerrypb/
>> "Handywired" <handywired@aol.com> wrote in message
>> news:20040828033849.19087.00004249@mb-m06.aol.com...
>> >
>> >> Pricing out on edmunds my car. What exactly does the
>> >> limited
>> >>slip differential option do on a jeep, and is it preferable to have it?
>> >
>> > Yeah, it's a good thing. It shifts some power to the tire with more
>> > traction
>> > when the rear tires have unequal traction. Otherwise, with an open
>> > differential, if you say had one rear tire on an ice patch, and one on

> dry
>> > pavement, an open differential will literally send all the power to the
>> > wheel
>> > with NO traction and you'll sit there spinning...
>> >
>> > However the Jeep Traklock is nothing to get too excited about. It's
>> > clutch-based and will wear out. But it'll last 60 or 80K miles and
>> > that's
>> > probably about when most people who buy new cars sell 'em anyway

> (wouldn't
>> > know
>> > <g>)...
>> >
>> > -jeff

>>
>>

>
>




L.W.(=?iso-8859-1?Q?=DFill?=) Hughes III 09-26-2004 05:13 PM

Re: limited slip differential
 
You're thinking of the Traction Control System, found on most rear
wheel drive Fords:
http://www.conti-online.com/generato...system_en.html
God Bless America, ßill O|||||||O
mailto:-------------------- http://www.----------.com/

"Stephen R. Conrad" wrote:
>
> Why doesn't the ABS see the spinning tire and try to slow it down by
> applying that tire's brake?


L.W.(=?iso-8859-1?Q?=DFill?=) Hughes III 09-26-2004 05:13 PM

Re: limited slip differential
 
You're thinking of the Traction Control System, found on most rear
wheel drive Fords:
http://www.conti-online.com/generato...system_en.html
God Bless America, ßill O|||||||O
mailto:-------------------- http://www.----------.com/

"Stephen R. Conrad" wrote:
>
> Why doesn't the ABS see the spinning tire and try to slow it down by
> applying that tire's brake?


L.W.(=?iso-8859-1?Q?=DFill?=) Hughes III 09-26-2004 05:13 PM

Re: limited slip differential
 
You're thinking of the Traction Control System, found on most rear
wheel drive Fords:
http://www.conti-online.com/generato...system_en.html
God Bless America, ßill O|||||||O
mailto:-------------------- http://www.----------.com/

"Stephen R. Conrad" wrote:
>
> Why doesn't the ABS see the spinning tire and try to slow it down by
> applying that tire's brake?



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