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Old 04-05-2014, 11:23 AM   #1
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Question Limited Slip Question

I was told when I bought my jeep that 2-3 clicks of the emergency brake would allow for enough resistance to make the rear end act as a "locker"

Any truth to this?


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Old 04-05-2014, 12:36 PM   #2
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Old school trick but I wouldn't do it.

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Old 04-05-2014, 12:46 PM   #3
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I'd want to hear the rationale upon which that is based before simply guffawing heartily in the face of whoever is trying to sell the idea.
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Old 04-05-2014, 12:57 PM   #4
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not sure on the JK, but on the xj or tj with the factory trac lock.. yes it would help it get a tiny bit more traction with 2 or so click of the hand brake.
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Old 04-05-2014, 01:02 PM   #5
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Why not do it ??? That little resistance from the E-Brake is to get the phony Brake Lock differential to operate....Try it and see if it works !
I say "phony" because with the money and engineering MOPAR spent on that system, they could have installed a Posi-Traction that actually works...
Just my opinion.... "BH"
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Old 04-05-2014, 01:03 PM   #6
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Not at all the same thing. I would definately not do this with disc brakes, on drum brakes the cable operates the same pads as the brake pedal so I'd be less worried about damaging them. Disc brake parking brake system (in my experience) will not put up with this type of abuse for long.
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Old 04-05-2014, 01:16 PM   #7
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The e-brake system isn't designed for that type of operation so I wouldn't do it if I had a JK without lockers. If you need lockers there are good aftermarket lockers out there.
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Old 04-05-2014, 01:23 PM   #8
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This is an old school trick for open differentials. The Electronic Brake Lock Differential does the same thing for you, only it's controlled by the computer.

Mike
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Old 04-05-2014, 02:20 PM   #9
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Quote:
Originally Posted by onetraveller View Post
This is an old school trick for open differentials. The Electronic Brake Lock Differential does the same thing for you, only it's controlled by the computer.

Mike
^This,I love how the rubicon owners try to act like it will damage your jeep lol.
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Old 04-05-2014, 02:23 PM   #10
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mmm im pretty sure all ur going to do is wear out ur e brake. But I hope you have fun doing it!
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Old 04-05-2014, 02:37 PM   #11
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Originally Posted by Pittsburghwrangler View Post
mmm im pretty sure all ur going to do is wear out ur e brake. But I hope you have fun doing it!
You would use it in the same sense that you would use the lockers. It should be rare and only used when 100% needed. Even if you double the wear on your pads still cheaper then a LSD or locker.
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Old 04-05-2014, 03:02 PM   #12
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Originally Posted by Pittsburghwrangler View Post
mmm im pretty sure all ur going to do is wear out ur e brake. But I hope you have fun doing it!
On older vehicles it's he way to go, however all JKs do it automatically. This has nothing to do with LSD.
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Old 04-05-2014, 03:20 PM   #13
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Quote:
Originally Posted by mcgeo99 View Post
I was told when I bought my jeep that 2-3 clicks of the emergency brake would allow for enough resistance to make the rear end act as a "locker"

Any truth to this?


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I see guys do it on the 90's Cherokees and it never really seems to help them when they need it to! On the 12+ JK's I have seen with LSD they do pretty good and I wouldnt use the E brake like that.

Your better off replacing the LSD with a selectable locker(either ARB Air Locker or Eaton E-Locker) if you think its going to be an issue

Since you have a manual transmission you could go with an Auto locker like a Detroit for about $600.
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Old 04-05-2014, 05:08 PM   #14
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Originally Posted by RMackner View Post
^This,I love how the rubicon owners try to act like it will damage your jeep lol.
We have to justify spending the extra $.
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Old 04-05-2014, 11:26 PM   #15
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Quote:
Originally Posted by onetraveller View Post
This is an old school trick for open differentials. The Electronic Brake Lock Differential does the same thing for you, only it's controlled by the computer.

Mike
Quote:
Originally Posted by daggo66 View Post
On older vehicles it's he way to go, however all JKs do it automatically. This has nothing to do with LSD.
Exactly what they said....

It is just an old school form of BLD.
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Old 04-06-2014, 03:32 AM   #16
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News - TeraFlex Tech: Open vs Locked Differentials | TeraFlex Suspensions

This video gives a good explanation for several of these points
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Old 04-06-2014, 11:45 AM   #17
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That has got to be the CORNIEST help video I've ever seen...besides ones they made us watch in school...
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Old 04-06-2014, 12:06 PM   #18
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That it is but it does touch on the topic
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Old 04-06-2014, 12:15 PM   #19
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It confirmed my suspicions so I'm a bit more well informed.....now what happens when you add Wrangler's Trac-Loc to the scenario?
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Old 04-06-2014, 12:28 PM   #20
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It confirmed my suspicions so I'm a bit more well informed.....now what happens when you add Wrangler's Trac-Loc to the scenario?
That TF video shows you on film what happens and they mention it a little less than halfway through the video. They specifically mention Trac Lok and show you the rear wheels and what happens. Granted the video as a whole is painful to watch, it does cover this as far as it can be covered without being even more boring.

The emergency brake can be used in a very few scenarios, but it does work with Trac Loc. Old school or not it works with an open differential and Trac Loc.
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Old 04-06-2014, 12:53 PM   #21
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The E brake trick does actually work when in a situation where one drive wheel has little or no traction and just spins. when you load it just a little with the E brake it will stop the spin and transfer some torque to the wheel with traction. this just might get you moving then release the brake and go on your way this is old school but then so am I,I used it more than once back in the fifty's to get the old Ford moving in the snow .
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Old 04-06-2014, 04:22 PM   #22
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yes it will work and no it will not harm anyhting--infact that is what the Brake lock system does--but not with the E-brake it uses the pads on all four wheels (if you have disk brakes --shoes if you have drum brakes on the rear). It is another tool for your tool box if you are tight situation and nothing else is work. It has to work as long as your brakes will hold the wheel with the least traction --keep it from spinning before the wheel with traction turns---once the jeep starts moving then release the brake since it is holding back on both wheels.

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