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Old 12-22-2010, 05:06 PM   #1
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What exactly are lockers?

Couldn't find it on search.
Can someone please help me out here? Pretty much a noob.

But, what are lockers? What do they do? How do they help? What can happen when you don't have them? Do you need just front or rear? or both?

Thankyou all in advance

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Old 12-22-2010, 05:20 PM   #2
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im a noob too.. but what ive researched is.. they literally "lock" your axle so both wheels spin at the same rate instead of one being able to spin faster. or at least that what ive gotten from researching. correct me if im wrong

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Old 12-22-2010, 05:22 PM   #3
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curious too the axles that I can get to fix the CJ has detroit lockers on them, but didnt know if that was a good thing or not
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Old 12-22-2010, 05:31 PM   #4
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lockers are good if you want to go off roading. theyre good for getting traction up rocks/hills/etc... theyre not too good on the road though from what ive read
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Old 12-22-2010, 05:34 PM   #5
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THe way a stock diff comes is able to allow the 2 wheels to turn at different speeds while applying force to each wheel. (watch the video)

Having a locker holds each axle together (as if there were no spider gears at all). Say your offroading and 1 rear tire comes off the ground (and its floating there) now in 2wd if you hit the gas all the power will go to the wheel thats in the air and the one on the ground won't move. with a locker, all the power would be send to both wheels, allowing the wheel on the ground to push you forward while the wheel in the air is spinning the same speed of the other wheel.

Watch the video at (2:56) and that is like what a locker does

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Old 12-22-2010, 05:38 PM   #6
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yup yup yup, nice to have off road. They come in different controls. Automatic, Electric, Cable or air activated. And they do just that, they lock the axle so both wheels get power reguardless of what they are doing. So going over rocks where one tire is off the ground is not a problem because the other tire is being powered as well. An open diff. (Differential) is one that allows one wheel to spin faster than an other. The problem off road for the open diff is that when one tire is off the ground it will take all the power and spin away, while the one on the ground does nothing at all. Thats of course where the differential gets its name, it allow differentiating between the wheels.
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Old 12-22-2010, 05:43 PM   #7
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Detroit Tru trac lockers are limited slip lockers which are pretty nice, they will lock the axle when one wheel turns more than a quarter of a turn and as long as both wheels are touching ground or rock it remains locked, but as soon as one wheel comes off the ground it will 'unwind' and thus no more traction to the wheel on the ground.
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Old 12-22-2010, 05:51 PM   #8
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Quote:
Originally Posted by Vaultzz View Post
THe way a stock diff comes is able to allow the 2 wheels to turn at different speeds while applying force to each wheel. (watch the video)

Having a locker holds each axle together (as if there were no spider gears at all). Say your offroading and 1 rear tire comes off the ground (and its floating there) now in 2wd if you hit the gas all the power will go to the wheel thats in the air and the one on the ground won't move. with a locker, all the power would be send to both wheels, allowing the wheel on the ground to push you forward while the wheel in the air is spinning the same speed of the other wheel.

Watch the video at (2:56) and that is like what a locker does

Great vid.... good job!!
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Old 12-22-2010, 06:05 PM   #9
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well I have no idea what I did inside my housing on the rear diff. Just know the axle is bent and the tire sheared off at the hub. I need to take it apart and see....add it to the list
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Old 12-22-2010, 06:13 PM   #10
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Wow...what were you driving over? A boulder as big as a house?
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Old 12-22-2010, 11:46 PM   #11
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Thankyou all for the responses!! Now i know

How much do they run for? Just empty every pocket...
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Old 12-23-2010, 12:17 AM   #12
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So I have a rubicon can I have one wheel on the ground and one wheel off and lock up and still have traction??
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Old 12-23-2010, 12:50 AM   #13
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So I have a rubicon can I have one wheel on the ground and one wheel off and lock up and still have traction??
Yep you have air lockers.. your all set..

Only with Limited Slips do you not have both wheels lock up when one is off the ground..
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Old 12-23-2010, 12:59 AM   #14
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Originally Posted by XJ Knight

Yep you have air lockers.. your all set..

Only with Limited Slips do you not have both wheels lock up when one is off the ground..
Awesome!! Thanks!!
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Old 12-23-2010, 01:09 AM   #15
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How much do they run for? Just empty every pocket...
Depends on what kind you get, but they start at around $600 and go up to around $2000. You can get cable-actuated, air-actuated, electric, or auto lockers. They all have advantages and disadvantages, but it's really just a matter of personal preference.

If your cheap, a lot of guys just weld the spider gears together. It's called a Lincoln locker. Wouldn't recommend it for street use though.

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Old 12-23-2010, 01:28 AM   #16
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Awesome!! Thanks!!
No prob.. Just one more thing I forgot to add.. Rubicon lockers can only be run in 4LO.. But there is a mod to let you run them in 4HI.. Google Rubicon locker mod and there will be some links with directions to show you how to do it..

Nice to have when snow wheeling
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Old 12-23-2010, 02:44 AM   #17
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Originally Posted by XJ Knight

No prob.. Just one more thing I forgot to add.. Rubicon lockers can only be run in 4LO.. But there is a mod to let you run them in 4HI.. Google Rubicon locker mod and there will be some links with directions to show you how to do it..

Nice to have when snow wheeling
Haha thanks man! I have actually already done that mod! I can run them on 2wd as well it was really easy to do also!
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Old 12-23-2010, 02:50 AM   #18
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Haha thanks man! I have actually already done that mod! I can run them on 2wd as well it was really easy to do also!
Most excellent
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Old 12-23-2010, 03:16 AM   #19
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Quote:
Originally Posted by mtbikbob View Post
Detroit Tru trac lockers are limited slip lockers which are pretty nice, they will lock the axle when one wheel turns more than a quarter of a turn and as long as both wheels are touching ground or rock it remains locked, but as soon as one wheel comes off the ground it will 'unwind' and thus no more traction to the wheel on the ground.
Detroit TrueTracs aren't considered "lockers"...they're limited slip differentials. Gear based limited slip differentials as opposed to the more commonly known clutch-based limited slip differentials which the clutch packs or something wears out after a while, which then turns them into open differentials.
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Old 12-23-2010, 01:29 PM   #20
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Looks like I have a new birthday present
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Old 12-25-2010, 10:07 AM   #21
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Looks like I have a new birthday present
Nice!!
Call me jealous.
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Old 12-25-2010, 10:09 AM   #22
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Detroit TrueTracs aren't considered "lockers"...they're limited slip differentials. Gear based limited slip differentials as opposed to the more commonly known clutch-based limited slip differentials which the clutch packs or something wears out after a while, which then turns them into open differentials.

Yup yup yup!!!
Well said.

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