Vehicle & Technical > Defender

Diff lockers & LSDs

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davidlandy:
What are the pros and cons of the main types of these - ie detroit, arb etc..

Anybody got these and how do they work ?

please advise

Dave

Thrasher:
Dave,

Piglet runs Detroit Tru-Tracs front and rear. Essentially they are automatic LSD's. When one wheel spins 3 rotations more than the other, the diff locks using gears, not clutch packs. I like them. Most people have one of these and a true locker. I got a VERY good deal for these....and only replaced my normal diffs when they needed doing.

davidlandy:
Neil

do u mean like an lsd on the front and a locker on the back?

what difference has it made to Piglets ability?

Dave

Thrasher:
He can push himslef further into a situation he needs to towed/winched out of. In belgium he buried his rear diff into a bridge :(

muddyweb:
There are a few different types :

Limited Slip Differentials : Available in a number of types, these will limit the amount of slip that can occur across the axle.  They are usually not a locker in the sense that if you stick one wheel in the air, it will spin. (The diff doesn't lock solid)

Automatically Locking Differentials : These work in a similar way to the above, detecting wheelspin but this type will lock the diff solid.

Positive Locking Differentials : Using mechanical, air pressure or vacuum methods, these are manually controlled and will lock the diff solid.


My set up is as follows :  

ARB Air locking differential on the rear.  Provides positive traction at both wheels, regardless of conditions and contact with the ground.  Under manual control, means that I can engage it *before* I loose traction.

Tru-Trac Torque Biasing LSD on the front.  Provides 'soft' transfer of power across the front axle, works automatically, and due to the fact that it continues to work as a diff has a much lesser effect on the steering than a full locker.

I am not a fan of automatic full lockers, or putting full lockers in the front axle, which is why I went for the setup I have.


Hope this helps.

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