front or rear lockers

I have both front and back lockers.
My next choice would be the LSD at the rear and a lockable diff at the front.
I haven’t seen this setup used previously – I would investigate it with a professional before I made the change.

Hi Brendan,

When I added a locker to the Troopy I sought the wisdom of my 4WD mechanic as to whether it should be front or back axle.
His advice was as follows:

1. As the Troopy has coil springs on the front and leaf springs on the rear, the front wheels have better articulation and are more likely to remain in contact with the ground. Therefore with the rear axle more likely to lift a wheel it was the rear that would most benefit from a locker. Note that as usual for a Land Cruiser, the existing limited slip diff on the rear was useless.

2. I had more weight on the rear axle and thus needed more drive there so again.... locker on the rear.

3. With a locker on the rear there is less interference to the steering.

So I went along with his recommendation. Have needed it little so far so have not tested his logic.

What sort/brand/type of vehicle are you talking about?
Many modern smaller 4wd have an LSD which works and therefore a locker in the front of IFS is a god thing.
There are many ways to view this and unless the application is known you may not get the best recommendation for your purpose.

Sometimes Free Wheel Hubs are also employed and the options of use are further increased.
With Full time 4wd types the rules change again.

guy from whyalla who used to frequent this forum had an online mag a while ago

he did quite a comprehensive test fully written up on which provides the most benifit and its the front by quite a large margin