Thread: True Trac or Detroit locker

Most people in the UK do the rear axle first and then the front if they need more. But we dont have that much sand we can drive on over here!

Originally Posted by Zinke

Most people in the UK do the rear axle first and then the front if they need more. But we dont have that much sand we can drive on over here!

Yosh already has his rear locked with a Detroit....he is asking for feedback from those who have put in a TrueTrac at the front (and preferably like him already have their rear locked).

Originally Posted by cockie55

Yosh already has his rear locked with a Detroit....he is asking for feedback from those who have put in a TrueTrac at the front (and preferably like him already have their rear locked).

I was only replying to BigJon's comment, saying most people i know fit a locker or LSD the rear axle first and then add to the front if they feel they need more but we dont have as much experience with sand as you guys.

Many thanks for your helpful input though!

Originally Posted by Blknight.aus

the simplest way is what I call a sprag locker. these are sometimes called an unlocker. Its essentially a normal open diff with a pair of one way clutches attached to the carrier, one for each axle. When the crown wheel turns in the normal direction of operation both axles are driven forwards by the clutches. When you corner and one wheel speeds up it overruns the clutch and is free to turn faster than the crownwheel.
This type of diff has a couple of drawbacks. 1. They dont work in reverse and 2. depending on the exact situation they can cause some havoc with the vehicles handling if you have two of them fitted. 3. I have heard of a couple of cases where with 2 fitted and four wheel drive accidentally engaged on high traction surfaces they have taken out driveline components.

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Are you saying that the detroit has issues going in reverse?
Do they 'unlock' when going in reverse?

cheers, Steve

I find the comments on Detroits interesting.
My Detroit in a Salisbury fitted to a 101 landrover...ie short wheel base and bar threads.....the worse possible thing for wet round abouts etc and I tow regularly 2 tonnes etc and my 101 see s much off road action.
fact.......with a constant 4wd system you usually have to tell some one new to the vehicle driving it that a detroit is fitted in the rear as they dont notice it, towing, roundabouts, wet roads or not.

Detroits work the same going backwards or forwards.....fact.

Side ways slops with wet mud , grasss etc.... yes the rear of the vehicle may step out and that fact is you have all ready gone further along the slope than you could have gone with a unlocked diff and a sectable locker will do the same thing when locked......no difference there.
The reason why a normal open diff will not step out as it will spin a wheel and lose traction before the vehicle steps out side ways and locked rear end will keep pushing and spining both rear wheels on a side slope if the driver has his foot down letting the vrhicle move side ways.........fact.

If a vehicle axle assy has a locker fitted of any type and that axle assy was not designed for a locker from the factory then the haft shafts(driving axles) should be up graded as that diff, axle assy was not designed to take full torque though on 1 drive axle shaft instead of the 2 as designed.........fact.

I dont mean to sound know it all, but I am just trying to make muddy water clear.
ron

I had a full Detroit in the back and the soft detroit locker in the front.

True Track is a LSD which means that you will never get full axel lock. I think I was told at abut 75% of full lock they slip hence LSD and why they can be used on the front.

Best combination may be the full detroit on the back with and ARB on the front