lokka feedback

i got a lokka lockrite it cost me $500 and because i dont know much about diffs i got someone who knows what there doing to put it in i have the ifs and needed a new diff centre anyway so pulled the diff out and took it into the shop cost 300 to pull diff center out of new second hand diff plus original diff clean it out put the lokka in reset everything that needed to be reset and back together. Axles stayed in though i did get a good tip for putting diff back in knock the studs out of one axle or even both if you need to to allow easy instilation it took me half an hour to diff back in by myself.

In soft sand and mud, and with a wheel in the air, no difference. the axel is locked solid as you say. The only difference is that the air lokka is locked with air and until you remove that air pressur it stays locked. The other lokka's use torsion springs, therefore if the lokka senses lack of traction via lack of torsion on one side of the lokka it will lock. Under high traction situations, ie both wheels on the ground and with traction, it will unlock until it senses the loss intraction again, ie making is more seerable in high traction conditions.

They do operate quite differently.

The ARB locks the diff completely on command, had one in the front of the Patrol and it definitely makes it difficult to steer.

The Lokkas or lock-rights are more like "un-lockers", they allow a wheel to go slower than the driven wheel but not faster, so if you pop a wheel on a rut, it will only spin as fast as the one on the ground so you still have traction, when you go round a corner on the blacktop, the outer wheel spins faster than the inner wheel so the inner wheel is "unlocked".

I am happy to be corrected but I think you mean they allow one wheel to travel faster than the driven wheel but not slower.

Hi,

No, it stops a wheel from spinning faster than the driven wheel but unlocks to allow it to go slower than the driven wheel. If the lokka allowed the wheel to spin faster than the driven wheel, then when you lifted a wheel on a rut, it would spin faster than the one on the ground and you end up with the same situation as an open diff.

hi guys

wher do you purchase these lokkas from or where can i get some more info.
bugger me, bunbury w.a.

Sorry mate you would need to make more sense to change my mind on this one. What happens is the lokka drives the wheels at the rate of the propshaft plus whatever the final ratio is, then if you corner the ourside wheel which travels further has grip on the road and this force drives the outter wheel faster, all the lokka does is allows this to happen. If one wheel is in the air it cannot be driven so will not unlock. The design is ingenius I think, the less grip the harder the thing locks up. In an open diff the wheel with the least grip gets more torque in this way you find that the outside wheel ususally drives in a corner, so the lokka does display some interesting side effects while driving.

Hi Patrol Driver,

The lokka allows a wheel to be rotated faster than driven speed ie. when cornering with traction it can overspeed as the "road" is driving the wheel. The faster wheel is not engine driven but "traction" driven while the slower wheel is being engine driven.

When traction is poor, both wheels rotate at driven speed as their is nothing to drive one wheel faster.

I hope this explanation makes sense, it is the reason why lokkas retain their steering control even though they are "locked".

Cheers

Captain

Apologies to all, it is late and I got it exactly back to front.

Here is the "good oil" from the lokka site:

Firstly : LOKKA is normally locked and only unlocks when something (other than the engine) forces a wheel to turn faster than the diff is turning it. (ie to overrun)

Secondly : because LOKKA is normally locked, unlike a standard diff it can never break traction on one wheel only. It is physically impossible to drive one wheel faster than another by the engine - the two wheels will always be driven at the same speed, ie a wheel can turn faster than the diff turns it, but it can never turn slower.

Thus the only time that a wheel can turn faster than the diff or engine is turning it, is when you go around a corner and the "ground driven" forces acting on the outside wheel force it to turn faster

it probly will cause a little more than normal but i have inside 4x4 wich turns 4x4 on/off with a button so most the time im not even using it you could achieve the same thing with manual locking hubs just meens you have to get in and out more offten