lokka feedback

Submitted: Sunday, Feb 04, 2007 at 18:00
ThreadID: 41974 Views:1864 Replies:4 FollowUps:10
This Thread has been Archived
i put a lokka in the front of my smurf about 2 months ago and i love it it does have some downsides in steering but the gains in mud and hill climbes is amazing i also tried to get bogged in the sand at rainbow beach but was unable defenately worth getting
Back Expand Un-Read 0 Moderator

Reply By: mrbasilbrush - Sunday, Feb 04, 2007 at 18:34

Sunday, Feb 04, 2007 at 18:34
I`ve decided to get one of those soon for my hilux front diff.

Did you get the powerTrax lockright one ?

Did you fit it your self ? And do you have to remove the axles to get it in ?

One of my work mates saved up and got front and rear ARB Air lockers, Cost him heaps, He reckons you can hardly steer it when their locked in.

cheers.
AnswerID: 219719

Follow Up By: dirty dirty 4x4 - Tuesday, Feb 06, 2007 at 13:47

Tuesday, Feb 06, 2007 at 13:47
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.
0
FollowupID: 480722

Reply By: Red One - Sunday, Feb 04, 2007 at 20:00

Sunday, Feb 04, 2007 at 20:00
How can they differ in operation. They both lock the diff. Why would the ARB one be harder to steer?
AnswerID: 219735

Follow Up By: Wayne-o - Sunday, Feb 04, 2007 at 20:55

Sunday, Feb 04, 2007 at 20:55
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.
0
FollowupID: 480317

Follow Up By: Patrol_Driver - Sunday, Feb 04, 2007 at 20:55

Sunday, Feb 04, 2007 at 20:55
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".

0
FollowupID: 480318

Follow Up By: F4Phantom - Sunday, Feb 04, 2007 at 21:40

Sunday, Feb 04, 2007 at 21:40
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.
0
FollowupID: 480329

Follow Up By: Patrol_Driver - Sunday, Feb 04, 2007 at 22:09

Sunday, Feb 04, 2007 at 22:09
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.
0
FollowupID: 480331

Follow Up By: BUGGER ME - Sunday, Feb 04, 2007 at 23:35

Sunday, Feb 04, 2007 at 23:35
hi guys

wher do you purchase these lokkas from or where can i get some more info.
bugger me, bunbury w.a.
0
FollowupID: 480356

Follow Up By: F4Phantom - Sunday, Feb 04, 2007 at 23:48

Sunday, Feb 04, 2007 at 23:48
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.
0
FollowupID: 480363

Follow Up By: Member - Captain (WA) - Monday, Feb 05, 2007 at 00:20

Monday, Feb 05, 2007 at 00:20
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

0
FollowupID: 480374

Reply By: Boldjack - Sunday, Feb 04, 2007 at 22:38

Sunday, Feb 04, 2007 at 22:38
Hi, F4Phantom,
Yes you are correct. I think Patrol_Driver needs to check his information again.
Cheers, Boldjack.
AnswerID: 219777

Follow Up By: Patrol_Driver - Sunday, Feb 04, 2007 at 23:50

Sunday, Feb 04, 2007 at 23:50
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
0
FollowupID: 480364

Reply By: Twinkles - Monday, Feb 05, 2007 at 05:28

Monday, Feb 05, 2007 at 05:28
Does this cause any more wear on the tyres?
AnswerID: 219803

Follow Up By: dirty dirty 4x4 - Tuesday, Feb 06, 2007 at 14:24

Tuesday, Feb 06, 2007 at 14:24
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
0
FollowupID: 480728

Sponsored Links