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lokka diffs

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242 Seriously Crusin Dubber

179 posts · joined Sep 2002 ·

#10049
Does anyone here have experience with the lokka diffs. Not sure if that is a brand name or type. My father is considering one for his aircool vanagon.

Cam Custom Title Time!

1,535 posts · joined Aug 2002 ·

#10054
If they're the ones I'm thinking of it's a term. as in spools, detroit lockers, etc....

Tell him to forget it. It keeps both driving wheels locked, he's better off with a limited slip diff.

C

242 Seriously Crusin Dubber

179 posts · joined Sep 2002 ·

#10095
No he says it acts as a normal diff when cornering etc (detroit lockers are permanently engaged?) but will lock if one wheel spins, not progresive like a lsd, just bang-locked. He would get a lsd but has had big probs getting one at reasonable cost.

Secoh Fahrvergnugen

926 posts · joined Sep 2002 ·

#10167
Thats a detroit locker you have described. a spool or straight out locked diff is locked all the tine, whereas a detroit only locks once one wheel has started to spin over a certain rate.

Avoid them unless it's for towing a boat, they are a savage thing and when you pick up an inside wheel and it locks, it usually causes you to go straight into a spin due to completely losing traction in both wheels.

An air locking diff might be a better prospect.
If it aint broke,
Make it go faster!!

KruizinKombi Seriously Obsessed Cyber Dubber

3,493 posts · joined Aug 2002 ·

#10446
roadrage, I don't mean to nit-pick, but if locking diffs worked in the manner that you described, then the vehicle would have no reverse!

You're not far off the mark though, most auto-lockers use a ramp-type system that will automatically lock the diff momentarily when the wheels are turning at different speeds. 🙂
Kruizin Kol

Kombi Dad Slammed & Awesome Dubber

96 posts · joined Jun 2003 ·

#53949
Just thought I would let you know that I have fitted the locking diff that my son posted late last year. I have now about ten thousand kilometers on it and have found no vices. Obviuosly it is different to drive in all conditions including the wet here in Canberra but the traction it gives is certainly worth the change. It certainly has not become uncontrollable in the wet as some would have advised. Roadrage has hit the nail on the head as far as how it works. A wheel can only turn faster than the engine drive, so in a corner the outside wheel will unlock as suggested. You do get understear in the corner because of the extra traction and if you put your foot on the clutch in the corner you will have too much steering applied. It is something that one gets used too very quickly. By the way, my wife drives the kombi and says that it is much better behaved. Glad to answer any other questions that any of you out ther have.

The 4WD shop in Adelaide where I sourced the diff say that they have fitted it to the same gear box but in an earlier bus with no problems, handling or otherwise.

daz67 Qld Manx

627 posts · joined Aug 2002 ·

#54136
Kombi Dad,


Would love to hear what the costings were on purchasing and fitting the Lock-Rite diff, I was unaware Lock-rite produced one for VW. I have experienced these in 4wd's I have owned/driven.

Any info even if its just the name and number of the guys who supplied and fitted.

Thanks
Darryl
darryl.hall@motorline.com.au
0419 665725


www.reddogearthmoving.com.au

242 Seriously Crusin Dubber

179 posts · joined Sep 2002 ·

#54225
I heard you have a real nice splitty ute Kombi Dad, you should post some pics for all to see.😎

Tazz Old Skool

1,315 posts · joined Aug 2002 ·

#54271
Lokka's are a good spider gear replacement.

They do not lock entirely. teh are locked in a straight line, but when you turn the slotted teeth allow for the outer wheel to turn at the rate needed.
Used it in a front diff of a patrol, found it Awesome!
Still gave good steering and slipped when it needed.( beats braking poooo)
1962 Type3 Squareback
1967 Type3 Fastback "Kermit"

The truth is important. It will set you free

Kombi Dad Slammed & Awesome Dubber

96 posts · joined Jun 2003 ·

#54344
The Lockrite that I had fitted was obtained from 4WD Systems in Adelaide. The site is www.4wdsystems.com.au and cost was about $900.00 plus fitting at about November last year. With dollar fairing better the price should be lower as the product is US.

Yes I do own a 1963 split single cab as suggested. A photo will come.

BiX Veteran Volks Folk

2,499 posts · joined Sep 2002 ·

#54369
just having abit of think about the operation of this diff. Now if the outside wheel around a corner is allowed to spin faster and all the power is applied to the inside wheel wonn't this mean that if u corner hard and get the insdie wheel "light" that it will spin more dur to all the power being applied to this wheel? just thinking it might be an alternative to a lsd on the track.

daz67 Qld Manx

627 posts · joined Aug 2002 ·

#54503
Info from the web site, Also for those interested, I have contacted these guys and waiting on confirmation the price was around $895. They do not currently have them in stock, but they are checking on availability for me.

I will post again when they get back to me.

Darryl

How it works

In comparison to other lockers LOKKA uses an amazingly simple method to couple the axles for maximum traction and to uncouple them for full differential action. ie as required when cornering or driving on hard surfaces.

The actual principal of it's operation while easily demonstrated is difficult to explain in writing - but is as follows.


1. LOKKA has only 4 main parts - a pair of Driver and a Coupler (side) gears for each axle, there are some springs and pins, some have spacers.

2. LOKKA is normally in a fully locked state and only allows differential action by uncoupling the unit when the ground driven force acting on a wheel (either during turning or when negotiating obstacles) forces that wheel to turn faster than the other driven wheel.
ie a turning vehicle's wheels actually travel two different paths with the inside wheel turning in one circle while the outside wheel travels in a larger circle, and therefore faster.

3. LOKKA makes use of two distinctly different sets of opposing forces that exist due to its design - one to dynamically couple the gears when engine torque is applied and the other to uncouple the gears when one wheel overruns.

3a. The locking (coupling) force is applied by the action of the pinion cross shaft acting on a uniquely designed and shaped Driver - the more torque that is applied the harder the unit locks.

3b. The unlocking (uncoupling) action occurs due to the ramping effect between the low profile ramped teeth which force the Driver away from the Coupler (side gear) eg when an outside wheel turns faster than than an inside wheel when cornering. Power continues to be applied to the inside axle. As the turn is completed and the wheels again rotate at the same speed, the outside coupler re-engages.

4. It should be understood that only when there is an external force being applied to a wheel to make it turn faster than the rest of the drive train will LOKKA allow one wheel to differentiate. Slippery surfaces where one wheel would normally break traction in an open diff cause Lock-Right to stay locked - even with one or both wheels in the air Lock-Right will remain locked.


www.reddogearthmoving.com.au

Manx JR Son of Manx

7 posts · joined Jun 2003 ·

#54721
KruizinKombi wrote:You're not far off the mark though, most auto-lockers use a ramp-type system that will automatically lock the diff momentarily when the wheels are turning at different speeds. 🙂
I think you maybe confussed with an LSD. All the "ratchet " lockers on the market - Detroit, Lock Right, Lokka, Aussie Locker, etc etc use exactly the style of operation. They are LOCKED all of the time and use a 4 pin ratchet sytem to allow the outside wheel to travel faster but never slower. In reverse they work exactly the same. They have a 2 way ratchet, the key to the design is in the pin actaution.
I have been told by several 4WD guys that the Lokka version of the Lock Right is very harsh and has a tendancy to break axles. I think DAZ67 if you put one in a Manx you will find you no longer need a steering wheel as your front end will float right off the road under any sort of power.
I have a few Lock Right manuals around somewhere if you want the exact specifics.
I hope this helps

Kombi Dad Slammed & Awesome Dubber

96 posts · joined Jun 2003 ·

#54790
I can understand that breaking of axles is an issue if you realy drop the clutch. In the Kombi I do take off about the same as when I didn't have it fitted and there doesn't seem to be an issue. In a manx with a light front end it may be a problem to keep the steering doing what it is supposed to do.

As time goes on I will let you know what happens with this one here. Must go out the scr

daz67 Qld Manx

627 posts · joined Aug 2002 ·

#55628
Ok, the price has not changed too much, it is around the $950 has to be a 2.ol gearbox and they have one in stock.


www.reddogearthmoving.com.au

Kombi Dad Slammed & Awesome Dubber

96 posts · joined Jun 2003 ·

#119313
Well it's six months since I had the Lockrite installed. I have travelled about 30,000 km and all is well. In fact I can say very well. I have driven it in almost all conditions including a winter in the ACT.

The other weekend I had the chance to take it on a steep muddy track and it performed very well. The only issue was if I got too much power down the wheels would spin with a loss of traction. This I have learnt to respect on a couple of occasions but if you treat it with that respect it works extremely well.

On road I have not noticed any vices provided it is driven as per the makers instruction which basically says keep power on in corners. The roughness and chatter of the diff is only noticed at low speed i.e. parking lot, when you have too much power for the turn. I have learnt to slow it down and drive with power on in all turns.

My wife loves driving it and I am pretty dammed pleased with it.

Brad Wolfsburg Elder

3,764 posts · joined Aug 2002 ·

#119445
so who want one ???
Brad
Why copy when you can own an original ?
Meyers Manx Australia

Andy Andy\'s Adventures

2,820 posts · joined Nov 2002 ·

#119446
Now that sounds cool,
Daz, by 2L do you mean Kombi GB?
Might have to get me one!!!

KruizinKombi Seriously Obsessed Cyber Dubber

3,493 posts · joined Aug 2002 ·

#119647
I'd love one, but I'm going to have to wait.... 🙁
Kruizin Kol

Kombi Dad Slammed & Awesome Dubber

96 posts · joined Jun 2003 ·

#119694
The 2L gearbox that Daz refers to is the four speed box fitted to the 2 litre engine just before the kombis went to water cooled. My van is a 1982 van and is the last of the air cooled. I believe that earlier vans have been fitted with the lolcking diff, have used and earlier engine but fitted up to the later gear box. Hope this makes sense.

Craig Torrens 6 times Australian, 7 times State Hillclimb Class Champion

8,040 posts · joined Jan 2003 ·

#119718
price is great, what is it worth for a rebuilt 2lt box???


Andy Andy\'s Adventures

2,820 posts · joined Nov 2002 ·

#119795
So the '80 to'83 T3 (or T2.5) kombi's have a different gear box to the pre '80 2L T2 kombi's is what your saying Kombi Dad?
Pity, would have been a cool addition.
Then would it fit a '91 water cooled T3?

Kombi Dad Slammed & Awesome Dubber

96 posts · joined Jun 2003 ·

#121606
Andy - I believe that is correct. Nick at Volksparts tells me that the 80 to 83 had the gear box/diff that I have modified.

Andy Andy\'s Adventures

2,820 posts · joined Nov 2002 ·

#121733
Thanks for that.
Still would like something one day, but a long way down the wish list at the moment :thumb

hotdog008 Commited Dubber

61 posts · joined Sep 2002 ·

#125619
i have a good article on the lock-rite in a manx.
you can use any 002 g-box (1600, 1800)
BUT you must use a 091(2 lt.) diff
i have emailed weddle engineering in the states who make them for the current price.
will let you know how much

hotdog008 Commited Dubber

61 posts · joined Sep 2002 ·

#125620
i have a good article on the lock-rite in a manx.
you can use any 002 g-box (1600, 1800)
BUT you must use a 091(2 lt.) diff
i have emailed weddle engineering in the states who make them for the current price.
will let you know how much

Andy Andy\'s Adventures

2,820 posts · joined Nov 2002 ·

#125973
Cool 😀

Craig Torrens 6 times Australian, 7 times State Hillclimb Class Champion

8,040 posts · joined Jan 2003 ·

#125985
hotdog008 wrote:i have a good article on the lock-rite in a manx.
you can use any 002 g-box (1600, 1800)
BUT you must use a 091(2 lt.) diff
i have emailed weddle engineering in the states who make them for the current price.
will let you know how much
would love to see the article, any chance of posting !

I thought a 2lt diff/gearbox did not interchange with the 1.6/1.8 gearbox ?!?!
Learning more about Kombi boxes:jesus