Lockers

[Paultan]

I have spent a long time reading through various posts (in other forums as well) on lockers. My initial thoughts was to install ARB on the rear and then when I could install them on the front. I already have a ARB twin compressor installed.

Having done my research I am now wondering if this is the right choice, maybe Detroit True trac in the front & Ashcroft in the rear ?? Has anyone installed lockers in their Perenties and if so how have you found them?? Would do you do something different?

Cheers
Paul

[BadCo.]

Hey Paul, after having been involved in a few winch comps I will definitely be going selectable lockers in my 110. It can be difficult to get out of ruts with Auto/helical gear lockers among other things. Much more control when you can turn them off!

I'll probably go Maxi Drive in the rear and undecided about the front just yet. They are on that long list of things to do...

Hey you need a turbo, power steering and big mud tires before lockers ;)

[Bearman]

Detroit no spin in both rears and trutrac in the front in my 6x6.

[DeeJay]

Looking at how haggard my rear tyres have become since installing a Detroit, I am wondering if I did the right thing.

[67hardtop]

Detroit no spin in both rears and trutrac in the front in my 6x6.

Hi Bearman, do you still have the 4.7 ratios in the 6x6 or have you changed them to 3.54?

Cheers Rod

Sent from my GT-I9507 using AULRO mobile app

[Bearman]

Hi Bearman, do you still have the 4.7 ratios in the 6x6 or have you changed them to 3.54?

Cheers Rod

Sent from my GT-I9507 using AULRO mobile app

Still 4.7 Rod, 3.5 is too high for them in standard engine form. I was contemplating using 4.1 and maybe using the RFSV transfer gearing but I don't thing the small difference would be worth the capital outlay for the Salisbury cw&p's in that ratio. Has anyone done a speed/rpm graph for the 3 ratios with .996 and 1.123

[67hardtop]

Hi bearman, if its possible do you still have the part numbers for the front trutrak and rear detroit and where you got them from and how much?
Thank you.

Pm me if u want to.

Cheers Rod

Sent from my GT-I9507 using AULRO mobile app

[Bearman]

Hi bearman, if its possible do you still have the part numbers for the front trutrak and rear detroit and where you got them from and how much?
Thank you.

Pm me if u want to.

Cheers Rod

Sent from my GT-I9507 using AULRO mobile app

Rod I am away from home until Friday but will post up the part numbers then. I bought both rears s/hand off the forum here (they fit any ratio carrier) and the front is one I got from the AFM auctions with a stuffed cw&p. It is actually a 3.54 one but has a spacer to accommodate the 4.7 cw. Must have come from a LRPV I think. 912A407 is the part number
Detroit 912A407 Truetrac Land Rover F 24 Spline Differential Drivetrain | eBay (http://www.ebay.com.au/itm/Detroit-912A407-TrueTrac-Land-Rover-F-24-Spline-Differential-Drivetrain-/222056291198?hash=item33b3961b7e:g:rYYAAOSwoBtW6hS q)

[67hardtop]

Ok thanks Bearman. Im having trouble finding them and getting a correct part number will help me a lot. I have a salisbury in the rear of my s2a and standard in the front. I have both types of front axles 10 and 24 spline available to me to use. Thanks again.

Cheers Rod

Sent from my GT-I9507 using AULRO mobile app

[Bearman]

225SL36 are the rear ones - google is a marvellous thing!!!
Filthy Motorsports Drivetrain Shop | Axle Parts, Lockers, and Gears (http://www.drivetrainshop.com/default.asp)

[Outback]

I have had several 4x4s over the years with lockers and selectable lockers. Usually I would run a limited slip up front and a locker out back. Then they came out with selectable lockers. To me a selectable locker on a vehicle that runs on the streets or a daily driver is a must over a Detroit style locker. Off road making turns with a front locked axle is difficult. But turning it off at a flip of a switch and having an open axle when needed (hard turns on switch backs) is superior to a Detroit style locker. All of my current 4x4s have ARBs or factory selectable lockers. When I get my Perentie 110 I plan on having selectable lockers as well.

[MVFrancis]

I've got a detroit locker in the back and a truetrac in the front of my Perentie. I was given them both, but if I had to build another car I would do exactly the same again. Having said that, I only use the Perentie offroad, I've got plenty of other cars that do a much "better" job of getting me from A to B. The positives of this set up- bare minimum moving parts or points of failure. No external components or connections required, they just do their thing. Very cheap compared to selectable lockers.
The biggest downside I had was the unbelievable weight of the steering with this combination and 255/85/16 MTs. I finally cracked a fitted a PS kit last week (easily one of the best things I've done to it), but it was a serious chore to park the thing or negotiate rocky sections of track before this.

Decide what's best for you based on how you use the car- if my Perentie was a daily driver and I wanted lockers I would spend the extra money and put selectable lockers in.

[Dervish]

I was contemplating using 4.1 and maybe using the RFSV transfer gearing but I don't thing the small difference would be worth the capital outlay for the Salisbury cw&p's in that ratio. Has anyone done a speed/rpm graph for the 3 ratios with .996 and 1.123



Dotted line 0.996, solid line 1.123.



3.54 diffs:



https://www.aulro.com/afvb/images/imported/2016/05/639.jpg



4.1 diffs:



https://www.aulro.com/afvb/images/imported/2016/05/640.jpg



4.7 diffs:



https://www.aulro.com/afvb/images/imported/2016/05/641.jpg



Comparison of 0.996 with 4.7 (dotted) and 1.123 with 4.1 (solid):



https://www.aulro.com/afvb/images/imported/2016/05/642.jpg



So probably not worth it then!

[Bearman]

Thanks Dervish, I think you have them back to front on the 3 top graphs. 1.123 is gunna give you more rpm than the .996.

[Dervish]

Thanks Dervish, I think you have them back to front on the 3 top graphs. 1.123 is gunna give you more rpm than the .996.



Yes, you were right - typo. I've edited the post to correct it.

[Vern]

Dervish, where would i get a copy of this little program you use for doing these graphs?

[Sitec]

front trutrac and rear detroit and where you got them from?

Hi there.

Just dropped in for a look as the 'lockers' heading caught my eye. Re a source for Detroits and Trutrac's on here, mine came from a guy who is a forum member. He trades as 'Lucky8Offroad' on the net. He shipped both separately so as to get under the $1000 'issue', but he was also by far the cheapest I could find (by nearly 50%) several years ago. And both cost not much more than $1200.

Going on from that, I have run A Detroit in the rear and a Trutrac in the front of several of my Land Rovers, and with upgraded shafts they have been truly awesome! I've used Airlockers in competition in the UK and found them a pain in the arse, as they wouldn't always unlock etc.. That is just my opinion though, and that said, the truck I now own has air operated lockers front and rear.. Hope to hell I don't get that stuck on a beach or the Simpson as it'll be an expensive tow!! Cheers for now!

[inside]

My own view on this is that the Perentie is a no-fuss, non electrical vehicle where even power steering seems somewhat of a complication. This reason why these vehicles are great is that they are very simple and personally I think it's best not to complicate them when there is an alternative option.

Mine has a detroit rear with HTE shafts and flanges in the back. The front has ashcroft ATB, ashcroft CVs, HTE axles and flanges in the front. This setup has proven very reliable and works great in a tourer. Air lockers mean you need a switch and then you need an air line, then there's seals and other stuff to worry about. Keep it simple, it's what makes these vehicles so great.

[BadCo.]

My own view on this is that the Perentie is a no-fuss, non electrical vehicle where even power steering seems somewhat of a complication. This reason why these vehicles are great is that they are very simple and personally I think it's best not to complicate them when there is an alternative option.

Mine has a detroit rear with HTE shafts and flanges in the back. The front has ashcroft ATB, ashcroft CVs, HTE axles and flanges in the front. This setup has proven very reliable and works great in a tourer. Air lockers mean you need a switch and then you need an air line, then there's seals and other stuff to worry about. Keep it simple, it's what makes these vehicles so great.

Why not run vac lockers? Same is as the CDL then, so technically no added unreliability ;)

[Outback]

Why not run vac lockers? Same is as the CDL then, so technically no added unreliability ;)


DO YOU HAVE VAC LOCKS FOR THEM?

[BadCo.]

DO YOU HAVE VAC LOCKS FOR THEM?

The maxi drive for the rear is vacuum operated. Not sure about the front, maybe you can modify an air operated one to run on vacuum...

EDIT: Oh yeah, McNamara make a vacuum operated diff locks.

[Vern]

The maxi drive for the rear is vacuum operated. Not sure about the front, maybe you can modify an air operated one to run on vacuum...

EDIT: Oh yeah, McNamara make a vacuum operated diff locks.

Maxi are front and rear vacuum. Jacmac haven't done a vac locker for years! Shame really as they do make the best lockers

[BadCo.]

Maxi are front and rear vacuum. Jacmac haven't done a vac locker for years! Shame really as they do make the best lockers

Its still on there website?

[Vern]

That doesn't mean much, their not a computer savvy bunch at jacmac, i think they still have an IBM286 computer they use😊. Its very old school, all real old machinary, its pretty cool. So guessing they haven't updated the website since it was first done😊

[BadCo.]

That's a bummer, I would have liked twin vac lockers.

I think I remember someone recently trying to get a front maxi but i think they had trouble with the 10 spline or something..