whats everyones opinion on either an lsd or an arb type locker?

ive had arb front n rear on my rr before so I know what to expect from them.but having seen my mates rr get up a hill with ease that I struggled like buggery on,and he had an lsd in the rear I was quite impressed with it.

my current setup is standard diffs
 
whats everyones opinion on either an lsd or an arb type locker?

ive had arb front n rear on my rr before so I know what to expect from them.but having seen my mates rr get up a hill with ease that I struggled like buggery on,and he had an lsd in the rear I was quite impressed with it.

my current setup is standard diffs

unless you are doing serious completion use air. LSD is mighty nice. Our yank tank trucks come standard with front and rear, Sure is nice in ice/snow/mud when you got all 4 tyres with power when you need it.

They do electric lockers now ;)
 
and if wheel suddenly gains traction? will outcome be the same as a normal diff?

if lsd gains traction it drives both wheels on the axle, not as effective as a locker but a lot better than an open diff,
have you considered a detroit locker in the rear diff,
i have one in the rear of my 110, brilliant off road, not quite as good manners on the road but acceptable
 
I use to have locker in rear and lsd in front. Now I have air lockers front and rear
I personally think the better option is lsd front and air locker rear.
With the lsd diff if one wheel is off the floor it will lose drive and put drive to the wheel on the ground, in 2 years I never broke anything with the lsd diff.
 
No mate your thinking of a 4 pin diff

no im not, taken from ashcrofts website

Limited Slip Differentials

For the 'Green Laner' doing non extreme off roading or those driving frequently on low traction surfaces i.e. pulling a horsebox off a grass, or on ice/snow the Limited Slip Differential is an ideal upgrade for your vehicle.

The Limited Slip operation differs from the Locking differential in that it is never 100% locked. It operates by applying torque to the wheel with traction when the other wheel looses grip.

The ATB gear type limited slip relies on the internal friction generated by gear sets within the diff centre, these gear sets are unsupported and designed to be ineffecient. In a normal situation, i.e. on road this diff will be totally transparent, you will not know it is fitted. Provided both wheels have grip no torque biasing takes place, on a bend or corner the faster outer wheel will try to bind up the internal gears but the inner slower wheel constantly unwinds the gears, so again on a corner no bias is felt. On low or no traction surfaces where one wheel has considerably less traction than the other and thus tends to spin, the gear action within the diff causes friction which in turn applies load to the wheel with traction. The amount of torque applied depends on what is termed the 'Bias ratio'. Bias ratios can be varied by different pre-loads and different gear profiles but the most common have a bias ratio of approx 2:1.

The advantage of a Limited Slip differential is that it is totally automatic, no driver interaction and retains drive to both wheels at all times.

The disadvantage of ATB is that if one wheel is totally off the ground ,i.e. no drive then the other wheel similarly because the bias ratio is still 2:1 i.e. 2 x nothing is still nothing. Attempts at changing the preload or left foot braking can then fool the ATB into working or better still if the vehicle is fitted with ATC (automatic traction control) the ATB will enhance the action.
 
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Oh sorry mate im thinking of true trac i had known as a lsd diff. Work alot better than the ashcroft lsd.

TrueTrac® Operation:

Truetrac® differentials are unique in that they increase traction but do not affect steering or wear out prematurely; these problems are common with limited-slip differentials that use clutch plates and springs. TrueTrac performs like a conventional (open) differential, until there is a loss of traction. Only then will the torque transfer occur - when it is needed.

TrueTrac differentials require a certain amount of resistance at the ground (i.e. traction) in order to start the torque transfer. A TrueTrac differential may not transfer torque if the spinning wheel is off the ground or on a very slippery surface. If spinning occurs, often a slight application of the brakes, while carefully applying power, will slow the spinning wheel enough to allow the TrueTrac differential to transfer torque to the other wheel.In low traction situations, like snow and ice, I find the TrueTrac works very good.Unlike automatic lockers, which require a speed difference between the axles to lock up, the TrueTrac begins to transfer torque before any wheel slip occurs.In turns, a limited slip diff biases torque to both wheels, with a bias towards the slower turning inner wheel. An automatic locker puts all the torque on the inside wheel in a turn, as the outer wheel automatically unlocks. An open diff transfers torque equally, but combined with the extra steering load on the outer wheel, it may become overloaded and cause a push or understeer.
 
i was under the impression that the tru trac and ashcroft atb work in a very similar way. Just that ashcroft ones are better quality :D

had my ashcroft rear atb a couple of months now and it definately makes a difference. on mud it makes a huge difference to traction, on rocky section not so much but you can still tell - which is due to more likelyhood of getting wheel in the air. A bit of brake will help, but ive not mastered that yet!
 
i was under the impression that the tru trac and ashcroft atb work in a very similar way. Just that ashcroft ones are better quality :D

had my ashcroft rear atb a couple of months now and it definately makes a difference. on mud it makes a huge difference to traction, on rocky section not so much but you can still tell - which is due to more likelyhood of getting wheel in the air. A bit of brake will help, but ive not mastered that yet!

they do work the same way, just Stu hasn't realised it yet, there different brands of the same thing
 

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