LOL!You need to let some air out of a tyre and drive round like it for a couple of days - you'll soon become very intimate with your IRD
Edit : Please don't!
LOL!You need to let some air out of a tyre and drive round like it for a couple of days - you'll soon become very intimate with your IRD
Edit : Please don't!
Just been reading about it on the Ashcroft engineering website - the combination of an LSD and HDC/TC would be a very good one!Yup, it's a good stuff. Together with TC (helps to switch locking it up, or you can do it manual by handbrake) do great job wth one rear wheel up, or on ditch
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.
With permanent 4WD (eg Winu's "Classic type" LR/RR) - if you're on a slippery surface and 1 wheel loses traction - that's it, no other wheels get drive, you are stuck just as you would with a 2WD car. If you engage the center diff lock - then you will get drive to at least 1 wheel on each axle (not on D2!). With Freelander AWD the VCU provides the same functionality as an automatic center diff lock - so you'll get drive to at least 2 wheels. You have to be doing some pretty serious off roading if you want to guarantee that more than 2 wheels will be driven. TC makes locking more wheels even less beneficial. HDC (I think) is just a bit gimmicky.
Ok so I still want a Freelander despite all your tales of woe and I think it's going to be a v6. There don't seem to be many about. Most are in England (I'm in Scotland)
What should I be looking for when I see one-is there anything that can be tested-I presume it's easy to see if there's no prop shaft-any comment/ideas welcome
They don't do very well in Shetland peat bogs. Though to be fair I got it stuck on purpose as we were having a recovery training day. My Defender was also bogged down in it.
I don't think I'm going to sell it. It doesn't look as if it has ever been used. But it was a bit dark last night to look at it properly.
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