Member Since: 31 Aug 2010
Location: retford'ish
Posts: 2226
Thanks Robbie ^
ISTR along the lines of,
as the car detects wheel spin and applies a brake to stop it and divert the drive,
it can also reduce your forward motion, keep the momentum but may get more wheel spin
When ever I want to practice all this Before I need it swmbo just glares at me for playing Transit! 2019
Gone D3 HSE 2008
Another Porsche Cayenne 2022
Gone Porsche Cayenne 2020
Gone RRS HSE Dynamic 2016
Gone RRS HSE LUX 2011
Gone RRS HSE 2006
Gone D3 SE 2.7 2008
gone D2 Td5 1999
I plan on living forever and so far so good !
Club DG Mclaren stuff
.
5th Feb 2019 11:53 pm
DG Site Moderator
Member Since: 12 Dec 2005
Location: The Gaff
Posts: 50978
Don't forget that DSC is never really switched off
6th Feb 2019 12:09 am
RDR
Member Since: 24 Mar 2013
Location: Derbyshire
Posts: 2260
AT tyres will help but only a little, been stuck many times on wet grass in our paddock and most memorably Clumber Park where a ranger had to pull us off using a tractor - we were up to the Hubs by the time I gave up
Trick is the getting started as the Disco's trickery can sometimes play against you if your not aware of what it's doing. If I'm getting nowhere I have had success by putting the rubber floor matts under the wheels the car quickly senses the slightest traction on a wheel and directs drive so you just need the matt wedged under the edge of the tyre. Once you start to move DO NOT try and accelerate until you have decent momentum otherwise it may dip the power.
As others have said, wet grass is the worst and you cant beat physics no matter what 4x4 you're in.MY06 S - Gone but not forgotten
MY12 HSE - Gone
MY16 HSE Luxury - Sold
MY20 D5 HSE - Sold
Current RR L460 PHEV
6th Feb 2019 6:25 am
robpenrose
Member Since: 12 Jan 2016
Location: Surrey / SW London
Posts: 2138
D&G wrote:
https://youtu.be/qsoWChXebqA
That winching operation didn’t look very clever
Current: D4 HSE
Previous: BMW Z4M Coupe
Previous: Land Rover Defender 90 CSW Td5
Previous: Land Rover Discovery Td5 ES
6th Feb 2019 7:56 am
AndrewS Tarquin of the Desert
Member Since: 06 May 2005
Location: Y...... because I can
Posts: 10441
DG wrote:
Don't forget that DSC is never really switched off
Agreed when competing in Morocco in Discovery 3's and driving the sand dunes in Macontierra (not sure if thats spelt correctly) we very soon realised that the DSC does not switch completely off. If the car detects severe body roll it will back the power off.
You very quickly learn where the DSC parameters are and drive under them.
Not sure why pressing the DSC or Dynamic Stability Control switch will help when the vehicle is sat spinning motionless in a grassy field?
Getting the TC to react is the key, if all 4 wheels are turning at the same speed the TC has no idea that the car is motionless, by applying power hopefully you will make a wheel spin faster than the others, the TC will then kick in and hopefully you will start making progress.
Standard or off road tyres may or may not make a difference no more than two different standard tread patterns will. If you are lucky at that moment in time if the type of mud suits your tyres you wont have a problem.
The only reason I use off road tyres is they have a stronger side wall. I have seen cars with standard worn tyres get further than a car with aggressive off road tyres. Its all about understanding whats going on and technique.In the Beginning there was nothing, which exploded.
6th Feb 2019 8:24 am
Erea
Member Since: 19 Mar 2012
Location: Munster
Posts: 1509
Years ago we learnt to drive in my fathers cortina in the fields. If a wheel started to spin we would pull the handbrake and it would act as a diff lock and lock up the rear axle and away we would go 👍
6th Feb 2019 9:07 am
A.J.M
Member Since: 31 Oct 2009
Location: Carluke
Posts: 2847
As others have said, if there is no traction, you ain’t moving.
However, your route may or may not help.
We all generally like to take the most direct route for stuff, if you walk the field to see which areas are soft and which ones aren’t, you may be able to link up a route to avoid the worst areas.
I’ve had to recover my old bosses D3 and trailer from a field a few times because they hadn’t got the lines right and bogged. Firmer ground and Duratracs on mine helped get them free again.
In general, I turn DSC “off” for off road stuff I feel I would need the benefit of not having it slap the wrist.
I’ve also been sat there, all 4 wheels slowly turning, going nowhere and the cars electronics still trying to make it move.
6th Feb 2019 9:19 am
DG Site Moderator
Member Since: 12 Dec 2005
Location: The Gaff
Posts: 50978
TOPix wrote:
DSC uses the brakes and powertrain torque control to
help maintain the lateral stability of the vehicle. While
the ignition is on the DSC function is permanently
enabled unless selected off by the DSC switch. Even if
DSC is deselected, driving manoeuvres with extreme
yaw or lateral acceleration may trigger DSC activity to
assist vehicle stability.
As well as never quite being off ..we must remember that DSC is really designed to deal with lateral forces ...and you have to reach the threshold of those lateral forces for it to intervene.....if you are sat stationary in a field with 4 wheels spinning then it shouldn't reach anywhere near that threshold ...whereas if you had managed to get moving swiftly but say sideways ...then it might.
6th Feb 2019 9:39 am
gstuart
Member Since: 21 Oct 2016
Location: kent
Posts: 14120
Hi
Apologises asking a daft question
Does it ever help to select low in these circumstances , turning DSC off, or wouldn’t it make a blind bit of difference plse
Thks as always
6th Feb 2019 2:10 pm
Robbie
Member Since: 05 Feb 2006
Location: ¯\_(ツ)_/¯
Posts: 17932
It's always worth a try, especially if you find yourself robbed of power or find power and momentum is lost with yaw.
Range selection is another topic, especially if gradient or towing is involved.Land Rover - Turning Drivers into Mechanics Since 1948
Member Since: 19 Mar 2012
Location: Munster
Posts: 1509
Of course if you are properly stuck and need to get out on your own steam you could tie a piece of timber to a wheel, but make sure the ropes don’t catch on the brakes.
Click image to enlarge
Or here is a YouTube of it in action
6th Feb 2019 7:49 pm
gstuart
Member Since: 21 Oct 2016
Location: kent
Posts: 14120
Robbie wrote:
It's always worth a try, especially if you find yourself robbed of power or find power and momentum is lost with yaw.
Range selection is another topic, especially if gradient or towing is involved.
Hi
Many thks as always
6th Feb 2019 9:10 pm
Gareth Site Moderator
Member Since: 07 Dec 2004
Location: Bramhall
Posts: 26772
So today, I found myself on an empty ice covered car park! Mmmm donuts I thought 👿
First attempt with normal operation was most disappointing. Just a lot of noise and grinding from the TC doing its best to melt the brakes.
Then I selected Sand mode and disabled the DSC. I got going then applied full lock and a boot of acceleration, the results were very satisfying. Managed to get it doing a number of 360 turns with the car staying roughly on one spot. The TC was still applying some brake, but it was letting it go a little bit.
Brakes were smokin afterwards though!
NB Private car park, and if my Blackvue wasn’t knackered I’d show you a vid!
I carry some remnants of the big plastic bread delivery trays I found at side of the road. ( honest ) ... weigh all and take up very little space but are ideal for this scenario. Also used them in the past to stop VX Carlton sinking through the grass at a friend's caravan.
Another trick is to throw a tow rope under a wheel..
Dean
====================================
2011 D4 XS - OBD port protection, RLD spare wheel protector, All LED interiors lights, Timed Climate enabled, iiD tool paired.
2011 D4 Landmark - Stolen from same dealer before I paid for it
2011 D4 GS - Stolen whilst at dealer ... All LED interiors lights, DRLs, Spare Wheel protector.
1996 300Tdi - Eaten by tin worms
6th Feb 2019 9:48 pm
Gary_P
Member Since: 03 May 2016
Location: Kent
Posts: 1656
Sorry to revive this thread, but have short drive on wet grass coming up. I’ll obviously select Grass/gravel and snow but in addition to this the off road manual seems to indicate starting off in 2nd or 3rd gear. I’m not sure the car will not over ride me when I try this with the flappy paddles but going to give it a go. What do you think?
I’m also thinking of using low range too. Didn’t get any firm opinions on low range for slippery grass from this thread, again interested in experiences of giving this a go.
I like the rubber use of the rubber mats idea if absolutely required.
Thanks in advance
CheersGary
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swmbo just glares at me for playing 
all and take up very little space but are ideal for this scenario. Also used them in the past to stop VX Carlton sinking through the grass at a friend's caravan.
... All LED interiors lights, DRLs, Spare Wheel protector.
