radders89
Member Since: 30 Aug 2010
Location: West Sussex
Posts: 1051
  
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Used the wading sensors in anger for the first time this afternoon and noticed that they only work up to 6mph. Seems a bit low to me if I'm trying to create and maintain a bow wave in front of the car.
Thoughts from those more knowledgable?  MY15 D4 SDV6 HSE Corris Grey - Gone
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 5th Jan 2016 5:10 pm |
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ronp
Member Since: 29 Nov 2006
Location: North Yorkshire
Posts: 15264
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Would reckon that that's around the speed you'll drive to create (& maintain) a bow wave.
But key question is - where are these sensors located, as the water will be higher at the front (as you push the wave) than it is behind it ? ...... always on the road less travelled 🚧
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| 5th Jan 2016 7:31 pm |
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radders89
Member Since: 30 Aug 2010
Location: West Sussex
Posts: 1051
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Sensors are located on the underside of the wing mirrors Ron. It wasn't very deep so no chance of any bow wave but just seemed really slow to enable them to activate. MY15 D4 SDV6 HSE Corris Grey - Gone
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Club Sandwich
Women... Can't live with em, can't kill em...
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| 5th Jan 2016 7:43 pm |
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MrH
Member Since: 08 Aug 2007
Location: lost in the forest
Posts: 7754
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Sensors are in the wing mirrors, not yet had chance to test ours out, but will do sometime soon if this fecking weather continues  LRs are a fond memory, apart from the maintenance.
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| 5th Jan 2016 7:45 pm |
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Dannyson
Member Since: 14 Oct 2014
Location: Newquay, Cornwall
Posts: 820
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From what I remember from the LRE day a couple of weeks ago - one should not try and create a bow wave unless the water is very very deep..... much better to crawl through it very very slowly. But I'm sure someone with more knowledge of deep water 'wading' will be along shortly...... 2016MY Discovery HSE - Black
2009MY Toyota Land Cruiser (Lc4) - Black
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| 5th Jan 2016 11:20 pm |
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DG
Site Moderator
Member Since: 12 Dec 2005
Location: The Gaff
Posts: 50978
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You should easily be able to create a sufficient bow wave at a swift walking pace so 6mph would be at the upper end of that.  21 year LR veteran > D2 GS 2003 > D3 S 2006 > D3 HSE 2009 > D4 HSE 2013 > D4 HSE 2015 > D5 HSE 2018 > DS HSE R-Dynamic P300e 2021
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| 5th Jan 2016 11:50 pm |
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Brian_DL13
Member Since: 25 Aug 2013
Location: Teesdale
Posts: 1418
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How far ahead of the front wheels do the sensors actually sense ?
I'd have thought it would need to be a good bit ahead to be any use. 4mph = 1.8 metres per sec. Normal human reaction times would dictate that a couple of seconds would be needed to stop. So it would need to sense some 5 metres ahead of the wing mirror position to be any use.
Comments anyone ?
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| 6th Jan 2016 7:38 am |
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radders89
Member Since: 30 Aug 2010
Location: West Sussex
Posts: 1051
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That's a good point as I had always assumed that it only detects the water level immediately below the mirrors but of course if that were the case then you could find yourself too deep before you can do anything about it.
It would be interesting to know if there is any spec data on how far forward of the vehicle the sensors work. MY15 D4 SDV6 HSE Corris Grey - Gone
MY05 D3 TDV6 SE Zambezi silver Auto Alpaca leather - Gone
MY02' Seat Leon 1.6s Metallic Black cloth trim with a hint of mould
Club Sandwich
Women... Can't live with em, can't kill em...
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| 6th Jan 2016 8:48 am |
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DigitalJunior
Member Since: 22 Nov 2008
Location: Cumbria
Posts: 4401
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I don't need much of an excuse to roll out my short wading vid out 
SOLD - 23my Range Rover Sport D300 Dynamic SE
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| 6th Jan 2016 9:25 am |
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RDR
Member Since: 24 Mar 2013
Location: Derbyshire
Posts: 2260
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Think it just detects directly below the mirrors. I regularly wade upto mid door height and my sensors don't work unless it's deeper than the side steps.
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| 6th Jan 2016 9:55 am |
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Brian_DL13
Member Since: 25 Aug 2013
Location: Teesdale
Posts: 1418
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If so, it's not a lot of use really is it ? 
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| 6th Jan 2016 10:04 am |
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CFB
Member Since: 02 Dec 2005
Location: Bradford, West Yorkshire
Posts: 6100
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Dannyson wrote:From what I remember from the LRE day a couple of weeks ago - one should not try and create a bow wave unless the water is very very deep..... much better to crawl through it very very slowly. But I'm sure someone with more knowledge of deep water 'wading' will be along shortly......
Yep, this is how it is taught these days, a slow crawl rather than the bow-wave. I guess a lot depends on the vehicle you are driving, the type of water you are crossing etc.
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| 6th Jan 2016 10:14 am |
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DG
Site Moderator
Member Since: 12 Dec 2005
Location: The Gaff
Posts: 50978
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radders89 wrote:
It would be interesting to know if there is any spec data on how far forward of the vehicle the sensors work.
It doesn't detect anything other than the depth below the mirror.
The whole point about wade sensing is to give a depth measurement at that particular moment.....it can never forecast whether you are about to submerse into the depths  21 year LR veteran > D2 GS 2003 > D3 S 2006 > D3 HSE 2009 > D4 HSE 2013 > D4 HSE 2015 > D5 HSE 2018 > DS HSE R-Dynamic P300e 2021
Last edited by DG on 6th Jan 2016 11:39 am. Edited 1 time in total
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| 6th Jan 2016 10:43 am |
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Brian_DL13
Member Since: 25 Aug 2013
Location: Teesdale
Posts: 1418
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So ... I'm left wondering what is the point of it - unless, I guess, you're in pitch darkness and so can't see out of the window
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| 6th Jan 2016 11:10 am |
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DG
Site Moderator
Member Since: 12 Dec 2005
Location: The Gaff
Posts: 50978
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The point of it is to tell you the depth of the water   21 year LR veteran > D2 GS 2003 > D3 S 2006 > D3 HSE 2009 > D4 HSE 2013 > D4 HSE 2015 > D5 HSE 2018 > DS HSE R-Dynamic P300e 2021
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| 6th Jan 2016 11:40 am |
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