Seriously Bogged

**Drizzle** · 5th March 2015, 04:38 PM

Originally Posted by coolum

Now the question - in a D3 with 18" 'What would be the absolute minimum pressure that be recommended to make sure the wheels stay on the beads and get you out of the soft stuff..

Yes --- bearing in mind its just to get you through the problem and then re-inflate.. I would not go off into the Tree roots afterwards as we know the sidewalls will only last seconds.

Would an 18" handle 8 lbs? for a short low speed run?

Taken from the AULRO Discovery 3/4 & RRS FAQ

"How do I drive in sand?
Select Sand mode in Terrain Response and ensure stability control (DSC) is switched off. Use low or high range depending on speed, and consider manually selecting gears, keeping the revs high in the soft stuff. Don't use HDC to descend in sand, come down on the gears, often 2/3 low or first high. Tyre pressure guide:

Rim size / pressure
17 / 16
18 / 18
19 / 20
20 / 22

You can go 50% lower than this in extremes but reinflate as soon as you can. Other variables for tyre pressure are weight and tyre construction. The tougher the tyre, the more you need to deflate it, and the greater the vehicle weight the less you can deflate.

All of the other sand driving techniques that can be found in many places apply.

Also have a read one of our classic threads -> http://www.aulro.com/afvb/d3-d4-zone...ing-wrong.html"

**coolum** · 5th March 2015, 05:32 PM

Sounds like the official Min is around 9 psi .

Any lower and you could be in trouble .. however if your bogged and have no help, I guess its no real risk to go lower till you can get out .. as your stuffed anyway.

But you could end up destroying the tyres I guess .

Sounds like 9 is the min for Me.
Thanks all

**Celtoid** · 5th March 2015, 06:11 PM

Originally Posted by Boggs

Finally put my D4 to the test on some very sandy tracks towing a camper trailer and got seriously bogged. (don't ask how.. embarrassing and irrelevant!). It was on a sunken sandy beachside track and the first time in three decades I have needed the assistance of another vehicle to get out. Normally on industrial vehicles I would have used the high lift jack to crank up each wheel but no hard points on this baby so didn't carry one. On board I had recovery mats, shovel and an exhaust jack. No good.. the bag just raised the chassis higher while the unbelievable suspension travel prevented the wheels coming off the dirt to get the mats under them. digging under the wheels just caused them to disappear into the hole.
I reckon you have to dig a hole metres deep to get the wheels off the ground!
When a bull bar becomes available for the MY14/15 models I will certainly be installing a winch and buying a sand plate.
As for the OEM jack.. what a piece of ****.. I wouldn't even try changing a wheel on the bitumen with that.. another item to be replaced.

Hi Mate,

Did you say recovery mats or do you mean MaxTrax (or similar)?

I got bogged right to the floor pan on Moreton Is years ago .... sand was like talc. I had Scorpion ATRs on (19") at 18 PSI. Sand mode on and DSC off. Rock Crawl did not work either. I 'fooled' the suspension into contingency height .... but the car just sank again.

When I backed out there was a perfect print of the D4 on the sand .... the whole underside.

I used MaxTrax to get me out. I only dug a tiny bit in front of the wheel (well back as I was reversing) and the Trax were at a pretty steep angle off horizontal and the tyre just bit after a little bit of movement and out she came (car). Sunk straight away again ....LOL...and had to dig to recover the Maxtrax but second attempt (with a fraction more Welly once clear of the Trax) and she kept going.

Probably a lot harder with a trailer.

Cheers.

**discotwinturbo** · 5th March 2015, 06:25 PM

I have been as low as 10psi on the factory 19's. Climbed out of a deep bog easily in rock crawl, but just before put her in emergency height.

On 18's the lowest I have needed is 12psi and nothing will hold her back....and that was with my camper on the back also with 12psi.

Brett.....

**BobD** · 5th March 2015, 06:27 PM

I think the worst recovery I have done with Maxtrax is my son in law's GQ Patrol on a beach south of Greenough. He followed a quad bike track onto a steeply sloping very soft loose sand beach down near the water. We used two Maxtrax under the front wheels and did about 20 shifts to get him back to the top of the beach. Each time the front and rear wheels went over the Maxtrax and then he stopped dead. We got him out though. Just took a long time and a lot of digging out the buried Maxtrax.

**NavyDiver** · 5th March 2015, 08:03 PM

I think anyone can get bogged at times on the amazing beaches in WA mate. I have many times saddly years ago now.

I would suggest you look at rock sliders. On my D3, when needed, I use a high lift jack on the sliders. It lifts both left or right side wheels and would beat a high lift jack on a bull bar in my experience. The OEM jack is not my cup of tea, I broke mine jack while knee deep bogged in mud 20km from help in the middle of a dry mud flat with nothing to winch off

Got out after a lot of round trips to a stand of trees 2km away with stuff to shove under my tires

The skinny rubber is the only reason I do not have a D4! If you can get down to 18inch the ballooning would be much better on yours which makes a huge difference in sand with vehicles which weight close to 3 tonnes even with out a trailer on.

I would love to get bogged at white hill again- as long as I have my fishing rods of course

**LandyAndy** · 5th March 2015, 08:15 PM

Originally Posted by Boggs

Finally put my D4 to the test on some very sandy tracks towing a camper trailer and got seriously bogged. (don't ask how.. embarrassing and irrelevant!). It was on a sunken sandy beachside track and the first time in three decades I have needed the assistance of another vehicle to get out. Normally on industrial vehicles I would have used the high lift jack to crank up each wheel but no hard points on this baby so didn't carry one. On board I had recovery mats, shovel and an exhaust jack. No good.. the bag just raised the chassis higher while the unbelievable suspension travel prevented the wheels coming off the dirt to get the mats under them. digging under the wheels just caused them to disappear into the hole.
I reckon you have to dig a hole metres deep to get the wheels off the ground!
When a bull bar becomes available for the MY14/15 models I will certainly be installing a winch and buying a sand plate.
As for the OEM jack.. what a piece of ****.. I wouldn't even try changing a wheel on the bitumen with that.. another item to be replaced.

Gordon mentions in his course that maxtracks work exceptionally well with the Terrain Response electronics.
Now you have it off your chest,can you disclose the embarrasing incident??? It is relevent to us newby D3/D4 owners,always good to know of pitfalls in advance.
Any pics????
Thanks
Andrew

**Blknight.aus** · 5th March 2015, 08:34 PM

4 psi if you're gentle

**scarry** · 5th March 2015, 08:44 PM

Originally Posted by LandyAndy

Gordon mentions in his course that maxtracks work exceptionally well with the Terrain Response electronics.
Now you have it off your chest,can you disclose the embarrasing incident??? It is relevent to us newby D3/D4 owners,always good to know of pitfalls in advance.
Any pics????
Thanks
Andrew

i got my D4 very badly bogged late one day on the track entrance on the eastern side of Moreton island.Sand was very dry and soft.

The fishing was great,the drive back not so good.

Brain fade was the issue

Not enough momentum,DSC left on

I should have known,have done heaps of sand driving in the D2,never had any worries.

Once the vehicle was bogged,i lowered the tyres from 18 to 12 psi,rock crawl,extended height.
Then an hour on the long handled shovel,and out it came.

If we didn't have the shovel,we probably would have been there for the night

Damm good exercise,we were both completely stuffed,no one came along to help.It was just on dark when we got out.

**coolum** · 5th March 2015, 08:47 PM

Can you tell on circumstances plz?

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is that from experience Dave?

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