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  #169  
Old 06-09-2015, 05:18 AM
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Re: WK2 Offroad

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Originally Posted by Bigskiddy View Post
Water bra? You got any pics or details on one of these. Tried googling and got ladies boobs...

Same here... but i was using urbandictionary.com instead of a google search.

I can tell you, I received a bit of a shock when searching for a "snorkel"

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  #170  
Old 06-09-2015, 06:09 PM
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Spent the weekend in the Brindabellas (Canberra) and surrounds. Started and finished like this.

2015-06-09 16.56.32.jpg

1 hour in I got a flat and busted rim. Did the 3 days on the steel spare. Was gunning it up a muddy rutted incline and struck a rock.


ForumRunner_20150610_090720.jpg

Learnt that it was best to go slow in the mud and let the car do the work. Didn't get stuck at all. Latitude tyres did okay, although once in a rut I had to stay in it.

Bit of snow.

ForumRunner_20150610_090805.jpg

Overall had a great time learning the capabilities of the car.
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  #171  
Old 06-09-2015, 08:25 PM
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Re: WK2 Offroad

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Originally Posted by lt4vette View Post
I'd like some opinions on snorkels and the WK2. Until recently, there wasn't one available, and I sort of rationalised that I didn't need one because, one, I have quadralift so can get a fair bit of extra height, and, two, I read a few comments that snorkels don't help much with modern 4WD's because the computers will get flooded before the engine, so why bother?
I had the same view, but after seeing some pics of carnage at eli creek on fraser island I'm thinking about getting one.

The actual wading depth is 20 inches, but it is rated for 30 mins at that depth. Many have driven 800-900mm (the height of a tyre, the air intake is 1060mm with 65 profile tyres and QL to max) without problems. But as others have said, you don't want to dip your nose in at pace and lift water up over the passenger headlight.

There was a post from Dave at uneek over on ausjeep:
Quote:
we've now fit both Murchisons and Airflow at Uneek and I have to say the Murchison one is miles better. A few points
1. Airflow one has a huge head but a gets really small right near the air box (like half the size of the Murchison one) So i'd say probably twice if not three times the airflow from the Murchison one.
2. Airflow one can be noisy under heavy acceleration, whereas the Murchison one is pretty quiet
3. Murchison one fits about an hour quicker
4. I'll leave aesthetics up to the beholder.
WK2 Snorkel - Page 10 - AUSJEEPOFFROAD.COM - AJOR

The Murchisons one does use flexi hose, which may be a concern to some.
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  #172  
Old 06-09-2015, 11:10 PM
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Re: WK2 Offroad

Thanks Benn0 - that's a very interesting thread.
Russell
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  #173  
Old 06-12-2015, 06:18 AM
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WK2 Offroad

Heading out to Julimar Forest tomorrow with 4wd club of WA for a training day. Looking very much forward to trying the Jeep out on some hill climbs and hopefully some mud, though the recent rain was hit and miss here.


Cheers, Simon
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  #174  
Old 06-13-2015, 09:56 PM
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WK2 Offroad

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Stunned at how effortlessly this thing scrambles up a loose steep hill!

Cheers, Simon
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  #175  
Old 06-13-2015, 11:37 PM
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Quote:
Originally Posted by Barboots View Post
You were well advised.

I find 12psi or thereabouts is a reasonable pressure for Load Range E 18"s in soft sand. I have a feeling that if I followed some of my previous adventures I'd end up with single digit pressures!

Cheers,
Steve
Guys, I thought that 18 psi was as low as you should go - maybe 15psi at most. 12?! No problems travelling at 12psi? Is it because 18" tyres can go lower psi than say 15" tyres? I'd like to know.
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  #176  
Old 06-14-2015, 12:01 AM
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Re: WK2 Offroad

Yeah, you're on the right track there Bruno.

A taller, high profile tyre has more leverage between the contact area and the rim, so it's more able to cause the bead to break... which results in rapid loss of pressure and often an ensuing PITA to clean out the sand to restore a good seal.

The other aspect is that a high profile tyre will deform more readily than a lower profile one, creating the longer tread contact patch which is desirable for soft terrain. There isn't much point exposing more of the "bulging" sidewall to damage than is necessary. The often perceived width increase is not where the benefit to flotation comes from.

Also bear in mind that the deformation which occurs is a function of the carcass strength and applied weight... as well as the profile. Then there's how the driver treats the deflated tyre, which is ultimately the biggest potential problem. Using "absolute" rules for pressure is a bit of a wank... there are no rules, just what works for a specific environment in the hands of a particular user.

Cheers,
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  #177  
Old 06-14-2015, 05:10 PM
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Re: WK2 Offroad

My E-rated 10ply Kumho MT types dont bag out at all at 18psi and will just dig holes. I now dont bother with anything more than 15 on sand.
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  #178  
Old 06-14-2015, 06:31 PM
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Re: WK2 Offroad

There is sand, and there is soft sand. I run 18 for firm sand and getting across the short access tracks to the beach, and up to the dunes. If it gets really soft and find I'm digging in I will go to 10. But then if I'm going back to the firm packed stuff I will inflate back up to 18.

The danger with very low tyre pressures is rolling the tyre off the rim with hard cornering and heating up too much on firm sand by driving too fast. I try to keep it to 60kph when running 18psi.

Tyres with an LT construction will handle the lower pressures better than highway tyres. The sidewalls are stronger.
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  #179  
Old 06-15-2015, 05:45 AM
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Re: WK2 Offroad

I would air down to 15psi. Not sure, with my /50 low profile street tires, that I'd go lower than that. Next time I hit the dunes I'll try 15psi.
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  #180  
Old 06-15-2015, 08:38 PM
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Re: WK2 Offroad

This is interesting, when I checked the BFG website regarding tyre pressures for my KO's, they say not to drop below 20PSI.. Yet it sounds like LT constructed tyres can go much lower. Who is right, and why would BFG say this if their product will go way lower than 20 without issue (and with better sand traction)


Cheers, Simon
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