LLAMS Operation

**Grentarc** · 23rd June 2016, 04:27 PM

Originally Posted by jonesfam

As the D3/4 is self leveling, so would increase the air in the springs if the weight is increased, you would have to think the suspension would be stiffer.
That said, the extra load on the more aired up springs might make the car feel the same?

BTW, I was under the impression that it was the rear of the car that did all the self leveling, but a few weeks ago I pulled up to take a wiz, left the car running & the front of the car lowered?

Strange machines these D3/4's. Seem to have a mind of their own & it's not always on this planet.

Jonesfam

The way the air springs work is not like the air bag helpers for coil springs where higher pressure equals stiffer spring - the air springs have a variable diameter piston inside which determines spring rate at any given height. The spring rate of an air spring only changes when the volume of air changes, not the pressure - ie. with car unloaded the pressure in the airbag stays the same, but volume increases to raise vehicle to offroad height. Pressure increases when you load up the vehicle up and it counteracts the extra weight to return to normal height.

And yes, the D3/D4 is 4 corner air suspension and levels each corner, whereas the D2 had only rear leveling capability on the 7 seat models.

**Graeme** · 23rd June 2016, 04:33 PM

I found the ride softer when lower but the distance to the bump-stops is less and therefore the ride can easily be considerably worse. I also found that the shocks are quite soft at slow shock movement speeds hence they didn't noticeable stiffen the lowered ride if driven slowly over roughish patches but soon stiffened on higher bumps that cause the shock piston to move faster. This is why I moved to the L322 with CVDs where shock travel speed is not necessarily tied to firmness.

**Grentarc** · 23rd June 2016, 04:46 PM

Yes, the only time I use the Llams low setting for comfort is on rough bitumen, traveling at 30-50 km/h. For fast dirt/gravel roads I use the medium (+30) as the suspension needs to have longer travel. I would not even try speed bumps at anything lower than normal heght

**LRD414** · 23rd June 2016, 07:08 PM

Originally Posted by Grentarc

Yes, the only time I use the Llams low setting for comfort is on rough bitumen, traveling at 30-50 km/h. For fast dirt/gravel roads I use the medium (+30) as the suspension needs to have longer travel. I would not even try speed bumps at anything lower than normal heght

Agree with all that. Access height only used over speed bumps in undercover carparks.

Scott

**Grentarc** · 23rd June 2016, 07:10 PM

Originally Posted by LRD414

Access height only used over speed bumps in undercover carparks.

We are lucky in Wagga that our undercover car parks are able to cater for a D4 in normal height.

**laughto** · 23rd June 2016, 07:59 PM

Originally Posted by LRD414

Agree with all that. Access height only used over speed bumps in undercover carparks.

Scott

And for getting elderly in-laws into and out of the car. Few brownie points for this.

Sent from my SM-G920I using AULRO mobile app

Tombie · 23rd June 2016, 08:18 PM

You lot are lucky!!! Many Adelaide parks I wouldn't contemplate going in at all... Llams -20 and lowered as well.

**Narangga** · 25th June 2016, 07:01 AM

Originally Posted by Tombie

You lot are lucky!!! Many Adelaide parks I wouldn't contemplate going in at all... Llams -20 and lowered as well.

Thanks for the warning. Defender was a no-go but I thought D3 may have been alright when we are down at Christmas.

Oh well it was made to enjoy the great outdoors

Tombie · 25th June 2016, 08:53 AM

There's a great open car park on North Tce at Eyres House opposite the hospital.

Thread: LLAMS Operation

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