Thread: Want to reinstate EAS in 93RRC

As the current owner of a hydramat equipped rangie. I can attest that their self-levelling ability is limited. It can prop the back end up maybe 1-2 inches more than it would be sagging on the springs alone.

Better than not having one, but in no way a substitute for self levelling (or indeed manual levelling) air suspension.

I am comparing the ride of the 93 classic on springs to the D2 with springs on the front and air on the back. I am not sure of the technicalities of design etc. or what improvements have been made over the years but I reckon the D2 ride is much nicer than the classic. The classic however is my car of choice so I want to refine the ride a bit if I can.
Seems to be as with a lot of things ride comfort and performance is a personal thing. Might have to get an LSE one day for the complete Luxo Barge experience

So,,,, why not put the rear of your Rangie onto 'bags. Should'nt be tooo expensive. - Then drive around and listen to what your seat tells you...
This should give you as close as you can get to the Disco, and a direct comparison F to R of how steel/air handle the lumps & bumps.

Arnotts air-springs are supposed to be longer travel, as well as being firmer at highway heights (for handling). The only downside is... if you spring a leak, the bag itself cannot be replaced. - The whole assembly goes in the bin. With the standard LR air-spring, the bladder/bag/tube/balloon is a replacable item.

One of the 29 seat busses I drive has a smaller turning circle than the LSE.

My 93 RR with EAS caused havoc and finally had installed a "manual" system, this ended up being;
Dash Mounted guages (2) with 2 needles each (front and rear) plus four toggle switches for each corner, works of ABS compressor and RR OEM compressor as (reserve)..bit complicated with all the plumbing but provides
adjustable ride height with loads or off road (front and rear levelling and can adjust each corner)..

An easier and simple way is to run 4 separate air lines (from each bag) and fit
to air inlet in engine bay or external then simple lower by releasing pressure or top up using an onboard or portable compressor....this is the simple fix, down side is measuring the height of each corner tyre to mud guard, can be slightly overcome by using a airpump with pressure gauge.

Offroad the system in my vehicle allows forward/aft - side to side or individual corner adjustment...anyway hopefully food for thought into the mix of airbags or springs or polyairs

Originally Posted by alltrans

My 93 RR with EAS caused havoc and finally had installed a "manual" system, this ended up being;
Dash Mounted guages (2) with 2 needles each (front and rear) plus four toggle switches for each corner, works of ABS compressor and RR OEM compressor as (reserve)..bit complicated with all the plumbing but provides
adjustable ride height with loads or off road (front and rear levelling and can adjust each corner)..

An easier and simple way is to run 4 separate air lines (from each bag) and fit
to air inlet in engine bay or external then simple lower by releasing pressure or top up using an onboard or portable compressor....this is the simple fix, down side is measuring the height of each corner tyre to mud guard, can be slightly overcome by using a airpump with pressure gauge.

Offroad the system in my vehicle allows forward/aft - side to side or individual corner adjustment...anyway hopefully food for thought into the mix of airbags or springs or polyairs

That's almost what I had in mind. What pressures does your system run?

Now, if you want to be really complicated... and this is more for off-road use where conditions are constantly changing.

Use a microswitch-operated joystick to access each of the 4 corners on their own, or pairs.. Front or rear pair, or either side pair.

Have a momentary on-off-on pickle-switch on top, this is to enable INflation (of selected bags) or DEflation, by opening either FILL or DUMP valves.

Seeing as your variable load (junk, tools, fuel, substantial friends in the back seats...) mainly affects the rear pressures, you'd be able to use the FRONT pressure gauges to estimate ride height. Then use a Bulls-Eye spirit level to balance. Or headlights on low beam.

If you're using the RR valve body, be aware that the valve (solonoid coils) are designed to be pulsed with a 50%, high frequency square wave. This is to limit heating. If you feed them with DC, there may be a reliability issue. Eventually. - Someone else may know more...

Or use aftermarket air-solonoids which are ok on constant 12DC.

- There is no limit to how complex you could make a fully manual system...

Originally Posted by superquag

Now, if you want to be really complicated... and this is more for off-road use where conditions are constantly changing.

Use a microswitch-operated joystick to access each of the 4 corners on their own, or pairs.. Front or rear pair, or either side pair.

Have a momentary on-off-on pickle-switch on top, this is to enable INflation (of selected bags) or DEflation, by opening either FILL or DUMP valves.

Seeing as your variable load (junk, tools, fuel, substantial friends in the back seats...) mainly affects the rear pressures, you'd be able to use the FRONT pressure gauges to estimate ride height. Then use a Bulls-Eye spirit level to balance. Or headlights on low beam.

If you're using the RR valve body, be aware that the valve (solonoid coils) are designed to be pulsed with a 50%, high frequency square wave. This is to limit heating. If you feed them with DC, there may be a reliability issue. Eventually. - Someone else may know more...

Or use aftermarket air-solonoids which are ok on constant 12DC.

- There is no limit to how complex you could make a fully manual system...

I was going to have a limit switch on each corner which lit an LED when it was at the desired ride height. Simple and visual feed-back. Load, set, drive.

"...I was going to have a limit switch on each corner which lit an LED when it was at the desired ride height. Simple and visual feed-back. Load, set, drive. .."

An elegant solution.