Thread: Cross linking sls airbags

I think you will have to do it the other way around. Pump air into the airbag to push the wheel down on the non loaded side and let the air out of the wheel that is climbing the rock (loaded) so that the tyre can tuck into the guard space.

I suspect that you will have to disable the SLS, pump the bags up to a suitable level and then the crosslinking will take care of trying to equalise the pressure in the bags. This will force more air into the unloaded wheel and therefore help to stretch the airbag.

correct, you want to unair the uphill side.

wont work in the way that you will likely try to implement it as you will loose all of your lateral stability doing it (on any side sloping the air from the low side will shift to the high side and in corners the outside air will shift to the inside leaning the vehicle further out) and using the existing system to do it with the same way as larger trucks that have this feature do will quickly drain the air tank and burn out the pump. (and most trucks have a solid axle)


Air bag fitted trucks have a pair of control rods one for each sides set of bags and the system is live outside of a given percentage of movement (usually about 5 degrees of body roll) the electronics of the rover system just allows a couple of seconds delay before trying to do something once the sensor is out of range for a given position (more or less). The big difference is the size of the airtank on a truck that runs the airbags, the flow rate at pressure and durability of the pump.

What you can do is make a manual break out box that gives you control of the existing solenoids and disables the computer then you can just manuall inflate the bags for the wheels that need it.

I have been looking at this the last few weeks and one thing that I think will hold the idea back is getting the flow rate between the bags. With the 4mm O.D air line that is currently used, the cross linking will work to slow for real world application. Then you need to consider excessive body roll on side slopes?????

Cheers,

Tim.

Originally Posted by Blknight.aus

(on any side sloping the air from the low side will shift to the high side and in corners the outside air will shift to the inside leaning the vehicle further out)
.

This is exactly the problem with crosslinking - you need to be able to turn it off - and quickly.

In 98-99 I fitted a complete RRC EAS system to a Disco1 and experimented with cross linking on the rear - travel & load sharing across an axle worked really well, air flow wasn't a problem but stability was, as Dave describes. For safety you really need some smarts monitoring the four corners. I had it all operating electrically and could shut the link off and re-enable the EAS functionality with a single switch - with a air tank in the system it would recover nearly instantly. Cross linking was a lot of work for not much gain (and a big problem) - achieved more by simply disabling the EAS controller.

In the d2 if the SLS is disabled (and bag pressures maintained) you will see great improvements - you will have more travel than coils due to the characteristics of air springs, thats what I've done with my D2 and this time I didn't bother with the crosslink.

Originally Posted by harlie

In the d2 if the SLS is disabled (and bag pressures maintained) you will see great improvements - you will have more travel than coils due to the characteristics of air springs, thats what I've done with my D2 and this time I didn't bother with the crosslink.

Thanks a lot - that was my plan B,you used a switch to relay or the fuse,in the fuse box in the engine compartment - or u just unplug the relay

Originally Posted by Disco_ute84

I have been looking at this the last few weeks and one thing that I think will hold the idea back is getting the flow rate between the bags. With the 4mm O.D air line that is currently used, the cross linking will work to slow for real world application. Then you need to consider excessive body roll on side slopes?????

Cheers,

Tim.

not only D2's,,
The cement Agi's at work have a habit of laying down,,
apparently the crosslinked air doesnt seem to travel fast enough,,,