Thread: L322 EAS change lockout with trailer

Thank you for the warm welcome, harlie! Credit where credit is due, tho: I actually didn't have anything to do with the development of the EASControl - that was the 2 clever Canadians Christian and Patrick. I have been mainly responsible for the commercial side of GAP Diagnostic.

You are definitely correct that there is surely a pressure difference in the bag at 2 different heights. But it is insignificant - and the point I was trying to make is that this is not the cause of bags popping.

There are numerous factors that affect the actual pressure in the bags at a given length including the construction of the bag itself, the angle at which the bag exerts pressure on the suspension, construction of the suspension, etc. In theory, though, with a constant static load suspended at different heights by compressed air, changes in height will all result in the same pressures as the static load is always exerting the same downward force (weight).

I can imagine that with the loads you guys were working with you were seeing relatively significant pressure fluctuations, but taken as a whole, once the bag was within its operating range the differences at rest (static) should not have been too extreme.

And you are definitely right on the loads placed on various suspension components at heights the suspension was not designed for. And, an item that we have spent quite a bit of time worrying about: safety. Not only the raised CG of the vehicle, but the ability of the suspension to cope with road imperfections can be severely compromised by raising (or lowering) a suspension. A vehicle is safe and controllable when the tires are in contact with the road - even if that road is a pothole or a berm. If a tire is in the air you are not driving, you are on a trajectory.

Changing the height of the EAS without changing anything else on the suspension, regardless of how its done (EASControl, rods, recalibration...), dictates moderate changes (def less than 2"). And the faster you go, the closer to stock height you should be. For your own sake as well as for the others you share the road with.

Thanks Gary! Nice to be here. Haven't had much time to look around, but I seem to feel very much at home - even upside down.