Add 200psi of Nitrogen into the air jacks and see what happens.
I have two inlets so I can split between front and rear, there’s not many times when I would need to lift the front, it will be predominantly the rear only but its nice to have the option.
The air jacks themselves were a collaboration between myself and Murray Coote from MCA suspension in QLD, I pulled apart an old V8 supercar jack and drew the internals, then Murray organised the internal chromoly shaft, the spring was made at King springs, the outers were redesigned to use shock tubing, I machined all the alloy top and bottom hats, then they were plated and tapped to run M10x1 brake fittings.
The lines are AN4 braided lines and alloy Earls ends, I wrapped the course braid in heat shrink to make sure it does not rub against anything.
Oh and those little CNC top mounts are actually motorcycle 54mm fork to damper mounts that were cheap and easy to come by, just a neat little solution to running full steel tubes.
Its a good feeling to plug the line in and be able to work on it easily, now to make safety tubes to wrap around the jacks for hot pit stops.