SII/SIII trialling type of thing!

[OnTheOverrun]

300bhp/ton said:

OnTheOverrun said:

The relative spring rate versus the weight of the vehicle is the same on a standard LR and an AP because although the AP has softer springs, it weighs less.

iirc the common used name "lightweight" is actually a bit of a misnomer for an Air Portable Land Rover, as they actually weigh slightly more than an equivalent Series II/III.

It's the fact they can be stripped quickly of doors and bonnet and such that they can end up lighter for transport.

interweb said:

With all body panels etc. fitted, the Lightweight was actually heavier than an 88" due to all of the extra brackets and fasteners required to make panels demountable.

http://www.lr-mad.co.uk/light.html

Nonetheless, the seven leaf AP springs when used to replace the standard 9 leaf springs on a non-AP II or III provide a softer ride off-road and a little more articulation.