good thread.

why all the fuss about the drop links not being vertical? it just changes the leverage ratio so that a thicker bar is needed to get the same torsional stiffness as if the links were vertical (and mounted at the same point on the tca)

i agree with what i think gareth is trying to say - the principles of action of a proper grp a ARB (or other component) are no different to a comp brake (or rally design or whoever) ARB. the fine details of them may give important differences in the control of the suspension - but the PRINCIPLE is the same.

for example - in the case of a compression strut, it's principle of action is to prevent fore and aft movement of the hub. the length, stiffness, joint, mounting points etc will all have an influence over how it does that job, so one may be 'better' than another (or may just suit a different driver/circuit/surface/weather than another).