Quote Originally Posted by pete376403 View Post
There was a mechanical system that Kawasaki used for a while on race bikes (don't think it ever made it to roadies) - the calipers were on a mount that pivoted around the axle, and were connected by links to the bottom of the triple clamp. When the brakes were applied the calipers tried to rotate with the disks and so pushed up front end of the bike up (similar in effect to leading link forks)

Simple and reliable. What would be wrong with such a system?
I think in all reality a lot of these systems were to a large degree compensating for the very poor compression control in the forks of that period. ( Although a hell of a lot of low to mid price bikes to this day still employ terrible damper rod forks ) There must inherently be a certain amount of controlled weight transfer and therefore also a change in geometry to effect turn in. On acceleration there must also be just enough rearward weight transfer. Well designed and tuned cartridge forks ( especially those with bending shim stack midvalves) and rear shock absorbers carry out these duties very well. That is largely why such devices as you mention have pretty much disappeared. You dont tend to see them on world level racebikes.