[Dominik]

"The important thing to watch for is the toe change."

yes,
and "morris" did go into that extensively in his build-up at the gasholes.com forum.
get a weekend off, some beer and read...

the angle of the drag link is also cruicial, for anti-squat.

for the toe issue I got more humble opinions:
in roll
the inner wheel may toe out in roll helping corner entry, the outer wheel in. but the sum of both should not toe out!

in bump
if the outer wheel toes in in roll, that also means both toe-in in bump (out in droop)
but in bump we work together with a castor change when the wheel moves up, compensating the toe change (totally or slightly?)...
the rear upright turns clockwise looking from the side (left is front of the car)

same applies for droop, when castor changes in the other direction...

the 427s rear suspension was designed to help traction at corner entry (in roll) and at corner exit (with anti-squat, meaning more castor under acceleration).

the safer way to design your rear suspension is make everything level (as SPF did).
the position of the chassis mount for the drag link is VERY cruicial.
not the angle in the CR drawings, but the distance from chassis centerline, axle centerline and height from chassis CL.

the 427s specs from the 60s are still state of the art, used nowadays in cars like the Viper and the Lamborghini.
not the same suspension layout, but the behaviour.

comment?

dominik