Constructional Criticism Please :)

[Norm Peterson]

Perhaps I should think about tying the roll cage in to the mount. A Y coming off the middle cross bar or the inner bars that run from the main hoop to the floor.

That's a much better approach. Can you tie the Y (or two separate diagonal tubes) directly to the D/S loop? I've seen variations of that in a few race car pics, and I might have one D/L'd and saved somewhere. Anyway, make sure that you are loading all of the tubes in tension/compression rather than in bending. Don't forget to leave enough room around the pickup bracket for access to and removal of the bolt.



Incidentally, SVSA is Side View Swing Arm, which is a virtual link that effectively describes the movement of the axle as seen in side view. It pivots about the Side View Instant Center (SVIC). Since the SVIC moves around a bit with suspension motion, the SVSA is not of constant length, and the resulting side-view axle motion is therefore not a true circular arc.

Norm