[Bruce88]

[QUOTE=hgs_notes;3225804]I think I can answer that. If all of the frame cross members were the same length and perpendicular to the frame rails, the rails would be able to move forwards and backwards. Having an unequal length crossmember will stabilize the frame like putting a X pipe in a roll bar. The triangulation adds rigidity.


(Hgs_notes) I’ve been looking at this cross member and think it might have something to do with the fact that the rear end centering bar (Tracking Arm) is attached to the frame just below this cross member. The tracking arm comes over to the frame at an angle and the cross member goes over to the RH frame at the opposite angle to the tracking arm. This might be to distribute the tracking arm load equally across both frame rails to keep the frame rails square under load. But with out talking to the design engineer that designed this it’s just a guess.