Most (if not all) the FV I've seen have a 2x4 (or 1x4) bottom frame. You don't seem to see similar structures in other classes, like FF, FC etc... Anybody knows why this structure is so specific to FV?
The 2x4 structure seems quite heavy, and not that rigid torsion-wise. You would think spaceframes would provide much more rigidity.
I read on a FV historic website that apparently the 2x4 bottom was introduced with the Lynx B, because it was easier to manufacture and fix. Why have builders stick to that while other classes have been using spaceframes? ? Is it also that the 2x4 frame is much easier to couple the VW engine/transmission to the chassis?
FV series in Australia and England all use spaceframes, the 2x4 structure seems to be typical to North America.