Calaber
Nil Bastardo Carborundum
- Joined
- Nov 29, 2007
- Messages
- 4,334
- Reaction score
- 1,357
- Points
- 113
- Location
- Lower Hunter Region NSW
- Members Ride
- CG Captiva 5 Series 2
Reaper
I suspect the reason "A" roof pillars have grown to be so thick is because of the angle they are now laid back at. In earlier models, where the pillars were more upright, they were able to provide the necessary strength to support the roof in rollovers because they were at a more suitable angle to withstand the stresses involved.
As the windscreens have been laid back further and further for aerodynamics and to reduce fuel consumption, thin pillars would not be able to maintain the necessary strength and rollover resistance, hence they are thickened to enable the modern vehicles to meet ADR's and other safety regs whereever the cars are marketed.
The HQ had the thinnest "A" pillars of any mass produced four door sedan in the world at the time of its introduction, because GMH designed it to comply with new "field of vision" regulations which were supposed to be introduced sometime after it was released. Those regs didn't eventuate during the lifetime of the HQ-HZ - it's obvious from the pillars on the VE that they never eventuated!
By comparison with the VE, the HQ pillars are almost upright. Obviously, at that angle, they could be thin, provide good vision for the driver and still provide the necessary structural rigidity. Bloody shame the new cars can't have pillars that slender, isn't it?
And on the comments you made regarding the poor three quarter visibility, I seem to recall a certain Cousin on this forum who was adamant that there were no blind spots on the VE and that all you had to do was use your mirrors and move your head. Yeah, like one of those parcel shelf nodding dogs!
I suspect the reason "A" roof pillars have grown to be so thick is because of the angle they are now laid back at. In earlier models, where the pillars were more upright, they were able to provide the necessary strength to support the roof in rollovers because they were at a more suitable angle to withstand the stresses involved.
As the windscreens have been laid back further and further for aerodynamics and to reduce fuel consumption, thin pillars would not be able to maintain the necessary strength and rollover resistance, hence they are thickened to enable the modern vehicles to meet ADR's and other safety regs whereever the cars are marketed.
The HQ had the thinnest "A" pillars of any mass produced four door sedan in the world at the time of its introduction, because GMH designed it to comply with new "field of vision" regulations which were supposed to be introduced sometime after it was released. Those regs didn't eventuate during the lifetime of the HQ-HZ - it's obvious from the pillars on the VE that they never eventuated!
By comparison with the VE, the HQ pillars are almost upright. Obviously, at that angle, they could be thin, provide good vision for the driver and still provide the necessary structural rigidity. Bloody shame the new cars can't have pillars that slender, isn't it?
And on the comments you made regarding the poor three quarter visibility, I seem to recall a certain Cousin on this forum who was adamant that there were no blind spots on the VE and that all you had to do was use your mirrors and move your head. Yeah, like one of those parcel shelf nodding dogs!