Changes in the Door Bar Rules??

[Tyson]

yeah, im not talking the weight benefit. just why would the CRB allow this change since they have a history of only changing things on the basis of safety or factual error.


i suppose the only difference is that it changes the load path on a straight T bone more directly to the vertical bars (pushing instead of pulling the welds) but that doesnt mean anything to make a safer cage for the driver on the other side of the car. thats why im asking...

[Knestis]

It's off to get the cage installed by Competition Cages in Hillsborough, NC...



Look for our doorbar treatment to be a natural - and legal - extension of what we learned from the one in the pic above. That vertical element right next to the driver's left hand, by the way, resolved all of the load of our roll's impact above the A pillar strictly in compression.

There is NO evidence of deformation in the cage structure...

K

[lateapex911]

Originally posted by Tyson@Sep 26 2005, 08:43 PM
yeah, im not talking the weight benefit. just why would the CRB allow this change since they have a history of only changing things on the basis of safety or factual error.
i suppose the only difference is that it changes the load path on a straight T bone more directly to the vertical bars (pushing instead of pulling the welds) but that doesnt mean anything to make a safer cage for the driver on the other side of the car. thats why im asking...

[snapback]61248[/snapback]

Well a lot of cars have nothing on the pass side. Perhaps the CRb did it witha big picture in mind...it allows touring cars that have the door bars as required to migrate into IT, (if there is such a migration possible, perhaps it's paving the way for future moves),

and the weight break was seen as a "carrot" to get guys to put something...anything(?) in.

As it is, it is so open as to be very effective, IMHO.

[turboICE]

I would disagree that anything can be put in NASCAR style is defined and must intrude into the door cavity, not just any ole door bar is going to permit gutting.