ChampCar Tech Desk

The tech desk is used to ask technical questions and is not to be used as a post race tech line or to phish for how others built their cars.
Please reference the BCCR as most questions submitted to the TechDesk can be answered by reading the BCCR.
You can download the BCCR here: https:champcar.org/rules

2021-01-03 - C4 Corvette Roll Cage

Q.
I am building an 89 Corvette I plan to race in ChampCar Endurance Series. As I am designing the roll cage I can see that due to the configuration of the car I don't think I can do a traditional main hoop, since the floor comes up directly behind the driver seat.

Question is can I attach the door bars to the floor behind the driver seat as shown in the attached picture? And if so is this the preferred method for a C4 Corvette cage to be designed?
C4 door bar example


A.
Looks good.
Base plate needs to be bigger to center the door bars on the plate. Definitely prefer the single bend door bars vs. the reverse bend.

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