Here is the opinion of NASA’s RM Regional Director …
Per the CCR, this is not a legal cage. Two items:
"There shall be only 1 mounting point per plate". The tube that runs between the vertical plate and the horizontal plate is attached in two places. The extra tube is for stiffening and does not meet the spirit of the SpecE30 rules. I’d give the person a warning that the cage may be subject to protest by another competitor.
More importantly, the required rear brace does not mount to the plate as required in 15.6.13 - therefore the cage is illegal. I would not issue a logbook to this car.
Dave
15.6.13 Mounting Points
The roll cage shall be mounted to the floor of the car in six, seven, or eight points. The cage shall not go through the firewall. The seventh and eighth points must attach to the firewall or front fender wells. All cage attachment points must be mounted to plates.
Each required cage bar shall terminate on a plate with a 360 degree weld to the mounting plate, except as specified in Section 15.6.14.B. There shall be only one (1) mounting “point” per plate. This point is defined as where the “required tube” mounts.
All additional tubes mounted to that plate must be mounted as close to the required tube as possible [Ref: (15.6.14.B )].
15.6.14.B Tube / Mounting Plate Specifications
Any number of tubes may attach to a plate so long as they are touching each other at
the plate. There may be a small gap between tubes to allow welding 360 degrees around each tube. If there is no gap between the tubes, they must be welded around the base as much as possible to form a single figure-eight weld, AND the tubes must be welded to each other two (2) inches up from the base plate.