Ok, so we've been talking/mulling over the cage design for what seems like months and since the car is going to McMahan on Thursday, time to put the plan to paper.
- International style door bars with gusset
- Full X in main hoop
- Top of a-pillar to front hoop base plate
- Harness bar to front hoop bar
- Rear Subframe pickup
- Rear shock tower for rear pickup (rear coilovers)
- Rear subframe/diff pickup
- Roof diamond
- Windshield "diamond"
- Trans tunnel support
I'm still deciding on the tubing specs--1.5x0.095 vs 1.75 x 0.095 for the required tubes. The supplemental tubes will be of 0.063 thickness. Given that my expected weight will be under 2200lbs dry I can run 1.5 x 0.095" and be legal in CCA, but it might be close. The limit for that spec tubing is 2500lb and 2699lb in NASA (recently changed) and SCCA respectively, so I'm fine there. I'm going to submit a rule change to match NASA since CCA cage rules are lifted straight from NASA. I just don't want to build the cage with the 1.5 and either come in overweight or be limited in putting in a heavier engine later--the S30B32 is 83lbs heavier and the S54B32 is 44lbs heavier...
Pics are below, but it's sometimes hard to make out the lines when you have a 3D model in a 2D picture. The model was done quickly in SketchUp! and are not to scale, perfectly aligned, etc. I wanted to get the basic layout done so I could better visualize it and communicate that to the cage builder. In the Pics, required tubes are red, "lwt" tubes are black. Let the discussion commence, contructive comments welcome ;-)