Dusty Bradford
Well-Known Member
- Joined
- May 24, 2001
Have you notched the frame? I have seen this happen in lots of cars with notched frames. If you don't have a fuel cell then there is no weight on your frame behind the axle. Really all the frame does is hold up your rear bumper. The first problem is your cage is not tied to the frame and when you leave the springs and shocks are pushing upwards on the frame. If your frame is not strong enough then it is also flexing upwards causing the rear section of the body to crease as if you were jacking the car up using the rear bumper. A cage must be tied to the frame for real benifits, it's not just about protecting your head but also about strength and tieing things together. The best location to tie the bar in is not to the rear most section of frame (this will help some) but instead tie it into your suspension mounting points. When the cage is tied to the frame and then the rear suspension mount points, there should be no flex.