Quote:
Originally posted by Knestis@Sep 22 2005, 11:13 AM
A cage builder on the East coast has made it common practice to leave the traditional parallel rear supports (from the main hoop) out of his designs, instead using ONLY an X. I've long argued that this approach does NOT meet either the letter or engineering aguments behind the requirement. Over some portion of that span downward to the rear end of the car, there is functionally only one tube there. The minimum cross-sectional area of the rear portion of the cage structure is just slightly over pi times one-half of the tubing diameter squared - or approximately "not very damned much."
To my mind, the same applies here.
I've wondered about this for a while too. I'm interested in thoughts about the rear X....