Solid Rollbar Question

[Andrew Prevelig <aprev@tdo.infi.net>]

I'm thinking of fabricating a roolbar from solid steel rather
than from the usual steel tubing, since this would be a lot
easier to bend without the danger of crimping or kinking
the tube.  I've asked S.C.C.A. what diameter of solid would
have equivalent strength to a 1 1/2" tube, to be legal for
autocross, but they didn't know... said no one had asked 
that before.  Hopefully someone can direct me to the answer.
Thanks!
Andy Prevelig
aprev@tdo.infi.net