CAGE TUBING SIZE

[hotrodharley]

TRYING TO GET CAR TO CERTIFIED TO 7;50;;USING MILD STEEL TUBBING.NEED TO KNOW WHAT SIZE OF TUBING I NEED FOR THE "X" BARS BETWEEN THE 2 FRAME RAILS BEHIND TRANS MOUNT AND THE DIGNAL BAR FROM THE RAIL RAIL TO THE ROCKER BAR[ROCKER PANEL]THIS IS A REC[2X3"]FRAME RAILS..PICS BELOW IS OF BARS I'M ASKING ABOUT.
http://i8.photobucket.com/albums/a43/hotrodharley/Thunderbird20047.jpg

[sp2816]

The "X" bars that you refer to are #4 in the SFI spec and the diagonal bars are #8A and #8b and all have a minimum spec of 1" x 0.108" in mild steel or 1" x 0.049" in chrome moly.

The driver seat support bar is #9 and it is the one that is going perpendicular between the inner frame rail and the outer lower door bar and it's spec is for 1 1/4" x 0.108" mild steel or 2" x 2" x 0.065" square tubing in mild steel ( 1 1/4" x 0.058" in chrome moly or 2" x 2" x 0.065" square tubing).

Bill Mitchell

[hotrodharley]

The "X" bars that you refer to are #4 in the SFI spec and the diagonal bars are #8A and #8b and all have a minimum spec of 1" x 0.108" in mild steel or 1" x 0.049" in chrome moly.

The driver seat support bar is #9 and it is the one that is going perpendicular between the inner frame rail and the outer lower door bar and it's spec is for 1 1/4" x 0.108" mild steel or 2" x 2" x 0.065" square tubing in mild steel ( 1 1/4" x 0.058" in chrome moly or 2" x 2" x 0.065" square tubing).

Bill Mitchell

thanks bill;;just what i needed to know so i can now get tubing on it's way to me.all i liked i hope to try and get it passed.wish me luck.