CAGE TUBING SIZE

Old 08-18-2009, 05:04 AM
  #1  
hotrodharley
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Default CAGE TUBING SIZE

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.
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Old 08-18-2009, 05:48 AM
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sp2816
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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
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Old 08-18-2009, 07:25 AM
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hotrodharley
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Originally Posted by 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
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.
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