another roll bar question

[moparsled]

getting ready to start on my cockpit-

Our rules state "Roll bar... higher than driver's head"

Fridaynitedrags suggested "minimum height 3 inches above driver's head"

so my question- 3 inches above driver's head measured from the bottom or top of the bar?

[FiddyFour]

top of the bar dude... dont forget to measure from the top of the HELMET to the top of the bar

[butch nassau]

Correctomundo!

It has to mean from the bottom of the bar.

If, for instance the top of the bar was one inch above his head and the bar was an inch an a half thick, the bar would be one half inch in his head.

[fasttimes]

It is measured from Top Of helmet to Top Of Bar (Main Hoop). Also if you are building a Roll Bar You need to use 1 3/4" O.D. tubing Mild Steel, DOM, or 4130 Chromoly. Roll Cage is 1 5/8" tubing.