Just looking for a little clarification here...
Reading along in the roll cage section and I found this part confusing...('13 rulebook)
"Tube gussets shall be constructed such that the outside edge of the tube be at least 4" from the tube junction point."
Then, later it states..." Gussets may not be used as aerodynamic aids and shall not exceed 6" in length.."
Why does this rule exist? The 4" from junction point makes sense to me, but the 6" length limit makes it tough on obtuse angle junctions.
Pictured below is an example. The front upper windshield bar junctions to the A pillars is well over 90 degrees. Mathematically it's not possible to meet the 4" rule and meet the 6" rule. Does this mean the member to support the junction should be made out of full size tubing and just be considered a brace, not a gusset?
Cheers,
Chris