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F.6.3.1 Front Hoop Braces must be constructed of material meeting F.3.2.1.d
F.6.3.2 The Front Hoop must be supported by two Braces extending in the forward direction, one on
each of the left and right sides of the Front Hoop.
F.6.3.3 The Front Hoop Braces must be constructed to protect the driver’s legs and should extend to the structure in front of the driver’s feet.
F.6.3.4 The Front Hoop Braces must be attached as near as possible to the top of the Front Hoop but not more than 50 mm below the top-most surface of the Front Hoop. See figure following F.5.9.6 above
F.6.3.5 If the Front Hoop above the Upper Side Impact Structure leans rearwards by more than 10° from the vertical, it must be supported by additional rearward Front Hoop Braces to a fully Triangulated structural node.
F.6.3.6 The Front Hoop Braces must be straight, without any bends
Explanation
F.6.3.1 Front Hoop Braces must be constructed of material meeting F.3.2.1.d
F.6.3.2 The Front Hoop must be supported by two Braces extending in the forward direction, one on
each of the left and right sides of the Front Hoop.
The Front Hoop has to have two Front Hoop Braces extending forward of the Front Hoop, and there has to be a brace on either side of the Front Hoop.
In the image on the right, our Front Hoop Braces (FHB) are highlighted in pink.
F.6.3.3 The Front Hoop Braces must be constructed to protect the driver’s legs and should extend to the structure in front of the driver’s feet.
The Front Hoop Braces should be designed to protect the driver's entire legs in case of an impact. To do this, they must extend to the structure directly in front of the drivers feet. In our case, this structure is the Front Bulkhead
F.6.3.4 The Front Hoop Braces must be attached as near as possible to the top of the Front Hoop but not more than 50 mm below the top-most surface of the Front Hoop. See figure following F.5.9.6 above
For context, the pink dimension is the dimension I am referring to.
SES Image:
This is the image in our SES that shows how our Front Hoop Brace is connected to the front hoop 32 mm below the top of the Front Hoop, which is within the 50 mm threshold.
F.6.3.5 If the Front Hoop above the Upper Side Impact Structure leans rearwards by more than 10° from the vertical, it must be supported by additional rearward Front Hoop Braces to a fully Triangulated structural node.
If the portion of the Front Hoop that is above the Upper Side Impact Structure is bent rearwards more than 10 degrees from vertical, there have to be Front Hoop Braces that extend rearward of the Front Hoop, and they must connect to the chassis at a triangulated structural node (one of the nodes where the ends of tubes converge for all connections)
In this image in side view, the Front Hoop is represented in red and it is vertical. This means only the frontward extending Front Hoop Braces are required (pink).
In this image in side view, the portion of the Front Hoop above the Upper Side Impact Structure is angled back at an angle θ. If θ is greater than 10 degrees, additional rearwared extending Front Hoop Braces (green) are required.
F.6.3.6 The Front Hoop Braces must be straight, without any bends
The Front Hoop Braces have to be made of straight tube that has not been bent, only cut to length.
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