Quote:
Originally Posted by zdr93523
Your diagonal bar / harness bar is not legal for NASA.
See page 46 and 47 of the 2016.1 CCR
15.6.22 Shoulder Harness Bar
"The bar must intersect the required diagonal
bar"
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Quote:
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Originally Posted by NASA 15.6.22
The bar must intersect the required diagonal
bar, but need not remain in the same plane as the main hoop (e.g. May bend aft-ward to allow more seat room
behind the driver and /or passenger seat(s); as long as it intersects the required diagonal).
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Thanks for pointing that out. We've built cages like this before with no issues, and some of us have issued NASA logbooks for similar styles before. The rule book is somewhat vague exactly what constitutes "intersecting" since a two-piece harness bar that arches behind both seats would be legal. One could argue this style is actually stronger in side load against a "pinching" force in plane with the roll hoop, which is what the rule is meant to preserve.
But since that's all interpretation, we've reached out to a regional NASA official to give a final go/no-go call on this element of the design. We'll update with what we hear.