Carbon Fiber Roll Hoops

[flyboy2160]

Does anybody here have a source for information about these? I've seen Oakley's website, but that was all I could find.

I realize trying to get any engineering information about them is a long shot, but I'll try anyway.

Thanks in advance,
Flyboy Steve

[Lycoming]

What exactly are you looking for? like what kind of information?

Although, I was under the impression that most LMP and F1 cars don't actually use a carbon roll hoop. The top part at least is an alloy, and it attaches to the monocoque just underneath.

for example, here: http://scarbsf1.com/blog1/wp-content/up ... /STR23.jpg

I'm also under the impression that they generally should not be used without undergoing dynamic testing of some sort.

[flyboy2160]

Thanks Lycoming.

I was aware of the metal ones. But I'm almost certain that at some point in the past, F1 used carbon fiber roll structures.

I'm toying with replacing the steel tube roll hoops on my plane with carbon fiber ones, so those current F1 alloy/sintered Ti ones won't work.

It can be done. Oakley: https://www.gmpperformance.com/index.cf ... PID=202946

And yes, it will be tested before I fly it!!!

[Lycoming]

Hmm... do you mean a roll hoop, or a roll cage? If it's for a plane, I presume that what you're looking for is a composite tube space frame, and not a protrusion that the car sits on when somebody's done goofed.

If that is indeed what you are looking for... I may be able to help.

If not, you're on your own. The only thing I can direct you towards is a fibreglass roll hoop that my school's solar car team did, but even I was not terribly impressed with they work they did (only static testing, etc), so I suspect you may not find it too useful.