Is a carbon roll cage impossible?

[maclf01]

anonymous said:

[redacted]

Most metals have an appreciable level of ductility, most composites depending on the resin are not even close to being ductile, but offer something else in return, such as.(du dun du daa!!!) stiffness.

Here is a little bit of tech, for some of you boy racers who still seem to think carbon is the end all be all of materials: http://www.webancor.com/tech.htm

Secondly, if you have more questions google the properties of steel and google the effing properties of composite matrices, and hopefully you are smart enough to figure it out through READING.

p.s. you're welcome

[sevenzero]

interesting topic ..

how about that "carbotanium" (SP) stuff that Pagani have recently introduced?

im dont know much about metals/composites/materials etc just throwing it out there

sevenzero

[busta]

k-ink said:

Rotary Madness said:

I seem to remember reading somewhere that titanium is quite brittle when compared to steel

I don't know much about it, other than it's use in cycle frames. On my limited quick research it showed up two different methods. The cheap frames has rolled titanium, ie the tubes were formed by rolling flat sheets around, then welding them. The far superior method was drawn titanium - with no seams and hence much stronger. This is why some titanium bike frames are half the price of the proper kit.

But as you say I wouldn't be suprised if plain jane steel was simply tougher overall, regardless of weight issues.

Edited by k-ink on Saturday 18th December 14:09

The same is true of steel tubes and FIA rules specify drawn (seamless) steel tubes for exactly the same reasons top end frame builders use them. A tube with no seam will have consistent strength in every axis. A seam may be stronger or weaker than the rest of the tube, which will make it inconsistent and therefore less predictable under stress, and most probably significantly weaker.

[madala]

....you crash....you roll...all those lovely sharp bits of CF flying around the remains of you and your car.....Hmmmmm....not good...."I think I better think that out again."

[minispeed99]

Hello everyone I just came across oakley design roll cage it is supposed to be an all carbon fiber roll cage. Now I don't know how much I would trust it due to several reasons cover here https://www.pistonheads.com/gassing/topic.asp?h=0&... but then I wonder if anyone has tried to do a hybrid roll cage before, a cage that incorporates steel tubes and maybe uses carbon fiber tubes for the diagonal member behind the driver seat