In fact carbon fiber is even stronger than some metals such as aluminum.
Judging by the number of carbon lids you see on a DZ with bits of gaffa tape and glue holding all the cracks together, I'd say the brittleness of carbon is a significant disadvantage.
This is usually due to the matrix around the carbon fiber oxidizing quickly in the hot and sunny conditions most people skydive in. A new carbon fiber helmet will be awesome. But as it gets brittle and old over the years, you will definitely lose some protection.
As far as this whole thread, still not sure if serious -_- 100mpgs?
(This post was edited by zerospinskier on Jul 30, 2012, 6:14 PM)