Originally Posted by
SlimRider
Ah...That's not my point.
My point is the following in the form of a question:
Given say the top tube of a CF frame;
When its struck in a small area (let's say a pebble kicked back by an eighteen wheeler truck);
How is the top tube compromised and why?
I'd just like to have that question answered by a materials expert.
- Slim

Something light like a pebble would have to be travelling very very fast to damage a CF frame. They're seriously not that fragile. If the bike fell over on its side onto a rock or bricks or something like that, it might or might not break, however a similar impact would destroy an aluminum frame. If anything CF is more durable than aluminum if the layup and resin are done right.
BTW I am not an expert but I have recently taken several courses about materials and am studying mechanical engineering.