Chris Boardman reviewed a Gios carbon/aluminum frame equipped with Zipp 303 tubulars. Basically he said that all manufacturers of carbon rims should ride their creations down the steep side of a mountain and maybe they would rethink what they are doing. For a ride that incorporates alot of descending, he said that the 303s HAD TO GO!!!! The problem was the uneven braking surfaces naturally inherent on carbon rims.
I think this is an example of light weight just for the sake of, with little regard to practical use.
Don't get me wrong-I think that carbon is a great material for many applications related to cycling, but if any of you read his article you will notice that his concerns are valid and pragmatic. He not only questions the Zipp tubulars, he also wonders if Gios is just another company with a carbon frame on the market that really never put any thought into why people want carbon and what is the best way to incorporate it into bicycle design. He also wondered if carbon is suitable for stems, as they need to flex a little because of the torque and strain it has to deal with and carbon does not bend-it breaks. any thoughts?