It is beginning to look as though this airframe will outlast several sails . Because of its higher strength to weight ratio , a carbon fiber frame can be made the same weight as an aluminum frame but much stronger, or the same strength but much lighter. Although a carbon fiber frame is somewhat more expensive at present, the composites industry is much younger than the metals industry so composite prices will likely be less in the future. On the other hand, the price of aluminum continues to climb. Moreover, the manufacture of aluminum tubing involves a series of environmentally costly processes.
Composites are easier on one's conscience, and in the long run, on one's pocketbook.