http://www.composites.com.au/there are some wing mast section properties in their products section...the AC145W is the A-class one (60 x 145 mm, 167 x 37.5 cm^4 (although they have an equivalent aluminium second moment of area value too?)). Weight of 1.29kg/m.
Although not of the same scale, during my model multihull building phase a few years ago, I built some very simple carbon wing masts of up to 1.8m (about an inch of chord length). They were great! Extremely stiff and easy to build, not to mention more durable than the equivalent aluminium ones. They were a similar weight.
It's good to see ppl willing to try building their own carbon masts. I may be convinced to give it a go sometime (just sketching up some ideas now).
