I'm not sure where you get info about
Posted by: g2d on Dec-20-12 5:35 PM (EST)
the number of cloth layers in composite boats. I've owned a number of composite boats built by Phoenix, Dagger, Millbrook, Moore, Mad River, and Bluewater, and the minimum number of layers has been four. My latest Millbrook does appear to have only three layers in the upper sides, but the chines and bottom have two outer layers of S-glass, a layer of denser-than-usual Spheretex, and one to two layers of Kevlar. My Dagger, a 21 pound slalom c-1, has two S-glass outer layers, and two carbon inner layers.
I find it very hard to get specifics from some canoe makers about layup. You must have some special source of intelligence. When I have done repairs, I have not encountered three layer layup in those areas that actually break. Woops, one exception. Slalom kayaks may have a foam core deck where the only cloth layers are inner and outer Kevlar.