It must depend on what layup Wenonah
Posted by: g2d on Feb-02-13 12:33 AM (EST)
uses. I will state categorically that if they keep the same reinforcement inside the hull, using Kevlar, and only replace some outside Kevlar with layers of carbon of equivalent weight, you will get a stiffer canoe that is harder to break and easier to repair. That has always been the experience of whitewater boat builders.
Now, certain kinds of blows to the outside of a CC/KK hull may cause local compression cracks, just as they do on my SS/KK whitewater boats. But such cracks are easily and quickly repaired. I hate to repair local damage to the outside of an all Kevlar hull. The Kevlar often scrunches and delaminates rather than breaking, so it has to be laboriously cut out. Sanding is more difficult. Then one has to decide what repair cloth to use.
Kevlar is an outstanding cloth for the inside of hulls, but always a disappointment for the outside layers. Back in the 80s, the Boatbuilders Manual presented clear data showing that an SS/KK layup was the best at withstanding damage. KKKK was far behind. I've never seen test data that contradicted that result.