On Sep 20, 2004, at 1:57 PM, Peter Chopelas wrote: > Nick wrote: >> A better test would be to put the boat across 2 saw horses >> and have someone hop up and down in the cockpit. At least then you >> testing with loads similar to those experienced in real use. > > I agree that dropping a kayak is not a valid test, but neither is > bending it > across two saw horses. The loading on a hull is more complex and if > and > when failure occurs it happens for different reasons at different > points on > the hull. I have had my boat in the equivalent position in the real world with rocks substituting for the saw horses. A paddler supported by the kayak bridging saw horses may be a worst case, but it is a case that really can and does happen. If you play in rock gardens it can't even be considered unusual. > Ramming rocks is not what they were designed for, and not > what most people would consider "normal" use in a sea kayak. We were originally talking about surfing here which has the potential of creating a lot of loads which many people would not consider "normal" for a sea kayak. However, evaluating the failure possibilities in surf (or rock gardens) is a good way to determine worst case loads for "normal" use. Nick Schade Guillemot Kayaks 824 Thompson St Glastonbury, CT 06033 USA Ph/Fx: (860) 659-8847 http://www.guillemot-kayaks.com/ *************************************************************************** PaddleWise Paddling Mailing List - Any opinions or suggestions expressed here are solely those of the writer(s). You must assume the entire responsibility for reliance upon them. All postings copyright the author. Submissions: PaddleWise_at_PaddleWise.net Subscriptions: PaddleWise-request_at_PaddleWise.net Website: http://www.paddlewise.net/ ***************************************************************************Received on Mon Sep 20 2004 - 14:37:10 PDT
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