To all.. thankyou for your input, i have just re-read all the responses from start to finish and would like to summarise my views on Derek's Build Method KSS.
KSS is the build method which has developed from the beginnings of foam/GRP to what it is today. I dont see any other method which has sustained the same amount of refinement for a large number of years. We need to embrace this refinement and progress. I see the influence of this progression saving a considerable amount of time (especially longboarding time) from any other start from scratch method. Compared to a kit method i can see considerable cost savings (and with the table not too much time.) Regarding the infusion on the table, i dont see the necessity to use the best infusion methods as the table is a flat surface which can only be a lot easier to infuse on then a complicated mould shape.
The fact that the man behind the multihull
dynamics website has chosen the KSS build method further reinforces to me that it is the best option for building a one off multihull
As mentioned previously i am an engineer
, and have thought through and believe the inbuilt stresses on the outside skin are negligible. If the foam has dart cuts to allow the core
material to take up the space where the cuts are, the amount of elongation of the outside skin is small, which only leaves a small amount of bending stress, which on a skin of a couple of mm, with a span of 12m wouldn't be much.
So in summary from my thourough analysis of Derek's KSS build technology, i say to any budding boatbuilder
GO FOR IT. When i find a shed and a bit more spare cash i will be. Who am i to doubt a catamaran
designing/building/sailing legend of such calibre as Derek Kelsall.
Once again, thank you all for your input,
Have fun, and follow your dreams....