Should have said for same weight/same carbon content/same construction/same laminate direction etc etc SDM will be stiffer and stronger (OK not tougher) than equivalent RDM. !!!!
Cant change physics. Strength (and stiffness?) is/are proportional to depth. (ie in this case diameter )
IAnybody who has converted over to RDM as an experiment try your sail on an SDM ???? See how it feels.??
Last edited by Floyd; 16th June 2011 at 10:25 AM.