Quote:
Originally Posted by jfranta
Use the creep tables on our website for setting the line size for creep. We have not seen any creep issues when referencing the creep tables to set the line size for no more than about 0.5 inches per year based on expected pretension.
John Franta, Colligo Marine.
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Hi John,
Just a note to say that, as you and I have discussed some, tuning for Spectra should be much, much lower than with wire. The reason is that tuning is largely a matter of dealing with anticipated dynamic stretch; you need, for instance, to pretune uppers at up to 20% of break, with wire. But Spectra, properly sized, is far stronger, relative to the load, so can have much less pretension. That makes it vulnerable to creep only when under way, which is a small percentage of its life, even in heavily sailed boats. Once we stopped tuning like wire, creep dropped off immensely.
Fair leads,
Brion