Originally Posted by toddedger
He goes on to say that with a 2:1 halyard you can get sufficient tension on the luff of a storm sail.
I will comment that if anyone wants to try this . . . They should make sure the halyard block/sheave is up to the loads. Typical halyard loads are rather lower than stay loads. We crushed a couple sets of harken
bearings when we first started playing with high modulus luffs on 2:1 halyards. I believe it is not the tension you crank on with the winch
(which you can easily calculate and measure) that imposes the biggest loads, but the mast
whipping/pumping in waves that does it. There are also some sail dynamics (sail popping full in a jybe) that impose loads.
As an aside, this suggests not using a masthead halyard but rather a lower halyard, for a storm jib
2:1, as the whipping/pumping will be much lower.
In any case . . . It certainly can and has been successfully done. But it is NOT as simple and straightforward as many sailmakers want to assume. I did a delivery
recently with a brand new (untested except in a 10kt 'trial') storm jib
set like this (quite expensive for the owner with all the top if the line furling
hardware). And it was a disaster. Despite a lot if tinkering and adjustment (on the bow in unpleasant conditions) we could not get it to set smoothly. But later, at the end of the passage
, with access to fedex and the owners credit card, I got it going nicely.