Originally Posted by stormalong
My inner forestay is a 1/2 inch pin. I don't remember the wire diameter. All I can say is that there is a lot of force on the lever to properly set the inner forestay tension. The forestay is 3/8 inch.
I've worked through my 1998-2000 copies of Cruising World (not a complete run - I discovered I've two copies of a couple of issues while other months, particularly from 1998 and 1999 are missing. I've not read through my 2002 issues yet. Keep getting distracted finding interesting stories.
I figure that my (inner) forestay is 9/32" and carries 870 pounds tension (which I think is only 10% of SWL). I need to put my Loos tension gauge on the wire again to check the current
If I'm right that the forestay is only carrying tension equal to 10% of SWL, I might consider increasing tension a little (to 12% of SWL) to see if that improves performance (and reduces luff/stay sag) from the staysail.
I've not calculated the leverage in the over centre lever configuration. But I think the big advantages of an over centre lever include that the force needed to move between the two stable settings (open and closed) is relatively constant instead of being a single
I usually remove and replace my forestay when at anchor
or at dock
(i.e. not while sailing). I don't recall
any particular stress doing so other than being startled the very first time at the noise
from the mast
and the rest of the rig when the bit of prebend induced by the forestay tension was released.