I intended to install a
Harken Cruising
Jib Reefing and
Furling Unit 1 on a heavy displacement 33' boat. The spec. says it covers typical boat lengths of 28' - 36', max. forestay dia. of 5/16", and clevis pin 1/2" or 5/8".
I measured the forestay as 3/8" and the clevis pin as 1/2". These don't seem to match up - the forestay is stronger than the clevis pin!
I suspect that a previous owner put a larger diameter forestay on the boat.
How do I decide whether I can reduce the forestay down from 3/8" to 5/16"?
(West Marine give the breaking strengths as 14,800 and 10,600 lbs. A significant difference!)
Thanks.