Shroud tension

[jamestown]

Does anyone know what the shroud tension should be on a SO 39i? Our boat is two seasons old and we seem to have more slack on the leeward shrouds when sailing and the forestay seems to sag more, so I am assuming the shrounds and stays have stretched a bit. What is the proper way to achieve the correct amount of tension? I have an old shroud tension guage from when I used to race other boats, but I don't know the correct specs for this boat.

Thanks.

[MartyB]

Not sure that there will be a proper spec, unless the manufacture that builds and races typically will spec it.

I usually use about 20% of break strength per the Loos guage I use for my older Arcadia. Seems to work pretty well. If the winds are going to be up into the upper 20's and higher, I will sometimes tighten to 22-24%.

The thing I would like to figure out is the actual mast bend for different conditions.

Marty

[Trevor]

I am not very knowledgeable about these things but I find these booklets from Selden are a really good starting point.

I think they may be worth a look.

www.seldenmast.com/_download.cfm?id=5564&download=8767963&filename=595-540-E.pdf&bcsi_scan_5DAF63EA058F86FE=iksLOGhoeuapMgMqogjZgAUAAADmHjME:1

www.seldenmast.com/_download.cfm?id=5564&download=1475236&filename=595-808-E.pdf&bcsi_scan_5DAF63EA058F86FE=ukdqsDqvYSGlr7tHon7Z7AUAAAATDzME:1

Regards,

Trevor