Thanks. I lack both experience and empirical data, (no gauge) so your input really helps. I suspect that I simply did not set it up correctly initially. Last week's sail was in 14-16kts, gusts to 19, rare-ish here, a fair bit of "bash and crash" and first time this season, so any microbends certainly got unbent, and the unseated was seated.
Dave ---------- Forwarded message ---------- From: robert <robertabb...@eastlink.ca> To: cnc-list@cnc-list.com Cc: Bcc: Date: Wed, 14 Jun 2017 09:55:31 -0300 Subject: Stus-List Rod Rigging Tension C&C 32 Dave: I can't add much to what Josh has stated. Each Spring, the mast is stepped, I set the rig tensioned the same as every year.....even if my boat sits at the dock, the shroud tension will ease a bit...maybe as much as 100 lbs. or 5% to 7% of the initial tension. One half turn on my turnbuckle is not a lot of 'actual distance' gained or losed.....as Josh says "a micro bend"..... however, if I leave the gauge on the shroud when the turnbuckle is tightened or loosened, it will move the gauge accordingly. Without the Loos RT 10, I am merely guessing the rig tension......under tensioning is obvious when you take the boat out under sail.....over tensioning is not as easy to detect. I come from a racing background where rig tension is paramount.....we were constantly adjusting it to suit the conditions on race day......sometimes up and down between races on the same day While I don't race AZURA, old habits like rig tensioning has remained with me. Rob Abbott AZURA C&C 32 - 84 Halifax, N.S. On 2017-06-13 5:45 PM, Josh Muckley via CnC-List wrote: "How do I gauge?" - this is the argument for paying $500 for the Loos Tension gauge, otherwise you are just guessing. I believe there are micro bends, stretches, seating, and flexing throughout the system which allow the rig to loosen up. With such low stretch rod rigging only a fraction of an inch can be the difference between hundreds of pounds of tension and zero pounds. Josh Muckley S/V Sea Hawk 1989 C&C 37+ Solomons, MD On Jun 13, 2017 12:40 PM, "Dave S via CnC-List" <cnc-list@cnc-list.com> wrote: > Timely... > I set up my rigging per the instructions in the owners manual immediately > after launch, and Windstar sat for a few weeks other than a couple of very > gentle sails. Finally got to give her a righteous thrashing last weekend > and I returned with slack upper shrouds - a bit alarming. Lowers and mids > not obviously changed, mast step not collapsing, chainplates not failing. > I suspect I had not adequately tightened the uppers. A neighbor explained > that his boat changes shape a bit once launched (or rather, sitting on the > cradle all winter distorts it a bit.) > > Without a gauge, how do I gauge that ensure that the shrouds are tight > enough? Deflection? > > What is it that re-seats and settles when the rig is first set up? > > Tx. > > Dave >
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