Aaron Get your mast straight side to side with little to no tension on the backstay. You can use your main halyard to do that. Then start adjusting the upper shrouds, 2 full turns on the turn buckle each side after which measure the tension with your Loos gage...I assume you have the right gage for your wire size and that you understand how to use the gage and convert its reading to tension on the wires. I measure at head level while standing on the deck next to the shroud. I suggest you try about 1000 psi on you upper shrouds and about 600 on your lowers. As you approach the desired tension adjust in increments of one full turn and then may just 1/2 turn. Take her for a sail and see how things work, apply backstay tension during the sail as you would normally do...I think about 1200 on the backstay in 12-15 apparent to weather, (a few white caps on the waves) would be a good starting point...you can measure that as you sail with the same gage...when you return to mooring check tensions again to see if things have changed...adjust tension if you like but I would expect 1000-1100 to work pretty well for your uppers and 600-700 on the lowers...if you're happy seize the turnbuckles and go sailing...check tensions regularly just for piece of mind or to adjust as required.
Usually there is no elaboarte attachment of the spreaders at the mast, just a socket and bolt probably on your 30 MKI On Mon, Aug 6, 2012 at 4:57 PM, Chuck S <cscheaf...@comcast.net> wrote: > You are right Aaron. The shrouds are way too loose. > > There is a wonderful explanation of tuning a rig on the Selden website. > (It doesn't require a Loos gage.) Only a 6 ft folding metric rule, which I > found at HomeDepot. I use their method and like the results. Be sure to > read it, and lube all of your turnbuckles before starting to adjust > things. After lubing, you loosen everything to hand tight, center the mast > top, tension the uppers evenly using the rule method, tension the lowers to > keep the mast straight. Final adjustment requires going sailing. It's a > good read, with much good advice. The rig setup starts on page 16. > > http://www.riggingandsails.com/pdf/selden-tuning.pdf > > Chuck > Resolute > 1990 C&C 34R > Atlantic City, NJ > ------------------------------ > *From: *"Aaron Rouhi" <aro...@districtconsulting.com> > *To: *cnc-list@cnc-list.com > *Sent: *Monday, August 6, 2012 12:43:56 PM > *Subject: *Stus-List C&C 30 MK1 Shrouds and Speaders > > > Hello Gurus, > > I own a 1979 C&C 30 MK1 and I noticed my shroud are pretty loose. I have a > taken a video of them on a recent sail which can be viewed below. It’s a > breezy day on the bay. 15+ and gusts up to 25+. I was sailing with only a > reefed jib and main down. There were 3 to 4 foot waves. As you can see the > leeward shrouds are loose and the spreader is banging back and forth: > > Video: http://youtu.be/5KcH1ar8_m8 > > > > 1) Should the spreaders go back and forth like that? I’m planning to > go up the mast and inspect them. Do you know how they are attached to the > mast? Manual doesn’t say anything and I can’t find any additional info. > > 2) I have a loos gauge, What should be the typical tension on the > shrouds? Some suggestion not paying attention to loos gauge and tightening > them while tacking until there is a bit of slack on leeward side. What > method do you recommend? FYI, They feel pretty tight at the dock and I have > placed the wedges equally all around. > > > > Sorry if these questions are previously asked. I have a difficult time > searching the forum… > > > > I really appreciate any help you can provide, > > Thanks, > > Aaron – Annapolis > > _______________________________________________ > This List is provided by the C&C Photo Album > http://www.cncphotoalbum.com > CnC-List@cnc-list.com > > _______________________________________________ > This List is provided by the C&C Photo Album > http://www.cncphotoalbum.com > CnC-List@cnc-list.com > >
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