Stus-List Re: [EXTERNAL] Main halyard shackle
Last spring I replaced my rope/wire genny halyards with all rope. I have a roller-furler. In discussing shackle options to reduce the chance of catching during furling, my rigger questioned why I was bothering with a shackle at all. My Harken furling unit came with a twisted D or something on the part that is hoisted. The rigger spliced an eye in the new rope halyard to connect to the furler shackle, and it worked fine all season. Unlike almost everything else spinning around up there, the spliced eye on the replacement halyard was not beat up or worn at all. The shackle on my main halyard is, I believe, specifically made for head boards. I like the blue Wichard one, which I believe they call a “thimble” shackle. From: Della Barba, Joe via CnC-List Sent: Tuesday, November 09, 2021 8:17 AM To: Stus-List Cc: Della Barba, Joe Subject: Stus-List Re: [EXTERNAL] Main halyard shackle I don’t use a snap shackle any more for the jib, since it stays up for months at a time or more. It is a screw-in shackle with safety wire holding it. The main shackle is one that screws in and out. It has never loosened itself. I think the longest the main has been up continuously is maybe 6 or 7 days and it did fine. Joe Coquina From: David Knecht via CnC-List mailto:cnc-list@cnc-list.com> > Sent: Tuesday, November 9, 2021 7:52 AM To: CnC CnC discussion list mailto:CnC-List@cnc-list.com> > Cc: David Knecht mailto:davidakne...@gmail.com> > Subject: [EXTERNAL] Stus-List Main halyard shackle My boat came with a main halyard shackle of a type I have never seen anywhere else. It has a pivoting arm that swings up after inserting through the headboard and secured with a threaded pin. It has worked fine for years and easy to remove and attach, which I do routinely when done sailing for the day. Recently, I twice found it nearly completely unscrewed after a day of rough weather sailing, and that is concerning. I don’t want to lose the halyard up the mast. I am considering replacing it this winter with a standard snap shackle of the sort used on my genoa halyard. I looked at a rigging company web site and they used snap shackles for genoa halyards and pin shackles for main halyards. The logic of that escapes me. On my boat, I take down the roller furling genoa only a few times a season while the main halyard is detached every time I go sailing. I have no idea what the forces are on the main halyard but I would not think much greater than the genoa. Any words of wisdom, or reason not to use a snap shackle for the main? Thanks- Dave David Knecht S/V Aries 1990 C 34+ New London, CT Thanks to all of the subscribers that contributed to the list to help with the costs involved. If you want to show your support to the list - use PayPal to send contribution -- https://www.paypal.me/stumurray Thanks - Stu
Stus-List Re: [EXTERNAL] Main halyard shackle
Two reasons for a headboard shackle on the main rather than a snap swivel: Headboard shackles are designed to accommodate a longer length from the sail cringle to the edge of the sail which generally is a fixed U shaped forging. This is much stronger than a pivoting closure that is found on a swiveling snap shackle of equal length. A snap swivel shackle is specifically built to allow the sail to twist and rotate under load, especially when used with a spinnaker. Hoisting loads on a mainsail are far more linear and rotation is less important. Also, headboard shackles are less expensive. Chuck Gilchrest Half Magic LF 35 Sent from my iPhone > On Nov 9, 2021, at 8:17 AM, Della Barba, Joe via CnC-List > wrote: > > > I don’t use a snap shackle any more for the jib, since it stays up for months > at a time or more. It is a screw-in shackle with safety wire holding it. > The main shackle is one that screws in and out. It has never loosened itself. > I think the longest the main has been up continuously is maybe 6 or 7 days > and it did fine. > Joe > Coquina > > From: David Knecht via CnC-List > Sent: Tuesday, November 9, 2021 7:52 AM > To: CnC CnC discussion list > Cc: David Knecht > Subject: [EXTERNAL] Stus-List Main halyard shackle > > My boat came with a main halyard shackle of a type I have never seen anywhere > else. It has a pivoting arm that swings up after inserting through the > headboard and secured with a threaded pin. It has worked fine for years and > easy to remove and attach, which I do routinely when done sailing for the > day. Recently, I twice found it nearly completely unscrewed after a day of > rough weather sailing, and that is concerning. I don’t want to lose the > halyard up the mast. I am considering replacing it this winter with a > standard snap shackle of the sort used on my genoa halyard. I looked at a > rigging company web site and they used snap shackles for genoa halyards and > pin shackles for main halyards. The logic of that escapes me. On my boat, > I take down the roller furling genoa only a few times a season while the main > halyard is detached every time I go sailing. I have no idea what the forces > are on the main halyard but I would not think much greater than the genoa. > Any words of wisdom, or reason not to use a snap shackle for the main? > Thanks- Dave > > David Knecht > S/V Aries > 1990 C 34+ > New London, CT > > > > > > Thanks to all of the subscribers that contributed to the list to help with > the costs involved. If you want to show your support to the list - use > PayPal to send contribution -- https://www.paypal.me/stumurray Thanks - Stu Thanks to all of the subscribers that contributed to the list to help with the costs involved. If you want to show your support to the list - use PayPal to send contribution -- https://www.paypal.me/stumurray Thanks - Stu
Stus-List Re: [EXTERNAL] Main halyard shackle
I don’t use a snap shackle any more for the jib, since it stays up for months at a time or more. It is a screw-in shackle with safety wire holding it. The main shackle is one that screws in and out. It has never loosened itself. I think the longest the main has been up continuously is maybe 6 or 7 days and it did fine. Joe Coquina From: David Knecht via CnC-List Sent: Tuesday, November 9, 2021 7:52 AM To: CnC CnC discussion list Cc: David Knecht Subject: [EXTERNAL] Stus-List Main halyard shackle My boat came with a main halyard shackle of a type I have never seen anywhere else. It has a pivoting arm that swings up after inserting through the headboard and secured with a threaded pin. It has worked fine for years and easy to remove and attach, which I do routinely when done sailing for the day. Recently, I twice found it nearly completely unscrewed after a day of rough weather sailing, and that is concerning. I don’t want to lose the halyard up the mast. I am considering replacing it this winter with a standard snap shackle of the sort used on my genoa halyard. I looked at a rigging company web site and they used snap shackles for genoa halyards and pin shackles for main halyards. The logic of that escapes me. On my boat, I take down the roller furling genoa only a few times a season while the main halyard is detached every time I go sailing. I have no idea what the forces are on the main halyard but I would not think much greater than the genoa. Any words of wisdom, or reason not to use a snap shackle for the main? Thanks- Dave David Knecht S/V Aries 1990 C 34+ New London, CT [cid:image001.png@01D7D542.177C9F40] Thanks to all of the subscribers that contributed to the list to help with the costs involved. If you want to show your support to the list - use PayPal to send contribution -- https://www.paypal.me/stumurray Thanks - Stu
