How to Measure Standing Rigging - Sailing Services Stretch the wire straight and ensure there are no bends in the wire. However, DynICE Dux is now back in the running, and with the possibility of 9mm for the Mizzen for about the same price as the 8mm Liros D-Pro-XTR. Standing rigging Definition & Meaning | Dictionary.com Many people believe that only heavily used rigging needs to be replaced, but the continuous flexing of loose wire that is not under load can take a serious toll as well. The IMS data shows a righting moment at 25 degrees of heel as 716 lbs/degree or 17,900 lbs. If it does not rotate, spray some WD40 but never twist the rod rigging. 10M OEM Rigging Wire Headstay Backstay Upper Shroud Lower Shroud Size 3/8" 3/8" 5/16" 9/32" So is the rigging over-sized on the 10M? Before tightening the forestay, however, I wanted to loosen the the V1s a little so as not to induce further compression in the mast. only hand tools are required for installation, can also be completely disassembled and reused (some models require inner cone replacement) providing great longevity, can be manufactured to very precise tolerances, the waste material can be recycled to create further parts. One seemingly easy option is to over-size. What is meant when we say they are structural? Asymmetric Spinnaker Sheet - Boat length x 2.5 to 3. I was satisfied with the shape and only the sea trials could have confirmed the correct setting of the D2. Seen from the side, the mast showed excessive rake and pre-bend that needed correcting. The flogging of a loose shroud can actually be harder on wire than steady pressure. We have a huge rope wall at Rigworks and are very proud of our selection and expertise. Whats up? We wont be re-rigging the main until after the 2021 season so have plenty of time to measure properly. Taking V1s and D1s and shaking them, hitting them, you get a feel for their. Runners and checkstays are not structural, therefore are not to be considered part of the standing rigging per se, the mast does not need them to stay up. For more information on rig inspections, visit our prior Ask the Rigger article at http://rigworks.com/the-scoop-on-rig-inspections/. Spinnaker Sheet / Guy - Boat length x 2. This was not the case before, with a perceptible difference of several degrees. For an idea of the costs involved to replace your standing rigging, here are some examples of sets of rigging we have made for customers in the past 12 months (prices as of Sept 2022). If your rigging terminal contains a pin remove the pin and use this as your attachment point. standing rigging. From the Rigger: Lets play Name that Stay Forestay (1 or HS) Read more, Question: Do you have guidelines for selecting halyards, sheets, etc. Is it maybe, just maybe possible that they have cornered the market on synthetic standing rigging through a, Location: Bas Caraquet, New Brunswick, Canada. Stainless Steel Wire Rigging and Wire Rope - Jimmy Green They show up on your doorstep ready to use. Member Album by TANSL | Boat Design Net https://www.boatdesign.net/gallery/albums/member-album-by-tansl.4186/, TANsl https://www.boatscantling-iso-12215.net/, (You must log in or sign up to reply here.). All standing rigging is manufactured right here in our rigging shop -- the way it's been since 1984. Pearson 10M Standing Rigging Calculation - dan.pfeiffer.net T-terminal is a generic term for all the different forms of shroud attachment favoured by mast manufacturers, both current and historic - T, T-Bar, Flathead, T-Ball, Stemball, also known as Elephants Foot, Stemball with Cup, Spoon and Shroud terminalare all variations on this theme. If your rigging includes a shackle with a captive pin, the inside edge of the pin is the bearing point. We progressively lengthen the checkstay lashing until we get to a setting where, when tightening runner and checkstay there is a similar tension on both. Contrary to popular thought, a slack rig is more punishing on a hull than a properly adjusted, tight rig. The Bluewave turnbuckle (bottom) is for racing enthusiasts who want to easily adjust settings on the water. The goal is to give the mast a beautiful shape that does not have strange kinks in its curvature and especially any inversions etc. The swept back spreaders ensure that the mast can stand up even without the backstay, which is no longer structural. This is because upwind mast is fully loaded at just 15-16 knots after which you need to reduce sail. Forged:Some Petersen Stainless terminals are manufactured using a process known as electrical upset forging.The electrical current used internally aligns the grain structure of the stainless steel.The result is a stronger, lighter fitting that is also more resistant to loading fatigue.The picture shows a machined eye (top) which is slightly larger than the relatively minimal forged eye (bottom) for the same size wire. The tension gauges are especially designed for accurate, repeatable tuning of a sailboat's standing rigging. I would suggest using larger than 1/4" dyneema. chunkier appearance than forged parts because the internal grain of the material remains parallel, requiring some faces to be longer to retain strength. I have a 1988 Catalina 22'. Check the thread size (standard or upsize) Select a turnbuckle which provides articulation e.g. there is no M11 size. As a quick side note people often ask if they should switch from rod to wire rigging or vice versa during the re-rig (usually from rod to wire as rod is much more expensive per foot). 1/4" is usually 7/16" or 1/2". N.B Selden T terminals are a similar size and shape to the Hasselfors Flat Head design. Be aware that this is not a simple conversion and can be quite expensive. We also set runners and checkstays just for safety. Therefore, except in exceptional cases, starting from this assumption is more than reasonable. Global Solo Challenge Copyright 2022. That is with the forestay and backstay attached to the masthead as fixed standing rigging that create traction in the opposite direction. This also serves as your pin center measuring point. For decades now, however, fractional rigs with swept back spreaders have been increasingly widespread. Why not schedule annual service as you would with a car? a toggle fork at the bottom end. only available on wire up to 6mm diameter, because larger diameters are not flexible enough to turn around the tight radius of a thimble without detrimental deformation, the most economical method for professional wire termination, Ideal for fittingonto oversized pins andattachment points with the additionofa stainless steel thimble, can also be used to form a loop for masthead attachment. Others, such as Mr. E.Sponberg, make other distribution of forces. That said, runners and checks play a very important role in stabilising the mast and reducing its stress. Our preferred rope supplier, Jimmy Green Marine, has lots of information and a range of Dyneema for standing rigging from different suppliers. Driscoll Boat Works and Shelter Island Boat Yard are both within walking distance of Rigworks. After this introduction, lets move on to a practical case. This means that when the main halyard is released, the boom falls onto the coach-roof. Jimmy Green have 100m drums of 8mm in all 3 types of Dyneema from Marlow: Marlow Excel D12 Max 78 (SK78) is 1,145Marlow Excel D12 Max 99 (SK99) is 1,400Marlow M-Rig Max (DM20) is 1,337, LIROS D-Pro-XTR (SK99) is 868LIROS D-Pro Static (DM20) is 1,140, The Hampidjan (recommended by Colligo) 8mm rope is. With a masthead rigged boat, the backstay can be used to increase forestay tension in high winds. We have chosen a Class40, a sister-ship of the boat with which I competed in the Global Ocean Race 2011/2012. (If you prefer more choices, please see our Running Rigging Builder.) document.getElementById( "ak_js_1" ).setAttribute( "value", ( new Date() ).getTime() ); This site uses Akismet to reduce spam. After attempting to sort through the many personal opinions on appropriate wire size for Atticus, Jordan decided to study up on the scantling equations for mathematically determining for ourselves the safest yet most economical size for our rig. If you have any questions, please dont hesitate to call or email us and we would be happy to help you. Keith Anderson is a 40-year veteran of the crane and rigging industry. Continuous rigging is made up of single pieces of wire that run from the top of the rig to the deck allowing the tuning to be done at deck level. 1x19 Wire Rigging Stainless Steel 1x19 Wire Rope Rigging is the most popular solution for standing rigging on cruising yachts. In fact, I had sailed on an identical boat for a total of about 60,000 miles. All in all it will probably only change your solent to staysail switch point by a knot of wind or two. And PLEASE do not buy a used boat without a professional rig inspection! Historically, the most traditional rig type is the masthead one. The benefits are less windage and less weight aloft. Usually they are made with dyneema and not just simple polyester. Atticus Update 66: Calculating wire size for standing rigging Type in the parameters 2. So we are looking at approx 9300kg breaking strain Dyneema. That has two ways of calculating the size. This is not to say it was already set right, but we had zeroed the lateral tension errors. The Pogo 2, designed around 2003-2004 is the Mini 650 with most boats built. Despite that, they do all agree that Dyneema needed to be sized for Stretch rather than for Strength. Taking into account boat length and sailing style, the attached chart suggests rope diameter and type for each piece of running rigging: Rope Diameter and Type. Hole diameter-to ensure the new pins will fit correctly. The eye will serve as your pin center. Those methods give a guide to sizing the wire for the 10M. At first, you will only see fields for two loads (Load 1 and Load 2), but once you enter a value for \small x_2 x2, the fields for Load 3 will show up . If you cut heat stretched SK90 or 99, you will get 12 strands that fall apart. Put one end of the tape on the pin at the terminal held in the turnbuckle on deck, then stretch out the tape until you reach the terminal holding the eye to the tang up the mast. This is to avoid the unpleasant situation of having a hard time getting to re-attach one. In particular, the curvature between the first set of spreaders and the masthead increased. Jusben Engineers is a major B-BBEE engineering, construction, and maintenance contractor, delivering complex . The initial task is totake some basic measurements.A good tape measure combined with a good eye may be sufficient, but vernier scale calipers will guarantee an accurate result.Digital versions are now available at a very affordable price and they make the process very simple to read and record. This on a mast with two sets of spreaders. tension them and observe the effect on the mast, which for this type of boats does not have to be significant (Ill come back to this point). Since we also stand to gain when you replace your rigging, let us say that many insurance companies will not insure sailboats with aged rigging. Whats up? So we had left-right and fore-aft problems. The numbers in the Toss and Henderson calculations were for a 2.5 safety factor. more expensive!) For safety and peace of mind, however, sailboat chainplates require attention and possibly upgrading. This is considerably less expensive than a full re-rig and, again, may identify issues before they become catastrophic. Choose the profiles, suppliers and materials from the database 3. Calculate the length of bury. The rake depends on the relationship between the length of the forestay and the shrouds as a whole. Make sure your turnbuckle is centered between the studs for accurate measurement. The wire diameter We gave the forestay one more turn and removed a turn from the V1s and we were satisfied. Stainless Steel 1x19 Wire Rope Rigging with KOS Wire - Jimmy Green The simplest and quickest way is to use a rig-tension meter, such as the Loos gauge. Again, increasing the line diameter reduces the problem as does being able to get enough tension to stretch out the elasticity so that the rig doesnt flop around. Speaking of standing rigging we have to open a parenthesis on the types of rigs possible for a sailboat. A UK Chartered Engineer and Fellow of the Institution of Mechanical Engineers he has, since 2001, managed the rigging engineering group at Bechtel. Two full turns lengthened the V1s by 7-8mm and the impact was visible to the naked eye. I'm a little confused. They sell 100m drums and 50m hanks which is handy (they can also make custom lengths with a variety of splices etc). Elastic Stretch is much the same to work with as creep except that it will show up quite quickly, so a few re-tensions in the first few months should sort it. Photos will help, but detailed dimensions are essential to ensurecorrect identification.If practicable, send a sample fitting or wire stay to the Jimmy Green Rigging Team.We can then relieve you of the responsibility by positively matching your existing terminal to the correct replacement. The overall shroud load is divided up between your shrouds. SCT also includes various modules to perform calculations ISO 12215-6, 8 and 9. 20% is 576kg so if we size at the 10% we get 5760kg (we can simplify the calculation to looking for a Dyneema line that is at least twice the breaking limit of the stainless it replaces).
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