The wire is inserted into the hollow terminal and pulled through a set of roller dies. The rig of this boat is not particularly extreme or delicate, being the Class40s designed for great ocean navigation. Once the wind increases and we take the first reef, the runner is no longer needed (especially upwind). Be aware that this is not a simple conversion and can be quite expensive. On DayBoats, Trailer Sailers and small yachts, a standard 1x19 wire can be bent around a stainless-steel thimble and Talurit pressed into position using a copper ferrule. Lets go up whenever there doubt. To calculate the load on a particular sling leg proceed as follows: Take the total weight of the load and divide this by the number of legs supporting the load. There is nothing more expensive than a cheap boat! Taking 70% of the lower shroud capacity gives a safety factor of 3.4. And word of warning jobs often get expensive because the customer decides, once the mast is down, to add furlers, masthead units, new sheets and halyards, etc. The list of materials and design stresses are those that ISO 12215-5 standard says that can be used. What is meant when we say they are structural? Threaded Bronze Inserts ensure superb adjustment without seizing or galling and the swivel toggle action allows full articulation in two planes. In our case the mast bent too far forward and the forestay was particularly soft. First we wanted to take care of putting the mast straight and solve the problem of its excessive rake. Add shackles and splices from our Running Rigging Builder How to set up your rig: tension your shrouds on masthead or - PBO Please note this article is a translation and may contain some errors for which I hope youll forgive us! As you size up creep and stretch will always be reduced. Check the deck around the chainplates and mast for cracking and delamination. Two full turns lengthened the V1s by 7-8mm and the impact was visible to the naked eye. rope than a cruiser. Forum posts represent the experience, opinion, and view of individual users. Designers typically specify standing rigging and attachments, including bolts, that are 1.3 to 1.4 times stronger than the calculated load. A change of about 1.5cm that was well noticeable at a height of 20 meters. If I were to replace with stainless I'd be looking at a total of 310 feet of 1/4" SS for the main and 120 of 3/16"SS for the mizzen NE ropes has STS-HSR. Thanks John. Question: My halyard is binding. Staying within elastic limits gives safety factors of 2.5, 2 and 1.9 respectively. However, in long race, especially single-handed, offshore, it has some human contraindications. Replacing your turnbucklesCheck the thread size (standard or upsize)Select a turnbuckle which provides articulation e.g. This will help to prevent metal fatigue.Check the dimensions of the fixing points for your shouds and stays, traditionally known as Chain Plates: The picture below shows a swageless eye terminal (top), a Talurit eye (middle), and a swageeye terminal (bottom).Swageless terminals are characterised by a short overall length and a relatively wide body diameter.Taluritis the process ofpressing the wirein a soft copper ferrule.Swages are slim and relatively long overall. Replacing Your Standing Rigging - RIGWORKS INC. I hear about these guys on every forum everywhere. As for the adjustments to runners and checkstays, I leave them last, as we will see there are various options on how to use them. The goal is to give the mast a beautiful shape that does not have strange kinks in its curvature and especially any inversions etc. You may need to apply pressure to stretch the wire straight, you may find it helpful to use a line or block and tackle. 50 or so lbs up in the air, which translated to 200 less rail meat lbs! The de-multiplication of the runner pulleys obviously amplified the effect on the control line. This curvature lets you bring the fat of the mainsail forward flattening the sail. This T-bone, if forgotten closed, supports the mast only at the level of spreaders, leaving the masthead free. We wont be re-rigging the main until after the 2021 season so have plenty of time to measure properly. 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. rope), you will want to consider length, diameter, stretch/performance, material/construction and, of course, price. 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.). The picture below reveals the variation in thickness and head angle to the swage. The reality is that Creep, even in SK75, can easily be designed around for standing rigging on a sailboat. When I run my training centre I used to say that they were not part of the standing rigging but that for good practice we would treat them as such. Our calculator is easy and simple to use. [Update] or 9mm DynICE Dux for the Mizzen and 12mm for the Main. Z-Spars, Isomat.Opposite UNF thread is very rare and will entail changing the whole turnbuckle to avoid a bespoke solution. This is especially important for the forestay attachment if it is an integral part of the stemhead fitting. The most popular choice is the Stalok version (top) which utilises a chrome-plated, forged bronze body. Stretch the wire straight and ensure there are no bends in the wire. Of course what we have not been able to compare fully is the performance of Marlow vs Liros in heat treatment, pre-stretch and coatings. Spinnaker Sheet / Guy - Boat length x 2. But I have seen many badly adjusted masts and not by just a little. In our case it was evident that the port turnbuckle had many more turns than the starboard side, compared to the thread of the V1 above. The wind was not much but enough to load the mainsail close-hauled and verify that the mast remained straight. The Event, its name, logo, website, social media pages and all their content are the sole property of Marco Nannini LTD. All rights, title, intellectual property, Copyright, contractual and other entitlements of and relating to the Event, its name, logo, website, social media pages and all their content, vest in and are retained by Marco Nannini LTD. Hole diameter-to ensure the new pins will fit correctly. Jordan freshens up on his high school math to calculate what wire size we should order for our new standing rigging. Standing Rigging CalculationBack to Rigging By appearances the 10M is a very heavily rigged 33 footer. In particular, the curvature between the first set of spreaders and the masthead increased. I'm not sure that the distribution of the force on the sail, in force at the top and on the boom, is correct. Both are based on the this formula: RM30 is the righting moment at 30 degrees heel Add that amount for each splice (it won't amount to even 36 feet in either case), plus the distance around the thimble. Therefore, except in exceptional cases, starting from this assumption is more than reasonable. Shaking the furled headsail gives an idea of the tension of the forestay. On this Class40 the runner was attached to the first pulley and therefore its length was a given and could not be adjusted. Choose the profiles, suppliers and materials from the database 3. Certainly distributing the tension between runner and checkstay greatly reduces the load of the standing rigging. Hey all, I'm going to do my standing rigging myself with Dyneema using thimbles and dead eyes. zurich insurance sydney webpack exclude node_modules moorage on lake washington hockeygymnasium stockholm halfords power steering fluid is bowers a gypsy name. That is, if the D1s are too tight and the V1s too, we can even force in an inverse curvature. 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. We are confident that you will look forward to our emails. That is, the turnbuckles had not been hooked and tightened at the same simultaneously on lower and upper thread. 100m of the 8mm should be plenty for the Mizzen with enough spare to replace several shrouds.Possibly from our back of the envelope calculations 150m of the 12mm for the Main should also give enough for several replacements. We've reduced the choices to a minimum to make ordering as simple as possible. Rigging size | SailNet Community - MyR: software for the calculation of masts and rigging. We start by calculating the designed tension of the shrouds by assuming it is no more than 20% of the breaking strain of the stainless steel. Beam Load Calculator The Pogo 2, designed around 2003-2004 is the Mini 650 with most boats built. Website created by Primeconsulting. You can also see our newsletter archive here, How to Identify and Specify Your Standing Rigging Components, LIROS Polypropylene Floating Mooring Warps, LIROS Super Yacht Mooring Polyester Docklines, Mooring Lines - LIROS Recommended Diameters, Mooring Warp Length and Configuration Guide, How to estimate the length of a single line Mooring Strop, LIROS 3 Strand Polyester Spliced to Chain, LIROS Octoplait Polyester Spliced to Chain, G3 Calibrated Stainless Steel Anchor Chain, The Jimmy Green Guide to the Best Anchor Ropes, Anchor Rope Break Load and Chain Compatibility Chart, Calibrated Anchor Chain - General Information, Calibrated Chain - Break Load and Weight Guide, Galvanising - Managing Performance and Endurance expectation. The direction of the thread is only of vital importanceif you are planning to change the stud terminal, but keep the existing turnbuckle.Take a close look at the two different threads in the picture below.Thehigher sidedenotes thedirection of the thread. We therefore started by loosening the V1s by two full turns, observing a reduction the bend. Chainplates Revisited - Practical Sailor If you have a lashing in the design you can have shorter shrouds and a longer lashing so that you have plenty of space to keep tension as creep lengthens the shroud. Know the sizes and lengths you need? 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. Type in the parameters 2. Attachment to the deck, the bottom terminalsDecide whether you are going to replace the turnbuckles (rigging screws) or just the end terminals.If the turnbuckles are the same age as the rest of the standing rigging, or they show any signs of fatigue, it will be prudent tostart afresh with all new components. Take your measurements from pin center to pin center as seen in the diagram. This is considerably less expensive than a full re-rig and, again, may identify issues before they become catastrophic. It was clear, however, that we had moved the mast head forward several centimetres and the excess rake was gone. They show up on your doorstep ready to use. My guess is 3/8". The checkstay, on the other hand, usually points where the foresail forestay attachment is located. Heat stretching is a bit like work hardening so if the fiber is already work hardened then the heat stretching at the braided level does not produce the Densest braided structure that you can get if the Dyneema fiber is not heat stretched before braiding. The rake shifts the sail centre aft and the bend in the mast flattens the sail, both of which we do not want in light winds. From the Rigger: Most boat owners do not climb their masts regularly, but our riggers spend a lot of time up there. Set sail with the benefit of Team Jimmy Green expertise. Maintain your standing rigging! I am not aware of any such cases among Class40s. Sounds interesting regardless. Do it yourself Standing Rigging Quotes - Jimmy Green Then it made a bend to the right and then back to the left between the second set of spreaders to the masthead. The slightly more expensive Petersen Stainless version (top) is machined from aluminium bronze bar with the open centres offset drilled from both sides making it 20% lighter than forged equivalents and equally strong. a toggle fork at the bottom end. Raise then the equations of equilibrium will be more easy task. Or maybe a lot of other boats are under-rigged? 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. Global Solo Challenge Copyright 2022. He is the engineering, construction and project management specialist company's chief rigging engineer. I can do the reverse test and see if the opposite set causes bend to leeward. For example, when setting the runners, it was noticeable that the working points of the control lines had moved by about 20cm. And yet I have read that once stretched to its working load, regular Dyneema will stabilize and then experience even less creep than DUX. We are Patreons of Rigging Doctor, the combination of their YouTube channel and website has more practical resources on real world cruising use of Dyneema than any other Ive found. You can use a large nail or screw on the dock. Global Solo Challenge Copyright 2022. 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 8mm stainless steel the breaking strength is 4640kg. As Jimmy Green put it in an email to me In terms of picking between DM20 and DynIce Dux, the choice comes down to whether you want the better performing fibre (DM20) or the better performing rope once braided and heat stretched (heat stretched SK75). Search by manufacturer's part # or brand. Condition of sling - passes all inspection criteria. These are boats where you usually an average setting and not touch it before a specific event. They are not included in our estimate. For example, port upper shroud (fig 3) or forestay (fig 1). The wire diameter 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). But, the overall curve of the three sections of the mast was not yet regular. for my sailboat? The tension of the low diagonals D1s controls the angle up to the first set of spreaders of the overall curvature that the mast takes up to the masthead. I might have gone for 9mm if Liros offered that. standing rigging size calculator. One thing I would like to add is the reasoning behind using Dyneema SK75 that is heat stretched for standing rigging Vs the new chemistries like SK90 and SK99 that are heat stretched. We would be happy to loan you a tagline (strong and thin) to use as a place holder, or we are always happy to visit your boat and tag it out for you. Good question. There is no one-size-fits-all with running rigging. The simplest and quickest way is to use a rig-tension meter, such as the Loos gauge. Still, as we will be doing the splicing ourselves, it isnt the end of the world if we need to shorten the shrouds once or twice in their life. From them we get either 7 or 9mm for the Mizzen and 11mm for the main. If the D2s are set correctly setting each pair of runners and checks in turn should not produce any curvature either side from the first spreader to the masthead. Make sure your turnbuckle is centered between the studs for accurate measurement. The swept back spreaders ensure that the mast can stand up even without the backstay, which is no longer structural. Stainless Steel 1x19 Wire Rope Rigging with KOS Wire - Jimmy Green We always look forward to seeing you! 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).