Write down the number and move on to the next stay. We use the highest quality standing rigging components available, and we won . When riggers cut rigging in the workshop they are very unlikely to make pairs of shrouds of different lengths. All rights reserved. So I am going to be adding Hampidjan DynIce Dux into my calculations and it is cheaper than the LIROS D-Pro-XTR, plus available in more sizes. The Supajust Eye Toggleand Swage (bottom) is a high specification stainless steel open body turnbuckle. 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. 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. Standing rigging definition, rigging remaining permanently in position as a means of steadying various spars, shrouds, stays, etc. If we observe the mast we will also notice that this setting will mean that when tightening runners and checkstay there isnt much change in mast shape. First, we multiply the load by 1.5 to approximate the rest of the righting moment beyond 30 degrees, and divide by half of your 10-foot beam. It is adopted by shipyards such as Jeanneau and Beneteau, even for boats without oceanic ambitions. A customer came into our shop the other day to discuss his 33-year old rigging. Your email address will not be published. That said, on a nine-tenths rig it is unlikely that you could break the mast tip under spinnaker just because you did not set the runner. I see DSM is coming out with DM20 which is a heat treated pre stretched fiber. Get regular rig inspections! First of all, the mast was not straight, it pulled to the left until the first set of spreaders. Generating 3D hull using only picture of boat. To fix a mast like this, with multiple problems, you need to have a method to get to a satisfactory result. The Hamma Spoon and Petersen Shroud terminals are designed as direct replacements for the discontinued Navtec T-terminal. In order to confidently specify a replacement for any element of your standing rigging, you will need to know what your existing components are called and how they are measured.Some end fittings have generic names e.g. At the same time, by vertical compression of the mast, tensioning the backstay causes a bending of the mast that flattens the main. With the boat in the water and not wanting to take any risk, we didnt want to get to unhook any turnbuckle. This will certainly lead to creep issues and probably re-splicing if you use turnbuckles. Jusben Engineers is a major B-BBEE engineering, construction, and maintenance contractor, delivering complex . Deckvests need to be maintained so that Read more, Genoa Halyard (fractional rig) Mast length x 2, Spinnaker / gennaker halyard Mast length x 2.5, Main Sheet Boat length x 2.5 (varies with the mechanical purchase being used), Asymmetric Spinnaker Sheet Boat length x 2.5 to 3, Reefing Line (reef 1) Boom length x 2.5. Certainly distributing the tension between runner and checkstay greatly reduces the load of the standing rigging. Question: Do you have guidelines for selecting halyards, sheets, 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. Required fields are marked *. This could happen if theres something inherently wrong with the measures taken that would forced you to work at the limit of the available turns. All standing rigging is manufactured right here in our rigging shop -- the way it's been since 1984. This is our highest recommendation to make sure your rig fits properly. If your running rigging leads back to the cockpit, remember to account for that in your length. Overall, if you think you have a part that is not listed here, email a photo to the Jimmy Green Rigging Sales team and we will take a look. a toggle fork at the bottom end. The next two methods are basically the same but use slightly differnt load levels for the shrouds. Your email address will not be published. In addition, runners reach the masthead. This explained why the head of the mast pointed to the left after the initial bend. Lay out the wire and attach one end of your wire segment to a secure fixed point. Thanks John. Contrary to popular thought, a slack rig is more punishing on a hull than a properly adjusted, tight rig. Finally, should you decide to sail with that old rigging, consider checking out the Ask the Rigger article titled Rigs Fail Are You Ready? at http://rigworks.com/rigs-fail-ready/. I don't have a direct figure for RM30 but I do have IMS measurement data for the 10M and can extrapolate a pretty good approximation. One of the most frequently asked questions we hear is: How do I measure my sailboat standing rigging? standing rigging. We had created a perfectly straight mast track, an adequate rake and a pre-bend. Driscoll Boat Works and Shelter Island Boat Yard are both within walking distance of Rigworks. This table shows the normal UNF thread sizes for each wire diameter: This table shows the normal Metric sizes for each wire diameter: Note that there is no natural metric equivalent to 7/16" i.e. Gerr and Toss both note that the lowers get more load than that and when there is more than one each should be capable of handling the full load. Decide which you want (no doubt Colligo has a guide for bury amounts of their DUX). The evolution started with offshore sailing boats such as the Mini 650s and Class40s and now it is very widespread also among cruising sailboats. Rig designers will calculate the optimum length of the unsupported lengths, or . Plus there will be more spare strength if there is UV or Chafe damage. The Lift-All Sling/Leg Length Calculator has been designed to assist you in selecting the appropriate size slings for your lifting applications. The strength, minimal elongation, excellent corrosion resistance and general performance of KOS 1x19 construction stainless steel wire are suitable for most sailing yachts. We wont be re-rigging the main until after the 2021 season so have plenty of time to measure properly. The picture below reveals the variation in thickness and head angle to the swage. chunkier appearance than forged parts because the internal grain of the material remains parallel, requiring some faces to be longer to retain strength. They are not included in our estimate. Unfortunately, there are not always visual clues that your rigging has passed its life expectancy. For example, assume a 2,000 pound load is to be supported by 2 legs of a sling. This is not to say it was already set right, but we had zeroed the lateral tension errors. When planning Dyneema rigging the area we have found most confusing is deciding on the size of Dyneema we should fit. Their role is not simply to contain the main when dowsing it. RIGGINGS AND MASTS CALCULATIONS ONLINE RIGGINGS AND MASTS FREE DATABASE: Just in 10 minutes! The problem is solved with the introduction of structural lazy jacks. Find a flat surface large enough that you can fully stretch your rigging out for measurement. This post has taken an age to research and write. Is it maybe, just maybe possible that they have cornered the market on synthetic standing rigging through a, Location: Bas Caraquet, New Brunswick, Canada. From the Rigger: First, if your old rope served its purpose but needs replacing, we recommend duplicating it as closely as possible to ensure that the replacement is the correct length and works with your existing clutches, winches, etc. When measuring rigging, the convention is to measure from pin center to pin center or from bearing point to bearing point. Hole diameter-to ensure the new pins will fit correctly. The mysteries of sizing Dyneema standing rigging. Can Galvanised Steel be used with Stainless Steel? Replacing your turnbucklesCheck the thread size (standard or upsize)Select a turnbuckle which provides articulation e.g. Stainless Steel Wire Rigging and Wire Rope, Guard Wires, Guardrails and Guardrail Webbing, Replacing your Standing Rigging - a step by step guide, Sta-Lok Rigging Terminal Fitting Instructions, Why choose Compacted Strand for your Standing Rigging, Stainless Steel Wire - Quality Control and Care, Stainless Steel Wire Break Load Comparison, LIROS 3 Strand Lashing, Lacing and Lanyards, LIROS Braided Lashing, Lacing and Lanyards, Running Rigging Rope Fibres and Construction Explained, Dyneema Rope - Cruising and Racing Comparison, Running Rigging - LIROS Recommended Line Diameters, Running Rigging Break Load Comparison Chart, Selecting the right type of block, plain, roller or ball bearing, Custom Build Instructions for Sheets, Halyards, Control Lines, Comparison and Review of Dyneema Soft Attach Low Friction Ring Products, Bending and Hoisting Methods for Sailing Flags, Courtesy Flags Identification, Labelling and Stowage, Glossary of Flag Terms and Parts of a Flag, Petersen Stainless - Upset Forging Information, Thimble Dimensions and Compatible Shackles, Guard Wires - Inspection and Replacement Guidance, Webbing Jackstays - Custom Build Instructions, Danbuoy Instructions - 3 piece Telescopic - Offshore, Man Overboard Equipment - World Sailing Compliance, Safety Marine Equipment List for UK Pleasure Vessels, Helly Hansen Mens Jacket and Pant Size Guide, Helly Hansen Womens Sailing Jacket and Pant Size Guide, Clearance 1kg Automatic ABC Dry Powder Fire Extinguisher, August Race eco-Shotz - Boat Cleaning Kit, Clearance A5 Polyform Heavy Duty Buoy Fender, Strap Toggle - also known as a Toggle Fork, development of the fixed fork - features a transverse bar withan articulating fork attached- for attachment to a mast plate with a hole drilled through it, also known as a mast tang, Shackle Toggle - development of the simple eye featuring a permanently attached D shackle- for attachment to a mast tang. 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. From the Rigger: Most boat owners do not climb their masts regularly, but our riggers spend a lot of time up there. This translates into a less dense braided product that produces more constructional elongation when put under a constant load, like pretension in your rig. I have to study the correct way to approach this problem. The distance between the halyard and the mast at the boom is your rake. Factors you must consider include: Type of hitch/method of rigging. One method of seeing this is to take a piece of Dynice Dux (SK75) and cutting it with a very sharp knife, you will get what looks like a single line made up of 12 cells, it holds together that well. The line denotes the measurement point used bythe Jimmy Green Rigging Team. The other positive about Dynice DUX is that it is only slightly more expensive than Vectran or Dyneema, vs. PBO which is incredibly expensive. - MyR: software for the calculation of masts and rigging. Dont trust us for the sizing of your own rig! The very fact that the mast remained straight even when runner and checkstay were tightened gave me good confidence that I had already adjusted the D2s correctly. Balancing the risks and benefits, at the end of the day, on my boat I decided to eliminate the T-bone and seek for a medium setting. Looking at the Jimmy Green table for all the Dyneema they sell we find that 7mm is good (except Liros dont sell 7mm so it has to be 8mm for the Liros D Pro Xtr [SK99] or 10mm for the Liros D Pro Static [DFM20] ). There isnt even a topping lift to support the boom when reefing. These are boats where you usually an average setting and not touch it before a specific event. It is important to understand the influence of stay-V1 on the rake. The listed prices for standing rigging by model reflect the rigging shown in our diagrams. However, between the sites we have found at least four ways of deciding what size is needed. It can be minimised by keeping static loads as a small % of the breaking strength, so grades of Dyneema with a higher breaking strengths will creep less under the same load. If your rigging includes a shackle with a captive pin, the inside edge of the pin is the bearing point. For decades now, however, fractional rigs with swept back spreaders have been increasingly widespread. Here are a few suggestions. 119 316 grade stainless steel Wire Rope (1 group of 19 wires, very stiff with low stretch) is standard on most sailboats. Runners attachments seen from the mast top Although the mast is made of carbon rather than aluminium, the rig is the same as that of a Mini 650 Pogo2 from Structures shipyard. 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). 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). Maybe I was being a bit hyperbolic when i said that dude was 3x the amount of competitors. In the design of the Dyneema chaimplates I mentioned sizing them up, but of course the line is doubled so Ill use the same size for the chainplates as for the shroud/stay attached to them. 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. a) we need to replace the mizzen rigging before we launch b) there is no dock or anything at the boatyard so difficult to do c) Im not sure how this would work for a mizzen mast as it is shorter and so far aft, therefore it would be very difficult to heel the boat that far with just the mizzen and not very typical of the mizzen usage. Give us a call, and we can give you a rough quote. 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. The Pogo 2, designed around 2003-2004 is the Mini 650 with most boats built. We are not experts but just trying to show our thinking processes. The wind was not much but enough to load the mainsail close-hauled and verify that the mast remained straight. The flogging of a loose shroud can actually be harder on wire than steady pressure. By giving the D1s a few symmetrical left-right turns we were able to straighten the lower part of the mast. for a mid 20 ft boat, the same change in riggin saved as little as 50 lbs. So the 3 different calculations give us (for the Liros D-Pro-XTR), Colligo (SK75): 7mmMarlow from Jimmy Green (DM20): 12mmRigging Doctor for SK99: 8mm, Colligo (SK75): 11mmMarlow from Jimmy Green (DM20): 15mm (but 13mm is pretty close)Rigging Doctor for SK99: 10mm. Lower Fore St, Beer, East Devon, EX12 3EG. And PLEASE do not buy a used boat without a professional rig inspection! Control Lines: Outhaul - Boom length x 2. The overall rake was still excessive. The top terminals that attach to the mast vary according to the origin (manufacturer) and the age of the mast.It is also important to bear in mind that there may have been some significant alterations since your yacht was first commissioned.The basic formats for swaged ends are Fixed Eye, Fixed Fork and T-terminal. From the Rigger: Lets play Name that Stay Forestay (1 or HS) Read more, Question: Do you have guidelines for selecting halyards, sheets, etc. 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. 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 Dyneema sizes can be the same as for the 6mm Stainless above except that the Marlow M-Rig Max (DM20) might be better in 8mm. Herb suggests under 15% or even better under 10%. Therefore, except in exceptional cases, starting from this assumption is more than reasonable. We are happy to help you pick the best rope for your application. We have also said that the mast of a Class40 is not quite so bendable and adjustable. We have a huge rope wall at Rigworks and are very proud of our selection and expertise. This meant that the V1s tension encountered no resistance to mast compression. That is, the turnbuckles had not been hooked and tightened at the same simultaneously on lower and upper thread. Sizes .172 to .375 and 4.4mm to 9.5mm. For more information on rig inspections, visit our prior Ask the Rigger article at http://rigworks.com/the-scoop-on-rig-inspections/. I am not aware of any such cases among Class40s. Please call us at 1.888.535.7326 if you need a quote for standing rigging not listed on our site. Tapped and Formed:Some Swage and Swageless terminals are made of several components.These partsmay be tapped together like the strap toggles below. Stainless steel isnot a malleable metal, so the pressure applied by the roller dies is exceptionally high, creating a solid bar of material. Our calculator is easy and simple to use. 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. Their role is to prevent the mast from bending to leeward between the first and second spreader levels, especially upwind.
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