This characteristic of heat stretched SK75 is indeed the reason that Hampidjan is still using this old chemistry of Dyneema and not moved on to the new stuff. Unfortunately lots of the information isnt clear about which they are referring to in their guidance. We had no option but to intervene by shortening the forestay, which in this case was adjustable. 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. In addition, runners reach the masthead. This is the figure I used in the formulas below. For an average 40-foot boat, Cockerill estimates about $100 per foot to re-rig with wire rigging ($4,000), as well as the round-trip cost to haul and launch the boat and unstep and step the rig (an additional $2,500 or so). If a rigging screw is supplied as part of a finished wire, the measurement will be made with the screw two thirds open as shown below. There is no one-size-fits-all with running rigging. I have a 1988 Catalina 22'. Calculate the length of bury. On the Class40, even though the boom is made of carbon, we can imagine how much the boom plus mainsail would weigh especially if full of water. Set sail with the benefit of Team Jimmy Green expertise. The standing rigging is all rod on this boat. I relied on my historical memory and everything seemed to me in order. 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. If they are both too tight the mast becomes straight like a telegraph pole losing its beautiful shape. With the boat in the water and not wanting to take any risk, we didnt want to get to unhook any turnbuckle. Sort by: The next two methods are basically the same but use slightly differnt load levels for the shrouds. Is it maybe, just maybe possible that they have cornered the market on synthetic standing, Colligo, Colligo, Colligo. The standard seems to be 2.5 to 3.0. Of course, you are welcome to label all your rigging, pack it up and send it to us to replicate.If you live near enough, you can bring the rigging yourself and discuss it with our Rigging team, it will be well worth the trip :-). The boom will rise again when we tension the reef line and this rarely even needs the boom to be helped by hand. Driscoll Boat Works and Shelter Island Boat Yard are both within walking distance of Rigworks. Historically, the most traditional rig type is the masthead one. We have a huge rope wall at Rigworks and are very proud of our selection and expertise. Also Marlow describes them all and includes comparison charts. It is important to use a tape measure under tension and that does not stretch. Our running rigging calculator can instantly spec lines for more than 5,000 sailboats. The port V1 was 2cm shorter than the starboard V1. To bring everything back to zero tension, I went up to the first set of spreaders and loosened the D2s which I would then adjusted last. For decades now, however, fractional rigs with swept back spreaders have been increasingly widespread. The evolution started with offshore sailing boats such as the Mini 650s and Class40s and now it is very widespread also among cruising sailboats. The wind was not much but enough to load the mainsail close-hauled and verify that the mast remained straight. Asymmetric Spinnaker Sheet - Boat length x 2.5 to 3. I have an older Hallberg Rassy 35 (yep, thats the new challenge) - and currently the rigging appears to be 5/16" wire (that's what the local rigger measured, it seemed slightly smaller to me but he probably does a better job at measurment). On this Class40 the runner was attached to the first pulley and therefore its length was a given and could not be adjusted. The only downside to Dynice DUX is that it is quite stiff when new, and will take a few days of sailing to soften up. But I mean, why dont hey have prices listed on their site?! NE ropes has STS-HSR. ). The t-bone extra adjustment will not give you extraordinary gains and advantages upwind as theres only so much extra bend you can put in with a runner and loose checkstay. The picture below reveals the variation in thickness and head angle to the swage. The first is the RM30 heeling test to calculate rig loads. You can use the righting moment and rig geometry to calculate rig loads. This is mostly a problem if you only use turnbuckles due to their limited range. Most lines are pre-stretched. Our calculator is easy and simple to use. 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. For the moment I wanted to see the mast without no tension in the D2s. Lets go up whenever there doubt. chunkier appearance than forged parts because the internal grain of the material remains parallel, requiring some faces to be longer to retain strength. Thanks, very interesting and helpful. What makes this even more complicated is that a) there are lots of variations of Dyneema available, also b) each rope manufacturer has their own ways of treating Dyneema (eg pre-stretch, heat treatments, and coatings) which makes comparisons even more difficult. On a Mini 650, to avoid too many lines, and with a boom that weighs a few kilos, nothing replaces the topping lift. It is important to understand the influence of stay-V1 on the rake. It does seem like some competition is popping up here and there for dux. We deal directly with the manufacturers of the sailboat standing rigging components that we sell, and we know the product because we use the product. 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). As we were stationary in port and without sails, I could totally ignore the D2s until the end. Herb suggests under 15% or even better under 10%. From the Rigger: We are so glad you asked! For the Main Im thinking 12mm (larger than either the Colligo and Rigging Doctor calculations) and the largest size of Liros D-Pro-XTR available). There isnt even a topping lift to support the boom when reefing. Braided line density is the key to eliminating constructional elongation over time. Attachment to the Mast, the top terminals. The overall rake was still excessive. My personal opinion is that when offshore racing it is best to avoid easily avoidable risks. For example, low stretch is very important in a halyard but not necessarily in a sheet. Seldn estimates the main reef clew force to MSL (maximum in service load)=5.5kN, the reef tack load to MSL=3.5kN (10 Newton=1 Kg f). The price difference of the DM20 lines over SK99 or SK78 is still huge. standing rigging size calculator. Tapped and Formed:Some Swage and Swageless terminals are made of several components.These partsmay be tapped together like the strap toggles below. I was satisfied with the shape and only the sea trials could have confirmed the correct setting of the D2. The lazy rigger screws the turnbuckle on deck a few turns so that he has only to hook the vertical shroud, the V1. What does all this mean? The backstay is both an element of the standing rigging but can also be tuned. I ran the numbers for the 10M by methods from three sources starting with David Gerr's book "The Nature of Boats." 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. 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. Despite the absence of a backstay its not runners or checkstays that keep the mast up. Remove any pins from your terminal ends before taking measurements. This fudge factor is intended to offset the fact that, regardless of the material used, it will degrade over time with aging and a lack of maintenance. Once swaged, the terminal cannot be re-used or positionally adjusted. Make sure your turnbuckle is centered between the studs for accurate measurement. 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. First of all, we unscrewed the turnbuckles of the V1s, whilst holding the upper threaded part integral together with the turnbuckle. 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. (If you prefer more choices, please see our Running Rigging Builder.) Or maybe a lot of other boats are under-rigged? So unless you had to do a short inshore event with light airs predicted changing the setting for each and especially longer races makes no sense. The boat was in the water, we first had to avoid the risk of unscrewing a turnbuckle and accidentally unhooking a shroud. One of the most frequently asked questions we hear is: How do I measure my sailboat standing rigging? 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. With proper measurements (wire diameter, pin sizes, wire lengths), we can give you a very accurate price for the standing rigging itself, but there are often unforeseen complications during the job (bad spreaders, corroded mast bases, hardware that is stripped on the mast, frozen pins, chainplates that are failing, etc. Rig designers will calculate the optimum length of the unsupported lengths, or . The Supajust Eye Toggleand Swage (bottom) is a high specification stainless steel open body turnbuckle. If you can get the cap, Colligo, Colligo, Colligo. 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] ). They replace the topping lift and support the boom. [End Update]. I can do the reverse test and see if the opposite set causes bend to leeward. 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. Control Lines: Outhaul - Boom length x 2. It is indeed a complicated process in using a braided line for standing rigging. This T-bone, if forgotten closed, supports the mast only at the level of spreaders, leaving the masthead free. The terminations for wire vs. rod can be quite different and require a lot of customization. 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. We do support educated do-it-yourself sailors if you are confident and understand the rigging process. I found the Colligo information less helpful, it feels to me that they have stayed with the same materials despite the new developments. Unstep the mast and remove the rigging from the boat. standing rigging size calculator Archives. While I would love to buy Marlow as a British company, they are a lot more expensive. As we go through the sizing calculations comparisons are difficult as they dont use the same version of Dyneema. 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. My understanding is if you allow for this and pre-stretch your stays you can reduce the need for re-splicing. a toggle fork at the bottom end. Question When should I replace my standing rigging? 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. Be aware that this is not a simple conversion and can be quite expensive. Spinnaker Sheet / Guy - Boat length x 2. As posted above it seems like synthetic standing rigging is still the wild west. A high-performance racer might require a lighter, stronger, lower stretch (i.e. I might have gone for 9mm if Liros offered that. I.e., that the problems were only in the adjustments of the turnbuckles. Website created by Primeconsulting. As you size up creep and stretch will always be reduced. If we follow the table they include from Marlow for their DM20 line (Marlow M-Rig Max) then sizing is huge: 11 or 12mm for the Mizzen and 15mm for the main. Therefore, except in exceptional cases, starting from this assumption is more than reasonable. 119 316 grade stainless steel Wire Rope (1 group of 19 wires, very stiff with low stretch) is standard on most sailboats. When buying new running rigging (i.e. SCT also includes various modules to perform calculations ISO 12215-6, 8 and 9. I see DSM is coming out with DM20 which is a heat treated pre stretched fiber. Taking the upper and a single lower of 5/16" gives a safety factor of 3.1. For safety and peace of mind, however, sailboat chainplates require attention and possibly upgrading. Once the sail was lowered and the retaining bolts were unscrewed, it was possible to raise the drum and access the forestay turnbuckle. The influence of forestay-V1 and D1 on the bend of the mast up to the first spreader. If your running rigging leads back to the cockpit . This is not to say it was already set right, but we had zeroed the lateral tension errors.