Is it maybe, just maybe possible that they have cornered the market on synthetic standing rigging through a, Location: Bas Caraquet, New Brunswick, Canada. The swept back spreaders ensure that the mast can stand up even without the backstay, which is no longer structural. Before Ordering Your Colligo Dux Rigging, lots of information and a range of Dyneema for standing rigging from different suppliers, Simplifying fitting a Jordan Series Drogue Sustainable Sailing, Dyneema / Synthetic Rigging Summary Sustainable Sailing, Dyneema Shroud and Chainplate progress Sustainable Sailing, Follow Sustainable Sailing on WordPress.com, DM20 (least creep, but also not as strong, most expensive), SK78 (the first Dyneema with reduced creep). In this case the forestay does not reach the masthead but only up to seven eighths or nine tenths of the mast height and so do the attachments of the shrouds. The picture below reveals the variation in thickness and head angle to the swage. See other options in diagram to the right. I replaced 3/16 rigging with 5/16 dynex dux and it's still ok after 10 years. Our preferred rope supplier, Jimmy Green Marine, has lots of information and a range of Dyneema for standing rigging from different suppliers. One area still to be worked out is how much length to allow for creep. How do I calculate righting moment? - Sailing Magazine 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). Having worked and checked with runners and checks the sea trial was more for the pleasure of ending the day with some sailing. These guidelines are particularly useful when estimating the cost of a project. Running Rigging Calculator - SailboatOwners.com When we fabricate a piece of rigging including a turnbuckle, we will make it to your specifications with the turnbuckle open 2/3rds to allow tuning of the rig. (If you prefer more choices, please see our Running Rigging Builder.) Add shackles and splices from our Running Rigging Builder After attempting to sort through the many personal. The wire is inserted into the hollow terminal and pulled through a set of roller dies. Working the 10M rigging figures backwards can give the safety factor Pearson applied to the 10M. And if in doubt, too long is always better than too short! If your running rigging leads back to the cockpit, remember to account for that in your length. says the wire was 1/4". Plus there will be more spare strength if there is UV or Chafe damage. We took then tightened the forestay by the same two full turns on the turnbuckle. For example, many chainplates are too thin to grip clevis pins correctly. 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. Stainless Steel 1x19 Wire Rope Rigging with KOS Wire - Jimmy Green Assuming it fits in our racks and we have room, we may be able to avoid mast lay day charges by storing your mast here at Rigworks. 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). I.e the mast will go backwards to the first level of spreaders then stard bending forward from there to the masthead. Dynice Dux or SK75 - RIGWORKS INC. We are happy to help you pick the best rope for your application. One other very important comment on sizing for creep: Material creep is a function of length, long sections will have more creep than short sections. All standing rigging is manufactured right here in our rigging shop -- the way it's been since 1984. But without mast height I suppose this is only partly covering the shroud angle issue? Stainless does not like to be deprived of oxygen, so keep tape off your rigging to avoid anaerobic corrosion. Sounds interesting regardless. With the D2s completeley loose, the D1s were obviously too soft too. Driscoll Boat Works and Shelter Island Boat Yard are both within walking distance of Rigworks. A high-performance racer might require a lighter, stronger, lower stretch (i.e. The Bluewave turnbuckle (bottom) is for racing enthusiasts who want to easily adjust settings on the water. 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 not willing to take the financial risk, are you willing to risk yourself and your crew? In this article we will deal with the tuning of standing rigging of a typical sailboat. 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. Get regular rig inspections! You may need to apply pressure to stretch the wire straight, you may find it helpful to use a line or block and tackle. A DIY Solution to Tired Standing Rigging - Sail Magazine Spinnaker Sheet / Guy - Boat length x 2. 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 flogging of a loose shroud can actually be harder on wire than steady pressure. It is indeed a complicated process in using a braided line for standing rigging. This App is a tool that facilitates the calculation of basic rigging, weights of different profiles, and centers of gravity of composite loads. With this procedure we were able to restore a situation where the two V1s shrouds were the same length and with the same adjustment. For example, assume a 2,000 pound load is to be supported by 2 legs of a sling. Thus your list is not suitable and not providing the correct strength for design allowable limits of mast alloy grades. For a rod of the size we were adjusting we needed a large and very expensive tension measurement tool. Is it maybe, just maybe possible that they have cornered the market on synthetic standing, Colligo, Colligo, Colligo. On this Class40 the runner was attached to the first pulley and therefore its length was a given and could not be adjusted. This explained why the head of the mast pointed to the left after the initial bend. The numbers in the Toss and Henderson calculations were for a 2.5 safety factor. Lift-All makes no guarantees that the information provided in the calculator is correct. If you cut heat stretched SK90 or 99, you will get 12 strands that fall apart. Others, such as Mr. E.Sponberg, make other distribution of forces. The wind was not much but enough to load the mainsail close-hauled and verify that the mast remained straight. Rust and discoloration can indicate the location of a crack or crystallization of the metal. Those details about the differences of heat stretching at Fibre vs braided level are hard to come by. This post has taken an age to research and write. The boom will rise again when we tension the reef line and this rarely even needs the boom to be helped by hand. The current shrouds are 5/32" diameter. The listed prices for standing rigging by model reflect the rigging shown in our diagrams. The standing rigging is all rod on this boat. Keeping your existing turnbucklesCheck the thread type (UNF or Metric) the thread size (standard or upsize)and, just to make sure, the thread direction. The pre-bend, at a given a setting of the V1s, is controlled by the tension of the D1s and D2s. Once the sail was lowered and the retaining bolts were unscrewed, it was possible to raise the drum and access the forestay turnbuckle. Suddenly you run the risk that with enough wind the checkstay could even cause the mast to reverse its curvature with the masthead going forward and the lower part held back by the tight checkstay. If you are in any doubt about replicating your existing T terminals, please take some close-up photos with dimensions - the width, shoulder length and overall depth of the T shape. How to use Tension Gauges - Loos & Company, Inc. So we are looking at approx 6500kg breaking strain Dyneema. Asymmetric Spinnaker Sheet - Boat length x 2.5 to 3. With the mast and rigging still standing and set to its normal sailing positions, tape or mark all the threads of the studs where they exit the turnbuckles. A UK Chartered Engineer and Fellow of the Institution of Mechanical Engineers he has, since 2001, managed the rigging engineering group at Bechtel. They are all full re-rigs from 119 wire with new rigging screws (please note all examples given are for supply only): 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. Could someone please speak of the advantages / disadvantages of increasing the. Still the biggest name that we have found producing fittings for Dyneema rigging. Seen from the side, the mast showed excessive rake and pre-bend that needed correcting. 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. Both SK90 and SK99 are heat stretched at the fiber level so that makes them a little more difficult to heat stretch completely at the braided line level. Once on deck I noticed that the mast was much better already, the forestay was tighter, even though we hadnt touched the V1s at all. Unlike the Gerr formula the RM30 formula accounts for shroud base width. 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. It provides some tables of the most common suppliers of slings and shackles, but the user can add its own tables. Running rigging - SailboatOwners.com Type in the parameters 2. The bend instead arises from compression of the mast given by the tension of the V1s, these pull down the mast that bends forward. From Marlow Ropes we have this: Others refer to Elastic Stretch, Constructional Stretch and Creep. 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. Illustrations from left to right below:Bluewave Hook Terminal, Hasselfors Flathead, Hamma spoon, Petersen shroud terminal, OS/BSI T-terminal, Sta-Lok T-terminal and Navtec T-terminal (now discontinued). 3000 # is not enough to get rid of constructional stretch, and you would need to sustain your load over time. First of all, the mast was not straight, it pulled to the left until the first set of spreaders. Although we work closely with the boatyard during the job, you will need to negotiate yard fees (crane, mast lay days, etc.) The forestay turnbuckle in this case, and like on many other boats, was inside the furling drum. Our riggers can also tune your rig, either at the dock or under sail. rope), you will want to consider length, diameter, stretch/performance, material/construction and, of course, price. Stainless Steel Wire Rigging and Wire Rope - Jimmy Green I think that's the real problem to solve. In fact, if the D2s had been too soft, when tightening the checkstay the mast would bend to windward. 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. Everything was in order throwing in a few tacks confirmed that the boat made sailed the same angle to the wind on both tacks. My experience with 2 different 28.5 footers that I have owned is that 7/32" for headstay, backstay, and upper shrouds are very sturdy. Historically, the most traditional rig type is the masthead one. Standing Rigging CalculationBack to Rigging By appearances the 10M is a very heavily rigged 33 footer. SCT also includes various modules to perform calculations ISO 12215-6, 8 and 9. This explained why the mast started veering to the left. Standing Rigging - Cable Loft The price difference of the DM20 lines over SK99 or SK78 is still huge. Tightening the left runner-checkstay pair seemed more or less ok. Starboard we clearly had a problem, the mast would bend to windward at the height of the second set of spreaders. This curvature lets you bring the fat of the mainsail forward flattening the sail. This is why Marlow recommends DM20 for standing rigging, even though the elastic stretch in DM20 is so much more. And both say having lowers at least the same size as uppers is a good idea. Heat stretched SK75 really performs better under a constant load. directly with the yard of your choice. I was satisfied with the shape and only the sea trials could have confirmed the correct setting of the D2. On boats with swept back spreaders, runners and checkstays are not structural. That's a little high because it's using the combined capacity of the lowers and reality will have them loaded differently. Once the wind increases and we take the first reef, the runner is no longer needed (especially upwind). Know-how: Modern Rigs 101 - Sail Magazine RIMAST - Masts and Riggins Calculations Website created by Primeconsulting. The Pogo 2, designed around 2003-2004 is the Mini 650 with most boats built. 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). That said, they play a very important role they help provide additional support for the mast. I jibed without runners in 50 knots of wind and nothing happened. 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. 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. The righting curve is fairly straight line from 0 to 35 or so and the rate is actually decreasing so using the 716 lbs/degree will give a slightly high value at 30 degrees which is nicely conservative. Imagine bearing away, removing the genoa and hoisting a large spi. On a Mini 650, to avoid too many lines, and with a boom that weighs a few kilos, nothing replaces the topping lift. 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. NE ropes has STS-HSR. Question: My halyard is binding. The original spec. I hear about these guys on every forum everywhere. Make sure your turnbuckle is centered between the studs for accurate measurement. Choose the profiles, suppliers and materials from the database 3. 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. Their sizing post is Sizing for Creep. The overall rake was still excessive. It also has a module for calculating continuous beams and large facilities for manage the various materials used in the construction of modern boats. [End Update]. By measuring the total length of the turnbuckles and exposed thread, many things could be deduced. Condition of sling - passes all inspection criteria. We have also said that the mast of a Class40 is not quite so bendable and adjustable. standing rigging. I need to do some more study and number crunching. Once you know the diameter of the wire, it will give you the load both in kg and as a percentage of its breaking strain. Calculating Dyneema for Standing Rigging - Cruisers Forum document.getElementById( "ak_js_1" ).setAttribute( "value", ( new Date() ).getTime() ); This site uses Akismet to reduce spam. We are not experts but just trying to show our thinking processes. 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. But have you ever seen a boat so rigged? In the Toss method 25% load was used for each lower shroud to match his example. Tapped and Formed:Some Swage and Swageless terminals are made of several components.These partsmay be tapped together like the strap toggles below. Just select your boat below and you're a couple clicks away from new, top quality rigging. Boom Vang - Boom length x 2. The spring-loaded ones suitable for adjusting the shrouds of a Mini 650 are useless. Each mast section is fitted with wire or rod sized to accept the loads generated at that section of the spar. 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 decades now, however, fractional rigs with swept back spreaders have been increasingly widespread. This is possible because the rod shroud is free to rotate inside its T-Cup at the spreader. When buying new running rigging (i.e. So, I resorted to trusting my sensorial memory. Hole diameter-to ensure the new pins will fit correctly. Search by manufacturer's part # or brand. Dont trust us for the sizing of your own rig! They have been very helpful in responding to email enquiries. Beam Load Calculator This is considerably less expensive than a full re-rig and, again, may identify issues before they become catastrophic. This turnbuckle features calibration, one extra-long stud and a fold-out arm to facilitate easy adjustments. This means that when the main halyard is released, the boom falls onto the coach-roof. The next two methods are basically the same but use slightly differnt load levels for the shrouds. This especially with loose D2s that do not prevent the section above from bending forward. First of all, we unscrewed the turnbuckles of the V1s, whilst holding the upper threaded part integral together with the turnbuckle. By giving the D1s a few symmetrical left-right turns we were able to straighten the lower part of the mast. This system with T-bone on the checkstay give you maximum flexibility and is obviously suitable for those who know how to use it. Having said that, even with SK75 creep is easy to design around if you know the creep properties for the material you are using. 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. Add that amount for each splice (it won't amount to even 36 feet in either case), plus the distance around the thimble. So 716 * 30 gives an RM30 of about 21,500 lbs. I have a ketch with 1/4" SS on the main and 3/16" on the Mizzen. The simplest and quickest way is to use a rig-tension meter, such as the Loos gauge. The Lift-All Sling/Leg Length Calculator has been designed to assist you in selecting the appropriate size slings for your lifting applications. If your design includes lashings (which are normally setup to have plenty of adjustment) then there is only the inconvenience of a tightening a few times initially if you didnt get rid of all the constructional stretch. Replacing Your Rigging | Cruising World To fix a mast like this, with multiple problems, you need to have a method to get to a satisfactory result. The checkstay, on the other hand, usually points where the foresail forestay attachment is located. As you size up creep and stretch will always be reduced. standing rigging size calculator Archives. The fittings and wire gradually reduce in size going up the mast as the loads decrease. However, in long race, especially single-handed, offshore, it has some human contraindications. Hi Dave, Thanks for your very thorough synopsis of using Dyneema for standing rigging. For example, low stretch is very important in a halyard but not necessarily in a sheet. Check your spreaders, chainplates and turnbuckles for cracking, fatigue, missing cotter pins/rings, etc. Unstep the mast and remove the rigging from the boat. Stainless steel isnot a malleable metal, so the pressure applied by the roller dies is exceptionally high, creating a solid bar of material. Finally, the role of the D2s in counteracting or favouring the bend between the first set of spreaders and the masthead. Re-rigs - Petersen Custom Rigging I found the Colligo information less helpful, it feels to me that they have stayed with the same materials despite the new developments. These are boats where you usually an average setting and not touch it before a specific event. 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. Rigging size | SailNet Community We always look forward to seeing you! Also Marlow describes them all and includes comparison charts. Rigging Doctor for SK99: 8mm Main 8mm Stainless: Colligo (SK75): 11mm Marlow from Jimmy Green (DM20): 15mm (but 13mm is pretty close) Rigging Doctor for SK99: 10mm The choices get more tricky as Liros don't make every size (no 7, 9 or 11mm). 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. If your rigging includes a shackle with a captive pin, the inside edge of the pin is the bearing point. RM30 is the force that is required to heel the boat over 30 degrees. We are ruling this one out for us. The de-multiplication of the runner pulleys obviously amplified the effect on the control line. Looking at the mast from the side you could see a beautiful shape without irregularities that gently curved back. T-terminals or shroud terminals often provide the most difficult decision.There are t-terminals on the market such as the Sta-lok and OS/BSI varieties which are sometimes referred to as universal.This means that they aredesigned to fit a variety of different backing plates, and they may well prove to be a useful resource if your existing terminals can't be replicated.However,it is bestto match the t-terminal to the mast backing plate from the same manufacturer.The thickness and width of the head,as well as the angle of the load bearing 'shoulders', are all critical factors in selecting the correct version. If they are both too tight the mast becomes straight like a telegraph pole losing its beautiful shape. Sailboat Standing Rigging | RiggingAndHardware.com So I'm interested in your opinions. Rigging Calculator on the App Store Unfortunately lots of the information isnt clear about which they are referring to in their guidance. This is especially important for the forestay attachment if it is an integral part of the stemhead fitting. Some say 52 diameters, other prefer 72 diameters. We also attached spinnaker halyards one to the left and one to starboard to an eyebolt. 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. For more information on rig inspections, visit our prior Ask the Rigger article at http://rigworks.com/the-scoop-on-rig-inspections/. From the Rigger: We are so glad you asked! Chainplates Revisited - Practical Sailor As we were stationary in port and without sails, I could totally ignore the D2s until the end. 1x19 Wire Rigging Stainless Steel 1x19 Wire Rope Rigging is the most popular solution for standing rigging on cruising yachts. How to Measure Standing Rigging With the mast and rigging still standing and set to its normal sailing positions, tape or mark all the threads of the studs where they exit the turnbuckles. Your email address will not be published. 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. Consider pulling your rig every 5-6 years to inspect the mast base, chainplates, turnbuckles, wire, etc. One of the most frequently asked questions we hear is: How do I measure my sailboat standing rigging? I.e. Before tightening the forestay, however, I wanted to loosen the the V1s a little so as not to induce further compression in the mast. a toggle fork at the bottom end. After this introduction, lets move on to a practical case. Our calculator is easy and simple to use. Excuse me the question, stays should be placed in a "free-standing mast"?. A boat with bad rigging is at best a pain in the #@$ and at worst a lethal weapon. We therefore started by loosening the V1s by two full turns, observing a reduction the bend. All in all it will probably only change your solent to staysail switch point by a knot of wind or two. I might have gone for 9mm if Liros offered that. Here are a few suggestions. The terminations for wire vs. rod can be quite different and require a lot of customization. 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.