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. Despite the absence of a backstay its not runners or checkstays that keep the mast up. The list of materials and design stresses are those that ISO 12215-5 standard says that can be used. 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. We always look forward to seeing you! Search by manufacturer's part # or brand. Perform routine cleaning/polishing to remove corrosives, identify chafe points and other damage, and properly tune your standing rigging (shrouds, forestay, backstay). It is your responsibility to assure that the slings you use are appropriate for your application. Before adjusting them, however, we could use them to do a test on the adjustment so far of our mast. rope), you will want to consider length, diameter, stretch/performance, material/construction and, of course, price. Rigging size | SailNet Community The Pogo 2, designed around 2003-2004 is the Mini 650 with most boats built. [Update] or 9mm DynICE Dux for the Mizzen and 12mm for the Main. For safety and peace of mind, however, sailboat chainplates require attention and possibly upgrading. See other options in diagram to the right. A rig inspection beforehand can minimize surprises. 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. Find a flat surface large enough that you can fully stretch your rigging out for measurement. If your running rigging leads back to the cockpit . 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. Things to look for include corrosion, pitting, cracks, and broken strands or meat hooks on the wire. This system with T-bone on the checkstay give you maximum flexibility and is obviously suitable for those who know how to use it. We've reduced the choices to a minimum to make ordering as simple as possible. Wire rope is sized/priced by its diameter which . Since it was not me who had mounted the mast, I could not be sure that the turnbuckles had been inserted correctly, i.e. The best bet is to shop with your old rope in hand. 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. In our search we have found three sites particularly helpful. It is indeed a complicated process in using a braided line for standing rigging. 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. Others, such as Mr. E.Sponberg, make other distribution of forces. Their sizing post is Sizing for Creep. When I arrived on this boat to check the mast, there were two problems noticeable with the naked eye. lol. For more information on rig inspections, visit our prior Ask the Rigger article at http://rigworks.com/the-scoop-on-rig-inspections/. The goal is to give the mast a beautiful shape that does not have strange kinks in its curvature and especially any inversions etc. 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. Factors you must consider include: Type of hitch/method of rigging. For 6.5mm stainless steel the breaking strength is 3220kg. That is with the forestay and backstay attached to the masthead as fixed standing rigging that create traction in the opposite direction. This is mostly a problem if you only use turnbuckles due to their limited range. 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. This is especially important for the forestay attachment if it is an integral part of the stemhead fitting. Thus your list is not suitable and not providing the correct strength for design allowable limits of mast alloy grades. 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. First of all, the mast was not straight, it pulled to the left until the first set of spreaders. The choices get more tricky as Liros dont make every size (no 7, 9 or 11mm). So we measured the total length of the left and starboard turnbuckle system for both the vertical shrouds (V1) and the low diagonals (D1). Is it maybe, just maybe possible that they have cornered the market on synthetic standing, Colligo, Colligo, Colligo. Please read the instructions completely before you start measuring your rig. The current shrouds are 5/32" diameter. So in all fairness, I was trusting my eyes. As said, the backstay is simply not there, to make room for the square top mainsail. When measuring rigging, the convention is to measure from pin center to pin center or from bearing point to bearing point. The most popular choice is the Stalok version (top) which utilises a chrome-plated, forged bronze body. Some say 52 diameters, other prefer 72 diameters. With the boat in the water and not wanting to take any risk, we didnt want to get to unhook any turnbuckle. We gave the forestay one more turn and removed a turn from the V1s and we were satisfied. Consider pulling your rig every 5-6 years to inspect the mast base, chainplates, turnbuckles, wire, etc. Pearson 10M Standing Rigging Calculation - dan.pfeiffer.net The curvature was accentuated between the first spreaders and the masthead so I went up to the D2s to give a first rough and symmetrical adjustment. Please call us at 1.888.535.7326 if you need a quote for standing rigging not listed on our site. On this Class40 the runner was attached to the first pulley and therefore its length was a given and could not be adjusted. The problem is solved with the introduction of structural lazy jacks. 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. (contrasted with running rigging). It was time to move on runners and checkstays to decide if something needed changing. Lets go up whenever there doubt. Each complete turn corresponded to approximately 3-4 millimetres in length. Your email address will not be published. When planning Dyneema rigging the area we have found most confusing is deciding on the size of Dyneema we should fit. Taking V1s and D1s and shaking them, hitting them, you get a feel for their. By measuring the total length of the turnbuckles and exposed thread, many things could be deduced. 5 languages options can be chosen: English, Spanish, French, German and Portuguese. These additions add up quickly and affect the cost of parts, labor, special order shipping, taxes, etc. For a C&C 115, making the mast out of carbon and going with somthing other than SS wire, save IIRC from a magazine article. Unlike the Gerr formula the RM30 formula accounts for shroud base width. It was clear, however, that we had moved the mast head forward several centimetres and the excess rake was gone. Tensioning the backstay, the central part of the mast advances forward creating a slight C shape of the mast seen from the side. Write down the number and move on to the next stay. 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 . 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. a toggle fork at the bottom end. To do this we tighten the runner with the checkstay lashing very short to start with. These are boats where you usually an average setting and not touch it before a specific event. I need to ensure that the lashing length is enough for me to still tension the shroud at the end of its life. 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 distance between the hole and the top of the fitting - check that the new fork fitting has enough depth to accommodate the chain plate without obstruction. Stretchy is slightly problematic because there are multiple forms and the terminology used isnt consistent. Chainplates 101: Inspect and Refit | Cruising World Once swaged, the terminal cannot be re-used or positionally adjusted. So we are looking at approx 9300kg breaking strain Dyneema. Sort by: We forego some fine tuning for safety offshore. Our preferred rope supplier, Jimmy Green Marine, has lots of information and a range of Dyneema for standing rigging from different suppliers. Do it yourself Standing Rigging Quotes - Jimmy Green All the vertical tension turned into compression and bend. Website created by Primeconsulting. 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. - MyR: software for the calculation of masts and rigging. The boat was in the water, we first had to avoid the risk of unscrewing a turnbuckle and accidentally unhooking a shroud. I need to do some more study and number crunching. Rigging Calculator on the App Store Dynice Dux or SK75 - RIGWORKS INC. Standing Rigging - Cable Loft Swaged terminals are manufactured using 1 or more of the 4 processes listed above. Is it maybe, just maybe possible that they have cornered the market on synthetic standing rigging through a, Location: Bas Caraquet, New Brunswick, Canada. 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 see DSM is coming out with DM20 which is a heat treated pre stretched fiber. Adjusting the rigging of a sailboat is less complicated than you imagine. Want to prolong the lifespan of your rigging? Take your measurements from pin center to pin center as seen in the diagram. Discussion in 'Software' started by TANSL, Feb 11, 2016. I wish the rope companies made the creep properties easier to find. You can use a large nail or screw on the dock. So the rake is controlled by adjusting the stay length and the V1s. 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. Reefing Line (reef 2) - Boom length x 3. 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. If your standing rigging does not match our diagram, or has been modified, then the quoted price is not applicable to your boat. This allows us to run high and increase mast bend with a full mainsail. We are confident that you will look forward to our emails. However we had to make some assumption and one was that each pair of shrouds would be the same length. Stretch the wire straight and ensure there are no bends in the wire. standing rigging. From the Rigger: First, if your old rope served its purpose but needs replacing, we recommend duplicating it as closely as possible Read more, http://rigworks.com/maintaining-your-standing-rigging/, http://rigworks.com/wp-content/uploads/2016/03/Standing-Rigging-Care.pdf, http://rigworks.com/the-scoop-on-rig-inspections/. 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. It is important to use a tape measure under tension and that does not stretch. We use the highest quality standing rigging components available, and we won . Maybe I was being a bit hyperbolic when i said that dude was 3x the amount of competitors. Type in the parameters 2. That is because a Dyneema line the same strength as the Stainless Steel it replaces would be too stretchy to work. When the T-bone is undone, the runnner has more relative tension than the checkstay as by undoing the T-bone we have effectively lengthened the checkstay. Z-Spars, Isomat.Opposite UNF thread is very rare and will entail changing the whole turnbuckle to avoid a bespoke solution. The de-multiplication of the runner pulleys obviously amplified the effect on the control line. It is your responsibility to assure that the slings you use are appropriate for your application. So you cant simplify this by saying to keep the working load below a certain percentage of break strength. The boom will rise again when we tension the reef line and this rarely even needs the boom to be helped by hand. For example, many chainplates are too thin to grip clevis pins correctly. 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 mast of the Class40s are, pass me the term, quite ignorant, and dont it is not about fine tuning that last half turn. 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. Condition of sling - passes all inspection criteria. With a masthead rigged boat, the backstay can be used to increase forestay tension in high winds. Rust and discoloration can indicate the location of a crack or crystallization of the metal. If your rigging terminal contains a pin remove the pin and use this as your attachment point. If they are both too tight the mast becomes straight like a telegraph pole losing its beautiful shape. In addition to this it was clear that when the starboard runners and checkstay were tensioned, the mast deteriorated in shape. We had no option but to intervene by shortening the forestay, which in this case was adjustable. I have a ketch with 1/4" SS on the main and 3/16" on the Mizzen. The experience was refreshing to learn with a degree of mathematical certainty what would be a safe decision rather than relying on the often contradictory opinions that we regularly face. I have to study the correct way to approach this problem. standing rigging size calculator - jusben.com So, with or without your old rope in hand, stop by and chat with our staff. Lift-All Sling Length Calculator Agreement | Lift-All Select your wire construction KOS 1x19 - this is the standard wire for standing rigging on Cruising Yachts Petersen Compact Strand - for higher strength performance KOS flexible 7x19 - for applications where the wire will be required to turn around sheaves. Our running rigging calculator can instantly spec lines for more than 5,000 sailboats. And yet I have read that once stretched to its working load, regular Dyneema will stabilize and then experience even less creep than DUX. In fact, I had sailed on an identical boat for a total of about 60,000 miles. Whats up? One seemingly easy option is to over-size. If your rigging includes a shackle with a captive pin, the inside edge of the pin is the bearing point. document.getElementById( "ak_js_1" ).setAttribute( "value", ( new Date() ).getTime() ); This site uses Akismet to reduce spam. directly with the yard of your choice. standing rigging size calculator Archives. 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. They are all full re-rigs from 119 wire with new rigging screws (please note all examples given are for supply only): Your email address will not be published. This especially with loose D2s that do not prevent the section above from bending forward. So we had left-right and fore-aft problems. 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. Many of our do-it-yourself customers with continuous rigs order their rigging with a swaged terminal at the top of the mast and a Sta-Lok or Hi-Mod mechanical fitting for the bottom so they can fit the rigging on site. With the D2s completeley loose, the D1s were obviously too soft too. says the wire was 1/4". NE ropes has STS-HSR. Add that amount for each splice (it won't amount to even 36 feet in either case), plus the distance around the thimble. But have you ever seen a boat so rigged? Know the sizes and lengths you need? Tuning is required at each spreader level due to the wire terminating at each spreader tip. So the sites we have used are below and for each I have sized replacements for our Mizzen mast (currently 6mm or 6.5mm Stainless Steel cant be sure until we can visit) and our Main mast (currently 8mm we think). Most lines are pre-stretched. If you would like to measure your rigging yourself proceed to step 5. It does seem like some competition is popping up here and there for dux. All rights reserved. When buying new running rigging (i.e. Give us a call, and we can give you a rough quote. If in doubt, get a professional opinion. If you have any questions, please dont hesitate to call or email us and we would be happy to help you. Replacing your turnbuckles. Replacing your turnbucklesCheck the thread size (standard or upsize)Select a turnbuckle which provides articulation e.g. Thanks John. On a Mini 650, to avoid too many lines, and with a boom that weighs a few kilos, nothing replaces the topping lift. 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. Then we can help you fine-tune your rope selection and length before cutting. 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. 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.). Unfortunately lots of the information isnt clear about which they are referring to in their guidance. Differences emerged immediately, the D1 on the left was about 1cm shorter than the one on the right. 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. Threaded Bronze Inserts ensure superb adjustment without seizing or galling and the swivel toggle action allows full articulation in two planes. The Lift-All Sling/Leg Length Calculator has been designed to assist you in selecting the appropriate size slings for your lifting applications. In terms of suitability for us, we have got that down to this list of basic Dyneema variations (we havent found a comparison between the different ways of treating the same type of Dyneema): Rigging Doctor describes all these (and others that we are not considering), not much has changed since that was written in 2015 apart from the gradual introduction of Bio-based Dyneema (expected to reach 60% of all Dyneema by 2030) and a reduction in the premium pricing for DM20 and SK99. Calculating Dyneema for Standing Rigging - Cruisers Forum Therefore, except in exceptional cases, starting from this assumption is more than reasonable. 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 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. 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. 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). 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. Reefing Line (reef 1) - Boom length x 2.5. 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. Then we choose what percentage of the breaking strength of the Dyneema we want this to be. For example, when setting the runners, it was noticeable that the working points of the control lines had moved by about 20cm. 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. Can Galvanised Steel be used with Stainless Steel? 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/. there is no M11 size. With this procedure we were able to restore a situation where the two V1s shrouds were the same length and with the same adjustment. How to set up your rig: tension your shrouds on masthead or - PBO 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. He asked Isnt the industry standard just a ploy by manufacturers to sell more wire. 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. So we can put back the T-bone that shortens checkstay and use it as a counter cable for the inner forestay. If you can get the cap, Colligo, Colligo, Colligo. This translates into a less dense braided product that produces more constructional elongation when put under a constant load, like pretension in your rig. Sounds interesting regardless. Both are based on the this formula: RM30 is the righting moment at 30 degrees heel They are not included in our estimate. Discontinuous rigging is made up of shorter sections of wire that connect to each other at the spreader tips. At this point many of our customers choose to ship their rigging to our shop in Miami Florida where we will duplicate it exactly. See more. The distance between the halyard and the mast at the boom is your rake.