standing rigging size calculator

The choices get more tricky as Liros dont make every size (no 7, 9 or 11mm). 1. 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. From them we get either 7 or 9mm for the Mizzen and 11mm for the main. Swaged terminals are manufactured using 1 or more of the 4 processes listed above. As we go through the sizing calculations comparisons are difficult as they dont use the same version of Dyneema. It was clear, however, that we had moved the mast head forward several centimetres and the excess rake was gone. Standing rigging definition, rigging remaining permanently in position as a means of steadying various spars, shrouds, stays, etc. To fix a mast like this, with multiple problems, you need to have a method to get to a satisfactory result. That is, it is no longer one of the elements of the standing rigging (albeit adjustable). Continuous rigs require fewer terminal fittings which reduces costs and allows for easier inspection of terminals. I can do the reverse test and see if the opposite set causes bend to leeward. A DIY Solution to Tired Standing Rigging - Sail Magazine This turnbuckle features calibration, one extra-long stud and a fold-out arm to facilitate easy adjustments. 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). 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. Although we work closely with the boatyard during the job, you will need to negotiate yard fees (crane, mast lay days, etc.) This yields a shroud load of 6,000 pounds. 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. However we had to make some assumption and one was that each pair of shrouds would be the same length. RM30 is the force that is required to heel the boat over 30 degrees. We are ruling this one out for us. I.e., that the problems were only in the adjustments of the turnbuckles. [Update] or 9mm DynICE Dux for the Mizzen and 12mm for the Main. The reality is that Creep, even in SK75, can easily be designed around for standing rigging on a sailboat. 3000 # is not enough to get rid of constructional stretch, and you would need to sustain your load over time. 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. Then we choose what percentage of the breaking strength of the Dyneema we want this to be. The swept back spreaders ensure that the mast can stand up even without the backstay, which is no longer structural. We will talk here specifically about boats with swept back spreaders. Put one end of the tape on the pin at the terminal held in the turnbuckle on deck, then stretch out the tape until you reach the terminal holding the eye to the tang up the mast. Shaking the furled headsail gives an idea of the tension of the forestay. 2.5mm 1x19 Stainless Steel Wire Standing Rigging Custom Build 3mm 1x19 Stainless Steel Wire Standing Rigging Custom Build 4mm 1x19 Stainless Steel Wire Standing Rigging Custom Build 5mm 1x19 Stainless Steel Wire Standing Rigging Custom Build 6mm 1x19 Stainless Steel Wire Standing Rigging Custom Build 7mm 1x19 Stainless Steel Wire Standing Rigging Taking V1s and D1s and shaking them, hitting them, you get a feel for their. Stainless Steel 1x19 Wire Rope Rigging with KOS Wire - Jimmy Green Can you break it down for me? Like your car, your sailboat needs TLC. Differences emerged immediately, the D1 on the left was about 1cm shorter than the one on the right. We had no option but to intervene by shortening the forestay, which in this case was adjustable. 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. So these are the sites Ive found most useful in working sizes for our boat. Does anyone know if 5/32" is the factory size? Unlike the Gerr formula the RM30 formula accounts for shroud base width. Get the full sizing and inventory of: - the standing rigging - the running rigging - the mast section with weight and size - gravity center localization - and mast tuning report 4. The rake depends on the relationship between the length of the forestay and the shrouds as a whole. On a boat like yours with single uppers and double lowers, the uppers see about 45% of the load and . Each complete turn corresponded to approximately 3-4 millimetres in length. 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. The numbers in the Toss and Henderson calculations were for a 2.5 safety factor. If your running rigging leads back to the cockpit . So we measured the total length of the left and starboard turnbuckle system for both the vertical shrouds (V1) and the low diagonals (D1). If you put your hands on the standing rigging without following a sequence and without knowing what you are doing, you end up like a dog chasing its tail. If you need to replace a halyard, please dont pull it out of the mast. The picture below reveals the variation in thickness and head angle to the swage. Their role is not simply to contain the main when dowsing it. Imagine bearing away, removing the genoa and hoisting a large spi. Calculate the length of bury. From the Rigger According to industry standards, the anticipated lifespan for stainless steel rigging is 10-12 years for wire and 15-20 years for rod. Load Calculator - Stren-flex Measure your wireIt is important toestablish the diameter of your wire becauseall the different types of wire terminationare manufactured with specific dimensionsfor each diameter. 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. We are confident that you will look forward to our emails. Selecting Rope - Length, Diameter, Type - RIGWORKS INC. With the D2s completeley loose, the D1s were obviously too soft too. They are all full re-rigs from 119 wire with new rigging screws (please note all examples given are for supply only): On this Class40 the runner was attached to the first pulley and therefore its length was a given and could not be adjusted. This type of rig is fitted with a runner at the mast top and a checkstay at the height of the inner forestay. 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. The second is a calculation based on the current rigging size. be exactly level with the same number of turns on the upper and lower par. The rig of this boat is not particularly extreme or delicate, being the Class40s designed for great ocean navigation. Required fields are marked *. 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). Atticus Update 66: Calculating wire size for standing rigging How to Measure Standing Rigging - Sailing Services For a -inch turnbuckle and toggle, a minimum thickness of. Search by manufacturer's part # or brand. After this introduction, lets move on to a practical case. See other options in diagram to the right. So, with or without your old rope in hand, stop by and chat with our staff. This is not to say it was already set right, but we had zeroed the lateral tension errors. The Hamma Spoon and Petersen Shroud terminals are designed as direct replacements for the discontinued Navtec T-terminal. 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.). Simple. This was not the case before, with a perceptible difference of several degrees. The spreaders, in this case, are in line, perpendicular to the fore and aft axis of the boat. Most lines are pre-stretched. The line is also lighter and it doesn't absorb water, as compared to Vectran. If you cut heat stretched SK90 or 99, you will get 12 strands that fall apart. The checkstay, on the other hand, usually points where the foresail forestay attachment is located. Rigging Calculator on the App Store Braided line density is the key to eliminating constructional elongation over time. So we are looking at approx 9300kg breaking strain Dyneema. Then it made a bend to the right and then back to the left between the second set of spreaders to the masthead. Continuous rigging is more common on older and more traditionally rigged boats, while newer boats and performance-oriented sailboats often have discontinuous rigging. Replacing your turnbucklesCheck the thread size (standard or upsize)Select a turnbuckle which provides articulation e.g. While I would love to buy Marlow as a British company, they are a lot more expensive. Everything was in order throwing in a few tacks confirmed that the boat made sailed the same angle to the wind on both tacks. The picture below shows the most common rigging terminals used at Jimmy Green Marine.From left to right, Talurit Thimble Eye, Fixed Eye, Shackle Toggle, Stud, Stemball (Elephants foot), Toggle Fork, the toggle fork on the bottom of a rigging screw, Fixed Fork, Hamma Spoon, and Flat Head. Rigging Math | SailNet Community Choose the profiles, suppliers and materials from the database 3. SCT also includes various modules to perform calculations ISO 12215-6, 8 and 9. Replacing Your Standing Rigging - RIGWORKS INC. At the same time, by vertical compression of the mast, tensioning the backstay causes a bending of the mast that flattens the main. And PLEASE do not buy a used boat without a professional rig inspection! This is a very inexpensive investment (by yachting standards ) to ensure that your rig is in sound condition. The backstay is both an element of the standing rigging but can also be tuned. This on a mast with two sets of spreaders. 119 316 grade stainless steel Wire Rope (1 group of 19 wires, very stiff with low stretch) is standard on most sailboats. Keeping your existing turnbucklesCheck the thread type (UNF or Metric) the thread size (standard or upsize)and, just to make sure, the thread direction. 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. The mast of the Class40s are, pass me the term, quite ignorant, and dont it is not about fine tuning that last half turn. This is the figure I used in the formulas below. 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. So you cant simplify this by saying to keep the working load below a certain percentage of break strength. Maybe I was being a bit hyperbolic when i said that dude was 3x the amount of competitors. Heat stretched SK75 really performs better under a constant load. Then we can help you fine-tune your rope selection and length before cutting. We removed two more turns from the V1s and took them back at the forestay. Working the 10M rigging figures backwards can give the safety factor Pearson applied to the 10M. In the Toss method 25% load was used for each lower shroud to match his example. 1/4" is usually 7/16" or 1/2". If these are too soft the mast will sag to leeward between the first spreader and masthead. And if in doubt, too long is always better than too short! Check that everything is straight and true. This is to avoid the unpleasant situation of having a hard time getting to re-attach one. The Dyneema sizes can all be 10mm except the Liros D Pro Static [DFM20] which would need to go upto 12mm (no 11mm available). For safety and peace of mind, however, sailboat chainplates require attention and possibly upgrading. It is important to understand the influence of stay-V1 on the rake. It is your responsibility to assure that the slings you use are appropriate for your application. Its a popular model of Class40, a first generation Akilaria RC1, designed by Mark Lombard, from around 2006. These additions add up quickly and affect the cost of parts, labor, special order shipping, taxes, etc. 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. I need to ensure that the lashing length is enough for me to still tension the shroud at the end of its life. This is especially important for the forestay attachment if it is an integral part of the stemhead fitting. We had created a perfectly straight mast track, an adequate rake and a pre-bend. But I mean, why dont hey have prices listed on their site?! 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. As we were stationary in port and without sails, I could totally ignore the D2s until the end. Historically, the most traditional rig type is the masthead one. Having worked and checked with runners and checks the sea trial was more for the pleasure of ending the day with some sailing. Our running rigging calculator can instantly spec lines for more than 5,000 sailboats. Want to prolong the lifespan of your rigging? I will analyze your calculations carefully. I'm not sure that the distribution of the force on the sail, in force at the top and on the boom, is correct. Add that amount for each splice (it won't amount to even 36 feet in either case), plus the distance around the thimble. You can use the righting moment and rig geometry to calculate rig loads. 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. Threaded Bronze Inserts ensure superb adjustment without seizing or galling and the swivel toggle action allows full articulation in two planes. 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. If your standing rigging does not match our diagram, or has been modified, then the quoted price is not applicable to your boat. 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. Before adjusting them, however, we could use them to do a test on the adjustment so far of our mast. 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. This means that the threads are not screwed in equally. For a rod of the size we were adjusting we needed a large and very expensive tension measurement tool. 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 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. The tension gauges are especially designed for accurate, repeatable tuning of a sailboat's standing rigging. a toggle fork at the bottom end. I have a ketch with 1/4" SS on the main and 3/16" on the Mizzen. Maybe the 10M is not so over-rigged as it appears. Discussion in 'Software' started by TANSL, Feb 11, 2016. The amount of rake optimal rake is usually provided by the designer so you can do this job with absolute precision. This also serves as your pin center measuring point. The Pogo 2, designed around 2003-2004 is the Mini 650 with most boats built. That said, runners and checks play a very important role in stabilising the mast and reducing its stress. For example, assume a 2,000 pound load is to be supported by 2 legs of a sling. See more. Running Rigging Calculator All you do is select your boat model and our calculator instantly specs the size and lengths that will work for you. They replace the topping lift and support the boom. All you have to do is input the span of the beam, the magnitude of the point loads, and their distances from support A.

Michael Riedel Fiance Christina, Articles S