I hear about these guys on every forum everywhere. The Hamma Spoon and Petersen Shroud terminals are designed as direct replacements for the discontinued Navtec T-terminal. We use the highest quality standing rigging components available, and we won . Working the 10M rigging figures backwards can give the safety factor Pearson applied to the 10M. Threaded Bronze Inserts ensure superb adjustment without seizing or galling and the swivel toggle action allows full articulation in two planes. As posted above it seems like synthetic standing rigging is still the wild west. Add that amount for each splice (it won't amount to even 36 feet in either case), plus the distance around the thimble. 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. 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. You may need to apply pressure to stretch the wire straight, you may find it helpful to use a line or block and tackle. In fact, I had sailed on an identical boat for a total of about 60,000 miles. For more information on rig inspections, visit our prior Ask the Rigger article at http://rigworks.com/the-scoop-on-rig-inspections/. One seemingly easy option is to over-size. Most lines are pre-stretched. Question: Do you have guidelines for selecting halyards, sheets, etc. Braided line density is the key to eliminating constructional elongation over time. Remove any pins from your terminal ends before taking measurements. We gave the forestay one more turn and removed a turn from the V1s and we were satisfied. And both say having lowers at least the same size as uppers is a good idea. For 8mm stainless steel the breaking strength is 4640kg. 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. Here are a few suggestions. 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. 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. All the vertical tension turned into compression and bend. This system with T-bone on the checkstay give you maximum flexibility and is obviously suitable for those who know how to use it. With the boat in the water and not wanting to take any risk, we didnt want to get to unhook any turnbuckle. The terminations for wire vs. rod can be quite different and require a lot of customization. For 6.5mm stainless steel the breaking strength is 3220kg. 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. I was satisfied with the shape and only the sea trials could have confirmed the correct setting of the D2. 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. Creep will mean your rig needs re-tensioning over time. On some boats a loop with T-bone is is used to shorten the checkstay lashing by a few centimetres. 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. This will be true for all three of your reef points. This on a mast with two sets of spreaders. However, DynICE Dux is now back in the running, and with the possibility of 9mm for the Mizzen for about the same price as the 8mm Liros D-Pro-XTR. 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). We have had many customers who have found a great deal on a used boat only to discover that they need to spend a small fortune on new rigging. 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. Question: My halyard is binding. Jordan freshens up on his high school math to calculate what wire size we should order for our new standing rigging. Whats up? The tension gauges are especially designed for accurate, repeatable tuning of a sailboat's standing rigging. I will analyze your calculations carefully. For example, low stretch is very important in a halyard but not necessarily in a sheet. Please read the instructions completely before you start measuring your rig. We have chosen a Class40, a sister-ship of the boat with which I competed in the Global Ocean Race 2011/2012. 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. 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. 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. Everything was in order throwing in a few tacks confirmed that the boat made sailed the same angle to the wind on both tacks. This is why Marlow recommends DM20 for standing rigging, even though the elastic stretch in DM20 is so much more. There isnt even a topping lift to support the boom when reefing. We took then tightened the forestay by the same two full turns on the turnbuckle. The flogging of a loose shroud can actually be harder on wire than steady pressure. Those details about the differences of heat stretching at Fibre vs braided level are hard to come by. Although we work closely with the boatyard during the job, you will need to negotiate yard fees (crane, mast lay days, etc.) says the wire was 1/4". If they are not willing to take the financial risk, are you willing to risk yourself and your crew? Before tightening the forestay, however, I wanted to loosen the the V1s a little so as not to induce further compression in the mast. Having worked and checked with runners and checks the sea trial was more for the pleasure of ending the day with some sailing. It is your responsibility to assure that the slings you use are appropriate for your application. Make sure your turnbuckle is centered between the studs for accurate measurement. The standard seems to be 2.5 to 3.0. Things to look for include corrosion, pitting, cracks, and broken strands or meat hooks on the wire. Those methods give a guide to sizing the wire for the 10M. At this point many of our customers choose to ship their rigging to our shop in Miami Florida where we will duplicate it exactly. Make sure your turnbuckle is centered between the studs for accurate measurement. 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. Both operations improve upwind performance. I.e the mast will go backwards to the first level of spreaders then stard bending forward from there to the masthead. Global Solo Challenge Copyright 2022. RIGGINGS AND MASTS CALCULATIONS ONLINE RIGGINGS AND MASTS FREE DATABASE: Just in 10 minutes! Dont trust us for the sizing of your own rig! This T-bone, if forgotten closed, supports the mast only at the level of spreaders, leaving the masthead free. Then we can help you fine-tune your rope selection and length before cutting. Contrary to popular thought, a slack rig is more punishing on a hull than a properly adjusted, tight rig. Decide which you want (no doubt Colligo has a guide for bury amounts of their DUX). All you have to do is input the span of the beam, the magnitude of the point loads, and their distances from support A. Standing rigging definition, rigging remaining permanently in position as a means of steadying various spars, shrouds, stays, etc. A high-performance racer might require a lighter, stronger, lower stretch (i.e. The choices get more tricky as Liros dont make every size (no 7, 9 or 11mm). If you are replacing your turnbuckles, make sure the existing turnbuckles are adjusted to their normal set position for sailing before taking your measurements. From the Rigger: Most boat owners do not climb their masts regularly, but our riggers spend a lot of time up there. 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. 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. Diameter and performance are determined by your boat length, the function of the rope, and the style of sailing that you do. I might have gone for 9mm if Liros offered that. The cost to replace standing rigging obviously varies from boat to boat. If they are both too tight the mast becomes straight like a telegraph pole losing its beautiful shape. 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. On boats with swept back spreaders, runners and checkstays are not structural. On DayBoats, Trailer Sailers and small yachts, a standard 1x19 wire can be bent around a stainless-steel thimble and Talurit pressed into position using a copper ferrule. The spreaders are not perpendicular to the fore-aft axis but swept towards the stern on the horizontal plane. In particular, the curvature between the first set of spreaders and the masthead increased. NE ropes has STS-HSR. This development has become more and more marked with boats with very wide spreaders and without backstay. Raise then the equations of equilibrium will be more easy task. That is with the forestay and backstay attached to the masthead as fixed standing rigging that create traction in the opposite direction. Forum posts represent the experience, opinion, and view of individual users. And if in doubt, too long is always better than too short! Usually they are made with dyneema and not just simple polyester. Discontinuous rigging is made up of shorter sections of wire that connect to each other at the spreader tips. All in all it will probably only change your solent to staysail switch point by a knot of wind or two. The Lift-All Sling/Leg Length Calculator has been designed to assist you in selecting the appropriate size slings for your lifting applications. It was time to move on runners and checkstays to decide if something needed changing. To do this we tighten the runner with the checkstay lashing very short to start with. 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. Unlike the Gerr formula the RM30 formula accounts for shroud base width. For decades now, however, fractional rigs with swept back spreaders have been increasingly widespread. 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). 1/2beam is half of the shroud base width 10M OEM Rigging Wire Headstay Backstay Upper Shroud Lower Shroud Size 3/8" 3/8" 5/16" 9/32" So is the rigging over-sized on the 10M? The Gerr method seems to go a bit smaller but all of them are smaller than the OEM rigging on the 10M. The wire is inserted into the hollow terminal and pulled through a set of roller dies. They are adjustable both to raise the boom in port and to put them at rest during navigation. Your email address will not be published. However, between the sites we have found at least four ways of deciding what size is needed. A sailboat's standing rigging is generally built from wire rope, rod, or occasionally a super-strong synthetic fibered rope such as Dyneema , carbon fiber, kevlar or PBO. The line is also lighter and it doesn't absorb water, as compared to Vectran. [Update] or 9mm DynICE Dux for the Mizzen and 12mm for the Main. Get regular rig inspections! So we measured the total length of the left and starboard turnbuckle system for both the vertical shrouds (V1) and the low diagonals (D1). You can use a large nail or screw on the dock. Be aware that this is not a simple conversion and can be quite expensive. Excuse me the question, stays should be placed in a "free-standing mast"?. It does seem like some competition is popping up here and there for dux. The port V1 was 2cm shorter than the starboard V1. But, the overall curve of the three sections of the mast was not yet regular. Despite the absence of a backstay its not runners or checkstays that keep the mast up. From Marlow Ropes we have this: Others refer to Elastic Stretch, Constructional Stretch and Creep. Website created by. In addition, runners reach the masthead. If your running rigging leads back to the cockpit .
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