{"title":"Halyard Locks, Racks and Boom Fittings","description":"\u003cp\u003eSeldén halyard locks, hook racks, rig tension cars and boom fittings for dinghy masts. Covering both internal and external halyard systems on aluminium and carbon spars.\u003c\/p\u003e\n\u003ch2\u003eHow to choose\u003c\/h2\u003e\n\u003cp\u003eThe first question is whether your rig uses an internal or external halyard system. External halyard systems use a hook or rack at the mast to tension the halyard from outside the spar. Internal halyard systems route the halyard inside the mast and use a bullet-and-lock mechanism to hold the sail at full hoist. These are fundamentally different systems and the products in this collection are not interchangeable between them.\u003c\/p\u003e\n\u003cp\u003eFor external halyard systems, the choice is between the Simple Halyard Lock, the Halyard Hook Rack and the Rig Tension Car. The Simple Halyard Lock suits classes where a fixed hook at the masthead is the standard arrangement. The Halyard Hook Rack gives 80mm of adjustment across 8 positions, useful where precise rig tension needs to be set and repeatable. The Rig Tension Car is the most refined option, replacing the conventional hook and block with a ball-bearing sheave car that runs on the mast track and includes a becket for a 2:1 or 3:1 purchase system.\u003c\/p\u003e\n\u003cp\u003eFor internal halyard locks, you must specify aluminium or carbon spar. The two versions are not interchangeable. Retro-fitting either lock requires cutting a slot in the mast and accurate positioning — professional fitting is strongly recommended. For carbon spars, do not fit without first consulting Seldén.\u003c\/p\u003e\n\u003cp\u003eThe Black Band Track Clamp is relevant only to boats with Ultima section booms. It is compulsory under 420 class rules and advisable for any class where the black band measurement limit must be enforced on the boom.\u003c\/p\u003e\n\u003ch2\u003eWhat's in this collection\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003eSimple Halyard Lock\u003c\/strong\u003e (508-484) is a pressed stainless steel external halyard hook fitted at the masthead. It works with a 2–3mm wire halyard with a copper ferrule, or an HMPE halyard with a knot and nut. Commonly used on Europe, Finn and Splash spars.\u003c\/p\u003e\n\u003cp\u003eThe \u003cstrong\u003eDinghy Halyard Lock, complete with rivet\u003c\/strong\u003e is an internal halyard lock available in two versions: for aluminium spars (508-636-01) and for carbon spars (508-636-51). A bullet fitted to the main halyard engages the lock during hoisting. An additional pull allows the bullet to pass over the lock for lowering. Both versions are supplied with the rivet required for installation.\u003c\/p\u003e\n\u003cp\u003eThe \u003cstrong\u003eRig Tension Car\u003c\/strong\u003e (511-511-01) replaces the conventional hook and block on jib halyard tension systems. It incorporates a 25mm high-load stainless steel ball-bearing sheave and runs on a nylon slide pad against the spar surface, avoiding the wear that a conventional hook causes to the mast coating. The car is retained on the back of the mast when not in use. It engages in the track at the jib halyard exit slot below the gooseneck and includes a becket for rigging as a 2:1 or 3:1 purchase system.\u003c\/p\u003e\n\u003cp\u003eThe \u003cstrong\u003eHalyard Hook Rack\u003c\/strong\u003e (511-630) is a cast aluminium rack with 8 teeth providing 80mm of adjustment. It is used with 2–3mm wire or a spliced loop in an HMPE halyard.\u003c\/p\u003e\n\u003cp\u003eThe \u003cstrong\u003eCleat, 100mm\u003c\/strong\u003e (511-030) is a polyamide cleat installed with ø4.8mm pop-rivets, not included.\u003c\/p\u003e\n\u003cp\u003eThe \u003cstrong\u003eBlack Band Track Clamp\u003c\/strong\u003e (515-578-02) is a screw and clamp plate that mounts at the measurement band on Ultima section booms to prevent the sail from extending beyond the legal limit.\u003c\/p\u003e\n\u003ch2\u003eDinghy class applications\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003eSimple Halyard Lock\u003c\/strong\u003e is commonly used on \u003cstrong\u003eEurope\u003c\/strong\u003e, \u003cstrong\u003eFinn\u003c\/strong\u003e and \u003cstrong\u003eSplash\u003c\/strong\u003e class spars where an external halyard hook at the masthead is the standard arrangement.\u003c\/p\u003e\n\u003cp\u003eThe \u003cstrong\u003eBlack Band Track Clamp\u003c\/strong\u003e is compulsory under \u003cstrong\u003e420\u003c\/strong\u003e class rules and is made specifically for Ultima section booms. It is also advisable for any other class that uses an Ultima section boom and requires the boom black band limit to be enforced.\u003c\/p\u003e\n\u003cp\u003eThe internal halyard locks, rig tension car and halyard hook rack are used across a range of classes and are selected by spar type and halyard system rather than class directly.\u003c\/p\u003e","products":[{"product_id":"simple-halyard-lock","title":"Simple Halyard Lock","description":"\u003cp\u003eSimple halyard lock commonly used on Europe, Finn and Splash spars. Fitted at the mast head for an external halyard, the hook will work with a 2-3mm wire halyard with a copper ferrule, or an HMPE halyard with a knot and nut. Pressed stainless steel construction.\u003c\/p\u003e\u003cp\u003e\u003c\/p\u003e","brand":"Selden Dinghy Store","offers":[{"title":"Default Title","offer_id":52143102067026,"sku":"508-484","price":14.7,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0993\/1325\/4738\/files\/index_1fae4cae-3c34-4d05-a14e-3117d4aa8649.jpg?v=1764240736"},{"product_id":"dinghy-halyard-lock-complete-with-rivet","title":"Dinghy Halyard Lock complete with rivet","description":"\u003cp\u003eInternal halyard lock for dinghy main halyards on aluminium spars. A 'bullet' is fitted to the main halyard that engages in the lock while hoisting. An additional pull allows the bullet to pass over the lock to then lower the sail. Note, retro-fitting this lock requires cutting a slot in the mast and accurate positioning. Professional fitting should be considered.\u003c\/p\u003e\u003cp\u003e\u003c\/p\u003e","brand":"Selden Dinghy Store","offers":[{"title":"Default Title","offer_id":52143102493010,"sku":"508-636-01","price":81.12,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0993\/1325\/4738\/files\/index_d6857bda-5d49-4047-9e22-550bdb9dd6a4.jpg?v=1770623555"},{"product_id":"dinghy-halyard-lock-complete-with-rivet-1","title":"Dinghy Halyard Lock complete with rivet","description":"\u003cp\u003eInternal halyard lock for dinghy main halyards on carbon spars. A 'bullet' is fitted to the main halyard that engages in the lock while hoisting. An additional pull allows the bullet to pass over the lock to then lower the sail. Note, retro-fitting this lock requires cutting a slot in the mast and accurate positioning. Professional fitting should be considered. Do not fit before consulting Seldén!\u003c\/p\u003e\u003cp\u003e\u003c\/p\u003e","brand":"Selden Dinghy Store","offers":[{"title":"Default Title","offer_id":52143102525778,"sku":"508-636-51","price":81.12,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0993\/1325\/4738\/files\/index_6ba3480e-5959-4ba5-a57b-e833ff74b3c7.jpg?v=1770793281"},{"product_id":"cleat-100-mm-c-c-20-mm-polyamide-1","title":"Cleat, 100 mm, c-c 20 mm, Polyamide","description":"\u003cp\u003ePolyamide cleat. Use ø4,8 mm pop-rivets for installation (not included).\u003c\/p\u003e\u003cp\u003e\u003c\/p\u003e","brand":"Selden Dinghy Store","offers":[{"title":"Default Title","offer_id":52143107178834,"sku":"511-030","price":16.57,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0993\/1325\/4738\/files\/index_bf7092f6-8c19-4e59-b514-3ed19a53daa7.jpg?v=1764240892"},{"product_id":"rig-tension-car","title":"Rig Tension Car","description":"\u003cp\u003eThe Rig Tension Car replaces the usual block and hook found on many dinghy jib halyard tension systems, incorporating the halyard hook with a 25mm high load stainless ball-bearing sheave. The car is conveniently retained on the back of the mast instead of being lost in the bottom of the boat. It is engaged in the track at the jib halyard exit slot below the gooseneck. Friction is much reduced making it easier to pull on the rig tension. The car has a nylon slide pad than runs smoothly on the spar surface unlike the hook and block that gradually wears away the tubes protective coating. The car incorporates a becket so the first part of the tension system can be rigged as a 2:1 or 3:1.\u003c\/p\u003e\u003cp\u003eThe Rig Tension Car fits all Seldén aluminium dinghy sections except 2420. It also fits most other manufacturers sections including M2 and M7.\u003c\/p\u003e\u003cp\u003e\u003c\/p\u003e","brand":"Selden Dinghy Store","offers":[{"title":"Default Title","offer_id":52143108260178,"sku":"511-511-01","price":41.18,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0993\/1325\/4738\/files\/index_df194d84-f014-45d1-8273-2f35475675a2.jpg?v=1780062668"},{"product_id":"halyard-hook-rack","title":"Halyard Hook Rack","description":"\u003cp\u003eSimple cast aluminium halyard hook rack with 8 teeth to provide 80mm of adjustment. Use with 2-3mm wire or a spliced loop in an HMPE halyard to reduce weight.\u003c\/p\u003e\u003cp\u003e\u003c\/p\u003e","brand":"Selden Dinghy Store","offers":[{"title":"Default Title","offer_id":52143108292946,"sku":"511-630","price":28.62,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0993\/1325\/4738\/files\/index_cb8939d0-39c2-4745-bc55-2cbddecd320a.jpg?v=1770623538"},{"product_id":"black-band-track-clamp-ultima-boom-section","title":"Black Band Track Clamp, Ultima Boom Section.","description":"\u003cp\u003ePositioned at the measurment band, this screw and clamp plate will prevent the sail from extended beyond the legal limit. Compulsory under class rules in the 420 and advisable for all other classes. Specifically made for Ultima section booms.\u003c\/p\u003e\u003cp\u003e\u003c\/p\u003e","brand":"Selden Dinghy Store","offers":[{"title":"Default Title","offer_id":52569951797586,"sku":"515-578-02","price":30.58,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0993\/1325\/4738\/files\/index_6d2ece26-0ae6-4228-b94a-faf63b6d5072.jpg?v=1771418173"}],"url":"https:\/\/dinghy.seldenmast.com\/collections\/halyard-racks-locks.oembed","provider":"Seldén Dinghy Store","version":"1.0","type":"link"}