{"product_id":"ronstan-series-75-double-orbit-block","title":"Ronstan Series 75 Double Orbit Block","description":"\u003cp\u003e\u003cstrong\u003eRonstan Series 75 Double Orbit Block\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eOrbit blocks are a no-compromise product range developed to meet the demands and expectations of the very dedicated and increasingly professional racing sailor. Side cheeks incorporating head structure and hub are precision machined as a single part from solid alloy, leaving material only where it contributes to the load carrying capacity of the block and eliminating the need for additional fasteners.\u003c\/p\u003e\n\u003cp\u003eThe Orbit sheave has captive acetal or Torlon ball bearings for side thrust loads, eliminating the need for side retainer plates. This reduces weight and allows for a wider bearing surface that can accommodate longer Torlon needles – achieving a substantially higher strength-to-weight ratio.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFeatures:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eThe highest strength-to-weight ratio.\u003c\/li\u003e\n\u003cli\u003eMinimal friction loss, especially when working at high loads.\u003c\/li\u003e\n\u003cli\u003eTotally reliable and trouble free performance.\u003c\/li\u003e\n\u003cli\u003eSimplicity of design and construction to facilitate maintenance and servicing.\u003c\/li\u003e\n\u003cli\u003eElegant, functional styling and finish. Lockable swivelling head post.\u003c\/li\u003e\n\u003cli\u003eHigh strength forged shackle.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eSpecification:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eMax. Rope diameter (in): 9\/16\u003c\/li\u003e\n\u003cli\u003eSheave diameter (in): 3\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eApplications:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003ePrimary mainsheet, halyard, and spinnaker systems on boats to 14m (46ft).\u003c\/li\u003e\n\u003cli\u003eSecondary mainsheet, vang blocks on boats to 15m (50ft).\u003c\/li\u003e\n\u003cli\u003ePermanent and running backstay systems on boats to 12m (40ft).\u003c\/li\u003e\n\u003cli\u003eGeneral control line and lead block applications on larger yachts.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eMaterials:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eFully machined Alloy cheek plates.\u003c\/li\u003e\n\u003cli\u003eAlloy sheaves with captive ball races. Torlon needle rollers.\u003c\/li\u003e\n\u003cli\u003eCarbon black Acetal ball bearings.\u003c\/li\u003e\n\u003cli\u003eForged grade 17-4PH stainless steel shackles.\u003c\/li\u003e\n\u003cli\u003eGrade 316 stainless steel head post.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Ronstan Sailboat Hardware","offers":[{"title":"Default Title","offer_id":53608497971572,"sku":"RONRF79200","price":809.3,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0934\/4004\/9524\/files\/RF79200.jpg?v=1779768569","url":"https:\/\/velasailingsupply.com\/products\/ronstan-series-75-double-orbit-block","provider":"Vela Sailing Supply","version":"1.0","type":"link"}