{"title":"Ronstan Orbit Strop, Webbing \u0026 Lashing Blocks — Instructions","description":"\u003clink rel=\"stylesheet\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0879\/4908\/2930\/files\/om-manual-v2.css\"\u003e\u003cstyle\u003e.mpom .om-tbl.nw td+td{white-space:nowrap}.mpom details.om-dd{position:relative;margin:0}.mpom details.om-dd\u003esummary{list-style:none;cursor:pointer}.mpom details.om-dd\u003esummary::-webkit-details-marker{display:none}.mpom .om-dd-menu{position:absolute;left:0;top:calc(100% + 6px);min-width:100%;width:max-content;max-width:360px;background:#fff;border:1px solid #e3e5e8;border-radius:6px;box-shadow:0 8px 24px rgba(0,0,0,.14);z-index:30;padding:6px}.mpom .om-dd-menu a{display:flex;justify-content:space-between;align-items:center;gap:14px;padding:10px 12px;border-radius:4px;font-size:14px;font-weight:600;color:#2a2b2a!important;text-decoration:none!important}.mpom .om-dd-menu a:hover{background:#f5f6f8}.mpom .om-dd-menu small{font-weight:400;color:#5f6368;white-space:nowrap}\u003c\/style\u003e\u003cdiv class=\"mpom\"\u003e\n\u003cdiv class=\"om-head\"\u003e\n\u003cdiv\u003e\n\u003cspan class=\"om-tag\"\u003eINSTRUCTIONS\u003c\/span\u003e\u003cp class=\"om-lead\"\u003eHow to attach Ronstan Orbit™ strop, webbing and lashing blocks: strop and guide line, the two webbing options, typical lashing layouts and when the central hole may be used as a becket.\u003c\/p\u003e\n\u003cdiv class=\"om-box\"\u003e\n\u003cdiv class=\"om-row\"\u003e\n\u003cspan\u003eDocument\u003c\/span\u003e\u003cb\u003eRonstan Orbit Strop, Webbing \u0026amp; Lashing Blocks Instructions\u003c\/b\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"om-row\"\u003e\n\u003cspan\u003eFormat\u003c\/span\u003e\u003cb\u003ePDF · 2 pages · 1.0 MB\u003c\/b\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"om-row\" style=\"border-bottom:0\"\u003e\n\u003cspan\u003eLanguage\u003c\/span\u003e\u003cb\u003eEnglish\u003c\/b\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"om-acts\"\u003e\n\u003ca class=\"om-btn dl\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0879\/4908\/2930\/files\/Ronstan-Orbit-Strop-Webbing-Lashing-Block-Instructions.pdf\" target=\"_blank\" rel=\"noopener\"\u003e\u003csvg viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2.4\" stroke-linecap=\"round\" stroke-linejoin=\"round\"\u003e\u003cpath d=\"M12 4v11\"\u003e\u003c\/path\u003e\u003cpath d=\"m7 10 5 5 5-5\"\u003e\u003c\/path\u003e\u003cpath d=\"M5 20h14\"\u003e\u003c\/path\u003e\u003c\/svg\u003e Download PDF\u003c\/a\u003e\u003ca class=\"om-btn buy\" href=\"\/collections\/ronstan-orbit-blocks\"\u003eView Collection\u003c\/a\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"om-toc\"\u003e\n\u003ca href=\"#om-strop\"\u003eStrop Block\u003c\/a\u003e\u003ca href=\"#om-webbing\"\u003eWebbing Block\u003c\/a\u003e\u003ca href=\"#om-lashing\"\u003eLashing Block\u003c\/a\u003e\u003ca href=\"#om-products\"\u003eProducts\u003c\/a\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"om-img\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0879\/4908\/2930\/files\/RONRF69109.jpg?v=1735835615\" alt=\"Ronstan Orbit Strop, Webbing \u0026amp; Lashing Blocks — Instructions\" loading=\"lazy\"\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"om-block\" id=\"om-strop\"\u003e\n\u003ch2 class=\"om-h\"\u003eOrbit™ Strop Block\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eSecure the block to a padeye, boom or other fixture with a load bearing fibre rope strop or lashing of appropriate strength, passing through the central hole in the block.\u003c\/li\u003e\n\u003cli\u003eFit a guide line through the small holes in the head of the block: it holds the main lashing in place and stops the block body rotating.\u003c\/li\u003e\n\u003cli\u003eThe strop or lashing must let the block align itself to the resultant force. Too short, and it may not allow enough articulation or alignment – this can damage the block or bearings.\u003c\/li\u003e\n\u003cli\u003eThe central hole of the strop block must \u003cstrong\u003enot\u003c\/strong\u003e be used as a becket or dead-end attachment point.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"om-block om-grid2\" id=\"om-webbing\"\u003e\n\u003cdiv\u003e\n\u003ch2 class=\"om-h\"\u003eOption 1 – Through the Alignment Slots\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eStep 1: the first pass of webbing goes through the centre hole and the alignment slots. It only keeps the block aligned with the load: secure it independently, with less tension than the following passes.\u003c\/li\u003e\n\u003cli\u003eStep 2: the second and following passes carry the main block load and do not pass through the alignment slots.\u003c\/li\u003e\n\u003cli\u003eAll passes of the webbing MUST go through the central hole.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003ch2 class=\"om-h\"\u003eOption 2 – Sailmaker's Seizing\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eAll passes go through the central hole only, not the alignment slots.\u003c\/li\u003e\n\u003cli\u003eKeep the block aligned with the load with a sailmaker's seizing right around the webbing strop and through the slots in the alignment guides.\u003c\/li\u003e\n\u003cli\u003eThe more common method: it lets the block sit as close as possible to its fixing point (deck padeye, etc.).\u003c\/li\u003e\n\u003cli\u003eAll passes of the webbing MUST go through the central hole.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"om-block\" id=\"om-lashing\"\u003e\n\u003ch2 class=\"om-h\"\u003eOrbit™ Lashing Block\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eSecure the block to a padeye, boom or other fixture with a load bearing fibre rope lashing of appropriate strength through the central hole, plus a guide line through the small holes in the head to hold the lashing and stop the block rotating.\u003c\/li\u003e\n\u003cli\u003eThe lashing must let the block align itself to the resultant force; too short can damage the block or bearings.\u003c\/li\u003e\n\u003cli\u003eTypical installations: lashing passes once through the hub; twice through the hub; or twice through the hub and spread.\u003c\/li\u003e\n\u003cli\u003eOn the lashing block the central hole can also take the becket dead-end of the sheet in a 3:1 purchase system.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cp class=\"om-note\"\u003eNeed a part that isn't listed? \u003ca href=\"\/pages\/contact\"\u003eAsk us to source it\u003c\/a\u003e and quote the part number from the PDF.\u003c\/p\u003e\n\u003ch2 class=\"om-h\" id=\"om-products\"\u003eProducts in this Manual\u003c\/h2\u003e\n\u003c\/div\u003e","products":[{"product_id":"ronrf69109","title":"Ronstan Series 60 Orbit Block, Strop block","description":"\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. The 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\u003cp\u003e Our Part # RONRF69109 | Mfr. Part # RF69109\u003c\/p\u003e","brand":"Ronstan","offers":[{"title":"Default Title","offer_id":49348794614066,"sku":"RONRF69109","price":354.13,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0879\/4908\/2930\/files\/RONRF69109.jpg?v=1735835615"},{"product_id":"ronrf79109","title":"Ronstan Series 75 Orbit Block, Strop block","description":"\u003cp\u003eOrbit blocks™ are a no-compromise product range developed to meet the demands and expectation 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. The Orbit sheave has captive Acetal 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\u003cb\u003eApplications\u003c\/b\u003e\u003cbr\u003e\n \u003c\/p\u003e\u003cul\u003e \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\u003eStandard 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\u003cb\u003eMaterials\u003c\/b\u003e\u003cbr\u003e\n \u003c\/p\u003e\u003cul\u003e \u003cli\u003eFully machined Alloy cheek plates\u003c\/li\u003e\n \u003cli\u003eAlloy sheaves with captive ball races\u003c\/li\u003e\n \u003cli\u003eTorlon® needle rollers\u003c\/li\u003e\n \u003cli\u003eCarbon black Acetal ball bearings \u003c\/li\u003e\n \u003c\/ul\u003e\u003cp\u003e Our Part # RONRF79109 | Mfr. Part # RF79109\u003c\/p\u003e","brand":"Ronstan","offers":[{"title":"Default Title","offer_id":49348895179058,"sku":"RONRF79109","price":436.06,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0879\/4908\/2930\/files\/RONRF79109.jpg?v=1735835628"},{"product_id":"ron-rf109109","title":"Ronstan Series 100 Orbit Strop Block","description":"\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. The 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\u003cp\u003e Our Part # RON-RF109109 | Mfr. Part # RF109109\u003c\/p\u003e","brand":"Ronstan","offers":[{"title":"Default Title","offer_id":49349002461490,"sku":"RON-RF109109","price":633.61,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0879\/4908\/2930\/files\/RON-RF109109.jpg?v=1728057214"},{"product_id":"ronrf79109a","title":"Ronstan Series 75 Lashing Orbit Block","description":"\u003cp\u003eOrbit blocks™ are a no-compromise product range developed to meet the demands and expectation 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. The Orbit sheave has captive Acetal 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\u003cp\u003e\u003cb\u003eApplications\u003c\/b\u003e\u003cbr\u003e\n \u003c\/p\u003e\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\u003eStandard 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\u003cb\u003eMaterials\u003c\/b\u003e\u003cbr\u003e\n \u003c\/p\u003e\u003cul\u003e\n \u003cli\u003eFully machined Alloy cheek plates\u003c\/li\u003e\n \u003cli\u003eAlloy sheaves with captive ball races\u003c\/li\u003e\n \u003cli\u003eTorlon® needle rollers\u003c\/li\u003e\n \u003cli\u003eCarbon black Acetal ball bearings\u003c\/li\u003e\n \u003c\/ul\u003e\u003cp\u003e Our Part # RONRF79109A | Mfr. Part # RF79109A\u003c\/p\u003e","brand":"Ronstan","offers":[{"title":"Default Title","offer_id":49349037785394,"sku":"RONRF79109A","price":809.3,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0879\/4908\/2930\/files\/RONRF79109A.jpg?v=1735835596"},{"product_id":"ronrf69109a","title":"Ronstan Series 60 Lashing Orbit Block","description":"\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. The 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\u003cp\u003e Our Part # RONRF69109A | Mfr. Part # RF69109A\u003c\/p\u003e","brand":"Ronstan","offers":[{"title":"Default Title","offer_id":49349042700594,"sku":"RONRF69109A","price":818.41,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0879\/4908\/2930\/files\/RONRF69109A.jpg?v=1735835603"},{"product_id":"ronrf109109a","title":"Ronstan Series 100 Lashing Orbit Block","description":"\u003cp\u003eOrbit blocks™ are a no-compromise product range developed to meet the demands and expectation 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. The 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\u003cb\u003eApplications\u003c\/b\u003e\u003cbr\u003e\n \u003c\/p\u003e\u003cul\u003e\n \u003cli\u003ePrimary mainsheet, halyard and spinnaker systems on boats to 16m (53ft)\u003c\/li\u003e\n \u003cli\u003eSecondary mainsheet, vang blocks on boats to 18m (60ft)\u003c\/li\u003e\n \u003cli\u003eBackstay systems on boats to 14m (46ft)\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\u003cb\u003eMaterials\u003c\/b\u003e\u003cbr\u003e\n \u003c\/p\u003e\u003cul\u003e\n \u003cli\u003eFully machined Alloy cheek plates\u003c\/li\u003e\n \u003cli\u003eAlloy sheaves with captive ball races\u003c\/li\u003e\n \u003cli\u003eTorlon® needle rollers\u003c\/li\u003e\n \u003cli\u003eCarbon black Acetal ball bearings\u003c\/li\u003e\n \u003cli\u003eTorlon® ball bearings - Series 100, 125 and 150\u003c\/li\u003e\n \u003c\/ul\u003e\u003cp\u003e Our Part # RONRF109109A | Mfr. Part # RF109109A\u003c\/p\u003e","brand":"Ronstan","offers":[{"title":"Default Title","offer_id":49349057446194,"sku":"RONRF109109A","price":1204.39,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0879\/4908\/2930\/files\/RONRF109109A.jpg?v=1735835682"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0879\/4908\/2930\/collections\/RONRF69109.jpg?v=1792712383","url":"https:\/\/www.mauripro.com\/collections\/owners-manuals-ronstan-orbit-strop-webbing-lashing-blocks.oembed","provider":"MAURIPRO Sailing","version":"1.0","type":"link"}