{"product_id":"ronstan-two-speed-mainsheet-system-top-blocks-only-ronrf72900t","title":"Ronstan Two-speed Mainsheet System Top Blocks Only RONRF72900T","description":"\u003c!--TABS SUP--\u003e\u003cdiv class=\"Techparagraph\"\u003e\n\u003cstrong\u003eManufacturer part #: \u003c\/strong\u003e RF72900T 1\u003cbr\u003e\u003cbr\u003e\n\u003cdiv class=\"container\"\u003e\n\u003cdiv class=\"cabDes\"\u003eTechnical Description\u003c\/div\u003e\n\u003cdiv class=\"col-4 menu units\"\u003eFeatures\u003c\/div\u003e\n\u003cdiv class=\"col-4 menu units\"\u003eAmerican\u003c\/div\u003e\n\u003cdiv class=\"col-4 menu units\"\u003eMetric\u003c\/div\u003e\n\u003cdiv class=\"col-4 col-12M menu\"\u003eDescription\u003c\/div\u003e\n\u003cdiv class=\"cell col-8 col-12M\"\u003e Two-Speed Mainsheet System Top Blocks Only\u003c\/div\u003e\n\u003cdiv class=\"col-4 col-12M menu\"\u003eSheave Ø\u003c\/div\u003e\n\u003cdiv class=\"cell col-4 col-6M\"\u003e3 in + 2 in\u003c\/div\u003e\n\u003cdiv class=\"cell col-4 col-6M\"\u003e75 mm + 50 mm\u003c\/div\u003e\n\u003cdiv class=\"col-4 col-12M menu\"\u003eMaximum Rope Ø\u003c\/div\u003e\n\u003cdiv class=\"cell col-4 col-6M\"\u003e3\/8 in\u003c\/div\u003e\n\u003cdiv class=\"cell col-4 col-6M\"\u003e10 mm\u003c\/div\u003e\n\u003cdiv class=\"col-4 col-12M menu\"\u003eMaximum Working Load\u003c\/div\u003e\n\u003cdiv class=\"cell col-4 col-6M\"\u003e2430 lb\u003c\/div\u003e\n\u003cdiv class=\"cell col-4 col-6M\"\u003e1100 kg\u003c\/div\u003e\n\u003cdiv class=\"col-4 col-12M menu\"\u003eBreaking Load\u003c\/div\u003e\n\u003cdiv class=\"cell col-4 col-6M\"\u003e5070 lb\u003c\/div\u003e\n\u003cdiv class=\"cell col-4 col-6M\"\u003e2300 kg\u003c\/div\u003e\n\u003cdiv class=\"col-4 col-12M menu\"\u003eWeight\u003c\/div\u003e\n\u003cdiv class=\"cell col-4 col-6M\"\u003e20.3 oz\u003c\/div\u003e\n\u003cdiv class=\"cell col-4 col-6M\"\u003e575 g\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c!--TABS --\u003e\u003cdiv class=\"Techparagraph\"\u003e\n\u003cstrong\u003eManufacturer part #: \u003c\/strong\u003e RF72900T\u003cbr\u003e\u003cbr\u003e\u003cli\u003eCoarse and and fine tuning purchase system\u003c\/li\u003e\n\u003cli\u003eUnrivalled 18:1 holding power\u003c\/li\u003e\n\u003cli\u003eDual sided On-Off switch\u003c\/li\u003e\n\u003cli\u003eLow friction ball bearing system\u003c\/li\u003e\n\u003cli\u003eLightweight\u003c\/li\u003e\n\u003cli\u003eCheek cut-outs for easy bearing maintenance\u003c\/li\u003e Two-speed mainsheet systems allow both coarse and fine tuning in a single purchase system. The system allows fine tuning of the mainsheet when sailing upwind by using one of the sheet tails and keeping the other cleated. Using both the sheets at once allows the trimmer to blow off the main quickly when rounding the top mark and trim on quickly when hardening up after rounding the bottom mark. \u003cbr\u003e\u003cbr\u003e When fitting to traveller cars, ensure adequate support for the bottom block and use stand-up spring kit RF324-1 or RF324-2. \u003cbr\u003e\u003cbr\u003e\u003cspan class=\"subtitles_red\"\u003eApplications\u003c\/span\u003e\u003cbr\u003e\u003cli\u003eMainsheets on sportsboats and keel boats to 12 m (40 ft)\u003c\/li\u003e\n\u003cli\u003eMainsheets on sportsboats and keelboats to 12 m (40')\u003c\/li\u003e\n\u003cli\u003eMax. mainsail area, END boom sheeting = 38sq m (409 sq ft)\u003c\/li\u003e\n\u003cli\u003eMax. mainsail area, MID boom sheeting = 23sq m (248 sq ft)\u003c\/li\u003e\n\u003cspan class=\"subtitles_red\"\u003eMaterials\u003c\/span\u003e\u003cbr\u003e\u003cli\u003eCarbon Black Acetal ball bearings\u003c\/li\u003e\n\u003cli\u003eU.V. stabilised Acetal sheaves, alloy Bottom Blocks Only sheaves\u003c\/li\u003e\n\u003cli\u003eAlloy cheeks\u003c\/li\u003e\n\u003cli\u003eTorlon° Bottom Blocks Only pawl\u003c\/li\u003e\n\u003cli\u003eAdjustable cleat arms\u003c\/li\u003e\n\u003c\/div\u003e\n\u003c!-- FIN SCRIP PANLS--\u003e\n\u003c\/div\u003e","brand":"Ronstan Sailboat Hardware","offers":[{"title":"Default Title","offer_id":53594572456308,"sku":"RONRF72900T","price":645.4,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0934\/4004\/9524\/files\/RONRF72900T-2__47831.jpg.1428984928.jpg?v=1761730678","url":"https:\/\/velasailingsupply.com\/products\/ronstan-two-speed-mainsheet-system-top-blocks-only-ronrf72900t","provider":"Vela Sailing Supply","version":"1.0","type":"link"}