Ronstan Series 75 Ratchet and Ball Bearing Block w/ 4:1 Coarse & 8:1 Fine

Ronstan Series 75 Ratchet and Ball Bearing Block w/ 4:1 Coarse & 8:1 Fine
Item# RF72900
Regular Price: $1,172.00
Sale Price: $996.20

Product Description

Ronstan Series 75 Ratchet and Ball Bearing Block w/ 4:1 Coarse & 8:1 Fine

  • Rope Not Included

    Features

  • Coarse and and fine tuning purchase system

  • Unrivaled 18:1 holding power

  • Dual sided On-Off switch

  • Low friction ball bearing system

  • Lightweight

  • Cheek cut-outs for easy bearing maintenance

  • Sheave Ų - 3 + 2 in.

  • Max. Rope Ų - 3/8 in.

  • Max. Cable Ų - in

  • Pin Ų - in.

  • M.W.L. - 2430 lb.

  • B. L. - 5070 lb.

  • Weight - 53.8 oz.

    Product Information

    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. When fitting to traveler cars, ensure adequate support for the bottom block and use stand-up spring kit RF324-1 or RF324-2. (Refer to traveler section for more information).

    Applications

  • Mainsheets on sportsboats and keel boats to 12m (40ft)

  • Mainsheets on sportsboats and keelboats to 12m (40')

  • Max. mainsail area, END boom sheeting = 42sq m (452 sq ft)

  • Max. mainsail area, MID boom sheeting = 27sq m (290 sq ft)

    Materials

  • Carbon Black Acetal ball bearings

  • U.V. stabilized Acetal sheaves, alloy ratchet sheaves

  • Alloy cheeks

  • Torlon® ratchet pawl

  • Adjustable cleat arms