MarineSupplyStore.com » Hardware & Maintenance » Deck Hardware » Split Backstay Adjuster Split Backstay Adjuster, 3/16 inch Max. Wire Dia., 4 Delrin Sheaves

This adjusting car replaces separate blocks and a connecting member. Tandem sheaves eliminate severe flexing of the backstay, providing a neat, thoroughly functional fitting. The 38 Series with Delrin sheaves is intended for boats under 30ft., while the husky 39 Series with aluminum sheaves is intended for boats up to 40 feet. Note: For maximum car release, use a 1.5 to 1 ratio between backstay base width and car height. Example: If backstay width is 5', car height should not exceed 7-1/2' to 8' in height off deck. Higher ratios may require manual release with aid of boat hook, etc.

$9.49

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Lewmar's Synchro blocks are more efficient, less expensive Lewmar's Synchro blocks combine geometry, sheave ratios and a unique free spin bearing, to deliver performance that s comparable to ball and roller bearing blocks used in pro racing at a more affordable price. With conventional blocks, one of the biggest losses in efficiency comes from the distortion of line as it wraps around the sheave. Synchro blocks provide the optimal ratio between line size, sheave diameter and the interface between rope and sheave. The result is larger sheaves with a smaller axle than on conventional blocks. For best performance, use the line sizes marked on sheaves. Synchro blocks improve efficiency by nearly 5% on a single block at a load of 442lb (200kg). Calculated over a typical six-block mainsheet system, this approaches a 40% improvement over conventional blocks. This new range of blocks transforms performance, not only by improving efficiency, but also speed and handling. Optimized block geometry, a revolutionary free spin bearing and a self-aligning head combine to reduce friction. Each component is synchronized with the movement of the line providing an easier, smoother transfer of power from deck to sail, and all with less line wear. Sheave: Reinforced plastic Ball Bearings: Free spin Sheave Size: 2" (50mm); 2.4" (60mm); 2.88" (72mm); 3.6" (90mm); 4.2" (105mm) Line Dia.: 3/8" Cheek Material/Finish: Stainless steel and plastic Shackle/Strap Type: 15 swivel

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Contains 40 sets of Button Sockets with 1/4" Barrel, 22 sets of Button Studs for 1/4" Barrel and Eyelet, eight Button Studs with #8 x 3/8" Tapping Screw, 10 Button Studs with #8 x 5/8" Tapping Screw, Punch Tool and Base.

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We offer a complete line of rugged dock hardware for building a dock at your summer cabin or waterfront home. Designed primarily for noncommercial users, it s sturdy enough for boat yards and smaller marinas. To help get you started, we offer a Planning Kit (See facing page) that s filled with details about dock design and construction. Once you have a plan and materials list, we ll supply the hardware and your local lumber yard can provide the wood. For ideas on constructing your own dock, taek a look at detailed plans at http://www.tiedown.com/pdf/a936-3.pdf Several sizes of float drums are available, please search under Model 140264 A. Inside Corner Used in combination with Outside Corner (E) to connect side and cross stringers on end of dock section. Includes welded gusset for dock framing. Requires eight 3/8" carriage bolt sets. H. Washer Plate Used with cross stringers to back up Angle Braces (C) or Pipe Holders (I). Two carriage bolt holes. B. Backup Plates 5" x 5" reinforcing plates are used to back up the Single T Males (F) and Females (G). I. 3"O.D. Pipe Holder Allows dock to ride up and down on anchoring pipe. Bolts to the outside of a side stringer and accepts up to 2"I.D. pipe. Uses two Washer Plates (H) for backing. Requires four 3/8" carriage bolt sets. C. Galvanized Stringer Angle Used to attach cross stringers to side stringers, and is backed up by Washer Plates (H). Requires four 3/8" carriage bolt sets. J. Outside Corner, Female This is identical to the Outside Corner End, except it has two 1/2" tabs which connect to a Male Outside Corner (K) to create a flexible joint between dock sections. No additional bolts required if used with an Inside Corner. D. Inside Corner with 2" Pipe Holder For 3" Pipe Model 542910 This inside corner allows you to use pipe at each corner for anchoring. Dock will float up and down if water level changes. Used in combination with outside corners (E). Requires eight 3/8" carriage-bolt sets. K. Outside Corner, Male This is identical to the Outside Corner End, except it has a single 1/2" tab which connects to a Female Outside Corner (J) to create a flexible joint between dock sections. Does not require additional bolts if used with an inside corner. E. Outside Corner End Used with Inside Corner to connect side stringers to end stringers, resulting in an absolutely square corner that won t come apart. No additional bolts required if used with Inside Corner (A). L. Piling Hoop & Roller Assembly Intended for areas with lots of wind, current, or tidal action. Combines the Piling Hoop (N) and Roller Assembly (M) to make up-and-down movement easier. For pilings up to 12"dia. F. Single T, Male Used to connect finger dock to main walkway, and to attach dock sections to sea walls. Single 1/2" tab connects to Female Single T (G) or female Outside Corner (J) to allow articulation. Four bolt holes. M. Heavy Duty Roller Assembly Bracket and roller bolt directly to the Deck Plate (L) and can be added to aid up-and-

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