ClearStart™ 40mm Sailing Watch- Red Innovative Race Functions with Bold Styling The most popular sailing watch in the world just got better. Ronstan's Clear Start™ race timer and watches are completely updated with bold styling and true sailing functionality. Besides the fresh look they feature large buttons, easy to read displays and advanced intuitive programming designed specifically with the racing sailor in mind. Developed with input from some of the world's top sailors, Clear Start™ watches and timers are sure to set the standard for years to come. If you're looking for a simple competitive edge, the difference is Clear Start™. Large Quick View Displays The entire Clear Start™ range features oversized digit displays for easy viewing. The compact 40mm Sailing Watch has impressive 10mm (3/8”) digits.  Race Sequence Resynchronisation All racing sailors know how hard it can be to get the watch going at the exact second the start sequence is commenced. With the handy SYNC function, you can quickly resynchronise the Clear Start™ to the official race time. A simple press of a button allows you to drop down to the next minute, allowing you to get your starting sequence back in perfect SYNC at the next opportunity. Pre-programmed Race Sequence Sounds The intuitive Clear Start™ sound signals let you know exactly where you are in the start sequence without looking at the display. Pre-programmed with World Sailing 5-4-1-0 and match racing start sequences, it can also be programmed for other countdown sequences by the user. Sound signals can be turned off if desired. End of Sequence - Countdown or Count Up Depending on the user's preference, the watch can be set up to auto repeat the countdown at the end of the sequence for general recall restarts, or to start counting up to track elapsed time. Multi-Line Display with Real Time No need to switch between countdown and time modes because the actual time is displayed below the countdown time on the multi-line ClearStart™ display. Daily Life Functionality From waking up for work to working out, the Clear Start™ range is also great for everyday activities. Standard modes include 12 or 24 hour time format, date in day/month or month/day format, daily alarm and chronograph (stop watch). Luminescent Backlight Bright, full-face electroluminescent backlighting is easy to read at night and can be turned on temporarily for a quick view. Water and Shock Resistant Designed to survive the rigors of competitive sailing, ClearStart™ watches and timers are water resistant rated at 5ATM and highly shock resistant. Watch housings are moulded in rugged fiber reinforced resin, with a resilient and super-comfortable silicon band.  Race Mode: Multiple start sequence options – World Sailing 5,4,1,0, match racing, user set.  SYNChronisation function – resynchronise if you start the countdown late.  Multi-line display – start sequence + time.  Loud intuitive countdown and start sound signals.  Countdown repeat, or count down and up (for elapsed race time).  Separate fast access race and time mode scrolling.  Water resistant to 5 ATM (50m/150ft) Features: Time, hours/minutes/seconds – 12 or 24 hour format.  Month/day or day/month format.  Daily alarm Chronograph - including hours and time of the day.  Luminescent backlight.  Battery saving mode – light can be turned off.  Shock resistant Specifications: Durable, ultra-clear mineral crystal lens.  Comfortable and secure silicon band.  Reinforced polycarbonate case.  40mm (1 9/16”) diameter face.  Oversized 10mm (3/8”) digit display.  Textured easy-find buttons.  Stainless steel buckle with silicon band retainer.  Stainless steel back.  Weight 50g (1.8oz) This product may not be returned to the original point of purchase. Please contact the manufacturer directly with any issues or concerns.

ClearStart™ 40mm Sailing Watch- Black Innovative Race Functions with Bold Styling The most popular sailing watch in the world just got better. Ronstan's Clear Start™ race timer and watches are completely updated with bold styling and true sailing functionality. Besides the fresh look they feature large buttons, easy to read displays and advanced intuitive programming designed specifically with the racing sailor in mind. Developed with input from some of the world's top sailors, Clear Start™ watches and timers are sure to set the standard for years to come. If you're looking for a simple competitive edge, the difference is Clear Start™. Large Quick View Displays The entire Clear Start™ range features oversized digit displays for easy viewing. The compact 40mm Sailing Watch has impressive 10mm (3/8”) digits.  Race Sequence Resynchronisation All racing sailors know how hard it can be to get the watch going at the exact second the start sequence is commenced. With the handy SYNC function, you can quickly resynchronise the Clear Start™ to the official race time. A simple press of a button allows you to drop down to the next minute, allowing you to get your starting sequence back in perfect SYNC at the next opportunity. Pre-programmed Race Sequence Sounds The intuitive Clear Start™ sound signals let you know exactly where you are in the start sequence without looking at the display. Pre-programmed with World Sailing 5-4-1-0 and match racing start sequences, it can also be programmed for other countdown sequences by the user. Sound signals can be turned off if desired. End of Sequence - Countdown or Count Up Depending on the user's preference, the watch can be set up to auto repeat the countdown at the end of the sequence for general recall restarts, or to start counting up to track elapsed time. Multi-Line Display with Real Time No need to switch between countdown and time modes because the actual time is displayed below the countdown time on the multi-line ClearStart™ display. Daily Life Functionality From waking up for work to working out, the Clear Start™ range is also great for everyday activities. Standard modes include 12 or 24 hour time format, date in day/month or month/day format, daily alarm and chronograph (stop watch). Luminescent Backlight Bright, full-face electroluminescent backlighting is easy to read at night and can be turned on temporarily for a quick view. Water and Shock Resistant Designed to survive the rigors of competitive sailing, ClearStart™ watches and timers are water resistant rated at 5ATM and highly shock resistant. Watch housings are moulded in rugged fiber reinforced resin, with a resilient and super-comfortable silicon band.  Race Mode: Multiple start sequence options – World Sailing 5,4,1,0, match racing, user set.  SYNChronisation function – resynchronise if you start the countdown late.  Multi-line display – start sequence + time.  Loud intuitive countdown and start sound signals.  Countdown repeat, or count down and up (for elapsed race time).  Separate fast access race and time mode scrolling.  Water resistant to 5 ATM (50m/150ft) Features: Time, hours/minutes/seconds – 12 or 24 hour format.  Month/day or day/month format.  Daily alarm Chronograph - including hours and time of the day.  Luminescent backlight.  Battery saving mode – light can be turned off.  Shock resistant Specifications: Durable, ultra-clear mineral crystal lens.  Comfortable and secure silicon band.  Reinforced polycarbonate case.  40mm (1 9/16”) diameter face.  Oversized 10mm (3/8”) digit display.  Textured easy-find buttons.  Stainless steel buckle with silicon band retainer.  Stainless steel back.  Weight 50g (1.8oz) This product may not be returned to the original point of purchase. Please contact the manufacturer directly with any issues or concerns.

ClearStart™ 40mm Sailing Watch- Blue Innovative Race Functions with Bold Styling The most popular sailing watch in the world just got better. Ronstan's Clear Start™ race timer and watches are completely updated with bold styling and true sailing functionality. Besides the fresh look they feature large buttons, easy to read displays and advanced intuitive programming designed specifically with the racing sailor in mind. Developed with input from some of the world's top sailors, Clear Start™ watches and timers are sure to set the standard for years to come. If you're looking for a simple competitive edge, the difference is Clear Start™. Large Quick View Displays The entire Clear Start™ range features oversized digit displays for easy viewing. The compact 40mm Sailing Watch has impressive 10mm (3/8”) digits.  Race Sequence Resynchronisation All racing sailors know how hard it can be to get the watch going at the exact second the start sequence is commenced. With the handy SYNC function, you can quickly resynchronise the Clear Start™ to the official race time. A simple press of a button allows you to drop down to the next minute, allowing you to get your starting sequence back in perfect SYNC at the next opportunity. Pre-programmed Race Sequence Sounds The intuitive Clear Start™ sound signals let you know exactly where you are in the start sequence without looking at the display. Pre-programmed with World Sailing 5-4-1-0 and match racing start sequences, it can also be programmed for other countdown sequences by the user. Sound signals can be turned off if desired. End of Sequence - Countdown or Count Up Depending on the user's preference, the watch can be set up to auto repeat the countdown at the end of the sequence for general recall restarts, or to start counting up to track elapsed time. Multi-Line Display with Real Time No need to switch between countdown and time modes because the actual time is displayed below the countdown time on the multi-line ClearStart™ display. Daily Life Functionality From waking up for work to working out, the Clear Start™ range is also great for everyday activities. Standard modes include 12 or 24 hour time format, date in day/month or month/day format, daily alarm and chronograph (stop watch). Luminescent Backlight Bright, full-face electroluminescent backlighting is easy to read at night and can be turned on temporarily for a quick view. Water and Shock Resistant Designed to survive the rigors of competitive sailing, ClearStart™ watches and timers are water resistant rated at 5ATM and highly shock resistant. Watch housings are moulded in rugged fiber reinforced resin, with a resilient and super-comfortable silicon band.  Race Mode: Multiple start sequence options – World Sailing 5,4,1,0, match racing, user set.  SYNChronisation function – resynchronise if you start the countdown late.  Multi-line display – start sequence + time.  Loud intuitive countdown and start sound signals.  Countdown repeat, or count down and up (for elapsed race time).  Separate fast access race and time mode scrolling.  Water resistant to 5 ATM (50m/150ft). Features: Time, hours/minutes/seconds – 12 or 24 hour format.  Month/day or day/month format.  Daily alarm Chronograph - including hours and time of the day.  Luminescent backlight.  Battery saving mode – light can be turned off.  Shock resistant Specifications: Durable, ultra-clear mineral crystal lens.  Comfortable and secure silicon band.  Reinforced polycarbonate case.  40mm (1 9/16”) diameter face.  Oversized 10mm (3/8”) digit display.  Textured easy-find buttons.  Stainless steel buckle with silicon band retainer.  Stainless steel back.  Weight 50g (1.8oz) This product may not be returned to the original point of purchase. Please contact the manufacturer directly with any issues or concerns.

RF4055 ClearStart™ 50mm Sailing Watch - Red/Grey Innovative Race Functions with Bold Styling Ronstan has taken the popular 50 mm (2") size and features you love and added more durability, comfort, and ease of use to our design. Ronstan’s ClearStart™ race timer and watches combine contemporary styling with true sailing functionality. They feature large buttons, easy to read displays and advanced intuitive programming designed specifically with the racing sailor in mind. Developed with input from some of the world’s top sailors, ClearStart™ watches and timers are sure to set the standard for years to come. If you’re looking for a simple competitive edge, the difference is ClearStart™. Features: Acrylic lens replaced by mineral crystal lens for improved clarity and durability Lens recessed in the case to improve impact resistance Glass-reinforced polycarbonate case now more durable A more flexible injection molded silicone band, which is more comfortable and more durable Lower profile and textured "easy-find" buttons Bold styling helps the 50mm ClearStart™ range stand out from the crowd Time, hours/minutes/seconds – 12 or 24 hour format Month/day or day/month format Daily alarm Chronograph - including hours and time of the day Luminescent backlight Battery saving mode – light can be turned off Shock resistant Specifications: Time, hours/minutes/seconds – 12 or 24 hour format Month/day or day/month format Daily alarm Chronograph - including hours and time of the day Luminescent backlight Battery saving mode – light can be turned off Shock resistant Race Mode: Multiple start sequence options – World Sailing 5,4,1,0, match racing, user set SYNChronization function – resynchronize if you start the countdown late Multi-line display – start sequence + time Loud intuitive countdown and start sound signals Countdown repeat, or count down and up (for elapsed race time) Separate fast access race and time mode scrolling Water resistant to 5 ATM (50m/150ft) The RF4055 models will have the popular ClearStart™ race sequence functions, as well as daily-life functionality. This product may not be returned to the original point of purchase. Please contact the manufacturer directly with any issues or concerns.

RF4055 ClearStart™ 50mm Sailing Watch - Black/Grey Innovative Race Functions with Bold Styling Ronstan has taken the popular 50 mm (2") size and features you love and added more durability, comfort, and ease of use to our design. Ronstan’s ClearStart™ race timer and watches combine contemporary styling with true sailing functionality. They feature large buttons, easy to read displays and advanced intuitive programming designed specifically with the racing sailor in mind. Developed with input from some of the world’s top sailors, ClearStart™ watches and timers are sure to set the standard for years to come. If you’re looking for a simple competitive edge, the difference is ClearStart™. Features: Acrylic lens replaced by mineral crystal lens for improved clarity and durability Lens recessed in the case to improve impact resistance Glass-reinforced polycarbonate case now more durable A more flexible injection molded silicone band, which is more comfortable and more durable Lower profile and textured "easy-find" buttons Bold styling helps the 50mm ClearStart™ range stand out from the crowd Time, hours/minutes/seconds – 12 or 24 hour format Month/day or day/month format Daily alarm Chronograph - including hours and time of the day Luminescent backlight Battery saving mode – light can be turned off Shock resistant Specifications: Time, hours/minutes/seconds – 12 or 24 hour format Month/day or day/month format Daily alarm Chronograph - including hours and time of the day Luminescent backlight Battery saving mode – light can be turned off Shock resistant Race Mode: Multiple start sequence options – World Sailing 5,4,1,0, match racing, user set SYNChronization function – resynchronize if you start the countdown late Multi-line display – start sequence + time Loud intuitive countdown and start sound signals Countdown repeat, or count down and up (for elapsed race time) Separate fast access race and time mode scrolling Water resistant to 5 ATM (50m/150ft) The RF4055 models will have the popular ClearStart™ race sequence functions, as well as daily-life functionality. This product may not be returned to the original point of purchase. Please contact the manufacturer directly with any issues or concerns.

RF4055 ClearStart™ 50mm Sailing Watch - Blue/Grey Innovative Race Functions with Bold Styling Ronstan has taken the popular 50 mm (2") size and features you love and added more durability, comfort, and ease of use to our design. Ronstan’s ClearStart™ race timer and watches combine contemporary styling with true sailing functionality. They feature large buttons, easy to read displays and advanced intuitive programming designed specifically with the racing sailor in mind. Developed with input from some of the world’s top sailors, ClearStart™ watches and timers are sure to set the standard for years to come. If you’re looking for a simple competitive edge, the difference is ClearStart™. Features: Acrylic lens replaced by mineral crystal lens for improved clarity and durability Lens recessed in the case to improve impact resistance Glass-reinforced polycarbonate case now more durable A more flexible injection molded silicone band, which is more comfortable and more durable Lower profile and textured "easy-find" buttons Bold styling helps the 50mm ClearStart™ range stand out from the crowd Time, hours/minutes/seconds – 12 or 24 hour format Month/day or day/month format Daily alarm Chronograph - including hours and time of the day Luminescent backlight Battery saving mode – light can be turned off Shock resistant Specifications: Time, hours/minutes/seconds – 12 or 24 hour format Month/day or day/month format Daily alarm Chronograph - including hours and time of the day Luminescent backlight Battery saving mode – light can be turned off Shock resistant Race Mode: Multiple start sequence options – World Sailing 5,4,1,0, match racing, user set SYNChronization function – resynchronize if you start the countdown late Multi-line display – start sequence + time Loud intuitive countdown and start sound signals Countdown repeat, or count down and up (for elapsed race time) Separate fast access race and time mode scrolling Water resistant to 5 ATM (50m/150ft) The RF4055 models will have the popular ClearStart™ race sequence functions, as well as daily-life functionality. This product may not be returned to the original point of purchase. Please contact the manufacturer directly with any issues or concerns.

HIT Hydrostatic Inflatable PFD w/Sailing Harness - Red/Black - Automatic/Manual This front entry PFD automatically inflates when submerged in 4” or more water pressure and features an integrated sailing harness for serious sailors.  The lightweight 500D Cordura® outer shell is durable, and the neoprene collar provides all-day comfort.  Heavy-duty stainless steel D-rings built into the front of the vest can attach to safety tethers.  The exclusive Hammar® Hydrostatic Inflator Technology (HIT) deploys only when submerged and not when hit with rain, spray, or humidity.  The SecureZip stays closed during high winds but opens easily on inflation.  A convenient window lets you check the indicator status, and you can also use the manual handle or oral tube to inflate the PFD at any time.  The water-resistant pocket secures and protects your essentials.  A whistle, strobe light holder, and SOLAR reflective tape all ensure additional on-the-water safety. *Upon inflation, it is essential to inspect and re-arm your PFD before next use. Features: Front entry with buckle for convenient donning and doffing Durable 500D Cordura® outer shell with reflective accents Neoprene Comfort Collar prevents chaffing SecureZip closure  Indicator window to check status (green means it's ready to go) Hydrostatic Inflator Technology (HIT) only inflates when submerged in 4” or more of water pressure  Manual inflation handle allows you to inflate the vest at any time Oral inflation tube for backup Water-resistant pocket  Two heavy-duty stainless steel D-rings for use with tethers Includes safety whistle for emergencies SOLAS reflective tape on inflation cell enhances visibility in low light conditions Holder for a strobe light Certifications: U.S.C.G. - Marine Buoyant Devices 160.076 - Type V Recreational  Technical Specifications: Color - Red/Black Inflation - Automatic/Manual CO2 Cylinder Size - 33 gram Size - Universal Adult Chest Size - 30" to 52" (76 to 132 cm) Weight Capacity  - ≥ 80 lb (≥36 kg) *Sold as an Individual  WARNING: This product can expose you to chemicals including ANTIMONY OXIDE (ANTIMONY TRIOXIDE),N,N-Dimethylformamide which are known to the State of California to cause cancer. For more information go to P65Warnings.ca.gov.

Clear Start™ Race Timer - 65mm(2-9/16") - Black/White Innovative Race Functions with Bold Styling The most popular sailing watch in the world just got better. Ronstan's Clear Start™ race timer is completely updated with bold styling and true sailing functionality. Besides the fresh look they feature large buttons, easy to read displays and advanced intuitive programming designed specifically with the racing sailor in mind. Developed with input from some of the world's top sailors, Clear Start™ watches and timers are sure to set the standard for years to come. If you're looking for a simple competitive edge, the difference is Clear Start™. Large Quick View Displays The entire Clear Start™ range features oversized digit displays for easy viewing. The Race Timer presents huge 16mm (5/8") numbers that can be easily viewed by the crew when mounted to the boom or mast base. Race Sequence Resynchronisation All racing sailors know how hard it can be to get the watch going at the exact second the start sequence is commenced. With the handy SYNC function, you can quickly resynchronise the Clear Start™ to the official race time. A simple press of a button allows you to drop down to the next minute, allowing you to get your starting sequence back in perfect SYNC at the next opportunity. Pre-programed Race Sequence Sounds The intuitive Clear Start™ sound signals let you know exactly where you are in the start sequence without looking at the display. Pre-programmed with ISAF 5-4-1-0 and Match Racing start sequences, it can also be programmed for other countdown sequences by the user. Sound signals can be turned off if desired. End of Sequence - Countdown or Count Up Depending on the user's preference, the watch can be set up to auto repeat the countdown at the end of the sequence for general recall restarts, or to start counting up to track elapsed time. Bold and Functional Styling Redesigned for a new generation, the Clear Start™ range offers clean modern styling without sacrificing usability. Available in three attractive color combinations that can be worn anywhere, the versatile large faced Race Timer can be worn as a watch or mounted remotely for easy viewing by the entire crew. Daily Life Functionality From waking up for work to working out, the Clear Start™ range is also great for everyday activities. Standard modes include 12 or 24 hour time format, date in day/month or month/day format, daily alarm and chronograph (stop watch). Luminescent Backlight Bright, full-face electroluminescent backlighting is easy to read at night and can be turned on temporarily for a quick view. Water and Shock Resistant Designed to survive the rigours of competitive sailing, Clear Start™ watches and timers are water resistant to up to 50M (150') and highly shock resistant. Features: Specialist RACE MODE Features including: Multiple Start Sequence options - ISAF 5,4,1,0, Match Racing, User Set SYNChronisation function - auto-correction if you start the coundown early or late Multi-line display - Start Sequences + Time Loud intiutive lead-up and start sound signals Countdown repeat or Countdown and up options (for elapsed race time) Separate fast access Race and Time mode scrolling Water resistant to 5 ATM (50M/150') - double gasket seals STANDARD Features including: Time, hours/minutes/seconds - 12 or 24hr format Month/Day or Day/Month format Daily alarm Chronograph - Including hours and time of the day Luminescent backlight Battery saving mode - light can be turned off Shock resistant Large 65mm (2 9/16") diameter face Oversized 16mm (5/8") digit display Rotating face Wrist/Hull/Mast/Boom mount options 30mm (1 1/18") wide stretch Nylon band with security loop Easy-use, flush fit buckle Dual batteries Extra-large easy-press silicon buttons - highlighted Start/Stop button This product may not be returned to the original point of purchase. Please contact the manufacturer directly with any issues or concerns.

Small Alloy Cam Cleat - Red, Black Base Features:  Hot-forged and hard anodized cams for maximum wear and corrosion resistance  Low effort line entry and exit due to unique teeth, line entry geometry and smooth finish  Unique self-cleaning, self-lubricating slotted bearings ensure consistent high performance even when subjected to high static loads  Superior resistance to sand and salt  Multi-coil spring generates near constant torque Easy entry/release and secure cleating of even the smallest diameter lines  Suitable for addition to swivel cleat bases for control lines and sheets  Small cleat has aluminium cams and a composite base for maximum durability and light weight  Medium cleat has an aluminium base and cams for maximum rigidity Engineered for Performance Intensive development efforts have produced this high performance range of cam cleats that provides unbeatable holding power while allowing easy cleating and releasing of control lines and sheets. Alloy Cleats™ Aluminium cam models built for ultimate durability where high wear and high loads are encountered. Cams are hot-forged and hard anodized for maximum strength and corrosion resistance. Ronstan Alloy Cleat™ models are available in sizes small and medium. The medium cleat is built on an aluminium base for maximum rigidity whilst the small cleat has a composite base for an optimum blend of lightness and durability. Slotted Bearings Self lubricating, self-cleaning slotted bearings provide lower frictional resistance, quicker response times and superior resistance to sand and salt than ball bearings which can deform under load. Multi-Coil Spring The multi-coil spring recessed in the upper part of the cam generates near constant torque. This consistency ensures secure cleating of even the smallest lines with minimal abrasion or rope wear. Unique Teeth and Entry Profiles Low effort line entry and exit due to unique teeth and entry geometry. Advanced Composite Base Small cleat has a base produced from long fiber reinforced polymer to save weight while providing essential stiffness. Customization A comprehensive range of specialist cleat accessories allow customization of the cleat set-up to optimize performance by controlling inward lead, outward lead, cleating and uncleating angle and height. Total Control Swivel cleat bases further enhance the function of cleats providing articulation, and with some models setting of cleating angle and direction (up or down cleating) to allow control of lines and sheets from various positions on the boat. Materials: Hard anodized aluminium cams Built on hard anodized aluminium base Specifications: Rope: 3/32 - 5/16 in. Height: 3/4 in. Width: 1 in. Length: 1-7/8 in. Fastener: 5/32 in. Fastener Hole Centers: 1-1/16 in. M.W.L : 165 lbs. B.L : 330 lbs Weight: 0.9 oz.

Flexible Shaft Coupling for 5" B/W, Hurth, & Volvo - 25HP/100RPM Capacity The R & D Marine Flexible Coupling consists of a flexible disc molded with a polyester elastomer. The disc gives clearance for bolt heads and is able to flex freely to take up any temporary misalignment of the engine and shaft due to flexing of the boat structure or the engine moving on its mount. Forward thrust is taken in compression on the disc between the two half couplings, and reverse thrust is retaken in compression on the disc between the two fail-safe straps. In the unlikely event of a severe impact, the steel straps make the coupling fail-safe and ensure the drive is maintained both forward and reverse. Reduce Engine Noise & Transmission Vibration Staggered bolts enable the element to isolate vibrations and compensate for some misalignment. Reduces Costly Transmission Repairs Absorbs shock loads due to hard gear changes. Fits Most Major Transmissions For engines, 5 to 1,500 horsepower It fits brands such as Borg Warner, ZF-Hurth, Twin Disc, Volvo, Yanmar, Technodrive, and more. Under Compression Load In Both Forward & Reverse The aft steel strap bolted to the transmission acts as a backing plate to prevent reverse thrust from pulling the element apart. Quick & Easy Installation The R & D Marine Flexible Coupling requires no machining and comes supplied with bolts to connect between the two existing shaft flanges. Extremely Durable Impervious to saltwater, diesel, and lubrication oils. The Flexible Couplings are made from a polyester elastomer not affected by saltwater, diesel, or lubrication fluids. Fail-Safe Design A fail-safe design is incorporated in the R & D Flexible Shaft Coupling that prevents the two couplings from pulling apart in the event of an impact or element failure, whereas other couplings do not. This fail-safe design is accomplished by using two steel straps and thru-bolts going into both the shaft coupling and transmission output flange. The aft steel strap is bolted to the transmission output flange, and the front strap is bolted to the shaft coupling. In the event of an impact, the aft steel strap (bolted to the transmission) will catch the front steel strap (bolted to the shaft coupling) and prevent the drivetrain from pulling apart. The R & D element will absorb the shock load (reducing or eliminating damage to the transmission) and will maintain contact between the two couplings. The steel straps also keep the R & D Flex-Coupling under a compression load in both forward and reverse operation (the aft strap bolted to the transmission acts as a backing plate). Machined Not Molded The Drivesaver is molded, while the R & D Flexible Shaft Coupling is machined. Both designs suggested that you first set your alignment by drawing the two couplings up to each other and then adding the flex-coupling. The machined part will have MUCH tighter tolerance than a molded part. Checking Alignment The R & D Flexible Shaft Coupling allows for alignment inspection after the element is bolted in place. There is one bolt head that is machined and painted red. After the R & D Flexible Shaft Coupling is bolted into place, a feeler gauge can be slipped between the red bolt head and the coupling. This process is repeated with the same bolt four times at 90-degree intervals by rotating the shaft. If the gap is within .010" (0.25mm), the engine is accurately aligned. To calculate the power of the coupling required: Horse Power of Engine x Reduction Ratio x 100 = HP/100RPM       Engine Speed   Example: Ford 150 HP at 2500 RPM with Borg Warner Velvet Drive 72C 2:1 Reduction Ratio Engine Horse Power is 150 HP, Max Rated RPM is 2500, Reduction Ratio is 2:1 150/2500 x 2 x 100 = 12 HP per 100RPM The coupling required is 910-009 Specifications: Manufacturer: B/W, Hurth, Volvo Diameter (inches/mm): 5 / 127 # of Bolts: 4 Diameter of Holes (inches/mm): 0.44 / 11.2 Bolt Pitch Circle (inches/mm): 4.25 / 107.9 Register (inches/mm): 2.5 / 63.5 Diameter (inches/mm): 5.63 / 143 Length (inches/mm): 2.06 / 52.4 Bolt Diameter: 7/16 UNF HP per 100 RPM (hp / kW): 25 / 18.64

Flexible Shaft Coupling for 4" Yanmar - 3HP/100RPM Capacity The R&D Flexible Couplings are fabricated from a contoured flexible disc molded in tough yet resilient new type polyurethane. The contoured disc gives clearance for the bolt heads, and is able to flex freely to take up any temporary misalignment of the engine and shaft, due to flexing of the boat structure or the engine moving on its rubber vibration isolation mountings. Forward thrust is taken in compression on the disc between the two half couplings and reverse thrust is taken again in compression on the disc between the two fail straps. In the unlikely event of a disc failure the steel straps make the coupling fail safe and ensure drive is maintained in both forward and reverse. To calculate power of coupling required: Horse Power of Engine x Reduction Ratio x 100 = HP/100RPM       Engine Speed Example: Ford 150HP at 2500RPM with Borg Warner Velvet Drive 72C 2:1 Reduction Ratio Engine Horse Power is 150HP, Max Rated RPM is 2500, Reduction Ratio is 2:1 150/2500 X 2 x 100 = 12HP per 100RPM Coupling required is 910-009 The R & D Marine Flexible Coupling fits between the transmission output flange and shaft coupling. It is designed to protect a boat's drivetrain. The unit will reduce vibration, compensate for some misalignment, isolate the shaft and absorb shock loads. The flexible disc is machined from a resilient and durable polyurethane. It allows the unit to flex, absorbing vibrations and temporary misalignment of the shaft and engine due to movement of the engine or flexing in the vessel's structure. The polyurethane disc is backed up by two metal compression straps, one on either side of the flexible coupling. These metal straps hold the system in constant compression whether the drivetrain is in forward or reverse. This feature extends the life of the system dramatically. The R & D Marine Flexible Coupling will also absorb shockloads resulting from gear changes, or the propeller striking a submerged object. The polyurethane disk will distort with light shock loads and is designed to be sacrificial in the event of severe shock load, saving on expensive drivetrain repairs. If the disc is destroyed from massive shockload the metal compression straps keep the coupling intact ensuring that the drive system is functional in both forward and reverse. Why R&D Marine Flexible Shaft Couplings? Polyurethane flange creates a flexible barrier to reduce drivetrain noise and vibration to quiet your drivetrain Absorbs transmission shock load caused by the propeller and high speed gear changes. This helps to reduce and avoid costly transmission damage Fail safe design, both forward and reverse thrust is taken in compression from the steel straps, giving a durable design even in extreme conditions

Flexible Shaft Coupling for 4" B/W, Hurth - 5HP/100RPM Capacity The R&D Flexible Couplings are fabricated from a contoured flexible disc molded in tough yet resilient new type polyurethane. The contoured disc gives clearance for the bolt heads, and is able to flex freely to take up any temporary misalignment of the engine and shaft, due to flexing of the boat structure or the engine moving on its rubber vibration isolation mountings. Forward thrust is taken in compression on the disc between the two half couplings and reverse thrust is taken again in compression on the disc between the two fail straps. In the unlikely event of a disc failure the steel straps make the coupling fail safe and ensure drive is maintained in both forward and reverse. To calculate power of coupling required: Horse Power of Engine x Reduction Ratio x 100 = HP/100RPM       Engine Speed Example: Ford 150 HP at 2500 RPM with Borg Warner Velvet Drive 72C 2:1 Reduction Ratio Engine Horse Power is 150 HP, Max Rated RPM is 2500, Reduction Ratio is 2:1 150/2500 X 2 x 100 = 12hp per 100RPM Coupling required is 910-009 The R & D Marine Flexible Coupling fits between the transmission output flange and shaft coupling. It is designed to protect a boat's drivetrain. The unit will reduce vibration, compensate for some misalignment, isolate the shaft and absorb shock loads. The flexible disc is machined from a resilient and durable polyurethane. It allows the unit to flex, absorbing vibrations and temporary misalignment of the shaft and engine due to movement of the engine or flexing in the vessel's structure. The polyurethane disc is backed up by two metal compression straps, one on either side of the flexible coupling. These metal straps hold the system in constant compression whether the drivetrain is in forward or reverse. This feature extends the life of the system dramatically. The R & D Marine Flexible Coupling will also absorb shockloads resulting from gear changes, or the propeller striking a submerged object. The polyurethane disk will distort with light shock loads and is designed to be sacrificial in the event of severe shock load, saving on expensive drivetrain repairs. If the disc is destroyed from massive shockload the metal compression straps keep the coupling intact ensuring that the drive system is functional in both forward and reverse. Why R&D Marine Flexible Shaft Couplings? Polyurethane flange creates a flexible barrier to reduce drivetrain noise and vibration to quiet your drivetrain Absorbs transmission shock load caused by the propeller and high speed gear changes. This helps to reduce and avoid costly transmission damage Fail safe design, both forward and reverse thrust is taken in compression from the steel straps, giving a durable design even in extreme conditions

Flexible Shaft Coupling for 4" B/W, Hurth - 8HP/100RPM Capacity The R&D Flexible Couplings are fabricated from a contoured flexible disc molded in tough yet resilient new type polyurethane. The contoured disc gives clearance for the bolt heads, and is able to flex freely to take up any temporary misalignment of the engine and shaft, due to flexing of the boat structure or the engine moving on its rubber vibration isolation mountings. Forward thrust is taken in compression on the disc between the two half couplings and reverse thrust is taken again in compression on the disc between the two fail straps. In the unlikely event of a disc failure the steel straps make the coupling fail safe and ensure drive is maintained in both forward and reverse. To calculate power of coupling required: Horse Power of Engine x Reduction Ratio x 100 = HP/100RPM       Engine Speed Example: Ford 150 HP at 2500 RPM with Borg Warner Velvet Drive 72C 2:1 Reduction Ratio Engine Horse Power is 150 HP, Max Rated RPM is 2500, Reduction Ratio is 2:1 150/2500 X 2 x 100 = 12hp per 100RPM Coupling required is 910-009 The R & D Marine Flexible Coupling fits between the transmission output flange and shaft coupling. It is designed to protect a boat's drivetrain. The unit will reduce vibration, compensate for some misalignment, isolate the shaft and absorb shock loads. The flexible disc is machined from a resilient and durable polyurethane. It allows the unit to flex, absorbing vibrations and temporary misalignment of the shaft and engine due to movement of the engine or flexing in the vessel's structure. The polyurethane disc is backed up by two metal compression straps, one on either side of the flexible coupling. These metal straps hold the system in constant compression whether the drivetrain is in forward or reverse. This feature extends the life of the system dramatically. The R & D Marine Flexible Coupling will also absorb shockloads resulting from gear changes, or the propeller striking a submerged object. The polyurethane disk will distort with light shock loads and is designed to be sacrificial in the event of severe shock load, saving on expensive drivetrain repairs. If the disc is destroyed from massive shockload the metal compression straps keep the coupling intact ensuring that the drive system is functional in both forward and reverse. Why R&D Marine Flexible Shaft Couplings? Polyurethane flange creates a flexible barrier to reduce drivetrain noise and vibration to quiet your drivetrain Absorbs transmission shock load caused by the propeller and high speed gear changes. This helps to reduce and avoid costly transmission damage Fail safe design, both forward and reverse thrust is taken in compression from the steel straps, giving a durable design even in extreme conditions

Flexible Shaft Coupling for 4" B/W, Hurth - 3HP/100RPM Capacity The R&D Flexible Couplings are fabricated from a contoured flexible disc molded in tough yet resilient new type polyurethane. The contoured disc gives clearance for the bolt heads, and is able to flex freely to take up any temporary misalignment of the engine and shaft, due to flexing of the boat structure or the engine moving on its rubber vibration isolation mountings. Forward thrust is taken in compression on the disc between the two half couplings and reverse thrust is taken again in compression on the disc between the two fail straps. In the unlikely event of a disc failure the steel straps make the coupling fail safe and ensure drive is maintained in both forward and reverse. To calculate power of coupling required: Horse Power of Engine x Reduction Ratio x 100 = HP/100RPM       Engine Speed Example: Ford 150 HP at 2500 RPM with Borg Warner Velvet Drive 72C 2:1 Reduction Ratio Engine Horse Power is 150 HP, Max Rated RPM is 2500, Reduction Ratio is 2:1 150/2500 X 2 x 100 = 12hp per 100RPM Coupling required is 910-009 The R & D Marine Flexible Coupling fits between the transmission output flange and shaft coupling. It is designed to protect a boat's drivetrain. The unit will reduce vibration, compensate for some misalignment, isolate the shaft and absorb shock loads. The flexible disc is machined from a resilient and durable polyurethane. It allows the unit to flex, absorbing vibrations and temporary misalignment of the shaft and engine due to movement of the engine or flexing in the vessel's structure. The polyurethane disc is backed up by two metal compression straps, one on either side of the flexible coupling. These metal straps hold the system in constant compression whether the drivetrain is in forward or reverse. This feature extends the life of the system dramatically. The R & D Marine Flexible Coupling will also absorb shockloads resulting from gear changes, or the propeller striking a submerged object. The polyurethane disk will distort with light shock loads and is designed to be sacrificial in the event of severe shock load, saving on expensive drivetrain repairs. If the disc is destroyed from massive shockload the metal compression straps keep the coupling intact ensuring that the drive system is functional in both forward and reverse. Why R&D Marine Flexible Shaft Couplings? Polyurethane flange creates a flexible barrier to reduce drivetrain noise and vibration to quiet your drivetrain Absorbs transmission shock load caused by the propeller and high speed gear changes. This helps to reduce and avoid costly transmission damage Fail safe design, both forward and reverse thrust is taken in compression from the steel straps, giving a durable design even in extreme conditions

Flexible Shaft Coupling for 5" B/W, Hurth - 13HP/100RPM Capacity The R&D Flexible Couplings are fabricated from a contoured flexible disc molded in tough yet resilient new type polyurethane. The contoured disc gives clearance for the bolt heads, and is able to flex freely to take up any temporary misalignment of the engine and shaft, due to flexing of the boat structure or the engine moving on its rubber vibration isolation mountings. Forward thrust is taken in compression on the disc between the two half couplings and reverse thrust is taken again in compression on the disc between the two fail straps. In the unlikely event of a disc failure the steel straps make the coupling fail safe and ensure drive is maintained in both forward and reverse. To calculate power of coupling required: Horse Power of Engine x Reduction Ratio x 100 = HP/100RPM       Engine Speed Example: Ford 150 HP at 2500 RPM with Borg Warner Velvet Drive 72C 2:1 Reduction Ratio Engine Horse Power is 150 HP, Max Rated RPM is 2500, Reduction Ratio is 2:1 150/2500 X 2 x 100 = 12hp per 100RPM Coupling required is 910-009 The R & D Marine Flexible Coupling fits between the transmission output flange and shaft coupling. It is designed to protect a boat's drivetrain. The unit will reduce vibration, compensate for some misalignment, isolate the shaft and absorb shock loads. The flexible disc is machined from a resilient and durable polyurethane. It allows the unit to flex, absorbing vibrations and temporary misalignment of the shaft and engine due to movement of the engine or flexing in the vessel's structure. The polyurethane disc is backed up by two metal compression straps, one on either side of the flexible coupling. These metal straps hold the system in constant compression whether the drivetrain is in forward or reverse. This feature extends the life of the system dramatically. The R & D Marine Flexible Coupling will also absorb shockloads resulting from gear changes, or the propeller striking a submerged object. The polyurethane disk will distort with light shock loads and is designed to be sacrificial in the event of severe shock load, saving on expensive drivetrain repairs. If the disc is destroyed from massive shockload the metal compression straps keep the coupling intact ensuring that the drive system is functional in both forward and reverse. Why R&D Marine Flexible Shaft Couplings? Polyurethane flange creates a flexible barrier to reduce drivetrain noise and vibration to quiet your drivetrain Absorbs transmission shock load caused by the propeller and high speed gear changes. This helps to reduce and avoid costly transmission damage Fail safe design, both forward and reverse thrust is taken in compression from the steel straps, giving a durable design even in extreme conditions