RONSTAN CATALOGUE PDF

It is no secret that the sailing industry has had its challenges over the past few years. But as they say, When the going gets tough the tough get going, and this catalogue bears testament to this philosophy, with an enormous amount of progress in evidence from Ronstan. Our most significant development since our last full line catalogue has been the addition of Andersen winches. They are showcased here in all their high quality, polished stainless steel glory. Another major development at Ronstan has been the investment in our new purpose built factory in Australia.

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It is no secret that the sailing industry has had its challenges over the past few years. But as they say, When the going gets tough the tough get going, and this catalogue bears testament to this philosophy, with an enormous amount of progress in evidence from Ronstan. Our most significant development since our last full line catalogue has been the addition of Andersen winches. They are showcased here in all their high quality, polished stainless steel glory. Another major development at Ronstan has been the investment in our new purpose built factory in Australia.

It is from here, and from our factory in Denmark that most of the products on these pages originate. The product of meticulous engineering, they deliver the ultimate in strength, weight saving, holding power and control. Advanced fibre and polymer technology that is up to ten times stronger than steel delivers a product that is more compact and lighter too. Through 3D modelling, Finite Element stress analysis and mould flow analysis, our engineers made sure that everything performs both in the laboratory and in the real world.

Months of on-water testing by elite sailors pushed the product to their limits. But when it comes with a Ronstan ratchet, why would you?! Their precision design allows the optimum number of ball bearings in loaded areas and eliminates them in inactive areas. Ineffective mass is reduced even further through fibre-reinforced composites in the block head, cleat arms and beckets. They have the same superior holding power, but with superior rope wear performance. Control switches on both sides of the block remain accessible whether fitted on port or starboard side, and the NC-machined alloy sheave and simple mechanism ensures superb reliability and durability.

To gain peak performance, we engineered out the heavy steel load straps, head post, full-length fasteners, and cleating accessories.

Through extensive research and development, we replaced all possible metal components with high-tech polymers and fibre equivalents. The unique BB block orbital design allows the bearing to only be in the active areas of the floating sheave.

This minimises the mass of the inactive return race and hub. Weight and bulk are further reduced in the different block configurations. Some models feature a throughsheave becket arrangement. The result? The lowest weight possible!

Multi-sheave blocks have only single intermediate cheeks and an ultra-light and efficient head arrangement. Other brands just link together their single blocks. This results in unnecessary double cheeks between each sheave, held together by a heavy steel channel across the top of the block. Highest working load in its class The orbital ball-bearing arrangement gives the largest possible bearing race diameter.

This maximises load performance. The proven Ronstan 2-stage bearing system features high compression grade Acetal ball bearings and a secondary full-contact bearing. This gives minimum friction across the full working load range. The flexible link can be left with one end attached to the block when fitting - no more lost shackle pins.

Stainless steel swivel shackle head models are also available for continuous rotation and ultimate durability. They have a wide range of adjustment and calibration marks, perfect for selecting your preferred cleating angle settings.

The sophisticated NC-machined sheave features Generation 2 of our patented sheave crosshole geometry. Traditional designs have only 8 faces or less with an angled resistance to line movement. Our Generation 2 design has straight resistance faces which both distribute the load and minimise rope wear.

Automatic and manual ratchet in one block Now you can enjoy the flexibility of setting up your ratchet blocks to suit yourself. This lets the sheet run out smoothly and freely- great for rapid easing of the sheet and for gybing asymmetric spinnakers. In manual mode, the ratchet mechanism can be switched on or off as required - popular main for sheeting.

Low friction 2-stage ball bearing system provides consistent performance over the full working load range. The supplied Lashing line must have 3 passes through head and hub to achieve rated load.

Knots, splices, stitching will generally have a lower B. Suitable for system at rated block load. Multi-sheave blocks feature single intermediate cheeks and an ultra-light and efficient head arrangement no heavy metal channel piece. RF - Stainless steel shackle head for unlimited block rotation, ultimate durability and compatibility with harsh fixing points.

ROPE M. Photo: Ben Nealyon. Swivel shackle base. Main sheave has two-stage, ball bearing. Suitable for or system at rated block load.

Bases Swivel shackle base. Swivel shackle head for unlimited block rotation. Stainless steel shackle head for ultimate durability and compatibility with harsh fixing points. RF when paired with a RFB and a RF lashed to the becket with a RF, produces a powerful mainsheet system for use on catamarans to 5. Mainsheet systems and spinnaker sheets on dinghies, catamarans, sportsboats and small keel boats to 9m 30ft.

Single, becket, swivel shackle head Double, becket, swivel shackle head Triple, becket, swivel shackle head Quad, becket, swivel shackle head. MWL kg lb , BL kg lb. Mainsheet systems and spinnaker sheets on dinghies, sportsboats and small keel boats to 9m 30ft. Load on becket not to exceed block load. Ultra low profile integrated becket. Halyard, vang and backstay applications on boats to 9m 30ft. Control line applications on larger yachts.

Suitable for a system at rated block load. For this situation use a shackle with a smooth surface between the Link and the fitting. A little tension on the Link may help to settle it into position. Note; where required to fit around an object wider than the head of the block eg a boom the ends of the custom Link must cross each other prior to being fitted into the recesses in the head of the block.

Knots, splices, stitching, etc. To avoid improper loading or failure of the becket, use only the correct method of line attachment for each type as described below. Use a finger to hold the other side of the Retainer Clip in place.

Pass the sheet end through both loops of the Link and secure with a bowline or splice. If using a pre-spliced sheet, secure with a cow hitch through both loops of the Link.

The cleat arm angle is indicated by the number aligned with the centre line of the block. The cleating angle can be adjusted from 0 degrees.

Diagram 5. RT blocks with cleats are fully automatic only. Building on the latest trends in grand prix dinghy and ocean racing, it replaces the steel head post and shackle arrangement of traditional blocks. It is more durable than polyester and has a specific strength that is 40 percent greater than Aramid fibre.

If in doubt, use a shackle with a smooth surface between the Link and the mounting point. Repeat with the MODE switch on the other side of the block. Misalignment or improper installation will reduce the load capacity of the block.

Any variation on these line angles will reduce the load capacity of the block. Like all running and standing rigging, the Link should be inspected regularly and replaced it if it shows significant amount of wear or fibre damage, or as a part of your regular boat maintenance program. Blocks, in particular the bearing areas, should be flushed with fresh water regularly and periodically cleaned with a mild detergent and water. See the Info section of the Ronstan web site and our catalogue for important customer considerations and warranty information.

Pivoting low lead block Pivoting low lead block, cleat Pivoting low lead block Pivoting low lead block, cleat. ROPE in. HOLE M. Ball Bearing blocks have been conceived and engineered for the demands of competitive sailing.

Used on boats of all sizes for sheet, fine tune and control line applications they utilise a highly efficient, low friction bearing systems for optimum sheeting and trimming performance. All Purpose Blocks with self-lubricating Acetal polymer sheaves running on polished Stainless Steel races perform equally well with dynamic loads and high static loads.

For durability and a long service life, these blocks are the right choice for sheets, halyards and control line applications for cruising and racing. Available in comprehensive range of sizes and configurations to suit a range of rope diameters and load requirements. Ball Bearing Blocks Ball Bearing Blocks meet the high performance demands of running sheet applications with a unique two-stage bearing system.

Stage 1 - Under moderate loads, Acetal ball bearings ensure minimum friction. Stage 2 - Under heavy loads, where deformation of ball bearings alone would result in increased friction, a sliding Acetal bearing on a polished Stainless steel race takes over, maintaining low friction performance. Regular flushing with fresh water to remove salt and sand will maintain optimum performance over a long service life.

Dynamic and High Static Load Performance UV stabilised Acetal sheaves provide bearing performance on a polished Stainless Steel race that performs equally well with dynamic and static loads.

Sheave design features side ribs to minimise weight and enhance strength. Self-lubricating Acetal polymer minimises friction and ensures dependable load bearing reliability.

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It is no secret that the sailing industry has had its challenges over the past few years. But as they say, When the going gets tough the tough get going, and this catalogue bears testament to this philosophy, with an enormous amount of progress in evidence from Ronstan. Our most significant development since our last full line catalogue has been the addition of Andersen winches. They are showcased here in all their high quality, polished stainless steel glory.

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