Attaching two Ronstan lashing blocks may seem tricky at first, but with the right sailing gear it becomes a simple and reliable process. On a sailboat or dinghy, these sailing blocks are essential for handling the mainsheet, spinnaker, or any control line. Ronstan sailboat hardware is trusted worldwide because blocks are designed for strength, durability, and precision.
Whether you use a single block, double block, or even a snatch block, the lashing line and soft shackles give flexibility in attachment options. The true value of Ronstan blocks is in their high performance and the highest strength-to-weight ratio available. Popular Ronstan series 40 or smaller series 30 ball bearing designs feature advanced fibre and Dyneema® lashing that make setup smooth and secure.
The block head, sheave and bearing system, and even the 2-stage bearing race in orbit blocks™ show how blocks provide efficiency for both mainsheet systems and spinnaker sheets. With proper user instructions, attaching blocks to create a strong rig will feel natural for every sailor, from beginners to those using top sailing instruments.
Introduction to Ronstan Orbit Blocks
Ronstan has created a reputation for making sailboat blocks that balance strength with lightweight efficiency. Each orbit block™ is designed to handle a specific working load, giving sailors confidence in demanding situations. Compared to Harken or other brands, many sailors prefer the simplicity and reliability of Ronstan’s design. The heart of every orbit block™ is its ability to perform under load while remaining easy to handle. These blocks feature advanced materials that resist wear in marine conditions. Whether you are racing or cruising, the focus is always on dependable function. Ronstan’s engineering makes them a trusted part of modern sailing gear.
Overview of Ronstan Series 20, 30, and 40 Blocks
| Feature | Ronstan Series 20 | Ronstan Series 30 | Ronstan Series 40 |
|---|---|---|---|
| Size and Weight | Ultra-compact and light, ideal for dinghy or small sailboat systems. | Mid-sized, balanced for both dinghy and keelboat applications. | Larger format, built for yachts and heavier sailing loads. |
| Load Capacity | Handles light control lines with efficiency. | Designed for moderate working loads in mainsheet or spinnaker systems. | Built for high working loads, suitable for demanding offshore sailing. |
| Design Focus | Precision for small control adjustments and minimal friction. | Versatility across multiple rigging applications. | Strength and durability for heavy-duty sailing situations. |
| Common Applications | Control lines, vang systems, lightweight traveler setups. | Mainsheet systems, halyards, reefing, and jib leads. | Spinnaker sheets, primary mainsheet systems, and standing rigging support. |
| Materials | Engineered plastics with stainless steel reinforcement. | Combination of composite materials and stainless fittings. | Composed of advanced composites and reinforced load-bearing elements. |
Difference Between Single, Double, and Ball Bearing Orbit Blocks
Single, double, and ball bearing orbit blocks each serve unique functions on a sailboat, balancing simplicity, load capacity, and smooth operation. Choosing the right type ensures efficiency and safety.
Key distinctions include:
- Single blocks for basic line redirection
- Double blocks for handling heavier loads or creating mechanical advantage
- Ball bearing orbit blocks for minimal friction and smooth line movement
- Suitable sizes for specific lines and working loads
- Durability under repeated use
Applications in Sailing and Rigging
Blocks are essential for redirecting lines, controlling sails, and optimizing deck efficiency. They can be used in both standing rigging and adjustable systems.
Common applications are:
- Adjusting sail trim on dinghies and sailboats
- Redirecting halyards and sheets
- Supporting mechanical advantage in high-load scenarios
- Reducing friction in precise adjustments
- Integrating with cleats and other deck hardware
Understanding Lashing Blocks and Soft Attachments
Lashing systems have become a favorite choice for sailors who want flexibility and reduced metal fittings on deck. Instead of relying on traditional blocks, a single lashing keeps the attachment light yet strong. Soft attachments minimize weight and make it easier to position blocks in the right place. Soft lashing solutions give sailors freedom without sacrificing safety. Sailors often pair these systems with a ratchet block when more holding power is required. The idea is to balance strength with versatility, which is key in sail and sailing situations. Once you understand the logic of lashings, they feel natural to use.
What Are Soft Attachment Blocks and Their Benefits
Soft attachment blocks are designed to connect lines to deck hardware without metal shackles, which makes handling easier and lighter. They reduce the risk of damage to the boat and provide more flexibility in positioning. These blocks are especially helpful for small boats or setups where weight matters. The main benefit of soft attachment blocks is the combination of strength and ease of use. They are simple to install and remove, making adjustments faster and safer. Many sailors appreciate how they reduce clutter and improve efficiency. Over time, soft attachment blocks can become an indispensable part of a clean, organized deck.
High Load vs. Low Friction Blocks for Sailing
| Feature | High Load Blocks | Low Friction Blocks |
|---|---|---|
| Primary Purpose | Designed to carry heavy working loads on mainsheet or spinnaker systems. | Optimized to reduce resistance and make lines run smoothly. |
| Typical Use | Used in primary sheets, halyards, or standing rigging where strength is critical. | Ideal for control lines, outhauls, and fine-tuning sail adjustments. |
| Material Construction | Reinforced composites or metal alloys for maximum durability. | Lightweight composites and engineered plastics for smooth operation. |
| Performance Focus | Emphasis on strength, durability, and reliability under heavy strain. | Focus on minimum friction and effortless line movement. |
| Weight Consideration | Usually heavier due to added reinforcement. | Very light, minimizing overall rig weight. |
| Maintenance Needs | Requires inspection for wear and corrosion due to heavy loads. | Needs occasional cleaning to maintain low friction efficiency. |
| Sailing Advantage | Provides confidence in handling high-tension situations. | Increases responsiveness and precision in sail adjustments. |
Choosing Between 20 mm, 30 mm, and 40 mm Blocks
Choosing the right block size depends on the load it will carry and the line diameter. Smaller blocks, like 20 mm, are perfect for lightweight applications, while 30 mm or 40 mm blocks handle heavier lines and greater stress. The key is matching the block size to the expected working load. Larger blocks provide smoother operation under strain but add weight. Medium-sized blocks offer a balance between strength and versatility. Considering the type of sailing you do and the forces involved helps in selecting the best option. Proper sizing ensures both safety and efficiency on board.
Preparing for Attachment of Two Ronstan Blocks
Before attaching two blocks, you should know their limits and how they will be used in standing rigging or control lines. A ronstan 30mm or even a 30mm orbit can be selected depending on the load. The head of the block must be inspected to ensure it is in good condition. Preparation is the stage where reliability begins for every sailor. The cleat arms, head post, and attachment points should all be checked before lashing. Even the choice of acetal sheaves matters, as it affects smooth operation. Once every piece is ready, attachment becomes far more secure.
Inspecting the Sheave, Swivel, and Becket
Regular inspection of the sheave, swivel, and becket is essential for smooth operation and preventing unexpected failures. Dirt, salt, and wear can create friction or block movement, reducing performance. Attention to these components ensures reliability under load. Rotating parts should move freely without sticking, and any cracks or deformations must be addressed immediately. Checking the alignment and attachment of each part helps maintain safety and efficiency. Even small issues in these components can escalate if ignored. Consistent inspections save both effort and potential repair costs.
Selecting Appropriate Shackle or Swivel Shackle
Choosing the right shackle ensures a secure and flexible connection between block and line. Swivel shackles provide rotation that reduces twisting.
Considerations when selecting shackles include:
- Material strength and corrosion resistance
- Size matching the block and line diameter
- Swivel option for dynamic line movement
- Ease of installation and removal
- Compatibility with cleats and deck fittings
Preparing the Lashing Head and Dyneema Line
Proper preparation of the lashing head and Dyneema line prevents wear and ensures smooth operation. Lines should be cut and spliced accurately.
Preparation steps include:
- Inspect line for frays or weak points
- Securely attach the line to the lashing head
- Verify correct length and tension
- Avoid twisting or kinking
- Test flexibility and smooth passage through the block
Step-by-Step Guide to Attaching Two Ronstan Lashing Blocks
When connecting two Ronstan blocks, the first step is aligning them correctly to share load evenly. A block with becket or a shackle head might be used depending on the purpose of the system. Using Dyneema® or similar fibre ensures the single lashing will remain durable. The process is about creating balance between strength and flexibility. Sailors often prefer ball bearing block designs because they move freely under pressure. Each different block type offers slightly unique handling, so choosing the right one matters. With careful lashing, the system becomes strong, secure, and easy to adjust.
Aligning Series 20 Ball Bearing Orbit Blocks for Optimal Load
Series 20 ball bearing orbit blocks must be carefully aligned to share the load evenly and prevent excessive wear. Misalignment can increase friction and strain, reducing performance. Proper alignment distributes forces efficiently and extends the life of the block. Check that the sheave rotates smoothly and that the block sits correctly in its mounting point. Adjusting orientation based on line direction ensures that tension remains consistent. When aligned correctly, the block handles weight easily and provides precise control. This simple step significantly improves safety and efficiency during sailing.
Connecting Using Cleat, Shackle, or Swivel Head
Blocks can be attached using cleats, shackles, or swivel heads depending on the system and load. Proper connection ensures stability and safety.
Connection techniques include:
- Tightening shackles to prevent slippage
- Using cleat arms for secure fastening
- Allowing swivel heads to rotate freely
- Checking alignment to reduce friction
- Confirming secure attachment under load
Securing Soft Attachment Lines Without Twisting or Kinking
Securing soft attachment lines requires care to prevent twisting or kinking, which can reduce strength and cause unpredictable movement. Lines should follow a natural curve and be fastened in a controlled manner. Avoiding twists and kinks preserves the integrity and strength of the line. Twisted lines can wear faster and may slip under load. Taking time to arrange the line properly ensures smooth operation of the block and prevents damage. Even experienced sailors benefit from double-checking lines before use. Proper technique improves both safety and performance on deck.
Testing and Adjusting the Lashing
After attaching, the lashing must be tested under simulated load to ensure safety. For example, 20mm or 40mm blocks behave differently under pressure, so adjustments may be needed. The design provides the optimum number of wraps to distribute stress evenly. Testing is the stage where trust is built between sailor and equipment. Ball bearing orbit blocks™ are especially sensitive to alignment, so smooth angles must be maintained. The composites in the block head also reduce wear when tension changes. Once the lashing is adjusted properly, the system will feel steady and reliable.
Checking Ball Bearing Orbit Block Rotation and Low Friction
Ball bearing orbit blocks require inspection to maintain smooth operation and minimal line resistance. Any debris or corrosion can reduce efficiency.
Inspection tips include:
- Rotate the sheave manually to check smoothness
- Listen for unusual grinding or clicks
- Ensure bearings move freely
- Clean any debris or salt buildup
- Confirm block alignment with line direction
Ensuring Proper Load Distribution on High Load Blocks
High load blocks must share tension evenly to prevent damage to lines or hardware. Misalignment can lead to rapid wear.
Steps for proper load distribution include:
- Align blocks in a straight line with the load
- Use mechanical advantage where needed
- Avoid sharp angles in the line
- Inspect attachment points for wear
- Adjust position to balance tension across multiple blocks
Adjusting Series 30 or 40 Orbit Blocks for Smooth Sailing
Adjusting larger orbit blocks is essential to maintain smooth operation and prevent excessive friction. The sheave and bearings must rotate freely, and any fasteners should be tight but not over-compressed. Smooth adjustment maximizes efficiency and reduces wear on lines and hardware. Larger blocks handle higher loads, so careful setup ensures reliable performance under stress. Checking alignment and tension regularly keeps the block performing at its best. Proper adjustment also reduces the effort needed to manage heavy lines. This attention to detail contributes to safer and more enjoyable sailing.
Maintenance and Best Practices for Ronstan Blocks
Caring for Ronstan blocks means keeping them clean, lubricated, and free from salt build-up. Many sailors choose ronstan bb orbit or mm orbit block models because their 2-stage bearing system lasts longer with minimal effort. Checking the optimum number of ba>Regular care ensures ball bearings for minimum friction and maximum performance. Worn parts such as sheaves or fittings should be replaced quickly to avoid bigger failures. Even 40mm blocks or larger designs benefit from inspection before each trip. With consistent attention, your blocks remain dependable across every sailing season.
Cleaning Sheaves and Ball Bearings for Long Life
Regular cleaning of sheaves and ball bearings prevents buildup of dirt and salt, which can cause corrosion and increase friction. Removing debris and lightly lubricating moving parts keeps the block running smoothly. Clean sheaves and bearings are the foundation of long-lasting performance. Even small amounts of grit can shorten the life of bearings and reduce efficiency. Regular maintenance ensures that each block continues to handle its rated load safely. Sailors who maintain their blocks experience fewer failures and smoother handling. Consistent care is a simple way to protect investment and improve sailing reliability.
Periodic Inspection of Shackles, Swivels, and Lashing
Routine inspection prevents failures and maintains system reliability. Regular checks extend the life of all components.
Inspection checklist includes:
- Look for corrosion or cracks in shackles
- Ensure swivel heads rotate freely
- Check Dyneema lines for frays or abrasions
- Confirm secure knots or attachments
- Test movement under light load
Tips for Safe and Efficient Rigging with Lashing Blocks
Proper rigging ensures smooth sailing and protects equipment from unnecessary wear. Safety and efficiency go hand in hand.
Essential tips include:
- Avoid overloading blocks or lines
- Maintain straight paths to reduce friction
- Secure attachments with appropriate shackles or cleats
- Keep lines untwisted and untangled
- Regularly check for wear or damage
