Description
Ronstan Series 40 Orbit RT Block w/Cleat | Boat Supply Store
For sailors demanding precise control on dinghies, off-the-beach catamarans, and sportsboats up to 8 meters, this Ronstan block addresses critical sheeting and control line management. It boasts class-leading dynamic and static load ratings, with a Working Load Limit (M.W.L.) of 1320 lb and a Breaking Load (B.L.) of 2650 lb, ensuring robust performance. The integrated carbon-reinforced C-Cleat™ provides secure, high-performance cleating for mainsheet, spinnaker, halyard, vang, and backstay applications.
Key Features
- Class-Leading Load Ratings for exceptional strength and durability.
- Lightweight, Robust Construction using toughened glass fiber reinforced nylon cheeks.
- Low Friction 2-Stage Ball Bearing System for maximum efficiency and speed.
- Secure Rope Holding via the carbon-reinforced C-Cleat™.
- Adjustable Cleat Arms for customized cleating angles.
- High Performance Cleating with integrated fairleads for rapid rope engagement.
- Compact and Low Profile Design minimizing deck clutter.
- Superior Balance of strength, performance, and reliability.
Specifications
| Product Specifications | |
|---|---|
| Sheave Diameter | 1-9/16 in. |
| Max. Rope Diameter | 5/16 in. |
| Pin Diameter | 5/32" |
| Working Load Limit (M.W.L.) | 1320 lb. |
| Breaking Load (B.L.) | 2650 lb. |
| Weight | 13.0 oz. |
Who This Is For
Ideal for competitive sailors and recreational boaters using dinghies, off-the-beach catamarans, and sportsboats up to 8m (26ft) requiring precise control for mainsheet and spinnaker systems. Also suitable for control lines on larger yachts up to 9m (30ft) including halyard, vang, and backstay applications.
How It Compares
| Feature | Ronstan Series 40 Orbit RT Block w/Cleat | Competitor |
|---|---|---|
| Sheave Diameter | 1-9/16 in. | — |
| Max. Rope Diameter | 5/16 in. | — |
| Working Load Limit (M.W.L.) | 1320 lb | 1100 lb, 1000 lb |
| Weight | 13.0 oz | 3.35 oz, 4.23 oz |
| Cleat Type | Carbon-reinforced C-Cleat™ | Ratchomatic (no fixed cleat), Synchro Cleat |
| Bearing System | 2-stage ball bearing | Carbo, Synchro |
Common Concerns Answered
Is this block too expensive for casual sailing?
While the Ronstan Series 40 Orbit RT Block represents a premium investment due to its advanced materials and engineering, its class-leading load ratings and superior bearing system deliver performance and reliability that justify the price for serious sailors, particularly those utilizing it for critical applications on performance-oriented craft.
Are there simpler cleating options available?
This block features the high-performance, carbon-reinforced C-Cleat™ with adjustable arms for optimal cleating angles. While some users may have unique requirements, this integrated system offers exceptional rope security and fast action, satisfying the needs of most demanding sail control scenarios.
Will this block handle the loads on my larger sailboat?
The Ronstan Series 40 Orbit RT Block is specifically recommended for control line applications on larger yachts up to 9m (30ft), including halyard, vang, and backstay systems, with a robust Working Load Limit (M.W.L.) of 1320 lb. For sheeting systems on larger vessels, Ronstan offers larger Series blocks.
Frequently Asked Questions
What is the maximum rope diameter this Ronstan block can accommodate?
The Ronstan Series 40 Orbit RT Block is designed to accommodate a maximum rope diameter of 5/16 inches.
What are the working and breaking load limits for the Ronstan Series 40 Orbit RT Block?
This block has a Working Load Limit (M.W.L.) of 1320 lb and a Breaking Load (B.L.) of 2650 lb.
What applications is the Ronstan Series 40 Orbit RT Block suitable for?
It is ideal for mainsheet and spinnaker systems on dinghies, off-the-beach catamarans, and sportsboats up to 8m (26ft), and for halyard, vang, and backstay applications on boats up to 9m (30ft).
What makes the Ronstan Series 40 Orbit RT Block's bearing system efficient?
The block utilizes a low-friction, 2-stage ball bearing system that significantly reduces rotational resistance, allowing for smoother operation and faster response under load.
Can the cleat angle be adjusted on this Ronstan block?
Yes, the cleat arms on this Ronstan block are adjustable, allowing the user to set the preferred cleating angle for optimal ergonomics and secure rope management.
