Description
Harken 57mm Carbo Single Ratchet Block | Boat Supply Store
Manage loaded lines with enhanced control and confidence using the Harken 57mm Carbo Single Ratchet Block, specifically engineered for dinghies and small keelboats. Its Carbo Ratchet technology offers a 10:1 holding power, significantly reducing fatigue when handling sheets in medium to light air conditions. Featuring a 57mm sheave diameter and a maximum line capacity of 10mm, this block supports a working load of up to 500 lbs, ensuring secure and precise line management for demanding sailing scenarios.
Key Features
- Secure Holding Power: Experience a 10:1 holding ratio with the Carbo Ratchet technology, essential for managing loaded sheets.
- Controlled Easing: Achieve a balance between robust holding and smooth, controlled line release.
- Versatile Operation: An easily accessible on/off switch for the ratchet mechanism is operable from either side.
- Lightweight Construction: Benefit from Harken's signature Carbo material, ensuring high strength without added weight.
- Swiveling Head: Offers flexible line angles, adapting to various rigging configurations.
- Medium/Light Air Performance: Standard grip is optimized for effective performance in moderate to light wind conditions.
- Robust Sheave: A 57mm sheave diameter accommodates larger line sizes efficiently.
- High Load Capacity: Supports a maximum working load of 500 lbs (227 kg) for demanding applications.
Specifications
| Product Specifications | |
|---|---|
| Sheave Diameter | 57mm |
| Max Line Diameter | 10mm |
| Max Working Load | 500 lb (227 kg) |
| Holding Power Ratio | 10:1 |
| Ratchet On/Off Switch | Yes |
| Head Type | Swivel |
Who This Is For
Sailors of dinghies, small keelboats, and performance cruising yachts requiring a block with both secure line retention and the capacity for smooth easing. Ideal for managing sheets in moderate to light wind conditions where precise control is paramount.
How It Compares
| Feature | Harken 57mm Carbo Single Ratchet Block | Ronstan Series 40 Single Swivel Ratchet Block |
|---|---|---|
| Sheave Diameter | 57 mm | — |
| Max Line Diameter | 10 mm | — |
| Max Working Load (lb) | 500 lb | 770 lb |
| Holding Power Ratio | 10:1 | Not Specified |
| Ratchet On/Off Switch | Yes | Yes |
Common Concerns Answered
Is the ratchet mechanism difficult to operate?
While some users note the ratchet can be slightly stiff initially, this typically eases with use. The on/off switch is designed for easy operation from both sides once engaged.
Does the swivel mechanism require maintenance?
Occasional reports of stiffness in the swivel mechanism highlight the importance of regular cleaning and lubrication, a standard practice for maintaining optimal performance in marine hardware.
Is the price justified for a single block?
Compared to non-ratcheting blocks, the Harken 57mm Carbo Single Ratchet Block's price reflects its advanced technology. The enhanced line control and safety it provides, particularly in challenging conditions, represent a significant value investment for serious sailors.
Frequently Asked Questions
What is the holding power of the Harken 57mm Carbo Single Ratchet Block?
The block provides a 10:1 holding power ratio in its standard grip mode, offering substantial force to secure loaded lines.
Can the ratchet function be turned on and off?
Yes, the ratchet mechanism features an on/off switch that can be easily operated from either side of the block.
What is the maximum line diameter this block can accommodate?
This block is designed to accommodate a maximum line diameter of 10mm.
What is the maximum working load for this block?
The maximum working load for the Harken 57mm Carbo Single Ratchet Block is 500 lbs (227 kg).
Is this block suitable for light or heavy air conditions?
The standard grip is optimized for medium to light air conditions, providing effective holding and control. For heavier air, sailors might consider blocks with different grip patterns or higher load ratings.
