Description
Harken 29mm Triple Carbo Air Block w/Swivel | Boat Supply Store
Optimize mainsail and jib halyards on dinghies or trim lines on keelboats with the Harken 29mm Triple Carbo Air Block. Its Carbo Air construction provides exceptional strength-to-weight ratio, weighing only 74g while supporting a 449kg (990lb) working load. The low-friction sheave ensures smooth operation under load, crucial for effective sail control in challenging conditions, and the integrated swivel offers versatile attachment options. This block is ideal for sailors seeking efficient line management and reliable performance on boats up to 35 feet.
Key Features
- Lightweight Carbo Air construction minimizes rig weight.
- High Strength supports significant loads up to 449kg (990lb) for safe trimming.
- Low Friction sheave ensures smooth and efficient line movement.
- Compact Design maximizes space in crowded rigging systems.
- Integrated Swivel provides versatile rigging angles and prevents line twist.
- Triple Sheave configuration enables multi-line systems for complex control.
- Affordable Performance offers premium features at an accessible price point.
- Durable Construction built for demanding marine environments.
Specifications
| Product Specifications | |
|---|---|
| Sheave diameter | 29mm (1-1/8in) |
| Length | 73mm (2-7/8in) |
| Weight | 74g (2.6oz) |
| Shackle pin | 5mm (3/16in) |
| Max line | 8mm (5/16in) |
| Max working load | 449kg (990lb) |
| Breaking load | 907kg (2000lb) |
Who This Is For
This triple sheave block is engineered for performance-oriented cruising and racing sailors requiring efficient, lightweight line management solutions. It is ideally suited for dinghies, keelboats, and mid-size yachts where space and weight are critical considerations.
How It Compares
| Feature | Harken 29mm Triple Carbo Air Block w/Swivel | Competitor |
|---|---|---|
| Sheave Diameter | 29mm | — |
| Weight | 74g | 100g |
| Maximum Working Load | 449kg | — |
| Maximum Line Diameter | 8mm | — |
| Swivel | Yes | Yes |
Common Concerns Answered
The swivel mechanism can be stiff if not properly maintained. What is the best practice for maintenance?
To ensure smooth operation and longevity of the swivel, regular cleaning with fresh water after saltwater exposure and periodic application of a marine-grade lubricant is recommended. Avoid over-tightening fasteners if servicing.
What happens if loads exceed the specified working limit?
Operating the block beyond its rated 449kg (990lb) maximum working load can lead to premature wear of internal components and compromise the structural integrity, potentially resulting in failure.
Is this block suitable for offshore sailing?
With a breaking load of 907kg (2000lb) and a substantial working load limit, this block is suitable for many offshore applications where line management is critical. However, always consult your rigging professional to ensure it meets the specific demands of your vessel and voyage.
Frequently Asked Questions
What is the maximum line diameter this block can accommodate?
This Harken 29mm Triple Carbo Air Block can accommodate a maximum line diameter of 8mm (5/16in).
What is the working load limit for the Harken 29mm Triple Carbo Air Block?
The maximum working load limit for the Harken 29mm Triple Carbo Air Block is 449kg (990lb).
How much does the Harken 29mm Triple Carbo Air Block weigh?
The Harken 29mm Triple Carbo Air Block weighs only 74g (2.6oz).
What are Carbo Air blocks made of?
Carbo Air blocks are constructed using Harken's proprietary Carbo Air composite material, known for its exceptional strength-to-weight ratio and durability.
What is the shackle pin diameter?
The shackle pin diameter for this block is 5mm (3/16in).
