Description
Harken 29mm Double Carbo Air Block | Boat Supply Store
For dinghy sailors and small keelboat racers requiring efficient control line management, this Harken block provides a significant advantage with its 29mm sheave diameter and a maximum line capacity of 8mm. Engineered with lightweight Carbo Air construction, it achieves a low friction coefficient, crucial for precise sail trim, and supports a substantial working load of 299kg (660lb). Its compact and reliable double block configuration ensures robust performance for mainsheets, vangs, and other critical systems, even in demanding conditions.
Key Features
- Lightweight and strong Carbo Air construction minimizes rig weight.
- Low-friction sheave ensures efficient line movement and sail trim.
- High working loads (299kg / 660lb) provide confidence for safe and easy trimming.
- Compact design saves space and reduces snagging potential on deck.
- Reliable performance for critical control lines.
- Double block configuration offers versatile rigging options.
- Affordable high-performance solution for budget-conscious sailors.
- Durable composite materials resist saltwater and UV degradation.
Specifications
| Product Specifications | |
|---|---|
| Sheave | 29mm / 1-1/8in |
| Length | 54mm / 2-1/8in |
| Weight | 34g / 1.2oz |
| Maximum line | 8mm / 5/16in |
| Maximum working load | 299kg / 660lb |
| Breaking load | 737kg / 1625lb |
Who This Is For
Dinghy sailors, small keelboat racers, and cruisers seeking lightweight, high-performance, and affordable block solutions for mainsheets, vangs, and other control lines. Ideal for those prioritizing efficiency and reliability without significant weight or cost penalties.
How It Compares
| Feature | Harken 29mm Double Carbo Air Block | Competitor |
|---|---|---|
| Sheave Diameter | 29mm | — |
| Weight | 34g | 50g, 45g |
| Maximum Working Load | 299kg / 660lb | — |
| Maximum Line Diameter | 8mm / 5/16in | — |
Common Concerns Answered
Is this block suitable for high-load applications?
With a maximum working load of 299kg (660lb), this block is robust for dinghy and small keelboat control lines. However, for extremely high-load, offshore racing applications, a block with a higher specified working load limit may be more appropriate.
How does the Carbo Air construction compare to traditional metal blocks?
Carbo Air construction utilizes advanced composite materials to achieve superior strength-to-weight ratios, low friction, and corrosion resistance compared to many traditional metal blocks, offering enhanced performance and longevity in marine environments.
I'm concerned about the working load limit being lower than some alternatives.
The 299kg (660lb) working load is sufficient for the intended applications of dinghy and small keelboat control lines like mainsheets and vangs. If your specific application requires a significantly higher load capacity, it's always prudent to consult Harken's load charts or consider a block engineered for those extreme demands.
Frequently Asked Questions
What is the maximum line diameter this Harken block can accommodate?
The Harken 29mm Double Carbo Air Block can accommodate a maximum line diameter of 8mm (5/16in).
What is the working load limit for the Harken 29mm Double Carbo Air Block?
The maximum working load limit for this block is 299kg (660lb).
How much does the Harken 29mm Double Carbo Air Block weigh?
This block weighs only 34g (1.2oz), contributing to a lighter overall rigging system.
What are the dimensions of the Harken 29mm Double Carbo Air Block?
The block has a sheave diameter of 29mm (1-1/8in) and an overall length of 54mm (2-1/8in).
Is this block suitable for high-load applications?
For typical dinghy and small keelboat mainsheet, vang, or control line applications, this block is highly suitable. Its working load of 299kg (660lb) is robust for these uses.
