Description
Harken 40mm Carbo Air Fiddle Block Swivel | Boat Supply Store
Engineered for demanding control line applications, this Harken 40mm Carbo Air Fiddle Block with swivel minimizes friction and weight while maximizing load capacity. It efficiently handles lines up to 10mm diameter with a substantial 220kg maximum working load, ensuring precise adjustments for vangs, mainsheets, and outhauls on dinghies and smaller keelboats.
Key Features
- Lightweight and robust Carbo Air construction significantly reduces deck weight.
- High working loads up to 220kg enable safe and effortless sail trim.
- Compact design integrates seamlessly into complex rigging systems.
- Swiveling head offers unparalleled versatility in line routing and tensioning.
- Optimized for high-efficiency tackles including 3:1 and 4:1 configurations.
- Durable sheave engineered for minimal friction and extended service life.
- Secure attachment via a standard 4mm shackle pin.
- Broad compatibility with line diameters up to 10mm.
Specifications
| Product Specifications | |
|---|---|
| Sheave Diameter | 40mm |
| Length | 115mm |
| Weight | 51g |
| Shackle Pin Diameter | 4mm |
| Maximum Line Diameter | 10mm |
| Maximum Working Load (WLL) | 220kg |
| Breaking Load | 735kg |
Who This Is For
Ideal for dinghy racers and cruising sailors on small to mid-sized keelboats requiring a high-performance, lightweight block for critical control lines. This block offers a significant upgrade for anyone seeking improved efficiency and reliability in their sail handling systems.
How It Compares
| Feature | Harken 40mm Carbo Air Fiddle Block Swivel | Competitor |
|---|---|---|
| Sheave Diameter | 40mm | — |
| Maximum Working Load | 220kg | — |
| Weight | 51g | 55g |
| Maximum Line Diameter | 10mm | — |
| Breaking Load | 735kg | — |
Common Concerns Answered
What is the long-term durability of the Carbo Air material under heavy use?
While Carbo Air offers an exceptional strength-to-weight ratio, extended periods of heavy-duty use may show wear compared to solid metal blocks. Proper maintenance of the swivel mechanism and regular inspection will ensure optimal performance and longevity.
Can the swivel mechanism become stiff?
Yes, like any moving part exposed to the marine environment, the swivel can become stiff if not properly maintained. Regular rinsing with fresh water and occasional lubrication will prevent seizing and ensure smooth operation.
Is this block significantly lighter than traditional metal blocks?
The Harken Carbo Air construction results in a considerably lower weight profile. Weighing only 51g, it significantly reduces overall system weight compared to comparable metal blocks, which can be a critical factor on smaller vessels.
Frequently Asked Questions
What is the maximum line diameter this Harken block can accommodate?
The Harken 40mm Carbo Air Fiddle Block with Swivel is designed to accommodate lines with a maximum diameter of 10mm.
What is the working load limit for the Harken 40mm Carbo Air Fiddle Block?
This block has a maximum working load limit (WLL) of 220kg.
What are the typical applications for a 40mm fiddle block with a swivel?
Typical applications include control lines such as vangs, mainsheets, Cunningham systems, outhauls, and halyards on dinghies, small keelboats, and catamarans where precise trim and lightweight hardware are essential.
How does the Carbo Air material compare to traditional block materials like Delrin or metal?
Carbo Air offers a superior strength-to-weight ratio compared to traditional materials. It is significantly lighter than metal and offers higher working loads than many composite or Delrin sheaves, while providing excellent UV resistance and low friction.
Is this block suitable for dinghy vangs and mainsheets?
Absolutely. Its lightweight construction, high working load, and efficient swivel make it an excellent choice for critical dinghy control lines like vangs and mainsheets, providing sailors with immediate responsiveness and precise control.
