Harken 75mm Carbo Fiddle Ratchet Block with Becket and 150 Cam Cleat
Integrated control block for powerful purchase systems on small to mid-sized boats
The Harken 75mm Carbo Fiddle Ratchet Block with Becket and 150 Cam Cleat is a compact, high-efficiency solution for creating powerful 4:1 or 5:1 purchase systems. Ideal for mainsheet and vang systems on dinghies, keelboats, and small sportboats, it features a durable composite construction with a smooth-action ratchet and integrated cleating for precise, one-handed control.
Versatile, Self-Contained System
This configuration combines:
- A 75mm ratchet sheave on top
- A small-diameter fiddle sheave below
- An integrated becket at the base for attaching a control line return
- A Harken 150 Cam-Matic® cleat mounted on an adjustable arm for clean take-up and release
Together, these features allow for easy trimming and cleating under load, without the need for separate deck hardware.
Automatic Ratchet for Load Management
The upper sheave features an automatic ratchet that engages under load and disengages when released—providing excellent holding power during high-load trims, but allowing smooth easing when required. This system enhances control while reducing fatigue.
Lightweight, Tough Composite Build
The block housing is made from Harken's Carbo Rille® reinforced composite, which offers exceptional strength-to-weight ratio and corrosion resistance. It's light enough for performance dinghies and tough enough for the demands of inshore racers.
Specifications:
- Sheave Diameter: 75mm (upper), 40mm (lower)
- Maximum Line Diameter: 12mm
- Safe Working Load (SWL): 550kg
- Breaking Load: 1650kg
- Ratchet: Automatic
- Cleat Type: Harken 150 Cam Cleat
- Attachment: Swivel head with shackle
- Becket: Integrated
Ideal for use in:
- Mainsheet systems on dinghies and small keelboats
- Vang or backstay tackles
- Trapeze or traveller controls
The Harken 75mm Carbo Fiddle Ratchet Block w/ Becket and Cam delivers smooth, compact control in a single unit—perfect for performance sailors who want responsive trimming and secure cleating in one integrated system.
Specifications
| Recommended line - Max Ø (mm) | 12 |
| Sheave Ø (mm) | 75 |
| Pin Ø (mm) | 6 |
| Ratchet | Yes |
| SWL (kg) | 550 |
| NBL (kg) | 1650 |
| Weight (g) | 475 |
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