Description
Harken 38mm Single Big Bullet Block | Boat Supply Store
For sailors demanding superior control line efficiency under all load conditions, this 38mm Harken Single Big Bullet Block provides a critical advantage. Its integrated Bullet technology minimizes friction, enabling rapid trim and release even with lines up to 10mm (3/8") in diameter. Rated for a robust 136kg (300lb) working load, this compact and lightweight block is engineered for dependable performance on dinghies and cruising yachts operating from the Galveston Bay to the Gulf Stream.
Key Features
- Fast trim and release under high or low loads
- Low-friction Bullet block design for superior performance
- Compact and lightweight construction for minimal space
- Adaptable to almost all control line applications
- Durable sheave handles lines up to 10mm (3/8")
- Reliable operation with a 136kg (300lb) working load
- Harken quality for enduring marine use
- Efficient control line management
Specifications
| Product Specifications | |
|---|---|
| Sheave Diameter | 38mm |
| Maximum Line Diameter | 10mm (3/8") |
| Maximum Working Load | 136kg (300lb) |
Who This Is For
Sailors and boaters requiring a dependable, low-friction block for precise control line adjustment on vessels ranging from small dinghies to larger cruising yachts. Ideal for those who value performance and efficiency in their sailing hardware.
How It Compares
| Feature | Harken 38mm Single Big Bullet Block | Competitor |
|---|---|---|
| Sheave Diameter | 38mm | — |
| Maximum Line Diameter | 10mm (3/8") | — |
| Maximum Working Load | 136kg (300lb) | — |
| Low-Friction Design | Bullet block | Plain bearing, Synchro bearing |
Common Concerns Answered
Is the working load sufficient for heavy-duty applications?
While this Harken block has a robust 136kg (300lb) working load ideal for most control line applications, users requiring extremely high load capacities for specialized tasks might consider larger or specifically rated blocks. However, for standard sailing operations, its capacity is ample.
How does the sheave durability compare under heavy use?
Harken's Big Bullet block is built for durability, but like all blocks subjected to extended, very high-load use, sheave wear can occur. This is a common characteristic across many block types, and the Bullet design ensures excellent friction reduction throughout its operational life.
Is the working load limit too low for some users?
The 136kg (300lb) maximum working load is well-suited for a vast majority of control line applications on recreational vessels. Users needing significantly higher capacities for critical systems should evaluate their specific load requirements and consult product datasheets for higher-rated alternatives.
Frequently Asked Questions
What is the maximum line diameter for the Harken 38mm Single Big Bullet Block?
The Harken 38mm Single Big Bullet Block is designed to accommodate control lines with a maximum diameter of 10mm (3/8").
What is the maximum working load for this block?
This block has a maximum working load rating of 136kg (300lb).
What are the benefits of using Harken Bullet blocks?
Harken Bullet blocks are engineered for exceptionally low friction, which translates to faster and easier line adjustments, reduced wear on lines, and smoother overall operation, even under high loads.
What applications are suitable for the Harken 38mm Single Big Bullet Block?
This block is highly adaptable and suitable for a wide range of control line applications, including mainsheets, vang controls, halyards, and reefing lines on various sailboats.
How does the low-friction design of this block improve performance?
The low-friction design, achieved through Harken's Bullet technology, significantly reduces the force required to trim or release lines. This allows for quicker sail adjustments, better sail control, and reduced physical exertion for the sailor.
