Allen Brothers 30mm Dynamic Triple Block with Becket and Inverted Cleat (A2037)
The Allen Brothers A2037 is a 30mm triple Dynamic block with integrated becket and inverted Allenite cam cleat, designed to deliver maximum purchase with clean, controlled line management. With a maximum rope diameter of 8mm, it is ideally suited to high-load control systems on dinghies and performance boats.
Combining three sheaves, a dedicated tie-off point, and an integrated cleat, this block provides a complete solution for compact and efficient rigging setups.
Triple Sheave Design for High Purchase Systems
The A2037 features a three-sheave configuration, making it ideal for:
- Kicker / vang systems
- Cunningham systems
- Halyard tensioners
- General high-load purchase setups
This allows significant load reduction within the system, making adjustments easier under load.
Integrated Becket and Inverted Cam Cleat
The addition of both a becket and an inverted Allenite cam cleat provides a complete, self-contained system.
This offers:
- Secure rope termination via the becket
- Reliable line holding directly at the block
- Cleaner layouts without the need for separate cleats
The inverted cleat orientation is particularly effective for systems where the control line is led downward or needs to be managed close to the block.
Dynamic Bearing System for Smooth Performance
Each sheave runs on Allen’s patented Dynamic bearing system:
- Twin rows of stainless steel ball bearings
- Stainless steel bearing rail
- Acetal sheaves
This configuration ensures low-friction, fast-running performance, even under continuous adjustment. Compared to systems using plastic bearing races, the stainless-steel rail improves load distribution and long-term durability.
Ultra-Strap Construction for Strength and Reliability
The A2037 features Allen’s patented Ultra-Strap, manufactured using a coining process to enhance strength and durability.
This results in:
- A stronger, more hard-wearing stainless steel strap
- Improved reliability under load
- A rope-friendly profile suitable for modern rigging setups
A Complete Solution for High-Load Control Systems
The A2037 combines triple sheave efficiency with integrated rope termination and cleating, making it a highly effective solution for complex control systems.
For sailors looking to simplify rigging while maintaining maximum performance, it offers a compact, reliable and low-friction option within the Allen 30mm Dynamic range.
and then Add to Home Screen.
