Barton Marine
Ronstan 40mm Block and Tackle Pack 4:1 Sailing Purchase System
The Ronstan 40mm Block and Tackle Pack 4:1 is a complete pre-configured purchase system designed to provide smooth, efficient load handling for sailing, marine, and general-purpose applications. Featuring genuine Ronstan 40mm all purpose blocks arranged in a 4:1 mechanical advantage system, this tackle pack delivers excellent load reduction, making it easier to tension, lift, trim, and control lines onboard.
Built around Ronstan's quality and precise technology, the system offers low-friction performance and efficient load transfer while maintaining lightweight durability. A 4:1 purchase system reduces the effort required to move a load by approximately four times, making it ideal for sail controls, vang systems, cunningham systems, lifting arrangements, and general rigging tasks.
Manufactured using UV-stabilised materials, marine-grade stainless steel components, the Ronstan 40mm Block and Tackle Pack is designed to withstand New Zealand's harsh marine conditions while providing long-term reliability.
Ideal for dinghies, trailer yachts, keelboats, cruising yachts, sports boats, and marine maintenance applications, this ready-to-use tackle system simplifies rigging and delivers dependable performance both on and off the water.
Key Features
- Genuine Ronstan block and tackle system
- 4:1 mechanical advantage purchase
- Premium 40mm blocks
- Smooth low-friction operation
- Lightweight marine-grade construction
- UV-resistant materials
- Corrosion-resistant stainless steel fittings
- Pre-configured ready-to-use system
- Ideal for sail control applications
- Suitable for lifting and tensioning loads
- Reliable marine performance
- Trusted Ronstan quality
Ronstan blocks are designed to provide high efficiency and low friction under varying load conditions, making them ideal for sailing control systems.
Why Buy the Ronstan 40mm Block and Tackle Pack 4:1 from Barton Marine NZ?
At Barton Marine NZ we supply genuine Ronstan sailing hardware trusted by sailors throughout New Zealand. This complete 4:1 tackle system offers an easy-to-install solution for sail handling, rigging upgrades, and general marine load management.
Perfect for:
- Boom vang systems
- Cunningham controls
- Sail trim controls
- Outhaul systems
- Mast raising systems
- Dinghy rigging
- Trailer sailers
- Keelboats
- Cruising yachts
- General marine lifting tasks
Technical Specifications
| Feature | Specification |
|---|---|
| Brand | Ronstan |
| Product Type | Block and Tackle Pack |
| Block Size | 40mm |
| Purchase Ratio | 4:1 |
| Marine Suitable | Yes |
| Construction | Marine Grade Materials |
| Corrosion Resistance | Excellent |
Common Applications
The Ronstan 40mm Block and Tackle Pack 4:1 is commonly used for:
- Boom vangs
- Cunningham systems
- Outhaul controls
- Mast raising systems
- Sail adjustment systems
- Tensioning lines
- Utility lifting systems
- Dinghy rigging
- Yacht control systems
- General-purpose marine applications
The 4:1 purchase ratio provides substantial mechanical advantage, helping reduce the effort required to control higher loads.
Performance Benefits
The Ronstan 40mm Block and Tackle Pack provides:
- Reduced line loads
- Smooth trimming performance
- Increased control under load
- Efficient operation
- Lightweight handling
- Long-lasting marine durability
- Easy installation and operation
Ronstan systems are widely used in sailing applications because they deliver excellent efficiency and responsive line handling even under moderate loads.
Includes:
10m x 8mm marine polyester braid with eye splice
Ronstan 40mm RF41500 Fiddle block
Ronstsn 40mm RF41530 Fiddle with cleat and becket
Working load - 400kg
Breaking load - 1000kg
Travel distance 3m
