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The Ronstan Shock Block is a sleek, sheaveless aluminum block designed for small line rigging where durability and low maintenance are key. With no moving parts, it delivers smooth, reliable performance even in sandy or gritty conditions. Ultra-lightweight yet incredibly strong, it's ideal for dinghy controls, vangs, tweakers, and a wide range of small-boat applications.
Ronstan Shock Block Item # 880029
Description
Ronstan Shock Blocks are sheaveless aluminum blocks that are perfect for some small line rigging applications that do not require ball bearing blocks. With no moving parts, Shocks™ provide ultimate durability and are maintenance free. They are ideal where sand and grit would compromise a bearing system or where regular flushing out isn't possible. Their gentle 3-dimensional geometry is kind on lines and they are available in multiple color options.
Features:
- Designed to fit a wide array of small diameter rigging uses
- Shocks are claimed to be prefect for moderate load uses where minimal purchase is required
- The compact Shocks are carefully engineered to work well even if the load alignment is not straight
- Made from anodized aluminum they weight only 2.5 g, yet can carry up to 350 kg of break-load force
- Ultimate durability
- With no moving parts SHOCKS provide ultimate durability and are maintenance free
- They are ideal where sand and grit would compromise a bearing system or where regular flushing out isn't possible
- Their gentle 3-dimensional geometry is kind on lines, but is strong enough to cope with poor leads
- The Shocks soft attachment compatibility make them suitable for use in numerous high performance dinghy and small sailboat rigging applications including tweakers, vangs, trapezes, cunninghams, barber haulers and kit bridles
- They are also handy on larger boats for uses such as ladder and motor hoists, lazy jacks, sail covers, and tie-downs
- They are available in four color choices to help keep complicated rigging configurations more organized
Specifications:
- Material: Anodized aluminum
Advantages:
- Performance and Versatility
- Ultra Lightweight - only 2g
- Ultra Compact
- Durable
- Color Coded
- Impact Resistant
- Small Line Optimized
- High Load Capacity - 350 kg (770 lb) Breaking Load
- Poor Alignment Tolerant
- Soft Attachment Compatible
- Versatile
- Grit and Salt Resistant
Applications:
- Vangs
- Tweakers
- In-spar Purchases
- Outboard Raisers
- Barberhaulers
- Sail Cover Zipper Lines
- Ladder Hoist
- Lazy Jacks
- Cunningham
- Garage Hoists
- Traveler Controls
- Kite Bridles
- Leech Lines
- Trailer Tie-downs
- Guy Lines
- Trapeze Elastics
- Control Lines
- 2:1 Halyards
- Luggage Ties