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Blocks

How to Install Stand Up Springs & Boots on a Block | Expert Advice

What are Stand Up Springs & Boots? Common sailboat block accessories, stand up springs and boots are meant to keep a block upright. Metal springs come tapered or straight in various sizes to fit a range of blocks. Stand up boots made of PVC are offered in large and small sizes and black or gray. After installation when the line running through the block is slack, the block will not collapse on its attachment point (deck of the boat, traveler car, etc…). Why […]

Sailboat Blocks Explained | Expert Advice

In sailing, hardware pulleys are referred to as ‘blocks.’ Blocks are used to create purchase systems, increase mechanical advantage or redirect and guide lines (ropes). There are many different configurations, attachments and design functionalities in the world of sailing blocks today. Parts of a Basic Block Bushing- Lining for sheave. Transfers load from the sheave to the cheeks. Sheave- Wheel with groove for rope to run on. Cheek- Encloses the sheave. Transfers the load to the straps/strop Strap or Strop- Lays on […]

Advantages and Uses for Plain Bearing Sailboat Blocks | Expert Advice

Plain bearing blocks are the original blocks that started it all. They paved the way for more advanced and higher performance blocks like the ball bearing and roller bearing blocks. Plain and simple is the name of the game for these guys. They have a simple construction with the least amount of moving parts you can find in a block. Generally they made of a plastic or metal sheave (the wheel thing) rolling on a metal pin or bushing. In some instances, they were made of Bakelite […]

Advantages and Uses of Roller Bearing Sailboat Blocks | Expert Advice

So you may be asking yourself, Why would I need a fancy shmancy Roller Bearing Block? What makes them so special anyway? Well..we are here to show you. One of the greatest advantages of a Roller Bearing Block over a Plain or Ball Bearing Block is the low friction safe working loads.  Highly loaded lines in a Roller Bearing Block will run faster, and adjustments are much easier. Roller Bearings may not necessarily run as free as ball bearings, but they do offer a significantly higher working load. Ball […]

Advantages and Uses of a Ball Bearing Sailboat Block | Expert Advice

Today we are highlighting ball bearing blocks as part one of our three part discussion on blocks, their characteristics, and uses. So, what is a Ball Bearing Block?  In its simplest form, a ball bearing block it is a housing containing a rolling sheave with balls lining the race on the either side of the sheave.  The balls reduce friction by minimizing bearing surface and roll between the moving surface and the non-moving part of the block. Because of this, lines are able to slide […]

Comparing 75mm Harken Corbo Block Types | Expert Advice

Whether you’re a small boat sailor, or a big boat sailor you know the benefits of having blocks on loaded lines. Harken makes a wide range of blocks to fit all your needs. Three main Harken carbo blocks are the Standard Ball Bearing Block, the Ratchet Block, and the Ratchamatic Block. Why use a ratchet block? Ratchet blocks are great for when you need to control highly loaded sheets with ease. There are two types of Harken ratchet blocks, the standard Ratchet, and the Ratchamatic. […]

How to Lash a Harken T2 Ti-Lite Soft Attach Block | Expert Advice

Here, an APS Rigger shows you how to properly lash a soft attach Harken T2 block using an APS Dyneema Shackle Loop (DSL). Background: Harken’s T2 Soft Attach Blocks represent the first blocks with no fasteners, rivets, or other metal parts – making them incredibly light. These blocks paired with soft shackles will give you lightweight, high performance without compromising strength. Whether you call them soft shackles, softies, or loops – it’s clear that spliced Dyneema shackles are quickly becoming the norm […]

Battle of the Bullet Blocks

40mm Sailboat Block Comparison | Expert Advice

It has been way too long since APS did a proper comparison test of products. (We will get on that shortly, performance racers!) In the meantime, we give it up to Practical Sailor for getting into the nitty gritty of the top ball/roller bearing bullet blocks around. The Ball Bearing Block 40mm Single Tie On and 40mm Single Swivel by Seldén win the honor of Best Choice. It’s necessary to subscribe to Practical Sailor for the full run down. However, […]