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November 19, 2020 2 min read
Harken ratchet blocks start at a 40mm sheave size and run up to 75mm sheave size for use on a majority of dinghies and catamarans.
There are four types of Harken ratchet block:
All of these ratchet blocks come in slightly different forms.
The T2 soft attach ratchet blocks are popular because they are lightweight with the flexibility of being able to be lashed or spliced anywhere on the boat. The T2 only comes as a ratchamatic which is an automatic ratchet block. As soon as pressure it put onto the block from the attachment point the ratchet engages, when there is no pressure it releases and doesn't engage.
The carbo blocks are popular where the block isn't going to need to move, or where it will sit and happily do the job of making your sheeting easier. This is the standard block issued for a Laser mainsheet block for example, it sits in the middle of the deck with a spring underneath. Carbo blocks are attached using a shackle.
These are available with an on/off switch in the centre, or as an automatic ratchet which can be adjusted using the allen key provided with the block.
The power3 ratchets are the latest blocks from Harken.
Available as a carbo on/off, automatic carbo and T2 these blocks have two different sheave designs which are more aggressive and grip the rope to provide either 1.5x or 2x the grip you would get from a standard block.
You can see all of the ratchet blocks we sell at Sailing Chandlery using the link below. Make sure you have a look at the red versions to add a little bit of extra colour to your boat.
Explore the range of Harken Ratchet Blocks at Sailing Chandlery
If you have any questions about any of the blocks we sell at Sailing Chandlery then get in touch with our friendly team who are always happy to help.
Good rope for low load jobs - easy to splice, smooth and flexible.
Perfectly layed out numbers
WIP have really pulled out all the stops on this impact vest to suit all forms of hi-performance watersports. Feels great on, good snug fit - no restrictions to movement and doesn't impact on trapezing like a lot of buoyancy aids. A very well made, high quality vest that has everything you need to keep you safe on the water.
Purchased for my old Albacore sailing dinghy. This is a well made quality cover with straps and clips that look like they’ll last many years. I no longer have to bail out the boat before sailing!
Found the staff at Sailing Chandlery most helpful to a no-yachtsman with flags to fly to cheer the day.
It may seem strange but my husband purchased this item as he was making me some wooden bunting for our outside space. The range of colours was fab and the rope is ideal for our needs.
Easy to order and arrived quickly….great service
Made with good quality material and sizing is accurate. Comfortable to wear with plenty of secure pocket space. Buoyancy aid arrived promptly and securely wrapped.
Waterproof, spacious and different ways to carry it
Perfect arrived on time....
nothing to fault it, it’s got ce rating and worked great on a trip down to weymouth
Order placed and boom received in time to get back on the water, class legal, packed accurately in a bulletproof bag with bubble wrap and extra foam to protect blocks and fittings.
Any defect? Nope!
Thanks all Sailing Chandlery’s staff
Good sized, well made waterproof bag, ideal for sailing
Easy to fit and great feel.
Good quality with novel scull and crossbones adhesive tabs.
I ordered a rope bag for learning knots this item arrived quickly and is much appreciated
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