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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.
November 19, 2020 1 min read
November 11, 2020 1 min read
November 10, 2020 1 min read
Helpful and fast service
Helpful and fast
Really speedy dispatch after easy buying process.
Great to see minimal packaging used to help the environment.
Great price. We'll informed with delivery updates. Once arrived it was better than I expected. Great cover well made
The breathable poly cotton cover is very good quality heavy material. Fits the boat well.
Delivery very prompt.
The twine was exactly as described and perfect for the job.
Responded immediately and with excellent knowledge and customer service. Fast delivery. Can’t recommend enough!
the product is perfect main sail repaired ready to go
Excellent strong lightweight clips ideal for swapping out flags easily
to be used for trapeze lines - hopefully will withstand UV better than other cheaper versions.....
Ordered and it arrived within 2 days.. Superb personalised service. Would highly recommend this website. Thank you.
Super service, dispatched next day and arrived in time... Fantastic service.
These blocks are a nice balance between quality and weight - I needed something light for jib sheet clew blocks as I didn’t want too much weight hanging on the corner, and it needed to run smoothly (and stay running smoothly) - these fit bill nicely. The sheave is also more protected than other blocks where the edges can get chewed up where they hit the mast.
Used the Dyneema to make soft shackles. Spliced easily but was noticeably “tighter” when pulling through the tails than I found for similar 4mm Dyneema. Glad for the set of Fids. However I ordered the black colour and whilst it was easy to mark up white Dyneema for planning the splices I couldn’t see the pen marks I made on the black rope. I suppose I should have thought of this and got a white marker! Overall very happy.
Easy to order and promptly sent. Used the 4mm Dyneema to make soft shackles - my first attempts - found it easy to splice and it has made some useful and strong shackles.