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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.
New jib sheets are good to hold, do not twist up and hold well in the cam cleats.
Really good kicker at a reasonable price, delivered well packaged up and quickly
I made a mistake on my order and it was put right at zero cost to me ! Amazing !
I’ll certainly be back
Product exactly what I wanted
Good cover, made of a thick tough material and fits the boat well. The drawstring really helps tighten it around the boat and keep the rain and dirt out! There is enough extra space under it to fit your mast and boom on a deck tidy under it. Looks great in the club berths!
Very happy with the complete set of wheels with pins & washers - all in excellent condition & arrived as scheduled. Thank you.
Works well, towing noise considerably reduced and no further damage to underside of gunwales.
These are a revelation compared to the silly key ring type pin. So easy to use making rigging that bit quicker and easier! Great service as always from Sailing Chandlery A*
Excellent service and prompt delivery.
Best on the market!
Our son broke the sheave in his ILCA traveller block. I ordered the full set, which arrived the next day - absolutely brilliant service, sensible price and a quality product
Bought these to fit to the under boom sliders on a Super Spars boom to use for the main sheet. Block is compact and fits close to the underside of the boom keeping main sheet as close to boom as possible.
Quickly delivered from Sailing Chandlery.
I’d not realised that my previous boom was a problem until it became rather banana shaped. The Holt replacement is just the ticket and was delivered promptly. Good value for the money.
Excellent product and prompt delivery
I bought these for summer dinghy sailing as I found my short fingered leather gloves were getting uncomfortable and I needed some protection for the tips of my fingers. I have only worn them once but was very impressed. They fitted nicely, didn’t get soggy and I didn’t notice any discomfort.
Easy to put on and adjust and fits well. I went for a larger size than the size chart suggested as I was the top end of the medium measurement with a wetsuit and spray top on adding a bit extra. The only thing that I feel lets it down is the packing it comes in, I would have liked something like the breathable bag the Rooster buoyancy aids come in.
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