If you mean the rubber rings that fit onto the top of the winches - I had them on my previous boat, and they were excellent. The idea is that you wind the rope round the winch as usual until you reach the bottom of the ring [3 turns]. As you winch, the excess rope gets 'squeezed' out by the ring.
I'm told they can be difficult to fit in the first place, but after that, they are certainly worth it.
Easy-peasy,brilliant,works well if the sheets are of the correct size to fit the groove,I personally would like to see them made to take a thicker rope. smear with washing up liquid and stretch them on . /forums/images/graemlins/grin.gif /forums/images/graemlins/grin.gif
They are called 'Wincher'. Made in Sweden or somewhere equally cold and I think marketed here by Barton. About £40 a pair. You need to get the correct size to suit the drum of your winch. Fitting is a struggle but use lots of washing up liquid and pre heat the ring in hot water and they will pop on ok.
I fitted mine to some new Barton sheet winches and they have great. However as mentioned fitting them can be a real pain. My au pair discovered me in an advanced state of self bondage using various ropes and straps to stretch the damn thing over the top of the winch!
I fitted some to the halyard winches as an experiment. I didn't expect them to be much use actually, but for £40 I think they are pretty good. Will be getting some more for the primary winches. Yes, they are a bit of a [--word removed--] to fit.
I have a pair of these available.Though packaging is opened, they are unused (a friend bought the wrong size for her boat apparently).
According to labelling, these are size Medium for drum diameter 73-80mm, and rope size 10-12mm. Colour grey and in perfect condition.
PM me if interested.
I have just bought some for my new acquisition, fitted to Lewmar 30s, £35 or so I think from Foxes, beats £800 plus for a pair of Self tailers,.
I was prepared to be disappointed, but find that they do work pretty well.
Only slight snag is because of the way in which the turns jam up against the lower rim of the rubber gizmo, it is not so easy to release as a conventional winch.
Fine for cruising, but would be a drawback when racing as it would definitely slow down the tacking process?
I agree with comments re fitting. Hot water plus washing up liquid, and a certain amount of swearing, did the trick!!!
If fitting to Lewmar winches, take off the top fitting, and fit from below onto top fitting , piece of cake, no washing up liquid ar elbow grease needed.