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#1 2010-01-14 02:01:22

ALAN FORD
Member

Sister clips

How do you prefer to join the headsail ( and spin ) clew(s) to the sheets? I'm from a class that uses sister clips.......light, simple and fast to use. but the Etchell's foresail is a blade. Perhaps those are not strong enough for our large ( 155%) genoas?  And ease when changing sails becomes important.
I need your ideas please.
Thanks
Alan of SMOKE 1984 Mk V 002


Alan of SMOKE 1984 Mk V 002

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#2 2010-01-14 03:22:13

Steve Reid
Member

Re: Sister clips

Allen:
On Still Knot Working, and indead any boat with an overlapping genoa that I have ever sailed on, we tie the genoa sheets on with a bowline.
The last thing you want is some large piece of metal flaining around on the foredeck every time you tack the boat. For the spinnaker we use snap shakels. You ned find the lightest ones you can that will have sufficient strength for the load of the spinnnaker, especially when it collapses and refills.
Hope that helps.


Steve Reid
Still Knot Working

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#3 2010-01-14 05:58:40

ALAN FORD
Member

Re: Sister clips

Thanks Steve. that's what I hoped to hear. In the few times I sailed "Smoke" after bringing her to Bronte I had the sheets tied to the RF genoa clew with a bowline, so that was a good ( and safe ) guess.
Snap shackles come in a dozen shapes and sizes, and most of the good ones start at 2500 lbs stress before deformation. Does that sound OK for the sudden SNAP as the spin starts to draw in a strong breeze, or more than is needed? I can't find any real number for this load, but an Etchell's spin is comparable to ours, and they survive with sister clips which have far lower numbers as their "tensile strength". The sister clip also has the advantage of lower weight in a light breeze.

Alan of SMOKE 1984 Mk V 002


Alan of SMOKE 1984 Mk V 002

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#4 2010-01-14 06:12:10

Steve Reid
Member

Re: Sister clips

Alan, I use Wichard snap shakles, the smallest they make and they have worked fine for the past 5 years and stood up to many broaches.
I also use a set of light air sheets for when the wind is almost noexistant and we just tie them on with bowlines, seems to work fine, they are 1/8th braided dacron.
Steve

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#5 2010-01-14 12:26:43

ALAN FORD
Member

Re: Sister clips

That's great guidance Steve, again thanks. This is becoming a constructive Winter for me and "Smoke", allowing me to track down much needed stuff.

Alan of SMOKE 1984 Mk V 002


Alan of SMOKE 1984 Mk V 002

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#6 2010-01-15 01:05:21

davidww1
Member

Re: Sister clips

For what it's worth, Kat's Paw uses Lewmar plastic clips (that are sold as a pair in red and green) in all winds. The time I sailed with them I expected them to blow up at any moment, but they didn't. They're very light.

David Weatherston
Towser, Toronto
C&C 27 Mk IV


David Weatherston
Towser, Toronto
C&C 27 Mk IV

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#7 2010-01-15 09:52:14

carriden
Member

Re: Sister clips

It seems counter-intuitive, but when I checked the weight of the plastic shackles against the weight of the small, fixed-bail Wichard snap shackles the difference was only a couple of grams.  What I did find from experience was that it was easy for the pin on the plastic shackles to snap at the end with the ring, which causes the shackle pin to disappear and renders the shackle useless.  I used to use them on my light-air lines but I gave them up and returned to the Wichard units.

Alan, judging from the class specs, Etchells have a considerably smaller spinnaker than ours.  I certainly would not be inclined to trust sister clips for the loads on our spinnakers, although I was happy to use them when I had a Shark.
Marcus from Carriden

Mk III, Hull #847
Oakville, Ontario


Marcus Opitz,
Formerly from Carriden, Mk III, Hull #847,
now skippering "Everdina," a 1975 Ontario 32

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