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Symmetrical Spinnaker sheeting systems and stuff

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    Posted: 23 Dec 14 at 1:24am
Originally posted by timeonthewater

Hi Gareth, the chafe was a loading point on the run of the thin musketeer line, where the pole line was gong around the fitting an irregular manner, rather than the chosen route around the sheaves.
 Started life as a burr, and with a few slow two part hoists of the pole, quickly came a trap and wear point for the thin line to fall into and start to melt incrementally down the side of the cheek wall. Change of cheek wall from plastic to Harken black alloy did the trick.



Thanks, as I mentioned earlier I built my own and though mine is like a conventional spiro fitting I fear that I will get the same chafe issues
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Post Options Post Options   Quote NHRC Quote  Post ReplyReply Direct Link To This Post Posted: 23 Dec 14 at 1:22am
I was chatting with mike holt about the positioning on SA's dinghy forum a while back.

I have a good idea and it's pretty simple to work out.

Looking forward trying. I have just acquired the blocks I need for it
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Post Options Post Options   Quote timeonthewater Quote  Post ReplyReply Direct Link To This Post Posted: 20 Dec 14 at 9:26am
Calculating where on the Merlin the correct spot for the guy to run to on the curved deck would be the tricky part, still maintaining the mechanical advantage afforded by the pole snodger.  
The guy has a 3:1 on it led to the helm mid boat, with a fly-away system of course.  Get it right and you won't have to experience sub 10 stone Merlin crew struggling to put on the pole, reach to reach ever again
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Post Options Post Options   Quote timeonthewater Quote  Post ReplyReply Direct Link To This Post Posted: 20 Dec 14 at 9:19am
Hi Gareth, the chafe was a loading point on the run of the thin musketeer line, where the pole line was gong around the fitting an irregular manner, rather than the chosen route around the sheaves.
 Started life as a burr, and with a few slow two part hoists of the pole, quickly came a trap and wear point for the thin line to fall into and start to melt incrementally down the side of the cheek wall. Change of cheek wall from plastic to Harken black alloy did the trick.

Too many toys..not enough time
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Post Options Post Options   Quote NHRC Quote  Post ReplyReply Direct Link To This Post Posted: 19 Dec 14 at 9:22am
Originally posted by timeonthewater


We've replaced the carbon cheeks on the Waterat mast spiro blocks as they wear quickly due to the change of rope angle when pulling out the pole. 


Hi mate

Where were you getting the chafe and what did it look like?
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Post Options Post Options   Quote timeonthewater Quote  Post ReplyReply Direct Link To This Post Posted: 19 Dec 14 at 8:43am
The guy and sheet system on the 505 is awesome, a great advantage as the kite is always under control and doesn't collapse in the gybes unless you if you wish it to). A clear improvement on the system on the Merlin, as even with the rock star crew, the kite collapses from reach to reach gybing
Needless to say, both systems have to have time spent on them and be properly set up with elastic tension to enable good quick pole recoil when releasing the musketeer cleat at the base of the mast, smooth splicing on the skinny dyneema, and scrutinising of the friction in the system.  

We've replaced the carbon cheeks on the Waterat mast spiro blocks as they wear quickly due to the change of rope angle when pulling out the pole. 

A bimbler's joy.  If you don't find the pleasure in these things, you will be hard pressed to get the guy and sheet system to work without putting in some serious hours. 
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Post Options Post Options   Quote winging it Quote  Post ReplyReply Direct Link To This Post Posted: 18 Dec 14 at 1:41pm
Er Indoors is an Ergonomist by trade, which is all about designing the best systems for the people who will end up using them.  Next week she and I will be going down to Poole to fit out our classic 14 from scratch, and I'm expecting her training and input to be far more important than much I can say. 

One of the smallest changes I made to the D One was to alter the traveller adjustment take off points.  Simply moved so the line was better and the pull a more natural action;  far more ergonomic and so much easier to use. 
the same, but different...

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Post Options Post Options   Quote NHRC Quote  Post ReplyReply Direct Link To This Post Posted: 18 Dec 14 at 7:58am
Yes leading controls to the right person to suit your boat handling is vital...

Are all Larks twinning line boats???
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Post Options Post Options   Quote timeintheboat Quote  Post ReplyReply Direct Link To This Post Posted: 15 Dec 14 at 1:04pm
Twinning lines definitely. In our Lark the twinners led back to the helm as was pole height and hoist, just leaving the crew to sort out the pole and kite.
Like some other things - sailing is more enjoyable when you do it with someone else
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Post Options Post Options   Quote Null Quote  Post ReplyReply Direct Link To This Post Posted: 15 Dec 14 at 7:50am
Thing is many people are critical of a sheet guy, launching twin pole system having not seen it in action properly.  The 505's are some of the best sailors in the world, they have all but swapped so to me the advantage is clear.  Where I would stay clear is if you class do not allow carbon poles as two hulking great alloy poles on an alloy boom will have an effect on sail shape and gybe handling.
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