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Slipping Main Halyard

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djdhi View Drop Down
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Post Options Post Options   Quote djdhi Quote  Post ReplyReply Direct Link To This Post Topic: Slipping Main Halyard
    Posted: 21 Apr 15 at 6:55pm
I don't know what loads your mainsail take s but I solved this problem by going back to basic seamanship.  Fit an old-fashioned horned cleat. Swig up the main with the kicker,cunningham and outhaul off, take a round turn ,a figure of eight, and finish with a locking turn. You could make a mock up horizantally on a scrap piece of timber. I'll think you will find it won't slip.
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NickA View Drop Down
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Post Options Post Options   Quote NickA Quote  Post ReplyReply Direct Link To This Post Posted: 21 Apr 15 at 9:25pm
I'm going to take a look tomorrow evening and see what the main halyard could be tied off on!  The cleat evidently isn't man enough.  A horned cleat would probably pull off the mast as soon as the kicker went on!

Another idea is to have a D12 halyard with a loop in the end, then put a hook through said loop and tension it with a 2:1 - halving the load on the cleat.  Which is what my V3000 has as a jib halyard - and holds 300lbs rig tension in a v-cleat with no issues.

Btw: most Javs have a simple rope main halyard and it's common for the halyard sheath to strip off the core at some point, mostly 'cause people are too tight to move the halyard along an inch every few weeks.  The Jib halyard, which controls the mast rake is indeed wire and attached to a multi-purchase system.  Rig tension goes on via the shrouds through lots of blocks and rope (D12 on a modern one).  Kicker is 16:1 or 24:1 and cunningham at least 4:1.  So lots of force pulling the main down.

I've never seen a Jav with any external halyards - tho it seems a good idea.  A cleat at the top would also reduce compression on the mast.  Probably banned by class rules, in case it makes the boat too modern ;¬)
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JohnJack View Drop Down
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Post Options Post Options   Quote JohnJack Quote  Post ReplyReply Direct Link To This Post Posted: 01 May 15 at 4:40pm
Originally posted by NickA

The mast and hence cleat are pretty new (15 months) and the halyard is routed so that it doesn't run through the cleat when hoisting.  Shouldn't have worn out yet.

My first boat (a laser 2) had a hook rack for the jib halyard and it was a right pain in the bum - but that was because the halyard also set the rig tension - I could never get enough rig tension on.  Not an issue on the main of a boat with independent rake and rig tension adjusters.

Various knotty solutions will work for now - JohnJack's slipknot under the cleat appeals, and yes a picture would be a help!  Should think it's essential with a D12 halyard; didn't think D12 would cleat at all.


Like this (not our boat so not a D12 hal but otherwise same diff)
 


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JimC View Drop Down
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Post Options Post Options   Quote JimC Quote  Post ReplyReply Direct Link To This Post Posted: 01 May 15 at 4:47pm
Originally posted by NickA

I've never seen a Jav with any external halyards - tho it seems a good idea.  A cleat at the top would also reduce compression on the mast.  Probably banned by class rules, in case it makes the boat too modern


The aerodynamic drag is the usual objection. External halyards are really only viable on classes where everyone has to have one.
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