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mast head sheave issue
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winging it View Drop Down
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    Posted: 11 Jul 13 at 10:42am
ah!  I have the penny washers! Good thinking about the bolt!  Thumbs Up
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Ian29937 View Drop Down
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Posts: 409 		Post Options Post Options   Quote Ian29937 Quote  Post ReplyReply Direct Link To This Post Posted: 11 Jul 13 at 10:38am
Try using a bolt rather than a pin as this could provide more support to the sides of the sheave stopping them from deforming and allowing the wire to go down the side.  You could even add some penny washers......
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winging it View Drop Down
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Posts: 3958 		Post Options Post Options   Quote winging it Quote  Post ReplyReply Direct Link To This Post Posted: 10 Jul 13 at 10:07pm
the sheave is the right size, but the halyard wire is really thin.  Maybe I should change that first?
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PeterG View Drop Down
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Posts: 822 		Post Options Post Options   Quote PeterG Quote  Post ReplyReply Direct Link To This Post Posted: 10 Jul 13 at 8:58pm
Sound like the slot in the fitting is too wide? Or the sheave is too narrow? (OK that's probably bleedin' obvious!). It's a problem I've never had on both a metal and  carbon mast with a wire halyard. How hard would it be to replace the whole fitting? Pretty easy I remember on a metal one, but no experience on a carbon stick. A rope halyard might help a little, but only if you use a diameter larger than the wire - then again it might just jam too!.

Edited by PeterG - 10 Jul 13 at 8:58pm
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winging it View Drop Down
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Posts: 3958 		Post Options Post Options   Quote winging it Quote  Post ReplyReply Direct Link To This Post Posted: 10 Jul 13 at 7:52pm
the wire halyard on my carbon contender mast keeps slipping down the side of the sheave becoming so trapped it's impossible to move it.  Yesterday I replaced the plastic sheavew with a new one but the same thing happened straight away.  I have a metal sheave, is that the answer?  The masthead fitting itself is plastic.  Should I give up and switch to a rope halyard instead?  If so I will have to fit a cleat and the rack for the wire will be in the way.

What is the answer?
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