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New Jib

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paulburton View Drop Down
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Post Options Post Options   Quote paulburton Quote  Post ReplyReply Direct Link To This Post Topic: New Jib
    Posted: 31 Mar 10 at 7:29pm

I have bought a second hand jib that is brand new for my Cherub. I didn't pay much but I am struggling to fit it.

It does NOT have a luff wire but it has a zip ! My boat does not have a forestay !

I would usualy pull the jib up pull on the highfield lever and relase the trapeze wire that I use to hold the mast up when the jib is not up !

Is the sail itself strong enough to hold the mast up ? (I doubt it)

Do I fit a fore stay and zip the sail sail on and adjust the highfield for the sail luff tension ?

Do I get a luff wire made up , zip it into the sail then lace the sail to the luff wire ?

 

l

RS Vareo
Cherub
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ham4sand View Drop Down
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Post Options Post Options   Quote ham4sand Quote  Post ReplyReply Direct Link To This Post Posted: 31 Mar 10 at 7:33pm
get a forestay and get it tight enough for you, then attach
the head of the jib to the end of the halyard, zip it onto
the forestay and use it to tension the luff. Make sure you
dont put more tension on the jib than the forestay though.
just a question, where did you get it? (this is what i did
on an old national 12 so no idea if it will work on your
boat( prob depends howmuch tension you run in your rig))
John Hamilton
cherub 2645 - cheese before bedtime
cherub 3209 - anatidaephobia
laser 176847 - kiss this
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ham4sand View Drop Down
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Post Options Post Options   Quote ham4sand Quote  Post ReplyReply Direct Link To This Post Posted: 31 Mar 10 at 7:35pm
also, you could get a luff wire made up for the jib, zip it
in, put a hard eye on each end and attach like you used to
John Hamilton
cherub 2645 - cheese before bedtime
cherub 3209 - anatidaephobia
laser 176847 - kiss this
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ham4sand View Drop Down
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Post Options Post Options   Quote ham4sand Quote  Post ReplyReply Direct Link To This Post Posted: 31 Mar 10 at 7:36pm
basically both your ideas will work and the jib will not
hold up the rig.

sorry for multiple posts the edit button seems to have
dissapeared
John Hamilton
cherub 2645 - cheese before bedtime
cherub 3209 - anatidaephobia
laser 176847 - kiss this
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Granite View Drop Down
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Post Options Post Options   Quote Granite Quote  Post ReplyReply Direct Link To This Post Posted: 31 Mar 10 at 9:30pm
It depends on if there is a point on the mast strong enough to attach a forestay that takes all the rig loads.

If there is not then it would probably be esiest to get a luff wire made up and use the haliyard and hyfeild leaver as before. Just put the wire in the luff pocket and tie the jib to the luff wire at teh top and adjust the tention with the lashing at the bottom.

The way most zip luff jibs are setup is to have a forestay taking all the rig load attached to the mast with a T-terminal just like the shrouds, the rig tention is pulled on at the bottom with a boat breaker and you use a chain plate for the adjustment.

A light haliyard is used to pull the jib up.

The advantage of doing this is that you can get rid of the weight of the heavy wire haliard up the mast, and also it reduces the compresion in the mast..




If it doesn't break it's too heavy; if it does it wasn't built right
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alstorer View Drop Down
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Post Options Post Options   Quote alstorer Quote  Post ReplyReply Direct Link To This Post Posted: 01 Apr 10 at 8:56am
Also means you can do a lot of your rig tuning without the jib up.
-_
Al
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Jack Sparrow View Drop Down
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Post Options Post Options   Quote Jack Sparrow Quote  Post ReplyReply Direct Link To This Post Posted: 01 Apr 10 at 11:28am
I'm guessing at how you have your mast set up from what you describe but
you could do this* if you want to keep the lever. Either connect an old jib
luff wire the same length as your new jib to the existing system with the
addition of a shackle and block. Or get a new one made with a crimped on
block. You could also do this with SK75 / PBO wire rope. Then haul the new
jib up the forstay on the new jib halyard running through the block at the
head and down inside the zip luff. Either tie off at the foot tack or turn it
along the fore deck to a cleat, for on the water jib cunningham.

* pic didn't work so here is a link:
Flickr
LINK


Edited by Jack Sparrow
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