Lazyjack adjustment on Hanse sail cover
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Forum Name: 400
Forum Description: 400 Hints, Tips and News
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Topic: Lazyjack adjustment on Hanse sail cover
Posted By: Richard M
Subject: Lazyjack adjustment on Hanse sail cover
Date Posted: 11 November 2007 at 23:50
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Has anyone managed to perfect a way to adjust the lazy-jacks holding up the mainsail cover on the current model range? I've been trying to get the internal battens to be (broadly) parallel with the boom whether the lazy jacks are slackened off (ie when mainsail is hoist and we are sailing) or when tight (ie when the sail is lowered and flaked on to the boom).
Whatever we do it seems that that aft end of the sail cover droops down when the lazy jacks are released. I'm sure that there is an elegant algebraic solution to this - but I've yet to find it!
Incidentally we found that the original cord (and blocks) supplied with the sail cover weren't really adequate - one of the lazy jack lines broke quite early on - and so changed to stronger cord and bigger blocks. One problem solved - but another generated!
I'm also wondering about adding a piece of shockcord to the lazyjack "halyards" - ie the ends that run down from the blocks to the cleats on the mast.
As ever all suggestions gratefully received.
Many thanks
Richard
------------- Richard M (S/Y BrightStar - H 455 #90; ex S/Y Providence - H 400e #290) |
Replies:
Posted By: ueitugò
Date Posted: 12 November 2007 at 00:53
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Hi Richard! I'm using a quite different setup for my lazy jack. You can see in the picture how it is arranged. The first (bow) line is tied to the lazy bag with a knot that can be easily untied in order to adjust the overall tension of the lazy jack. At the opposite end the first line has a ring. The second line passes trough that ring, and it has another ring at its end. The third (stern) line passes through this ring and it is tied to the lazy bag at two different points. This way the forces along the lines are not evenly distributed, as they decrease from bow to stern (see the length of the blue arrows). This roughly matches the decreasing weight of the main sail (heavier close to the mast, very light at the opposite end. BTW, when I first saw the lazy jack lines, which are pretty elastic, I decided to change them when possible and to use some stiffer ones. However, I soon realized that slightly elastic lines probably work better than stiffer ones, so I'm sticking with them. Just my 2 cents! All the best, Michele 
------------- -------------------------------- Ueitugò - Hanse 400e #310 |
Posted By: silversailor
Date Posted: 12 November 2007 at 22:18
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Michele, On my 370, I have the same setup as you do, except, the 1st line is closer to the mast. However, with the lines tensioned, I am unable to put the front "bra" on. I notice that you have yours sqeezed between the 1st line and the mast. Does everyone loosen the tension after the sail is dropped and then add the "bra"? That seems like more work than should be required. Next Spring, I will upgrade the small blocks on the upper speader that are used for the lazy jack lines and I may add a small block on my mast just above the height of the sail drop. Then the 1st line will be close enough to the mast (even when under tension) that I can install the "bra." Any other suggestions would be appreciated. ------------- Silversailor South Haven, MI USA S/V Legacy 2010 Andrews 28 |
Posted By: ueitugò
Date Posted: 12 November 2007 at 22:44
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Silversailor, there's actually plenty of space between my first lazy jack line and the mast, so the "bra" is not squeezed at all (see the picture). However, I guess this thread about ...squeezed bras - with pictures! - is going to be deleted by the forum administrator...  Best, Michele  ------------- -------------------------------- Ueitugò - Hanse 400e #310 |
Posted By: Rubato
Date Posted: 13 November 2007 at 00:16
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SS, Mine is identical to Michele's shown above, it has plenty of room. Sounds like either some of the "bras" are bigger or the lazyjack position on the cover was changed (likely the latter).
Steve
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Posted By: silversailor
Date Posted: 13 November 2007 at 17:53
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Steve, I think you are correct. My forward lazyjack line is at the most forward point of the saildrop, rather close to the mast.
------------- Silversailor South Haven, MI USA S/V Legacy 2010 Andrews 28 |
Posted By: Richard M
Date Posted: 18 November 2007 at 11:24
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Thankyou Michele, Steve & Silversailor for your replies. All most helpful.
Special thanks to you Michele for providing such a clear diagram of your lazyjack arrangement. I'm going to try a modified version of this.
Best wishes
Richard ------------- Richard M (S/Y BrightStar - H 455 #90; ex S/Y Providence - H 400e #290) |
Posted By: Brightside
Date Posted: 18 November 2007 at 23:36
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Hi Sorry for the poor graphic.
Original lazyjacks on our 371 were rigged as in Ueitugò photo of his 400e I re-rigged the lazyjacks this year to the layout below. The result is the aft end of the sailbag does not droop down. A disadvantage is I need to apply more force to adjust the lazyjack from the aft fixing point, above the cockpit. .O. . . . . . . . . . . . . . O . . . . . . . . . . O . . . . . . . . . . . . . . . . . --------------------- --------------------- Regards Mike |