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Boom preventer
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samuel View Drop Down
Admiral of the Fleet
Admiral of the Fleet


Joined: 26 December 2004
Location: United Kingdom
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Points: 2671 		Post Options Post Options   Thanks (0) Thanks(0)   Quote samuel Quote  Post ReplyReply Direct Link To This Post Posted: 10 March 2023 at 13:24
Originally posted by kuling73 kuling73 wrote:

Hi, 
I use an ordinary Super 8 with dynema 8mm line and low friction rings. It works very well. 


Total cost about 90 euro.




Could you sketch how you rig the line through that please; because I cannot see what stops the line jamming completely. So obviously I am missing how it works
Daydream Believer- Hanse 311- No GBR9917T- Bradwell Essex
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kuling73 View Drop Down
Sub Lieutenant
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Joined: 22 November 2014
Location: Gothenburg
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Points: 14 		Post Options Post Options   Thanks (0) Thanks(0)   Quote kuling73 Quote  Post ReplyReply Direct Link To This Post Posted: 10 March 2023 at 14:04
I tighten it up with the winch. I use about 14 meters Dyneema 8mm line.

Additional pictures:


Edited by kuling73 - 10 March 2023 at 14:15
/Best regards Håkan. Hanse 342 #477
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samuel View Drop Down
Admiral of the Fleet
Admiral of the Fleet


Joined: 26 December 2004
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Points: 2671 		Post Options Post Options   Thanks (0) Thanks(0)   Quote samuel Quote  Post ReplyReply Direct Link To This Post Posted: 11 March 2023 at 12:55
The anchor point on the bottom of the ring to the fixing point on the boom is quite a long way. ie several inches. So does the boom swing from side to side a bit, even though the bottom of the ring is retained?
Other systems seem to be similarly fastened & it does make me wonder how the boom can be rigidly held.
Always strikes me that the preventer line should go right up to the underside of the boom. Not to a point some way below it.



Edited by samuel - 11 March 2023 at 12:57
Daydream Believer- Hanse 311- No GBR9917T- Bradwell Essex
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Arcadia View Drop Down
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Joined: 27 November 2017
Location: Sag Harbor, USA
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Points: 585 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Arcadia Quote  Post ReplyReply Direct Link To This Post Posted: 11 March 2023 at 14:11
I guess a bit of movement is not a problem but a wild swing across the deck would be.
Leon / ARCADIA
2018 Hanse 588
Sag Harbor, NY
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Dogscout View Drop Down
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Joined: 10 July 2017
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Points: 136 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Dogscout Quote  Post ReplyReply Direct Link To This Post Posted: 12 March 2023 at 22:57
I like a boom brake much more than rigging a preventer.  A Walder boom brake is bullet proof and you do not have to go forward when you tack.  More expensive than the figure 8 but its built for this.  I really don't know at what sail area it would too great for the figure 8 but I do know that Wichard states that the Gybe Easy is good for mainsails up to 40 sq. meters.  My 430e has a main sail area of 63 sq. meters.  Im being conservative by not using a figure 8 but thats okay in this situation.
Adventure awaits
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kuling73 View Drop Down
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Joined: 22 November 2014
Location: Gothenburg
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Points: 14 		Post Options Post Options   Thanks (0) Thanks(0)   Quote kuling73 Quote  Post ReplyReply Direct Link To This Post Posted: 15 March 2023 at 05:47
Hi,
thats right, you should not use this on bigger boats. I got the tip from one that using this on a X-yacht 382 and it works well on that boat to. The mainsail on that boat is also about 35 m².
/Best regards Håkan. Hanse 342 #477
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