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Boom preventer |
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kuling73 
Sub Lieutenant 
Joined: 22 November 2014 Location: Gothenburg Status: Offline Points: 14 |
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 Topic: Boom preventerPosted: 15 March 2023 at 05:47 |
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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. |
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/Best regards Håkan. Hanse 342 #477
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Dogscout
Commander 
Joined: 10 July 2017 Location: Wandering About Status: Offline Points: 132 |
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Posted: 12 March 2023 at 22:57 |
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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.
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Adventure awaits
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Arcadia
Rear Admiral 
Joined: 27 November 2017 Location: Sag Harbor, USA Status: Offline Points: 533 |
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Posted: 11 March 2023 at 14:11 |
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I guess a bit of movement is not a problem but a wild swing across the deck would be.
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Leon / ARCADIA
2018 Hanse 588 Sag Harbor, NY |
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samuel
Admiral of the Fleet 
Joined: 26 December 2004 Location: United Kingdom Status: Offline Points: 2646 |
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Posted: 11 March 2023 at 12:55 |
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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 |
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Daydream Believer- Hanse 311- No GBR9917T- Bradwell Essex
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kuling73
Sub Lieutenant
Joined: 22 November 2014 Location: Gothenburg Status: Offline Points: 14 |
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Posted: 10 March 2023 at 14:04 |
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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 |
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/Best regards Håkan. Hanse 342 #477
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samuel
Admiral of the Fleet
Joined: 26 December 2004 Location: United Kingdom Status: Offline Points: 2646 |
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Posted: 10 March 2023 at 13:24 |
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
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Daydream Believer- Hanse 311- No GBR9917T- Bradwell Essex
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kuling73
Sub Lieutenant
Joined: 22 November 2014 Location: Gothenburg Status: Offline Points: 14 |
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Posted: 10 March 2023 at 09:27 |
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Hi,
I use an ordinary Super 8 with dynema 8mm line and low friction rings. It works very well. Total cost about 90 euro.  Edited by kuling73 - 10 March 2023 at 13:00 |
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/Best regards Håkan. Hanse 342 #477
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surfjoan
Lieutenant 
Joined: 27 August 2019 Status: Offline Points: 22 |
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Posted: 10 March 2023 at 08:40 |
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I am thinking of installing a boom brake. Has anone done that on a 341 or 342? it requires 2 control lines but apart from that it seems like a good product to make uncontrolled gybes more controlled..
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Dogscout
Commander
Joined: 10 July 2017 Location: Wandering About Status: Offline Points: 132 |
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Posted: 18 February 2023 at 18:32 |
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I agree fully after having to go forward in heavy seas to swap sides n the preventer. A walder boom brake makes life so much easier.
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Adventure awaits
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Ratbasher
Commadore 
Joined: 31 May 2017 Location: Cyprus Status: Offline Points: 402 |
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Posted: 18 February 2023 at 16:01 |
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I've never been comfortable with the boom held rigidly in place, especially in stronger winds and higher seas. Prefer a 'boom brake' rigged from mid-boom out to blocks rigged on lines from the midships cleats then back to the cockpit.
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H400 (2008) 'Wight Leopard', post-refit sea trials, south coast UK
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kuling73 wrote: