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Mizzen traveller
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Danny and Yvonne SIMMS
Hi Bill,
Thanks for your input.
I think it is helpful to retain the word vang for the control running to the base of the mast and preventer to the rail attachment. Even though it does at the rail, vang like, control boom height it does prevent the slap bang when running free in light winds and a seaway which is the main purpose for me as a preventer. Of course the accidental gybe prevention is important as well. Having said all that Bill, I concur with you that a method of controlling it from the cockpit would be a huge advantage and it has been excessing my mind as i am doing more solo sailing now. I will experiment. The over riding important factor is not to load the booms too far forward.
Kind Regards
Danny
SM 299
Ocean Pearl
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Danny and Yvonne SIMMS
Hi Nick, I am just passing on wisdom given by others. I agree with your definition of a preventer. I do not agree that the two systems were intended by Amel to be used as vangs as well. On the SM anyway.
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There was recent discussion in the forum about a SM that fractured its boom and it appeared they may have been loading it from a point too far forward and in particular applying pressure with a purchased vang. The sm was provided with a passive fixed length nylon vang. It was believed the boom was not designed to take the load of a purchased vang. Ex racers would be inclined to overload it too. The tang at the mast base is fixed. If you look you will see that when a vang is loaded up hard on the wind and then the sheet is eased without releasing the vang the load on the vang would increase considerably. As I said, I am passing on wisdom received here as well as my own observations. Kind Regards Danny SM 299 Ocean Pearl On 14/12/2022 22:14 NZDT Nick Newington via groups.io <ngtnewington@...> wrote: |
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Bill Kinney
One of the things I have been experimenting with is a different way of controlling the vangs for both the main and mizzen. (I will call them "vangs" because i use them to control the sail twist when the boom is out past the range of the traveler, and do not count on them to absorb the forces of an accidental gybe.)
Using a single line from the vang attachment point on the sail, and a single block on the rail at the normal vang attachment point. For the mizzen vang, the line runs from the boom, to the rail block, to the cleat on the after deck near the cockpit. This sail is small enough it is easily trimmed by hand, no mechanical advantage is needed, loads are quite low. For the main, a single line from the boom, to the block on the rail, to the small winch in the cockpit. This has given me the ability to fully control the sails from the cockpit, including the ability to release and ease the vangs in the event of backwinding from a gybe. Loads on the boom and rail are nearly identical to the block and tackle arrangement Amel supplied. So far, the only downside I have found is the extra lines crossing the side deck that can be a tripping danger, and the need to do something different if using the main and the mizzen staysail at the same time. Bill Kinney SM160, Harmonie Le Marin, Martinique http://www.cruisingconsulting.com |
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Hi Danny,
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You raise an important point on loading booms. Yes it is a “preventer” as well as a “kicker” or “boom vang” and works well to locate the boom down and out as required. Doing both tasks in one. The nomenclature is what it is. I call a “preventer” the line used to hold a boom forward to prevent it gybing accidentally. The mizzen is not a large sail. The loads on the preventer/vang are not great. I have no fears of damaging the mizzen boom with the preventer. It’s attachment point is further aft proportionally than the main boom kicker point. However when I go back to the boat and sail, I will cast a careful eye on the loads “vanging” the mizzen. In contrast with the mainsail boom where I agree that “preventing” the boom from its kicker attachment could overload the boom. The proper point being further aft. The mainsail has a long track that is controlled easily from the cockpit. When running free or well off the wind the mainsail still needs to be powered up and prevented. This powering up can put a lot of load on the boom. So it must be carefully considered…as to where from. My best position is from the main boom forward sheeting eye, probably about midway along the boom. Nick Amelia AML54-019 Leros Gr On 14 Dec 2022, at 01:21, Danny and Yvonne SIMMS <simms@...> wrote: |
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Danny and Yvonne SIMMS
As did the SM. Nicely made of laid nylon to give stretch.
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Regards Danny On 14/12/2022 09:32 NZDT Courtney Gorman via groups.io <itsfun1@...> wrote: |
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Yes it is a preventer some 54’s came with 2 a larger one for the main and smaller one for the Mizzen
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On Dec 13, 2022, at 3:10 PM, Danny and Yvonne SIMMS <simms@...> wrote: |
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Danny and Yvonne SIMMS
Hi Nick, I do not claim any expertise on the 54 but I think the "vang" you are using on the main boom is actually properly used as a preventer as it is on the SM. Some recent posts have identified using it as a vang on the SM, not its designed purpose or attachment point, has contributed to boom fracture and it could well be the case on the 54.
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As to your "vang" on the mizzen I am sure because of the angle and mounting point, it is actually a preventer as it is on the SM. Kind Regards Danny SM 299 Ocean Pearl On 14/12/2022 00:50 NZDT Nick Newington via groups.io <ngtnewington@...> wrote: |
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I have found it more than acceptable to not use the mizzen traveller at all. I just leave it central and control the boom with the mizzen vang from the cockpit.
When broad reaching normally one would want the mizzen all the way down the track. I simply ease the sheet and vang it down and out from the cockpit. I can get the boom in exactly the same or a better position than with a traveller. See my set up in the very short video clip attached. All the best Nick S/Y Amelia AML 54-019 Leros Gr |
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