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Old 21-10-2019, 20:51   #1
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New boat design

Knowing that the mainsheet traveller is a really good way of not sacrificing sail shape (trim) when adjusting the Main Sail, someone knows how come most new production sailboat seen at the Annapolis sailboat show did not have any.
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Old 22-10-2019, 17:55   #2
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Re: New boat design

Ils s’en fichent: ce sont des appartements flottants et régler la GV n’est pas important.
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Old 22-10-2019, 18:02   #3
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Re: New boat design

Any what? Traveler? That would be nuts.
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Old 22-10-2019, 18:35   #4
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Re: New boat design

Quote:
Originally Posted by Northbound44 View Post
Knowing that the mainsheet traveller is a really good way of not sacrificing sail shape (trim) when adjusting the Main Sail, someone knows how come most new production sailboat seen at the Annapolis sailboat show did not have any.
Examples? I saw travelers on every boat I saw, we might have been in different parts of the show?
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Old 22-10-2019, 18:53   #5
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Re: New boat design

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Originally Posted by redneckrob View Post
Examples? I saw travelers on every boat I saw, we might have been in different parts of the show?


Some good examples: Jeanneau, Beneteau, Moody, Elan
See the pictures, any main sail travelers? If you see one,hum... have you seen your optometrist recently!
Cheers


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Old 22-10-2019, 19:44   #6
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Re: New boat design

I remember seeing a video on this, the german twin main sheet allows some sail adjustments which replace the traveler. I would imagine the boats with the blocks further away from each other would allow more adjustment than those with close block....but I really dont know much about the system. I am curious though.
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Old 22-10-2019, 19:49   #7
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Re: New boat design

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Originally Posted by intervivos View Post
I remember seeing a video on this, the german twin main sheet allows some sail adjustments which replace the traveler. I would imagine the boats with the blocks further away from each other would allow more adjustment than those with close block....but I really dont know much about the system. I am curious though.


That system requires two independent sheets. One sheet pulls down while the other pulls to the center.

None of these boats has that.
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Old 23-10-2019, 06:29   #8
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Re: New boat design

My guess would be that they're saving money on hardware to increase their profit margins. You still have control over sail shape via topping lift and vang.

Or could it be that they do have twin mainsheets?
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Old 23-10-2019, 07:16   #9
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Re: New boat design

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Originally Posted by Northbound44 View Post
Some good examples: Jeanneau, Beneteau, Moody, Elan
See the pictures, any main sail travelers? If you see one,hum... have you seen your optometrist recently!
Cheers


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These boats all have traveller alternatives. Note that they all have blocks or a bridle line off center. This allows you to pull the boom to the centerline, which for most boats is as far as you want to go.

The first just has a windward block that allows the boom to be centered.

The middle boat picture is set up like a high performance dinghy like a 505. It's called vang sheeting. The bridle allows you to pull the boom to the centerline without much down force and the vang is used to control leech twist. For this to work well you need a powerful vang. The 505's have something like a 24:1 purchase. It doesn't look like the boat in the picture has enough purchase.

The third has an old system. I've seen this traveller on Cal 20s, old Lightnings, and a Morgan OI 41. It's not a great traveller.
As you sheet in, the boom will stop approximately over the leeward block. If you want the boom sheeted in to nearly the centerline of the boat, you grab the boom with your hand and pull it to the centerline and sheet in some more. The perimeter of the triangle formed by the sheets with the boom over the leeward block is bigger than the perimeter of the triangle with the boom between the blocks in the centerline, so once you have sheeted in more with the boom over the centerline, it can't go back out to leeward. (Very much anyway.)
On the Morgan I never tried pushing the boom to the centerline. The jib sheets so far outboard you don't want the boom farther inboard.

All the designs require a powerful vang for reaches.
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