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seastream
Navigator

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USA
242 Posts
Initially Posted - 02/18/2005 :  21:44:14  Show Profile  Visit seastream's Homepage
My boom leans to port, this is corrected only slightly when the mainsail is raised, thus pulling upward on the boom and straightening it. Do I need to replace the boom to mast mount (think this is referred to as the gooseneck), due to excessive wear? If so, do I need the whole gooseneck and slide assembly or just the slide?
Seastream
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Frank Hopper
Past Commodore

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Pitcairn Island
6776 Posts
Response Posted - 02/18/2005 :  22:01:38  Show Profile  Visit Frank Hopper's Homepage
Do you mean it is rotated on the long axis?
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dlucier
Master Marine Consultant

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Virgin Islands (United Kingdom)
7583 Posts
Response Posted - 02/19/2005 :  09:41:28  Show Profile
Robert,

I haven't really measured how much my boom twists (rotates) from side to side, but I'd imagine that with the inherent slop around the gooseneck, it has ample room to be influenced by the natural lay of the foot of your mains'l.

Do you have a boltroped, shelf-footed main?

If you do, this may induce a twist in the boom. If memory serves me, with my former mains'l, a somewhat stiff, boltroped, shelf-footed sail, the boom had a slight twist due to the natural pull of the pocket at the foot. This pocket at the foot of my former mains'l was quite large and even with the sail controls tightened up, the sail material exited the kerf off to one side instead of straight up. This maybe causing the twist in your boom and if it is, it is nothing to be concerned about.

Is the twist in the boom being caused by something like an external outhaul control line that is led to the cockpit that might be exerting a little pressure on one side of your boom resulting in a twist?

Is the twist present with all control lines eased and without the mains'l hanked on?

In conclusion, if your gooseneck and all attaching boom hardware appears to be in good condition, I wouldn't get your knickers in a "twist" over the boom rotating slightly to one side or the other.
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Lightnup
Master Marine Consultant

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USA
1016 Posts
Response Posted - 02/19/2005 :  11:16:50  Show Profile
For what it's worth, the booms on both of my C25s "lean" a bit to port and, as Don suggested, the first flake on both mainsails is to port which likely has an effect on the boom's ability ro remain directly upright.

Incidentally, have a potential buyer for Wind Point coming in about 45 minutes so hopefully I won't have to say "both of my C25s" ever again. Wish me luck.

Steve
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seastream
Navigator

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USA
242 Posts
Response Posted - 02/19/2005 :  16:04:50  Show Profile  Visit seastream's Homepage
Yes, Frank, rotated along the long axis. Don, my main is a 1992 Harken. If bolt roped means that there's rope sewn into the foot of the sail that slides into the boom, I believe that's what I have. What other material would be used in the foot? What does 'shelf footed' mean? Thanks for your input, guys.
I went up to see Illusion today. Other than some snow in the cockpit and on the decks, she's fine, and waiting to be moved to the ocean early May.
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Notice: The advice given on this site is based upon individual or quoted experience, yours may differ.
The Officers, Staff and members of this site only provide information based upon the concept that anyone utilizing this information does so at their own risk and holds harmless all contributors to this site.