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jm
Captain

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Canada
290 Posts
Initially Posted - 06/11/2002 :  11:42:06  Show Profile
Sunday morning was light air and I was able to hoist our gennaker for the first time. What a great sail this is ! I lowered my main just so I could watch it. On the return trip, (gennaker replaced by 150 genoa, and in stiffer winds -about 20 kts) while on a port tack, something in the vicinity of the rigging on the port side deck area created a loud "shwn-tang" noise. sort of like the sound of a bullet richoceting .

I immediately headed into the wind to ease rig tension on my port tack, as I thought of what might happen if the middle stay gave out completely. I headed off wind again to load the rig, but no similar sound. This was the first real 'load' we've put on the rigging this season. Is this normal 'settling in' or should I be looking for a de-threaded/stripped turnbuckle connection ?


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drhunt
1st Mate

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USA
26 Posts
Response Posted - 06/11/2002 :  15:00:16  Show Profile
This is just a wild guess but I'm wondering if you seizing wire, holding your port uppers to the spreader might have separated suddenly under stress. Unfortunately, the only way to check this out would be to remove the boot.

Daryl Hunt, C25 FK/TR #3595, "Discovery"
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Leon Sisson
Master Marine Consultant

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USA
1893 Posts
Response Posted - 06/11/2002 :  16:54:54  Show Profile  Visit Leon Sisson's Homepage
Was this the same sound you might get by striking a taut phone pole guy wire with a small hammer? ("Star Wars" Imperial Storm Troopers' small arms sound effect.) It would seem to me, that sort of sound could have been caused by a single strand failing in one of the stays, or a bolt snapping, or a casting cracking, or a weld failing, or maybe a closed-body turnbuckle jumping one of its threads. On a boat this size, if my rig made a scary noise, that I couldn't prove was harmless, I'd take down the mast and inspect everything until I was either convinced I'd found the source of the noise, or convinced that there was nothing wrong anywhere. One of the big advantages of trailerable sailboats is that you can unstep and restep the mast in about an hour pretty much for free. If this seems like a lot of trouble to go to, you might want to compare it against a price quote for a new mast from Catalina Yachts. The effort to change out a prepared extrusion at home is about a week of evenings, depending on how meticulous you are, what's broken, and what's getting upgraded. (Spreader bolt siezed in the compression sleeve<img src=icon_smile_shock.gif border=0 align=middle>? That was no fun at all.<img src=icon_smile_angry.gif border=0 align=middle>)

-- Leon Sisson


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OJ
Master Marine Consultant

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USA
4382 Posts
Response Posted - 06/11/2002 :  17:36:22  Show Profile
You might also have a piece of rigging that is now only being held in place by tension.
Speaking of shwstang, I wonder if feng shui applies to boats too?
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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.