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alap
Joined: 17 Dec 2007 Posts: 156
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Posted: Wed Sep 18, 2019 1:23 am Post subject: fiberspar carbon boom - bend |
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Had great session, about to derig and notice that my boom is funny looking:
https://photos.app.goo.gl/zXcPk3rgh7fEBMcx6
It is 7.0 dedicated boom 170-218.
Set at 197 (middle)
bought it new around 2004, so roughly 20 hours a season, 300 hours total
yes it was overpowered session, and sail completely outhauled, but nothing exceptional.
What was unusual, there was a strong gust, I was completely in control on the reach, and then suddenly "boom" , noise like sail does when it backwinds.
Couple minutes later I see that the outhaul is not to the max , about an inch between sail clew and boom.
Weird, never happened before, but I thought may be it is adjustable sailworks outhaul cam lock gave a little....
Anyways, outhauled back to the max, sailed for half an hour, and then it died down a notch, so I let a bit of outhaul. Everything as usual.
so basically, Qs:
1. i thought that carbon is not bendable, it just breaks
2. is it safe to continue to use, or it will break pretty soon? (I don't care how it looks) |
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pmlct
Joined: 02 Mar 2010 Posts: 68 Location: Middletown CT
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Posted: Wed Sep 18, 2019 6:12 am Post subject: |
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Did you take the tailpiece out of the body of the boom to examine properly? It looks broken from here, but my x-ray vision doesn't work that well from far away. |
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boardsurfr
Joined: 23 Aug 2001 Posts: 1266
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Posted: Wed Sep 18, 2019 8:14 am Post subject: Re: fiberspar carbon boom - bend |
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alap wrote: |
1. i thought that carbon is not bendable, it just breaks
looks) |
Correct. You are looking at a break, it is just not broken all the way through. I had the same thing happening to a carbon boom last year.
alap wrote: |
2. is it safe to continue to use, or it will break pretty soon? (I don't care how it looks) |
It will break very soon - most likely in your next session if you use it again. |
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manuel
Joined: 08 Oct 2007 Posts: 1158
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Posted: Wed Sep 18, 2019 9:27 am Post subject: |
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It looks like the clip slipped. Those tabs wear out, break and skip. On an old Neilpryde boom I wrapped the tabs with electrical tape so that the clips are tighter when twisted shut.
Get the tail piece out and try to bend either part, see how they react. _________________ *NEW* - Manu's Windsurfing Blog, The STORE! |
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swchandler
Joined: 08 Nov 1993 Posts: 10588
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Posted: Wed Sep 18, 2019 11:43 am Post subject: |
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If you take the tail extension off, there is a strong likelihood that any partial break in the boom arm will show a lot of play at the compromised area.
I had an experience with a Gulftech Glory carbon boom where the carbon tube coming out of the front end cracked, but it was not visible. Yet, the boom didn't seem as stiff and stable overall. It was only after I removed the extension later after coming in that I could see just how bad things were. I account myself quite lucky that it didn't completely break apart while on the water. Needless to say, the boom was toast. |
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alap
Joined: 17 Dec 2007 Posts: 156
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manuel
Joined: 08 Oct 2007 Posts: 1158
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Posted: Wed Sep 18, 2019 3:34 pm Post subject: |
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Exactly. Did you notice the twist clips were pretty loose, easy to close with little resistance? They need to be somewhat firmly closed.
The grooves wear similarly to holes wearing from metal pin friction.
EDIT: the tape is there just to add some girth, the boom can still be adjusted as needed. One of my tabs had also broken. _________________ *NEW* - Manu's Windsurfing Blog, The STORE! |
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alap
Joined: 17 Dec 2007 Posts: 156
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Posted: Wed Sep 18, 2019 4:38 pm Post subject: |
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thank you Manu,
I am puzzled though were this wear comes from - it was adjusted may be twice, with two new sails.
I guess it is every gust that tries to shorten the boom.... little by little...
what an expensive sport we are in.... still the best sport on earth - when it is blowing and your rig matches the wind. I'd say even better than powder skiing... |
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quigley
Joined: 23 Mar 2010 Posts: 58
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Posted: Wed Sep 18, 2019 6:37 pm Post subject: |
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Fiberspar boom lock kit ...try Windpower in Wisconsin for the replacement kit. Better than tape 😁 |
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NOVAAN
Joined: 28 Sep 1994 Posts: 1555
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Posted: Wed Sep 18, 2019 8:09 pm Post subject: |
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You should be able to find new parts somewhere for that boom. I had the same issue a long time ago. As did others... |
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