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w8n4wind
Joined: 12 Nov 2008 Posts: 278 Location: canada
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Posted: Mon Apr 01, 2013 10:23 pm Post subject: neil pryde v8 'shear tip' |
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over the winter i picked up an old 9m np v8 with the 'shear tip' in really good condition. i finally got to use it for the first time a few days ago, but no matter how much outhaul, or downhaul, it just flops around very loose, and looking at it while sailing it doesnt seem to be serving any purpose and just looks bad. it doesnt even twist with the rest of the sail at the top.
so just wondering, what was the point of the shear tip ? did it ever work?
im thinking i might just take the scissors to the shear tip and be done with it. _________________ i like longboards. |
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dllee
Joined: 03 Jul 2009 Posts: 5329 Location: East Bay
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Posted: Mon Apr 01, 2013 10:53 pm Post subject: |
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Scissors, cut in an arc.
You have the wrong mast tip plug.
Cutting cures the problems. I've seen more than 10 cut that way. My Diablo's are cut, as were my Z-1's. From sail tip top to top batten leech. |
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spennie
Joined: 13 Oct 1995 Posts: 975 Location: Thousand Oaks, CA
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Posted: Tue Apr 02, 2013 8:10 am Post subject: |
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Yes, they worked - for about a month on a new sail with the right mast tip. The Shear Tip was an ill-concieved notion by Neilpryde, and poorly engineered. This is actually the first time I've heard of cutting it off, but if that's possible, go for it. _________________ Spennie the Wind Junkie
www.WindJunkie.net |
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carl
Joined: 25 Feb 1997 Posts: 2674 Location: SF bay area
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Posted: Tue Apr 02, 2013 12:11 pm Post subject: |
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Just pull out the rubber plug in the top of your mast and it will work.
I had a Z1 race sail and a Supersonic both with the shear-tip.
They both rigged and sailed great with the mast plug removed.
For some reason the part of the shear-tip that goes into the top of the mast was made very large and doesn't fit a standard mast plug. Just pull the standard plug out of the mast and rig the sail. The shear-tip will stand up and rotate as designed.
If you want to seal the end of the mast use a closed cell foam plug but keep it about 3/4 inch below the tip of the mast.
Last edited by carl on Tue Apr 02, 2013 1:13 pm; edited 2 times in total |
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mark
Joined: 10 Apr 2000 Posts: 181
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Posted: Tue Apr 02, 2013 12:55 pm Post subject: |
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I had a 6m V8 with a shear tip which I removed. After I cut the sail I added a bit of material and sewed some kevlar cloth the edge. The extra material was to prevent the panel from flapping and splitting because there was a single mylar edge after I cut off the top piece. You could easily use some sticky backed dacron cloth or even part of a large vinyl sticker for some extra reinforcement.
The plug that was used on the shear tip was quite a bit larger in diameter than most standard ones. It would be best if you could exchange it for a smaller pin unless it requires opening up the top of the sail. If it looks like too much work just cut off the tube and try rigging it. You already used the sail with your mast so it may seat well enough to remain in place but not too deep that it gets stuck. |
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mogunn
Joined: 03 Apr 2006 Posts: 1307 Location: SF Bay
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Posted: Tue Apr 02, 2013 12:56 pm Post subject: |
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It's possible that the shear tip hardware itself is broken. In that case none of the mast plug solutions will work. Here's a link to the user manual for a shear tip V8.
http://download.neilpryde.com/2002/pdf/manuals/v_um.pdf
The parts can be replaced -- if you can find them. _________________ mo |
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dllee
Joined: 03 Jul 2009 Posts: 5329 Location: East Bay
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Posted: Tue Apr 02, 2013 1:28 pm Post subject: |
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You cut in a curve so you don't get a floppy leech at the top mono panel.
The weight of the sheartip parts is noticible, so when you remove it, losing maybe 1/2 square feet, the sail feel slighter and livelier. |
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w8n4wind
Joined: 12 Nov 2008 Posts: 278 Location: canada
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Posted: Tue Apr 02, 2013 2:08 pm Post subject: |
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hey all, thanks for all the tips..
actually i did try it with the mast plug removed as well, and also mc lubed, and it was just marginally better, but still was just not really doing anything flopping around up there.
anyway, good to know it just wasnt this one particular sail, so time to take the scissors to the shear tip, and if it makes the sail feel a bit lighter and livelier, all the better. _________________ i like longboards. |
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d0uglass
Joined: 28 May 2004 Posts: 1286 Location: Bonita Springs, Florida
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Posted: Tue Apr 02, 2013 2:50 pm Post subject: |
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I had a similar problem on an RX1 and RX2.
Remove the shear tip batten and then slice off the floppy tip of the sail with scissors to make it square-topped. I put duct tape along the cut so there wouldn't be a bare monofilm edge. Didn't notice any difference in sail performance.
-James _________________ James' Blog: Windsurfing Equipment Size Calculator
http://jimbodouglass.blogspot.com/2010/11/updated-windsurf-calculator-online.html |
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RaceboardDude
Joined: 08 Dec 2010 Posts: 86
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Posted: Thu Apr 04, 2013 10:44 am Post subject: |
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Have some N.P. shear tip parts in the junk bin. Will post photo shortly. Hit me back if you want them. Ranks up there as most pointless windsurfing design ever... |
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