| Spectra or Vectran Standing Rigging #11918 10/22/02 04:06 PM 10/22/02 04:06 PM |
Joined: Oct 2002 Posts: 50 Farmington, Utah thouse OP
journeyman
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OP
journeyman
Joined: Oct 2002
Posts: 50 Farmington, Utah | My Stiletto 27 standing rigging is just starting to show a hint of rust near some of the fittings and it has been on the boat for some time (I think).
At first blush, it would seem replacing this standing rigging with some of the hi-tech synthetics could reduce cost, increasing working loads and breaking strength ... while also reducing weight aloft.
It seems as though splicing and carrying emergency replacement stays would also be simplified and possibly less costly for the standing rigging and emergency replacements.
For random cost comparison, 3/8 inch Sampson Spectran-12 line costs about $2/ft., has a breaking strength of 14,000 lbs., while Stainless runs about $3.50/ft. Indeed, one would also consider the ease and cost reductions of being able to spice rigging at home, vs. spending money for a rigger and the cost of marine eyes at $25 each.
From what I understand, some of the latest and greatest synthetics are UV prtected and pre-stretched so the fiished length won't "creep".
My intended use of the boat, will be for cruising in areas that don't have rigging and riggers readily available. It would seem having rigging and materials for replacement extras that I can install seems prudent.
Has anyone done this, explored or have experience or comment on this use of synthetics for a 27 foot catamaran standing rigging application, standing a 35 foot mast....???
What are the pros and cons?
Tom H.
| | | Re: Spectra or Vectran Standing Rigging
[Re: h17windbtch6333]
#11921 10/23/02 08:26 AM 10/23/02 08:26 AM |
Joined: Jul 2001 Posts: 2,844 42.904444 N; 88.008586 W Todd_Sails
Carpal Tunnel
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Carpal Tunnel
Joined: Jul 2001
Posts: 2,844 42.904444 N; 88.008586 W | Great and personallly interesting topic here.
Wouter? Wouter? Maybe he's still sleeping.
I think Wouter, and others have some good advice for you on this subject.
I use spectra in place of the SS wire on the tramp of the 4-way jib system, and on the stays on my spinaker pole on my Nacra 6.0.
F-18 Infusion #626- SOLD it!
'Long Live the Legend of Chris Kyle'
| | | Re: Spectra or Vectran Standing Rigging
[Re: thouse]
#11923 10/23/02 01:56 PM 10/23/02 01:56 PM |
Joined: Jun 2001 Posts: 47 Mark Meis
newbie
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newbie
Joined: Jun 2001
Posts: 47 | Synthetic rigging has been used on many boats and work well. Layline will make it for you. The key is your eyesplices. Will it break sure. I am not sure I like giving up wire for weight in this case but I have thought about putting it on my boat. My class rules ban it so I will not make the change.
Manufacturers SWL's and breaking strengths are just indicative numbers. I take them as an indicator.
This last summer I was out sailing in a steady 20 mph wind with gusts to 25 + when the jib halyard snapped. The halyard was 5/16 Amsteel Blue. It had a tensil strength of 13,700 pounds. I didn't think that would happen.
Change your battens to foam and the mast tang shackle to titanium, and get some high tech sails then wires to synthenic. It cost a lot of money and unless you are one-design racing no real return. Best thing is to have good standing rigging.
Mark
C28R no. 140
Houston, TX
| | | I just woke up !
[Re: Todd_Sails]
#11929 10/24/02 10:55 AM 10/24/02 10:55 AM |
Joined: Jun 2001 Posts: 9,582 North-West Europe Wouter
Carpal Tunnel
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Carpal Tunnel
Joined: Jun 2001
Posts: 9,582 North-West Europe |
I just woke up !
But seriously, I'm so involved in talks to designers and parties in order to make the F16 an trully international class with more than 3 builders that I don't get out much on the open forum anymore.
Anyways I don't have much to what is already said. Yes Vectra or so is a strong material and I trapeze of it. Yes, the strength is much reduce when looped or knotted unlike steel and nicopress fittings. Weigth reduction versus air resistance, humm good one. Yes, the wear on steel wires is much easier to see. Vectra and sorts can wear from the inside and break before anything is noticed.
I use these line for my trapeze line and spi pole rigging and what not else but I'm personally not comfortable yet with using it as standing rigging or as diamond line. A line that is onder tension is easy to cut by knife or other sharp object.
That is all
Wouter
Wouter Hijink Formula 16 NED 243 (one-off; homebuild) The Netherlands
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