Dwight,
I do not have detailed or scientific type data but more observed experience coupled with reading the debate as ISAF was banning the vinyl coating and considering the synthetics. Some of the details may have been presented at a Safety at Sea seminar a few years back. As to the failure strength of corroded wire, I read somewhere the force in Lbs that a lifeline would experience if a full sized crew fell into the lifeline. The force quoted was substantial but I do not have the referenced number at hand. I replaced Calypso's vinyl coated with bare to meet race safety requirements for some overnight open water type races here in the PNW and for our trip around Vancouver Island where offshore over night passages were planned. If one prefers the look and feel of the vinyl coating and has knowledge of the lifelines age and SS wire condition, observing some rust should not condemn them outright. The rust I observed on Calypso's old vinyl coated SS wire was significant and continued both deep into the wire and several inches back from the termination. I suspect I could not have broken the wire with hand force but based on age (10 to 15 year est age) and our trip plans it was an easy decision to invest in new wire. Martin Calypso 1970 C&C 43 Seattle ________________________________ From: CnC-List [cnc-list-boun...@cnc-list.com] on behalf of dwight veinot [dwightvei...@hfx.eastlink.ca] Sent: Sunday, February 17, 2013 1:53 PM To: cnc-list@cnc-list.com Subject: Re: Stus-List SS wire or line for lifelines Martin It doesn’t take much rust to make a stain on vinyl. I have some minor rust staining where the swaged joints meet the vinyl. And the vinyl has cracked in a few places along the lines and some staining shows there as well. The lifelines however still seem very strong and can take more than I can push against them…I believe in fact that the stanchion bases may pull away from the deck before the lifelines themselves failed. Did you do any detailed examination to see how the rust stains related to actual corrosion damage or better still did you try to pull them to failure. Dwight Veinot C&C 35 MKII, Alianna Head of St. Margaret's Bay, NS ________________________________ From: CnC-List [mailto:cnc-list-boun...@cnc-list.com] On Behalf Of Martin DeYoung Sent: February 17, 2013 4:14 PM To: cnc-list@cnc-list.com Subject: Re: Stus-List SS wire or line for lifelines Based on my own observations when replacing Calypso's 10 to 20 year old vinyl coated SS lifelines, 36 year SS lifeline are likely to fail under stress owing to hidden corrosion. Take a knife to the vinyl near an end and check how far the corrosion travels along the strands. Rust stains at the ends of the vinyl is a hint as to where to look first. My experience is based on a salt water boat. If you have always been in fresh YMMV. Martin Calypso 197 C&C 43 Seattle ________________________________ From: CnC-List [cnc-list-boun...@cnc-list.com] on behalf of jtsails [jtsai...@gmail.com] Sent: Saturday, February 16, 2013 4:45 PM To: cnc-list@cnc-list.com Subject: Re: Stus-List SS wire or line for lifelines Question......Having been away from the big boat scene for a very long time.... could you guys explain why vinyl coated lifelines have fallen into such disfavor? As far as I can tell, the ones on my boat are the original 36 year old vinyl coated wire, pretty good track record there! James Delaney C&C 38 MkII Oriental, NC ________________________________ No virus found in this message. Checked by AVG - www.avg.com<http://www.avg.com> Version: 2012.0.2238 / Virus Database: 2639/5610 - Release Date: 02/17/13
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