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Discussion Topic: Stainless steel Rigging
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billmaxted |
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It's something we change on a regular basis because if a hirer overwinds the winch the ends can get kinked but this had got half along. I just thought I would mention it in case anyone needed to be put on notice. We use stainless because it seems to coil back on the winch wheel more smoothly and therefore more evenly.
You don't have to tell us anything my Brother in Law has a boat on the upper Thames Bill...
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BarnacleBill |
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Dons plastic Tefal forehead...
As a point of interest (or not), some types of stainless steels are unsuitable for high stress applications where they may be exposed to chlorides (e.g. a salt water environment), as stress cracks can develop. Don't know if this applies to extruded wire though.
Removes plastic Tefal forehead...
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billmaxted |
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Think there must have just been something odd about that lot. s/s 5mm Flexiwire max loading around 2.5 tons a canopy going 7ft cannot get anywhere near that. very Odd.
You don't have to tell us anything my Brother in Law has a boat on the upper Thames Bill...
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rustic |
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Rather than start a new thread, I was talking to a man at a boat
jumble earlier today, in Cheshire, and he was selling his old yacht
rigging, for handrails, domestic use etc
He said that his insurance company insists that the rigging on his 35
footer is replaced every 10 years.
Is this the case of every insurance company?
best regards, Richard.
I can't wait to be back on our boat on
the Broads.
This message was edited by rustic on Sep-9-12 @ 3:40 PM
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davidstamford |
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If our insurance company is typical the replacing of rigging after a stated number of years only applies if insuring for racing. I don't know wheather that means that we would not be insured for rigging failure if not insured for racing.
David
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Teadaemon |
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Quite a lot of insurance companies will insist that stainless steel standing rigging is replaced every 10 years, whether the boat is insured for racing or not.
This is because the most reason for stainless steel rigging to fail is fatigue, and there are few or no warning signs that it's going to break before it does so. Since the cost of new standing rigging is a small fraction of the cost of a whole new rig, periodic replacement is a sensible precaution.
Of course nobody has ever come up with a decent scientific argument why it should be every 10 years rather than every 9, 12, 15, etc - basically somebody pulled a number out of their backside, thought 'that looks about right', and that's pretty much what the whole industry has been working to ever since.
Of course galvanised steel wire is very different, much more tolerant to fatigue and it gives loads of warning before it's likely to go.
Brendan Burrill Dip Comp. DipMarSur (YS) GradIIMS
Burrill Marine Services surveys, consultancy, project management
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Mar-29-2005 @ 8:40 AM
