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Old 14-07-2014, 09:10   #1
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A little corrosion(?) on my lifeline fittings. Concerned?

Going to replace my old worn out lifelines with dyneema. This is the bowrail tangs. There is a little bit of discoloration at the weld. Only on the aft end. Same on both sides.

Pondering having a welder put new tangs on. But really don't want any more tasks or money.

Would this concern you in the immediate future? I guess it could also find some split lugs to use vs getting it welded. Click image for larger version

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Old 14-07-2014, 09:35   #2
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Re: A little corrosion(?) on my lifeline fittings. Concerned?

Sully...

I personally would polish her up and see if I could find any major pitting or deterioration of the base material in the tube... Looks like surface staining...
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Old 14-07-2014, 11:17   #3
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Re: A little corrosion(?) on my lifeline fittings. Concerned?

If you use dyneema you don't absolutely have to use those welded loops. You can use the tee where the stanchion meets the rail. In fact many recommend not using the welded loops because the bend radius of the dyneema is too small and weakens the splice. Lash the dyneema and get rid of all the metal hardware is a good strategy.
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Old 14-07-2014, 11:46   #4
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Re: A little corrosion(?) on my lifeline fittings. Concerned?

Polish it up and passivate the area using an acid compound designed for that.

Then instead of relying on whether that joint is or isn't solid, think about winding some small cordage, or tubular webbing, around the rail and attaching a d-ring or similar fitting with that, so that your lifelines are tied into ring or fitting that is secured to the railing.

The result will be a fairly clean look and absolutely minimal expense. And there's always an odd hour or two to kill on a boat, which is when sailors find ways to do ropework of some kind anyway.
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Old 14-07-2014, 12:04   #5
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Re: A little corrosion(?) on my lifeline fittings. Concerned?

I would not attach anything security related to any attachment point that carries any amount of rust AND especially when the rust is in a weld area.

Since you are thinking of a soft wire replacement, why not attach the line in an alternative way that NO WAY could fail?

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Old 14-07-2014, 15:42   #6
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Re: A little corrosion(?) on my lifeline fittings. Concerned?

Looks like surface rust at this point. Clean it up and keep an eye on it. And secure the lifelines with neat lashings.

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Old 14-07-2014, 17:53   #7
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Re: A little corrosion(?) on my lifeline fittings. Concerned?

Typically what happens when a weld isn't polished/passivated. Clean it up and should be just fine. Tap it with a hammer just to be sure.
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Old 14-07-2014, 18:22   #8
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Re: A little corrosion(?) on my lifeline fittings. Concerned?

Quote:
Originally Posted by HappyMdRSailor View Post
Sully...

I personally would polish her up and see if I could find any major pitting or deterioration of the base material in the tube... Looks like surface staining...
Agreed. You can also get some citric acid treatment to chemically passivate the stainless (citriSurf, $20 from the rust store).
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Old 14-07-2014, 18:31   #9
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Re: A little corrosion(?) on my lifeline fittings. Concerned?

Quote:
Originally Posted by sully75 View Post
Going to replace my old worn out lifelines with dyneema. This is the bowrail tangs. There is a little bit of discoloration at the weld. Only on the aft end. Same on both sides.

Pondering having a welder put new tangs on. But really don't want any more tasks or money.

Would this concern you in the immediate future? I guess it could also find some split lugs to use vs getting it welded. Attachment 84982Attachment 84983


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I'm guessing that the old lifelines were stainless, with thimble and fastened through these tangs?
Possibly just staining from the old wire and/or thimble, polish the heck out of it and I'm betting you will never see any further rust.
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Old 14-07-2014, 19:21   #10
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Re: A little corrosion(?) on my lifeline fittings. Concerned?

That looks like the type of light rust that will come right off if you polish it with something like soft scrub or 3m Finesse IT or other things. Once you do, look at it with your eyeglass you use for charts.
Personally I avoid any acidic type of stuff attempting to re "passivate" it. I've tried it several times and I've found most often it rusts again really quick if you do that. Likely because the acid , without any controlled passivation process attacks the grain boundaries in the metal.
While cruising I learned to fresh wash when ever I got fuel or it rained and monthly just go around the boat with a rag and 3M Finesse it to remove all those rust spots. It mad a big difference, albeit another thing for the To Do list!
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Old 14-07-2014, 20:00   #11
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Re: A little corrosion(?) on my lifeline fittings. Concerned?

Quote:
Originally Posted by transmitterdan View Post
If you use dyneema you don't absolutely have to use those welded loops. You can use the tee where the stanchion meets the rail. In fact many recommend not using the welded loops because the bend radius of the dyneema is too small and weakens the splice. Lash the dyneema and get rid of all the metal hardware is a good strategy.
Definitely DON'T eye splice the dyneema straight to this... Lot's of good reads on min radii (ray-dee-eye)...lashing, thimbles... ie colligo

Quote:
Originally Posted by Ann T. Cate View Post
Looks like surface rust at this point. Clean it up and keep an eye on it. And secure the lifelines with neat lashings.
+1 Ann

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Quote:
Originally Posted by roverhi View Post
Typically what happens when a weld isn't polished/passivated. Clean it up and should be just fine. Tap it with a hammer just to be sure.
Like the hammer tap suggestion roverhi...

Quote:
Originally Posted by Cheechako View Post
That looks like the type of light rust that will come right off if you polish it with something like soft scrub or 3m Finesse IT or other things. Once you do, look at it with your eyeglass you use for charts.
Personally I avoid any acidic type of stuff attempting to re "passivate" it. I've tried it several times and I've found most often it rusts again really quick if you do that. Likely because the acid , without any controlled passivation process attacks the grain boundaries in the metal.
While cruising I learned to fresh wash when ever I got fuel or it rained and monthly just go around the boat with a rag and 3M Finesse it to remove all those rust spots. It mad a big difference, albeit another thing for the To Do list!
Agreed against acid passivating stainless... if you can't polish it out, it's too deep to trust...
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Old 15-07-2014, 05:57   #12
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Re: A little corrosion(?) on my lifeline fittings. Concerned?

Anyone have any suggestions for something I can bolt on to the bow rail to lash the lifelines to?

These are the bases but my inclination is to have them terminate near this fitting so that they are higher unless someone tells me a good reason not to. Click image for larger version

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Old 15-07-2014, 06:59   #13
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Re: A little corrosion(?) on my lifeline fittings. Concerned?

You probably can lash to the pole. Can you do it so the old attachment loop is just used to prevent the lashing from sliding up or down on the pole? Maybe a couple of the lashing turns can go through the old loop. I can't see in that picture how the old lifeline attached.
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Old 15-07-2014, 08:20   #14
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Re: A little corrosion(?) on my lifeline fittings. Concerned?

Discoloration on stainless is common when small impurities are present. Failure to properly chemically clean after welding, using contaminated consumables when welding or when something is attached which transfers impurities to the stainless.

Keeping stainless clean usually requires a bit of elbow grease. If there is no visible corrosion after cleaning the loops will work fine.

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Old 15-07-2014, 09:21   #15
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Re: A little corrosion(?) on my lifeline fittings. Concerned?

I typically ring hitch to the stantion itself but thru the old wire rings. This way the attachment point is to the main tube, but the rings hold it in place. In part the best way is determined by exactly what hardware is in place.
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