ballystick 72 Posted January 4, 2015 Share Posted January 4, 2015 this has probably been talked about before, but has anyone had their anchor chain re-galvanised and compared costs for this to average chain quality total replacement? Link to post Share on other sites
Island Time 1,235 Posted January 4, 2015 Share Posted January 4, 2015 Yep, I've had it done several times. Approx 1/2 the cost of new chain. Now that the search feature works!! I found the old thread here http://crew.org.nz/forum/index.php/topic/2514-regalvanazing-chain-and-anchor/?hl=galvanised&do=findComment&comment=38118 Hope that helps. Link to post Share on other sites
Kevin McCready 83 Posted January 4, 2015 Share Posted January 4, 2015 Thanks for link to earlier topic. Possibly a piece of string question, but what are the guidelines on assessing need for new chain/galvanizing. We all know a lousy thin weak corroded one when we see it, but how to get it the stage when it's needing doing? Link to post Share on other sites
ballystick 72 Posted January 4, 2015 Author Share Posted January 4, 2015 Thanks Matt, I wasn't sure with some of the chain "bargains" around and regalvanising my original chain ensures quality. Link to post Share on other sites
Island Time 1,235 Posted January 4, 2015 Share Posted January 4, 2015 Yeah ballystick, same here! My Chain is 10mm PB from Ausy. KM says it's good stuff, and despite having already been re-galv 2x, Wheels tested a bit of it for me - still pretty close to spec! Kevin, I'll let KM answer that, but for me, when the chain starts to drip rusty water, or looks rusty, time to do it again.... And some say it can only be done twice. That's why I tested mine first, before a third go.. Link to post Share on other sites
BNG 44 Posted January 6, 2015 Share Posted January 6, 2015 East Tamaki Galvanisers have the machine that spins it so it doesnt get stuck together, good rates too. I think KM sends their stuff there. Link to post Share on other sites
ballystick 72 Posted January 6, 2015 Author Share Posted January 6, 2015 If they don't do it in Tauranga I'll give them a go, thanks BNG Link to post Share on other sites
Island Time 1,235 Posted January 6, 2015 Share Posted January 6, 2015 just make sure whoever does it has a proper centrifuge - otherwise the links can stick together, and separating them with a hammer is not great fun!! Link to post Share on other sites
ballystick 72 Posted January 8, 2015 Author Share Posted January 8, 2015 Thanks KM, mine is about 15 -20 yrs old so should be non-chinese maybe?? Link to post Share on other sites
jonathan 4 Posted January 14, 2015 Share Posted January 14, 2015 How much is it to get it tested? my chain has just this year started to look a bit rusty Keen for test and regalv Link to post Share on other sites
jonathan 4 Posted January 18, 2015 Share Posted January 18, 2015 I have had the boat since 2006 and it was 10 years old chain then its good chain IMHO. I will look at cutting off a M each end and get that tested, it really does need a regalv.... Will need to look at the anchor chain swivell thing to see how it locks the chain in? Link to post Share on other sites
John B 106 Posted January 18, 2015 Share Posted January 18, 2015 Just go park in kaiarara bay for a while and that will do the stripping process for you anyway. Anyone else experience this phenomenon this year?.. a bit of a new thing. A buddy was going spare about it ,and we didn't believe him until........... Link to post Share on other sites
Island Time 1,235 Posted January 20, 2015 Share Posted January 20, 2015 In Malaysia, in the tin mining areas, there is something in the mud that removes galvanizing almost overnight. Well known by the locals, but they don't know what it is! Link to post Share on other sites
erice 732 Posted January 20, 2015 Share Posted January 20, 2015 Corrosion in dissolved salts, acids and bases. Zinc is not used in contact with acid and strong alkaline solutions, because it corrodes rapidly in such media. Very dilute concentrations of acids accelerate corrosion rates beyond the limits of usefulness. Alkaline solutions of moderate strength are much less corrosive than corresponding concentrations of acid, but are still corrosive enough to impair the usefulness of zinc. http://www.keytometals.com/Article40.htm Link to post Share on other sites
John B 106 Posted January 20, 2015 Share Posted January 20, 2015 In Malaysia, in the tin mining areas, there is something in the mud that removes galvanizing almost overnight. Well known by the locals, but they don't know what it is! I put it down to whatever minerals/ acids that have been washed down the valley and into the bay from the storms in June . The destruction to the forest and river bed and banks has to be seen to be believed . I was in the same bay last year for that ex TC and have anchored there many times over the last few decades. Its never happened to me before. I should have taken a photo of the links , like I said my chain is a bit light on galvanising at the moment and any slightly rusty link was either bright or in the process of becoming bright metal as the rust was being converted... literally bubbling off it. Enough that after we went around the corner we put everything we'd had out in Kaiarara out and in a couple of times to wash it. Link to post Share on other sites
John B 106 Posted January 21, 2015 Share Posted January 21, 2015 We did go into the little coppermine in Kaiarara as it happens , you can't go in far, 30 or 40 ft maybe. The big one at miners head is amazing , but that's all blocked off by grates now. Still a lot of ore in evidence all around there. The water at Coppermine bay at miners head was a really murky turquoise colour this year too. Link to post Share on other sites
Recommended Posts
Archived
This topic is now archived and is closed to further replies.