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Boat Forum / Building / November 2006Keel bolts
The tops of my keel bolts, i.e. bolts and nuts, are covered by a solid resin (I think) cylinder. It looks like someone put cardboard cylinder around each and filled them with resin. Is it normal practice to cover the keel bolts like this, or a do-it-yourself idea? Are the keel bolts happy in there? The 'casts' hace a few cracks, but I can't tell if they are deep. Should I take them off? If yes, put anything else on instead? Ot just leave alone? Thanks! > The tops of my keel bolts, i.e. bolts and nuts, are covered by a solid > resin (I think) cylinder. It looks like someone put cardboard cylinder [quoted text clipped - 6 lines] > > Thanks! Remove the casts, this is a stupid practice and the bolt heads should be free to inspect and tweak if necessary. (I assume they are stainless?) > The tops of my keel bolts, i.e. bolts and nuts, are covered by a solid > resin (I think) cylinder. It looks like someone put cardboard cylinder [quoted text clipped - 6 lines] > > Thanks! You shouldn't have any coating on them... same goes for lifelines, stays, etc.... that PVC deprives the metal of oxygen, promotes rust.  Signature"j" ganz @@ www.sailnow.com 1980's Newport; do you think they are stainless? Well, I will uncover them just to see. Thanks! "Capt. JG" <jganz@sailnow.invalid> wrote in news:12m6iaprthtaod8 @corp.supernews.com: > that PVC deprives the metal of oxygen, promotes rust. Hmm...that's a new one. I thought to make Iron Oxide (rust), you needed the Oxide part....Oxygen. It doesn't rust if I take that away, like coating it with paint or grease, right? My Navy musta had it all wrong. They kept making me scrape the perfectly good paint off it and putting new paint on it so it WOULDN'T rust away. It seemed to work. Our ship was 1952 and no rust holes, yet! Larry SignatureTurkeys will be cheaper, Friday morning...(sigh) > "Capt. JG" <jganz@sailnow.invalid> wrote in news:12m6iaprthtaod8 > @corp.supernews.com: [quoted text clipped - 4 lines] > the Oxide part....Oxygen. It doesn't rust if I take that away, like > coating it with paint or grease, right? Never heard of crevice corrosion Larry? Stainless steel is stainless because it is covered by a protective oxide layer (same principle as with aluminum). Oxygen is needed to maintain this layer. If you cover SS and block oxygen, corrosion occurs when moisture gets to the SS and in a salt environment, chlorides attack the SS even worse. Meindert > "Capt. JG" <jganz@sailnow.invalid> wrote in news:12m6iaprthtaod8 > @corp.supernews.com: [quoted text clipped - 11 lines] > > Larry Larry, see Dave's reply. Sorry I wasn't more clear... sheesh... Signature"j" ganz @@ www.sailnow.com If the bolts are galvanized steel, the coating might be a good idea. Agreed that they should be uncovered if stainless. OTOH, that's why stainless steel isn't the best keelbolt material. Most of the bolt, the part you can't see, is sealed from that protecting oxygen. Hence, you never know whether you'll be getting crevice corrosion down where you can't see it. So, a better material is Monel or Bronze, assuming lead ballast. (If the ballast is iron, galvanized steel will be better.) > You shouldn't have any coating on them... same goes for lifelines, stays, > etc.... that PVC deprives the metal of oxygen, promotes rust. > If the bolts are galvanized steel, the coating might be a good idea. > [quoted text clipped - 8 lines] >> You shouldn't have any coating on them... same goes for lifelines, stays, >> etc.... that PVC deprives the metal of oxygen, promotes rust. Perhaps, but that wasn't the question, and I've mostly seen stainless bolts. I certainly haven't seen any iron lifelines. :-) Signature"j" ganz @@ www.sailnow.com > Agreed that they should be uncovered if stainless. OTOH, that's why > stainless steel isn't the best keelbolt material. Most of the bolt, [quoted text clipped - 3 lines] > lead ballast. (If the ballast is iron, galvanized steel will be > better.) All you guys also miss the BIG point....."NMMA economics".... I hope you are all way smart enough to realize that NO boat manufacturer of ANY boat on the PLANET wants the goddamned boat to LAST past the end of the warranty period....right? Do you REALLY think any of them give a sh.t about how long the keel bolts are going to last and spend one-thin-dime on making them last any LONGER? Come on! You people gotta be WAY smarter than that! Geez...... Larry >> Agreed that they should be uncovered if stainless. OTOH, that's why >> stainless steel isn't the best keelbolt material. Most of the bolt, [quoted text clipped - 18 lines] > >Larry Yeah, I can't imagine any company worrying at all about it's reputation, or even the potential for product liability lawsuits. How silly! CWM Charlie Morgan <*@*.com> wrote in news:c1spm29ostoenhoaqmsndf8t5ksao20uek@ 4ax.com: > product liability lawsuits What liability? A bolt rusted out? GM is laughing at us....(c; >Charlie Morgan <*@*.com> wrote in news:c1spm29ostoenhoaqmsndf8t5ksao20uek@ >4ax.com: > >> product liability lawsuits > >What liability? A bolt rusted out? No, a keel falling off. Ask Bavaria Yachts about what one or two of those episodes can do to your entire bottom line. Meanwhile, your statement about boats not being built to last past the end of the warrantee applied to the WHOLE boat, not just the keel bolts. Try a little intellectual honesty next time - if you are able. CWM > Do you REALLY think any of them give a sh.t about how long the keel bolts > are going to last and spend one-thin-dime on making them last any LONGER? Yes. But you pay more for better quality. Our keel bolts are still fine after 34 seasons, and they put 50% more of them in than the naval architects now say are appropriate. Adding a few bolts is cheaper than the bad PR of a keel falling off. SignatureJere Lull Xan-a-Deux ('73 Tanzer 28 #4 out of Tolchester, MD) Xan's Pages: http://members.dca.net/jerelull/X-Main.html Our BVI FAQs (290+ pics) http://homepage.mac.com/jerelull/BVI/ Wow all those years as an engineer I had it completely wrong! I should have been working on screwing customers rather than balancing the needs of cost, life and servicablity. > > Agreed that they should be uncovered if stainless. OTOH, that's why > > stainless steel isn't the best keelbolt material. Most of the bolt, [quoted text clipped - 18 lines] > > Larry > Wow all those years as an engineer I had it completely wrong! I should > have been working on screwing customers rather than balancing the > needs of cost, life and servicablity. What "life" was it designed for, 30 years? 40? Who will buy them after the limited customers have them? How will you stay in business? Is now a good time to remind you all that the BAYLINER piece of sh.t is the MOST successful line of boat ever produced....made of pop riveted door, stapled seats and cardboard over a chopper-gunned plastic hull? It's sure made Brunswick rich.... Larry SignatureIf we eliminate religion, will they stop murdering each other? |
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