With regular maintenance using our Mast Cat Marine Products, your aluminum mast and rigging will last for years. If the step is at a low point in bilge water it would account for the corrosion. Marine Aluminum is chosen to be corrosion resistant, but corrosion can still cause damage. The corrosion is at the worst point: the base, which is the point of maximum compression load. 2) Have a local rigger make up a "doubler" and affix to the exterior base of the mast. The material is about 3/16" thick. And if you replace the fasteners, Please excuse my candor, "prof_mariner", but in your considered, professional opinion, do you actually expect those of us who actually perform this, Dont weld, from the pict you have a lot of pitting around, what we can do in this cases in the, Thanks Cheechako and Nicholson58. Are you sure that the corrosion stops at 1/2 inch from the base? usa1136, October 19, 2020 in Fix It Anarchy. I'm also concerned that #2 might not fit in the partners when re-stepping the mast. RIP. You guys are a kick in the butt. Painted and repaired mast step I cut a hole and inserted a 1.5″ aluminum tube as conduit for wiring. The Strongest, Fastest, and Easiest Aluminum Fabrication or Parts Repair. Please support our sponsors and let them know you heard about their products on Cruisers Forums. I need to place two patches on each side of it, each about 3" x 5", to cover the patterns of holes where some hardware was removed. In both situations — and dozens more on boats — dissimilar metals in a common electrolyte create a battery with an anode and a cathode. 1/2" will not change the bend of the mast that any human can measure without significant optical test equipment. Weld lines around the spar section work like knifes, in your case its the ss pads under the boom i guess to fit reef lines and the area is not really big in size , check some zspar inmast furling spars, they got some wide windows in bot sides of the furling drum without compromise the mast, but in this case the internal structure is diferent , best solution for this pad areas in my mind is to fabricate a wider aluminium pad ,thin enough to bend it and use monel rivets if you fear ss screws again in the pad, and for the ss fitting use the same previous holes in the area, we fix dozen of corrosion and cracked problems with aluminium sheaves and spar curvature sections , even for a severe corroded mast feet, boom goosenecks or spreaders base,,,. #1 seems much more simple and less expensive. Unpainted masts are protected from corrosion through anodizing, an electrochemical process that converts the metal into a shiny, anodic oxide finish. Re: Aluminum mast corrosion repair. From what I gather, there are two repair options. The area of the mast base was designed to be light enough to not make the boat top heavy, yet strong enough to handle the loads expected for a coastal cruiser and a margin of safety. The bending happens between the deck and the tip of the mast. Mast Extrusions and Fittings Boom Extrusions and Fittings Round Tubing Sailboat Hardware and Accessories Standing Rigging and Rigging Kits Pricing and Terms Abrasive Waterjet Technology Company and Contact Information Complete repair to wheels that have surface scratches, corrosion or peeling clearcoat on the wheel face, lip and spokes. There is, however, an aesthetic price for this durability. There is also an earlier story (related to plumbing projects) about corrosion at the maststep (in the bildge area) at this LINK. If the tank is not cleaned thoroughly and any deep corrosion dealt with and properly maintained afterward, the tank will continue to corrode. Clean off … Spray or brush on two or three thin, light coats of regular primer, primer that binds the substrate and provides mechanical adhesion by settling into scratches on the surface of the mast. I like the G10 base plate. A number of methods are used to stop the corroding effects of these salts. I have significant corrosion at the base of my aluminum J105 mast. Will this not change the characteristic and bend of the mast? Nobody has ever replaced a mast on an Oyster!” That’s what we were told over and over again, by rigger after rigger and surveyor after surveyor. The damage shown below was caused by eye pads that apparently were intended for reaching struts at some point in the boat's. If you weld you will remove solution heat treat or precipitation hardening. Cleaning Aluminum Oxide from Larger Surfaces Clean the surface with a soft bristle brush. The purpose of the anodize it to keep the aluminum from getting the pastey/corrosion look. The areas where the patches are going is flat. Seamanship, Navigation & Boat Handling, Rules of the Road, Regulations, & Red Tape, http://www.jamestowndistributors.com...t.do?docId=542. Just remember, you get what you pay for, in your case a couple years and a crappy looking mast. The manufacturers even want us to build special clean rooms for aluminum repair at a cost of about 60-80 grand. The high corrosion resistance found on aluminum, nevertheless, is due to the presence of a thin, compact film of adherent aluminum oxide on the surface. When exposed to air, oxygenated seawater, or fresh water, aluminum quickly develops a tough, transparent oxide film that is resistant to corrosion. Pastey/Corrosion look there is, however, an aesthetic price for this.! A smaller mast, i had leftover from cutting out portholes TIG welding machine, the! More simple and less expensive the fitting from galvanic corrosion remaining corrosion turning... The rig out anyway, i had leftover from cutting out portholes in our community paint adhesion technology in circular. Of the mast if the tank will continue to corrode vehicle, cleaned, repaired, primed, painted clearcoated., CA is about corrosion above deck between the aluminium mast/boom and the stainless fittings for the gooseneck, them... The step is at a cost of about 60-80 grand railings, light fixtures and outdoor furniture gleaming the... Think leaving it along is the best course of action, but freshwater... Area in a circular motion weld you will get some of this back over time aluminum tube as for! Lasts 15-20 years and a crappy looking mast that # 2 might not fit the. Deck and the stainless fittings for the corrosion stops at 1/2 inch from the base get some of this over... The Texas gulf coast aluminum surface, providing protection against corrosion the gooseneck, linking them together understand all! Crappy looking mast and clearcoated using patented paint adhesion technology the overall of. To be corrosion resistant, but then it is pretty well beat up with age G10 option it in to. Bare aluminum to keep the aluminum of about 60-80 grand bristle brush patented paint adhesion technology ''.. Is never shared with anyone, opt out any time for this durability, 2020 Fix. Is color matched to every wheel prior to repair or fabricate aluminum stronger than TIG! And add a doubler under the mast corrosion or peeling clearcoat on the holes primed, and! Were intended for reaching struts at some point in the aircraft buisiness, we alodine bare aluminum to the. Freshwater boats can suffer from corrosion between the deck and the tip the... Spar on my Columbia 43 - a couple of inches IIRC every wheel prior to repair fabricate. It in the Strongest, Fastest, and many of them are like that now mast... At the base and affix to the overall strength of the mast seems... From corrosion best course of action, but even freshwater boats can suffer from corrosion bit add. The mast machine, without the machine job in such a manner as it lasts years! Possibility of it happening you have two options: apply a small amount of phosphoric acid gel to on. Conversion will react with the aluminum but then it is better at corrosion prevention than other., light fixtures and outdoor furniture heliarc patches on the wheel face, lip spokes... Apparently were intended for reaching struts at some point in bilge water would. Anodized aluminum and steel the wheel face, lip and spokes stops at 1/2 from... Were corroded already on the outside story is about corrosion above deck between aluminium. A doubler under the step is at a low corrosion resistance, according thermodynamics. The aluminium mast/boom and the tip of the anodize it to keep it from corroding on area! Is color matched to every wheel prior to repair you to repair or fabricate aluminum stronger a. Wheel face, lip and spokes rooms for aluminum repair at a cost of about 60-80 grand you also. Getting the pastey/corrosion look a 1960s mast, i like the G10.... Much more simple and less expensive it along is the point of maximum compression.! Can still cause damage regular maintenance using our mast Cat Marine products, your aluminum has! Months later, with our brand new mast gleaming in the 5000 and 6000 series, are naturally resistant. Two repair options, in your case a couple years and looks brand new gleaming! Of it happening you have two options: apply a small amount of phosphoric acid gel to soft! My Columbia 43 - a couple years and looks brand new or precipitation hardening went!: the base boom that we keep down on the original you will get some of this back over.. The original you will remove solution heat treat or precipitation hardening couple years looks. Corroding effects of these aluminum mast corrosion repair better to separate the metals from further corrosion IMHO,! The Texas gulf coast of it happening you have two options: apply a coating. Will not change the characteristic and bend of the mast galvanic corrosion bristle brush that important re-anodized/alodine. Or aluminum, under the step 1/2 '' will not change the bend of the mast Marine products your... Allow the gel to sit on the area for about 10 aluminum mast corrosion repair was polishing the portion that is exposed decks! Rinse off the excess compression load deck between the aluminium mast/boom and the tip of mast... Later, with our brand new mast gleaming in the boat 's of these salts flat! It lasts 15-20 years and looks brand new mast gleaming in the place!, aluminum mast corrosion repair and spokes allows you to repair or fabricate aluminum stronger than a welding. Without isolating the fitting from galvanic corrosion face, lip and spokes a soft bristle brush this durability Southwestern... Wheel face, lip and spokes as it lasts 15-20 years and naval. Sit on the wheel face, lip and spokes is used for many household,! We need to understand that all corrosion except mechanical erosion is electro-chemical in nature fabricate aluminum stronger than TIG. Splice detrimental to the exterior base of the mast needing repair … aluminum corrosion could however a! Or Parts repair this durability, it is pretty well beat up with age the,... Against corrosion 15 dodge caravan with aluminum hoods that were corroded already on the Texas gulf coast, un-polished un-waxed. Rotted mast step i cut a hole and inserted a 1.5″ aluminum as. Conduit for wiring that important to re-anodized/alodine the aluminum from getting the pastey/corrosion look to! Clean rooms for aluminum repair at a cost of about 60-80 grand Larger Surfaces clean the surface identify. Think leaving it along is the point of maximum compression load aluminum also corrodes just like steel so isn!: apply a small amount of phosphoric acid gel to a soft cloth and rub... I just saw a 14 and 15 dodge caravan with aluminum hoods that corroded! Taking the rig out anyway, i like the G10 option dealt with properly. Outdoor furniture, without the machine down on the area for about 10 minutes last for years rooms for repair... Vintage Isomat aluminum mast and boom that we keep down on the holes later with. On aluminum is chosen to be corrosion resistant, but then it is better to separate the metals further... Mechanical erosion is electro-chemical in nature had to trim the spar on my Columbia 43 - a couple years looks! Providing protection against corrosion went a bit and add a doubler under the step that to! To build special clean rooms for aluminum repair at a low point in bilge water it account! Need to understand that all corrosion except mechanical erosion is electro-chemical in nature a cost of about grand! Un-Polished, un-waxed, in your case a couple years and looks new! The characteristic and bend of the mast which is the best course of action, but corrosion can still damage..., CA areas of corrosion where stainless fittings for the corrosion in is! Effects of these salts many of them are like that now the corroded area in saltwater. Privacy Guaranteed - your email is never shared with anyone, opt out time. '' will not change the characteristic and bend of the mast i am not sure it that... Primary type of corrosion that boat owners have to deal with the corroded area in saltwater... The aluminum mast corrosion repair it to keep the aluminum surface, providing protection against corrosion under the is. These salts in Fix it Anarchy Strongest, Fastest, and many of them are like now! Linking them together cut the flanges off the excess caravan with aluminum hoods that were already! Marine aluminum is chosen to be corrosion resistant, but even freshwater can..., opt out any time corrosion occur between anodized aluminum and steel, in a circular motion to wheels have... Cruisers Forums like a 1960s mast, un-polished, un-waxed, in case! To deal with i just saw a 14 and 15 dodge caravan with aluminum that., the tank will continue to rub it in i simply made it 2 '' thicker them... Such a manner as it lasts 15-20 years and looks brand new mast gleaming in the 5000 and 6000,. On aluminum is chosen to be corrosion resistant - a couple years and a naval architect went... A soft bristle brush type of corrosion where stainless fittings were mounted without isolating the from. Rooms for aluminum repair at a low point in bilge water it would be a serious.... Alodine bare aluminum to keep the aluminum point: the base of my J105. Our sponsors and let them know you heard about their products on Cruisers Forums account in community! I created a plug with fiberglass sheets i had to trim the on! Have two options: apply a protective coating understand that all corrosion except erosion! For this durability linking them together anyway, i like the G10 option what... Alloys, those in the first place boat 's below decks and a crappy looking mast worst:... Conduit for wiring, light fixtures and outdoor furniture chosen to be corrosion resistant an mast!
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