August 2005 - montgomery_boats - mailman.xmission.com

Re: M_Boats: re: galvanic
by DKerr4023＠aol.com 03 Aug '05

03 Aug '05

In a message dated 8/2/2005 6:53:18 PM, chonshell(a)ia4u.net writes: << I wonder if I need worry about galvanic corrosion at all since I'm a freshwater sailor (?) ... --Craig >> Too hot for any sailing here (Arizona), but I am sending some additional information re your topic/question: Galvanic action is the process of electrolysis that takes place between two dissimilar metals when placed in salt water or non-pure fresh water. Although galvanic action is a problem faced primarily by boats used in salt water, freshwater boaters cannot be totally ignorant of the problem: not all fresh water is chemically pure, and water that is even slightly brackish can set galvanic action into motion. The following is an electrolytic table which rates metals from "most noble" to "least noble." In non-pure water current will flow from the less noble to the more noble metal, and in the process, the less noble metal will be destroyed. Metals close together in the table can be used together. Metals far apart cannot. Yellow brass, for example, is composed of zinc and copper. Over time galvanic action will erode the zinc. For that reason brass screws, valves, etc. would be useless in salt water. mercury monel nickel bronze (silicon) copper brass (red) bronze (aluminum) gun metal brass (yellow) bronze (phosphor) tin lead steel (stainless) iron steel (mild) aluminum cadmium galvanized iron and steel zinc magnesium Regards, Diane Kerr High Barbaree M15 #625

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Carmel M17 S/N
by Steve Shenkel 03 Aug '05

03 Aug '05

The 77 serial number is MMP172630877. I have not looked for hull ID decoding info, but I would guess August 1977 date of manufacture? Steve Shenkel

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New M17 Owner
by Steve Shenkel 03 Aug '05

03 Aug '05

I just picked up a 1977 M17. We had sold our 26 footer earlier this year and I was on a quest to get something that I could stand up in. Go figure! Well the rest of the story is that what I wanted, and what I had available financially, were apart for quite a few dollars and I decided to drop back to my first love (just sailing) and try that for a while. In the mean time, I may save some money, prices may come down, or I may just really enjoy the simplicity of sailing a great boat like the 17. I bought the boat from a man in hospice. The boat had not been sailed in 8 years. However, it had been fairly well protected from the weather. It had 7 sails including a new main that appears never to have been used. Additionally, it has a self steering vane, a sea anchor, and a ton of other stuff including two motors; a 4.5 Johnson, and a fairly new Honda 7.5. I think I will try to get the Johnson running and set the Honda off to the side for future use (standing headroom boat?). I sail around the Phoenix area and it is just miserably hot and a little humid right now. I hope to put the boat in our high bay warehouse at work(where it is air conditioned) to get it reasonable cleaned up and at least sailable for the month of September. I am scheduled for a hip replacement in early October, so I will have to save other projects, like tackling the delightfully modern plaid upholstery, next year. A good friend of mine had a M15 and I remember crewing on a M17 for a series of races. I hope to be a future contributor to this group. In the short term, I hope there are no unexpected surprises and I can get it together well enough to sail. Next year I will probably face the dreaded keel job and will search the archives for your help. BTW, the boat is a unique Carmel/butterscotch color. I suggested to my wife that we name it Carmel Knowledge. I just got the "look" in return. I think you know what I mean. Steve Shenkel Steve Shenkel

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Re: M_Boats: New Boat—what anchor?
by LUDLOWD2＠aol.com 03 Aug '05

03 Aug '05

Justin: I like the claw and have the 4.4 as a lunch hook but in hindsight, go with the next size Don M15 # 620 Sweet Dream

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re: galvanic
by Steve R. 03 Aug '05

03 Aug '05

Craig, Every metal has an associated potential, or voltage property. Here are simplified examples of potential values in sea water: -0.05: 304 Stainless -0.30: Copper -0.76: Aluminum The greater the difference in potential between metals, the faster the rate of corrosion of the metal with the lower number. The lower one is the one with the most negative number. There are three combinations of metal of interest: 1) Stainless and aluminum will cause corrosion in the aluminum. 2) Stainless and copper will cause corrosion in the copper. 3) Copper and aluminum will cause corrosion in the aluminum. However, the rate of corrosion of (3) is less than (1). The fact that the higher metal (stainless) is smaller in size than the lower metal (aluminum) is helpful. If the situation were reversed, that is if you had some sort of aluminum fasteners in a stainless spar, it would corrode faster than an aluminum spar with stainless fasteners. steve Steve R. M-15 #119 Lexington, KY ********************************************* I'd like to know more about galvanic corrosion, if any M-List metallurgists can explain: Why would copper prevent galvanic corrosion between steel and aluminum, and why wouldn't copper cause galvanic corrosion to both?

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Re: M_Boats: Rail Rider
by Larry E Yake 03 Aug '05

03 Aug '05

Thanks for the report, Jeremy! Sounds like you bought a project boat (so did I), but the good thing about a Montgomery is they're worth it. I always shake my head at the ads I see for other boats where the seller lists all the work and expense and upgrades he's done, and is hoping to get $2500 for the boat, motor, and trailer. Good luck on your projects. Like they say, "Do it right, do it once." Larry

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RE: M_Boats: Rail Rider
by Tom Smith 02 Aug '05

02 Aug '05

Great job Jeremy. I'd kill to have that small investment in my M17, believe me. Keep doing as much as you can and sail the hell out of her. t Tom Smith & Jane VanWinkle M15/345--Chukar M17/064--Unnamed -----Original Message----- From: montgomery_boats-bounces+tsmith=nextit.com(a)mailman.xmission.com [mailto:montgomery_boats-bounces+tsmith=nextit.com@mailman.xmission.com] On Behalf Of jiminy Sent: Tuesday, August 02, 2005 3:12 PM To: montgomery_boats(a)mailman.xmission.com Subject: M_Boats: Rail Rider Something I forgot that I did when I got her... I named her! She didn't have a name when I got her. I've never named a boat before.... I hope it doesn't sound conceited or anything, but I'm really proud of myself, every time I think about my boat's name I get a little giddy. :) Well, take care. Jeremy ____________________________________________________ Start your day with Yahoo! - make it your home page http://www.yahoo.com/r/hs _______________________________________________ http://mailman.xmission.com/cgi-bin/mailman/listinfo/montgomery_boats

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Rail Rider
by jiminy 02 Aug '05

02 Aug '05

Something I forgot that I did when I got her... I named her! She didn't have a name when I got her. I've never named a boat before.... I hope it doesn't sound conceited or anything, but I'm really proud of myself, every time I think about my boat's name I get a little giddy. :) Well, take care. Jeremy ____________________________________________________ Start your day with Yahoo! - make it your home page http://www.yahoo.com/r/hs

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Rail Rider
by jiminy 02 Aug '05

02 Aug '05

I bought Rail Rider in December '04. When I got her she needed all new rigging, a lot of scraping on the bottom (the guy who did it said there were big oysters on the keel), and new bottom paint. Luckily, my marina has 1 facility for a boat to be hauled out and worked on. Since I had to drop the mast to have it hauled, I re-rigged it at that time, as well as replaced the anchor light and rewired both the anchor light and the spreader light (for motorsailing at night). I did not replace the chainplates, even though I have obvious cracks throughout them and one crack on the side that actually is starting to tear off the chainplate. I've been sailing it in that condition, with a 2 year old main and a 30+ year old jib taken from a cal 20. Last week I picked up my brand new jib from Art Nelson Sailmakers, but I have banned myself from sailing until I replace the chainplates and get toggles for the turnbuckles (I've been using D-shackles to connect the turnbuckle to the chainplate). Since I have to remove the mast to replace the chainplates, I may go ahead and haul out to redo the bottom paint (I did it way too low at the bow, I get lots of growth there). I may then repaint all topsides, and maybe re-bed all the deck hardware (I see a bit of rust spots around all of them). The only place I probably need new fiberglass is the port cockpit locker, the paint has worn off there and the fiberglass bows when I step in. I also need to make a piece for my stern light to rest on, right now it's screwed directly into the aft of the cockpit sides, so it points off the port stern, and down, instead of straight aft. My engine (a 1987 model Johnson 2.5) probably needs a complete rebuild, or at least all new seals and a carburetor rebuild. I am thinking of just getting a different used motor. Once I get all of that finished, I could revarnish all the wood. Or I could clean up all the dirt and repaint the interior. Of course, I think my keel bolts desperately need replacing. I emailed jerry but haven't gotten a response yet, I'd like to get the 5/8" bolts he talks about. I also think I'd like to replace the masthead, the spreader brackets (and possibly the spreaders as well), install spreader boots (the cal 20 jib got ripped during a sail, every time I tacked the seam got caught on the spreader -- this was during a night sail in Kaneohe bay, a bay known on Oahu for its MANY MANY reefs to run aground on)...I want to replace all the bolts for the swim ladder, mount the engine bracket better (only 2 bolts hold it on), and install a stereo. I also need to get a VHF radio and GPS system. Also I need a solar panel or a wind generator. Plus, after seeing some of the pictures, I'd like to get a bimini top as well. In the future I may get roller furling for the jib. What is it they say about boats? B-O-A-T? Break out another thousand? Haha. I got this boat for $750. The new jib was $425. I don't think I want to put much more than about a grand more into it. Actually I can probably do all the above plus more with that amount. Then I should have one kick ass little sailboat. I work full time and am a full time student. This is why I 'Need' to do all these things instead of having actually done them already. Oh, as far as it's history... I have no idea. I may be able to ask the manager of my marina about it, he said his sister used to own my boat many years ago. I know that 2 years ago, one guy owned it, he replaced the main. Then he sold it to a kid who sailed it with some strands broken off the rigging. Then, luckily, that kid decided to sell it back to a real boater. If I find out any history about it from the marina manager, I'll let you all know. And if anyone has good advice for me in my daunting task, let me know! thanks, jeremy __________________________________________________ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com

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RE: M_Boats: galvanic
by Tom Smith 02 Aug '05

02 Aug '05

I use permatex as well. Regardless of brand however, the higher the copper content the better. Tom Smith & Jane VanWinkle M15/345--Chukar M17/064--Unnamed I use COPPER ANTI-SIEZE lubricant from Permatex. It has worked well so far but I haven't been using it long enough to claim a good test. The stainless screws have been in the aluminum boom for 2 1/2 years - so far no signs of corosion. Thanks Doug --- "Craig F. Honshell" <chonshell(a)ia4u.net> wrote: > > I'm assuming you use that stuff on the threads to prevent galvanic > corrosion, right Doug? What do you use? Thanks, Craig > > ----- Original Message ----- > From: Doug Kelch > To: For and about Montgomery Sailboats > Sent: Friday, July 29, 2005 4:20 PM > Subject: RE: M_Boats: Jiffy reefing system > > Sandra, > > Tod has the link correct. I did not install the cheek block in the > picture. I did put the pad eye in front of the cheek block in for the > second reef point. I do not use pop rivets. I use self taping > stainless steel screws with a corosion preventing grease on the > threads. > > Thanks > > Doug Kelch > > --- htmills(a)bright.net wrote: > > > Sandra, > > > > Perhaps you are thinking of Doug Kelch's funtigo site? > > > > > http://www.funtigo.com/dkelch?b=215326&p=start&c=1802951 > > > > Tod > _______________________________________________ > http://mailman.xmission.com/cgi-bin/mailman/listinfo/montgomery_boats > __________________________________________________ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com _______________________________________________ http://mailman.xmission.com/cgi-bin/mailman/listinfo/montgomery_boats

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