[Public-List] Sail track rivets on mast - SS Machine screws

crufone at comcast.net crufone at comcast.net
Thu Mar 29 19:03:17 PDT 2012 


Gord, 

Made me reminisce about my High School Prom.................... 



----- Original Message -----




From: "Gordon Laco" <mainstay at csolve.net> 
To: "Alberg 30 Public List -- open to all" <public-list at lists.alberg30.org> 
Sent: Monday, March 26, 2012 6:01:18 PM 
Subject: Re: [Public-List] Sail track rivets on mast - SS Machine screws 

And the pedestrian stainless steel rivets lasted many decades.... 

Gord #426 Surprise 

PS - so nobody attacked me for my zipper analogy?? 


On 26/03/12 5:42 PM, "John Birch" <Sunstone at cogeco.ca> wrote: 

> Jeffrey, you are correct, monel (also known as cuprinichol) is absolutely 
> contra indicated on an Aluminum mast. It is much farther apart on the 
> galvanic scale to aluminum than 316 SS 
> 
> Remember, your sail track is SS ( probably 302 or 304) 
> 
> SS is the better route for you. 
> 
> Remember, you are just trying to secure a sail track, not make a battery ; ) 
> 
> Cheers, 
> 
> John 
> 
> 
> 
> ----- Original Message ----- 
> From: "Jeffrey" <fongemie at gmail.com> 
> To: "Alberg 30 Public List -- open to all" <public-list at lists.alberg30.org> 
> Sent: Monday, March 26, 2012 5:30 PM 
> Subject: Re: [Public-List] Sail track rivets on mast - SS Machine screws 
> 
> 
>> Welcome Nicki, 
>> 
>> Thanks for posting. 
>> 
>> As it turns out, Monel rivets are difficult to find here in the US at 
>> reasonable prices. I found a couple of places selling little packages of 
>> three monel rivets for $16! McMaster Carr has "Corrosion-Resistant Blind 
>> Rivets"  made from copper and nickel-copper; not too bad at $6.51 for 10. 
>> 
>> After reading more about Monel, I'm questioning that as a solution in this 
>> case. Wickipedia article claims monel not inert when joined with other 
>> metals, which would make sense. 
>> 
>> "However, because of the problem of 
>> electrolytic<http://en.wikipedia.org/wiki/Electrolytic>action in salt 
>> water (also known as Galvanic 
>> corrosion <http://en.wikipedia.org/wiki/Galvanic_corrosion>), in 
>> shipbuilding monel must be carefully insulated from other metals such as 
>> steel. The New York Times of August 12, 1915 published an article about a 
>> 215 foot yacht, "the first ship that has ever been built with an entirely 
>> monel hull," that "went to pieces" in just six weeks and had to be 
>> scrapped, "on account of the disintegration of her bottom by electrical 
>> action." The yacht's steel skeleton deteriorated due to electrolytic 
>> interaction with the monel." 
>> <http://en.wikipedia.org/wiki/Monel#cite_note-4> 
>> 
>> -Jeff 
>> 
>> Jeff Fongemie 
>> #116 Seagrass 
>> 
>> http://picasaweb.google.com/fongemie 
>> 
>> 
>> 
>> 
>> 
>> 
>> 
>> On Mon, Mar 26, 2012 at 1:56 PM, Nicki Crutchfield 
>> <nickicrutchfield at mac.com 
>>> wrote: 
>> 
>>> Hello all, 
>>> My first post after much reading here. 
>>> Monel is the preferred option here in the UK. It is apparently inert when 
>>> mixed with aluminium and, though more expensive than aluminium ones, I 
>>> wouldn't use stainless. Depends if you are in a salt water environment or 
>>> not. The black goop (whatever it's called) is also the way to. 
>>> There, I've made my maiden post.:) 
>>> Kind regards, 
>>> Nicki. 
>>> 
>>> On 26 Mar 2012, at 18:11, Jeffrey <fongemie at gmail.com> wrote: 
>>> 
>>>> Thanks John. 
>>>> 
>>>> Good idea on using some good with adhesion qualities. 
>>>> 
>>>> -jeff 
>>>> 
>>>> On Mon, Mar 26, 2012 at 1:07 PM, John Birch <Sunstone at cogeco.ca> wrote: 
>>>> 
>>>>> We went 316 SS Machine screws on Sunstone, an A-37, Great Lakes boat. 
>>> Same 
>>>>> mast manufacturer, when we did a major overhaul of the rig. Used 
>>>>> Sikkens 
>>>>> 291, now called something else, but the adhesive version. Felt 
>>>>> locktight 
>>>>> might be too corrosive, TefGel being non adhesive at all. Didn't want 
>>> the 
>>>>> machine screws to work loose. So far, no problems - the work was done 
>>>>> at 
>>>>> Klacko Spars in Bronte Ontario back in 1997. 
>>>>> 
>>>>> Pulled a couple of machine screws to check, after acetoning out the 
>>> holes, 
>>>>> no whitish aluminum oxide present, looked like the threads had been 
>>>>> cut 
>>>>> yesterday. Then rebedded them with more Sikkens. None are loose. 
>>>>> 
>>>>> Haven't taken the boat offshore in the ocean yet, but given the 
>>>>> salinity 
>>>>> of the upper Chesapeake, I imaging it would be just fine. 
>>>>> 
>>>>> Danny Klacko recommended this approach - he does great work and knows 
>>> his 
>>>>> stuff. 
>>>>> 
>>>>> Hope this is a help 
>>>>> 
>>>>> John 
>>>>> 
>>>>> 
>>>>> ----- Original Message ----- From: "Jeffrey" <alberg30nh at gmail.com> 
>>>>> To: "Alberg 30 Public List -- open to all" 
>>>>> <public-list at lists.alberg30. 
>>> ** 
>>>>> org <public-list at lists.alberg30.org>> 
>>>>> Sent: Monday, March 26, 2012 12:44 PM 
>>>>> Subject: [Public-List] Sail track rivets on mast 
>>>>> 
>>>>> 
>>>>> Hi everyone, 
>>>>>> 
>>>>>> I need to do something about the main sail track. I know many of the 
>>>>>> rivets 
>>>>>> are bad, last season we kept finding rivets heads on the deck! 
>>>>>> 
>>>>>> I've read through past messages in the list archives to see what 
>>>>>> others 
>>>>>> have done. I can't decide between hunting down monel rivets, tapping 
>>> for 
>>>>>> SS 
>>>>>> machine screws or just keeping replacing aluminum with aluminum.  I 
>>> like 
>>>>>> the idea of ss machine screws but I'm concerned about corrosion even 
>>> with 
>>>>>> the use of products like TefGel. 
>>>>>> 
>>>>>> Has there been some newly formed consensus on the subject? Anyone go 
>>> the 
>>>>>> machine screw route and find it became a problem due to corrosion of 
>>> the 
>>>>>> threads in the aluminum holes? 
>>>>>> 
>>>>>> -Jeff 
>>>>>> 
>>>>>> Jeff Fongemie 
>>>>>> #116 Seagrass 
>>>>>> 
>>>>>> http://picasaweb.google.com/**fongemie< 
>>> http://picasaweb.google.com/fongemie> 
>>>>>> ______________________________**_________________ 
>>>>>> These businesses support your Association: 
>>>>>> http://www.alberg30.org/store/**A30supporters.html< 
>>> http://www.alberg30.org/store/A30supporters.html> 
>>>>>> Please support them. 
>>>>>> ______________________________**_________________ 
>>>>>> Public-List mailing list 
>>>>>> Public-List at lists.alberg30.org 
>>>>>> http://lists.alberg30.org/**listinfo.cgi/public-list-**alberg30.org< 
>>> http://lists.alberg30.org/listinfo.cgi/public-list-alberg30.org> 
>>>>>> 
>>>>>> 
>>>>> 
>>>>> ______________________________**_________________ 
>>>>> These businesses support your Association: 
>>>>> http://www.alberg30.org/store/**A30supporters.html< 
>>> http://www.alberg30.org/store/A30supporters.html> 
>>>>> Please support them. 
>>>>> ______________________________**_________________ 
>>>>> Public-List mailing list 
>>>>> Public-List at lists.alberg30.org 
>>>>> http://lists.alberg30.org/**listinfo.cgi/public-list-**alberg30.org< 
>>> http://lists.alberg30.org/listinfo.cgi/public-list-alberg30.org> 
>>>>> 
>>>> 
>>>> 
>>>> 
>>>> -- 
>>>> Jeffrey Fongemie 
>>>> _______________________________________________ 
>>>> These businesses support your Association: 
>>>> http://www.alberg30.org/store/A30supporters.html 
>>>> Please support them. 
>>>> _______________________________________________ 
>>>> Public-List mailing list 
>>>> Public-List at lists.alberg30.org 
>>>> http://lists.alberg30.org/listinfo.cgi/public-list-alberg30.org 
>>> 
>> 
>> 
>> 
>> -- 
>> Jeffrey Fongemie 
>> _______________________________________________ 
>> These businesses support your Association: 
>> http://www.alberg30.org/store/A30supporters.html 
>> Please support them. 
>> _______________________________________________ 
>> Public-List mailing list 
>> Public-List at lists.alberg30.org 
>> http://lists.alberg30.org/listinfo.cgi/public-list-alberg30.org 
>> 
> 
> 
> _______________________________________________ 
> These businesses support your Association: 
> http://www.alberg30.org/store/A30supporters.html 
> Please support them. 
> _______________________________________________ 
> Public-List mailing list 
> Public-List at lists.alberg30.org 
> http://lists.alberg30.org/listinfo.cgi/public-list-alberg30.org 


_______________________________________________ 
These businesses support your Association: 
http://www.alberg30.org/store/A30supporters.html 
Please support them. 
_______________________________________________ 
Public-List mailing list 
Public-List at lists.alberg30.org 
http://lists.alberg30.org/listinfo.cgi/public-list-alberg30.org 

 1333072997.0

More information about the Public-List mailing list