Rust stains at partners? - SailNet Community
Reply
 
LinkBack Thread Tools
post #1 of 11 Old 12-18-2013 Thread Starter
Senior Member
 
L124C's Avatar
 
Join Date: Oct 2007
Posts: 1,409
Thanks: 51
Thanked 4 Times in 4 Posts
Rep Power: 8
 
Rust stains at partners?

I installed Spartite several years ago and it has worked well. Recently the silicone seal I put around the outside (as instructed) has started to leak. No big deal, I simply resealed it.

What concerns me is what appears to be rust stains coming down the mast below the partners, from where it was leaking. The stains are not visible above deck. The mast and partners are aluminum. Other than Spartite and silicone the only other substance used was the Vaseline Spartite says to lubricate the partners with.
Any thoughts on the stains?
EDIT: Updated 7/15 Post 11.

Last edited by L124C; 3 Weeks Ago at 12:46 AM.
L124C is offline  
Quote Quick Reply Share with Facebook
Sponsored Links
Advertisement
 
post #2 of 11 Old 12-19-2013
Senior Member
 
Delta-T's Avatar
 
Join Date: Oct 2013
Posts: 532
Thanks: 34
Thanked 40 Times in 35 Posts
Rep Power: 2
 
Re: Rust stains at partners?

I understand the upload is not working correctly. Most use Photo bucket for upload and then use the mountain icon on the top of SN post Message edit menu. Sorry can't help you with your rust issue.

Eric
Delta-T
1968 Bristol 32 Keel/Crb Hull 26
Narragansett Bay RI USA
Delta-T is offline  
Quote Quick Reply Share with Facebook
The Following User Says Thank You to Delta-T For This Useful Post:
L124C (12-20-2013)
post #3 of 11 Old 12-20-2013
Senior Member
 
Join Date: Sep 2013
Location: Muskegon, Mich
Posts: 241
Thanks: 2
Thanked 17 Times in 15 Posts
Rep Power: 2
 
Ive got the same brown goo oozing from a couple of places under the deck of my 1969 Columbia 36. Its not rust, I think its color leaching out of the balsa core and/or polyester resin. If you take the whole works apart and seal the edges of the hole with epoxy, you should stop getting three stains. While you've got it apart, check for water intrusion into the deck core.
capt jgwinks is offline  
Quote Quick Reply Share with Facebook
The Following User Says Thank You to capt jgwinks For This Useful Post:
L124C (12-21-2013)
post #4 of 11 Old 12-20-2013
Senior Member
 
Join Date: Dec 2013
Posts: 321
Thanks: 5
Thanked 24 Times in 23 Posts
Rep Power: 2
 
Re: Rust stains at partners?

I'm guessing it's from your deck core.
IStream is offline  
Quote Quick Reply Share with Facebook
post #5 of 11 Old 12-21-2013 Thread Starter
Senior Member
 
L124C's Avatar
 
Join Date: Oct 2007
Posts: 1,409
Thanks: 51
Thanked 4 Times in 4 Posts
Rep Power: 8
 
Re: Rust stains at partners?

Quote:
Originally Posted by capt jgwinks View Post
Ive got the same brown goo oozing from a couple of places under the deck of my 1969 Columbia 36. Its not rust, I think its color leaching out of the balsa core and/or polyester resin. If you take the whole works apart and seal the edges of the hole with epoxy, you should stop getting three stains. While you've got it apart, check for water intrusion into the deck core.
Jeeez...I don't know which is worse, rust or color oozing from the core!
The only problem I have with that theory, is that the partners consist of a aluminum collar that lines entire the deck opening. I'll have to examine the partners topside with your theory in mind.
L124C is offline  
Quote Quick Reply Share with Facebook
post #6 of 11 Old 12-21-2013
Reward for lost Kraken!
 
hellosailor's Avatar
 
Join Date: Apr 2006
Posts: 11,481
Thanks: 5
Thanked 132 Times in 129 Posts
Rep Power: 11
   
Re: Rust stains at partners?

I suspect the answer in all cases is that something is wrong, and you'll need to pull the mast, inspect, and repair. If that's deck, you may find extensive work to be done. And at the same time, might as well have the mast & fittings inspected, do whatever else can be done while it is down. Replace the bulbs in the masthead lights while they're at hand, too.

It sure looks like rust to me, but I've been surprised before.
hellosailor is offline  
Quote Quick Reply Share with Facebook
post #7 of 11 Old 12-22-2013 Thread Starter
Senior Member
 
L124C's Avatar
 
Join Date: Oct 2007
Posts: 1,409
Thanks: 51
Thanked 4 Times in 4 Posts
Rep Power: 8
 
Re: Rust stains at partners?

Quote:
Originally Posted by hellosailor View Post
I suspect the answer in all cases is that something is wrong, and you'll need to pull the mast, inspect, and repair. If that's deck, you may find extensive work to be done. And at the same time, might as well have the mast & fittings inspected, do whatever else can be done while it is down. Replace the bulbs in the masthead lights while they're at hand, too. It sure looks like rust to me, but I've been surprised before.
It's time to pull the stick for several reasons so that's no big deal.
However, I'm thinking about solutions if it does turn out to be rust. Is it even possible that aluminum could rust like that?
I'm wondering if lack of oxygen due to the Spartite could create a condition similar to crevice corrosion in Stainless. I researched Spartite prior to using it and never saw that possibility mentioned.

Last edited by L124C; 12-22-2013 at 11:40 AM.
L124C is offline  
Quote Quick Reply Share with Facebook
post #8 of 11 Old 12-22-2013
Senior Member
 
Delta-T's Avatar
 
Join Date: Oct 2013
Posts: 532
Thanks: 34
Thanked 40 Times in 35 Posts
Rep Power: 2
 
Re: Rust stains at partners?

Never seen alum rust like that. I have done some research on stainless steel and have seen mention to it needing oxygen. I just removed a SS bolt and it was rusting real bad and had no oxygen.

"The basic resistance of stainless steel occurs because of its ability to form a protective coating on the metal surface. This coating is a "passive" film which resists further "oxidation" or rusting. The formation of this film is instantaneous in an oxidizing atmosphere such as air, water, or other fluids that contain oxygen. Once the layer has formed, we say that the metal has become "passivated" and the oxidation or "rusting" rate will slow down to less than 0.002" per year (0,05 mm. per year).

Unlike aluminum or silver this passive film is invisible in stainless steel. It's created when oxygen combines with the chrome in the stainless to form chrome oxide which is more commonly called "ceramic". This protective oxide or ceramic coating is common to most corrosion resistant materials" Quote from: http://www.mcnallyinstitute.com/04-html/4-1.html

Eric
Delta-T
1968 Bristol 32 Keel/Crb Hull 26
Narragansett Bay RI USA

Last edited by Delta-T; 12-22-2013 at 12:01 PM.
Delta-T is offline  
Quote Quick Reply Share with Facebook
post #9 of 11 Old 12-22-2013
Reward for lost Kraken!
 
hellosailor's Avatar
 
Join Date: Apr 2006
Posts: 11,481
Thanks: 5
Thanked 132 Times in 129 Posts
Rep Power: 11
   
Re: Rust stains at partners?

Aluminum is incapable of rusting. Rust is slow oxidation of iron, and iron only. Aluminum can and will oxidize, normally forming an extremely thin and hard aluminum oxide coating, which seals it like a glaze and prevents further damage. When or if it does not seal, it forms a white powder instead, and only a very white powder.

So whether you call that rust or not--it won't be the color of iron rust. Not from an aluminum mast.

Maybe there's a steel track? Or steel screws holding a track into the mast? Or some other steelwork hiding in there?

Last edited by hellosailor; 3 Weeks Ago at 11:38 AM.
hellosailor is offline  
Quote Quick Reply Share with Facebook
post #10 of 11 Old 12-22-2013 Thread Starter
Senior Member
 
L124C's Avatar
 
Join Date: Oct 2007
Posts: 1,409
Thanks: 51
Thanked 4 Times in 4 Posts
Rep Power: 8
 
Re: Rust stains at partners?

Looking at the partners topside didn't reveal anything.
For what it's worth, I took this shot of the Cowling opening from below, which is nine inches from the mast. The darker wood on top is a spacer for the cowling.
Core seems dry, though I can dent it with my fingernail. Certainly no stains at the opening.

Last edited by L124C; 12-22-2013 at 12:27 PM.
L124C is offline  
Quote Quick Reply Share with Facebook
Reply

Tags
mast , partners , rust , spartite , yankee 30

Quick Reply
Message:
Options

By choosing to post the reply above you agree to the rules you agreed to when joining Sailnet.
Click Here to view those rules.

Register Now



In order to be able to post messages on the SailNet Community forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.
Please note: After entering 3 characters a list of Usernames already in use will appear and the list will disappear once a valid Username is entered.


User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:
OR

Log-in









Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.




Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page



Similar Threads
Thread Thread Starter Forum Replies Last Post
Removing rust stains from "Starboard" TakeFive Gear & Maintenance 19 12-21-2013 02:55 PM
Looking for sailing partners. jeffgoldberg Introduce Yourself 7 11-25-2011 02:12 PM
Removing rust stains on sails harpguitar Gear & Maintenance 10 06-02-2010 02:10 PM
deck stains/green spots/and a little rust QuickMick Gear & Maintenance 6 11-05-2009 11:44 AM
Rust stains on sails tybert Introduce Yourself 0 07-02-2008 11:30 AM

Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On
Trackbacks are On
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome