Steering Loss Continued... Corrosion Q - SailNet Community
 
LinkBack Thread Tools
post #1 of 4 Old 07-11-2008 Thread Starter
Senior Member
 
montenido's Avatar
 
Join Date: May 2008
Location: Los Angeles area
Posts: 323
Thanks: 0
Thanked 1 Time in 1 Post
Rep Power: 8
 
Steering Loss Continued... Corrosion Q

Hi all, finally got down to the Sundance to take a look at the steering to see what failed last week. It turns out that one of the anchors for the cables that attach to the rudder shaft failed, apparently from corrosion. The Edson helm uses a cast aluminum wheel that mounts to the rudder post. The control cables wrap around this wheel and terminate in molded "lugs", which have holes drilled into them and which the cable ends thread into. One of these "lugs" broke off, leaving me with no steering. I spoke with someone at Edson and they were helpful. A new wheel will cost about $250, not too bad. I cannot remove the old one in one piece, so I am going to try to salvage it by installing SS eyebolts on either side of the lug. The threaded cable end will still be able to attach in the same spot. I am not too sure of durability, but it will be easy to monitor. If it doesn't work, I am only out about $8 in SS parts. That brings me to my big question, how do you free up corroded parts? The rudder shaft looks like SS and the rudder wheel is aluminum. 27 years later, the parts do not want to part with each other. Is there a good spray that frees up parts like this?

Thanks for any help on this.

montenido

Odyssey, '79 CSY 44 Cutter
Channel Islands, CA


"There is no unhappiness like the misery of sighting land (and work) again after a cheerful, careless voyage."
Mark Twain
montenido is offline  
Quote Quick Reply Share with Facebook
Sponsored Links
Advertisement
 
post #2 of 4 Old 07-11-2008
Senior Member
 
Join Date: Sep 2006
Location: Scotland
Posts: 2,364
Thanks: 0
Thanked 11 Times in 11 Posts
Rep Power: 9
 
Mont...

Do you have a wee picture?

My own wheel is stainless to stainless, and 32 years on, it slides off easily but stainless and aluminium are notorious for quarrelling like this.

Releasing fluid will help, and you may have to use a little heat, and hammering. Don't roast the stainless too hot as it tends to lose its corrosion resistance if overheated with a flame.
Rockter is offline  
Quote Quick Reply Share with Facebook
post #3 of 4 Old 07-11-2008
Senior Member
 
Join Date: Jul 2008
Location: Jacksonville, Fl
Posts: 317
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 7
 
The product PB Blaster is about the best penetrating spray I've found, but, alas, it may or may not work on a s/s to aluminum bond.

I'll go along with a judicious amount of heat and a hammer. These might work, but have patience, and remember that aluminum has a low melting point. Much lower than s/s.

Finally, when you're reassembling everything, put it together using Loctite 242 (the blue stuff). I know this seems to defy reason, but putting a coat of Loctite on a s/s fitting that's going into aluminum somehow prevents the bonding process that normally takes place.

Cap'n Gary
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
Gary1 is offline  
Quote Quick Reply Share with Facebook
post #4 of 4 Old 07-11-2008
Telstar 28
 
sailingdog's Avatar
 
Join Date: Mar 2006
Location: New England
Posts: 43,290
Thanks: 0
Thanked 14 Times in 12 Posts
Rep Power: 14
         
I don't think a penetrating oil is going to help much. You should probably use heat—either a heat gun or even boiling water might do the trick.

When you're reassembling it, don't use Loctite. Use TefGel or LanoCote. These are designed to prevent galvanic corrosion between dissimilar metals and are not adhesive in nature. Loctite is basically a cyanocrylate adhesive compound which is primarily designed to glue the two pieces together, making future separation more difficult than TefGel or LanoCote would. If it were a SS screw going into an aluminum piece, as you might be doing on your repair jury rig, Loctite would make sense, but not for two pieces that are supposed to be friction fit and then held in place by a set screw.

Even if your steering quadrant was stainless steel going on a stainless steel shaft, I'd recommend using TefGel or LanoCote, since Stainless Steel has a tendency to gall when two pieces are in contact.

Sailingdog

To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.

Telstar 28
New England

You know what the first rule of sailing is? ...Love. You can learn all the math in the 'verse, but you take
a boat to the sea you don't love, she'll shake you off just as sure as the turning of the worlds. Love keeps
her going when she oughta fall down, tells you she's hurting 'fore she keens. Makes her a home.

—Cpt. Mal Reynolds, Serenity (edited)

If you're new to the Sailnet Forums... please read this
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
.

Still—DON'T READ THAT POST AGAIN.
sailingdog is offline  
Quote Quick Reply Share with Facebook
Reply

Quick Reply
Message:
Options

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
Steering System Spring Checkup Tom Wood Gear and Maintenance Articles 0 04-26-2004 08:00 PM
Checking the Wheel Steering System Will Keene Gear and Maintenance Articles 0 07-31-2002 08:00 PM
Emergency Steering John Kretschmer Seamanship Articles 0 03-08-2002 07:00 PM
Emergency Steering John Kretschmer Gear and Maintenance Articles 0 03-08-2002 07:00 PM
Emergency Steering John Kretschmer Cruising Articles 0 03-08-2002 07:00 PM

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