Rusted out CB hanger

[opie]

After 5 years trailering in and out of salt water, my centerboard SS hanger rusted out in two places and the upper SS pin that is welded in place was hanging on by only a small piece of weld. So I ordered a new hanger from BWY (thanks for being there Blue Water, great service).

Before I install it, is there any recommendation to protect it with paint or grease or anything else? Thanks,,,

[kmclemore]

I guess I'd coat it with Hammerite paint, since I've found that coating to be highly resistant to rust (*real* Hammerite brand paint, not Rustoleum's 'hammered finish' paint... they are very different). Hammerite isn't easy to find, and it ain't cheap, but it works better than any other rust-preventative paint I've ever used. And BTW, cleanup solvent is *not* lacquer thinner or mineral spirits... they won't work... you need to use either acetone or 1,1,1-trichloroethane.

http://www.jamestowndistributors.com/us ... ray+paints



I wouldn't bother to grease the pivot, since it won't stay on there for any real length of time anyway, and will only attract grit for the time it's on there.

Other than that, how is the hole in your CB? If it is sloppy, you might consider one of the CB repair mods on this site... several routes have been outlined... you're likely to find them under Mac Mods, but some are actually in the forum, too.

And for those of you with MacX boats, I'd suggest you buy one of these hangers and put it in stock. It's one of those critical parts that *will* eventually fail, so if you're planning to keep your boat for an extended time, you should get one... there's no telling when they will stop making MacX parts, but since the boat has been out of production for many years now, there's a good chance that critical parts are going to start going into short supply, or perhaps not being available at all anymore. Most other parts come from outside suppliers and can be found on the open market, so they are not a real concern, but this is one of the few items that are exclusive to Mac's.

[opie]

Since Kmc laid out what to do, I thought I would elaborate on the part picture.
Here it is from BWYachts (Note- this website's parts list does not work with Google Chrome on my computer. I had to use Firefox or IE.)

[MadMacX]

It's pretty common for stainless steel to rust around areas that have been welded. From what I have been told, it has something to do with breaking down the film that protects stainless,...or heals it, as they say in the trade. When I had my bracket out I found surface rust in the same area. I cleaned it with a stainless brush, and called it good to go.

I believe that Kevin's idea has merit though. If you keep air away from the welded area, I doubt that it will be able to attack the welded surface and thereby keep the rust from developing. It should also be noted that the cheaper types of stainless will rust and given Roger's propensity toward saving a dollar, well......

Pat

[Capt Capsize]

If you really want to get crazy you can do what the government does . Stainless steel in harsh military environments requires a process called passivation and neutralization when stainless is cut or welded. It is a PITA but it also works to clean up corroded stainless. It requires washing/soaking in a 10% nitric acid solution followed rinsing in a base solution (washing or baking soda will do) to neutralize the acid. I have heard the passivation removes all elements from the surface except for the Nickel component of SS. I have personally used the process and was amazed at the result.

Caution Nitric Acid is really nasty stuff don’t try it unless you are very familiar with chemical handling and have the proper safety gear. A better option would be to have it done. There are many metal plating shops are set up to perform this process. If I were anywhere near salt water I would consider it for parts that are not readily visible.

[quintamala]

I´ve been searching on the forum for mods related with the centerboard system. Also I googled in themes and pictures but couldn´t find any help to find correct measurements.
OK..: I plan to order a hull clean and paint at shore installations in a few weeks. In order to replace the "HANGER BRACKET"+"PIVOT PIN" as well as the "VALVE SHAFT" on the ballast system, I need to find (or order to a local welder)those pieces prior to any painting.
¿Do you know where I can find measuring data or supplies for those items?.
I found the centerboard diagram here:

The "VALVE SHAFT" is on the 1996 MacX on "resources" bar.
Thanks in advance

[Rick Westlake]

Quintamala,

The centerboard hanger is still in the Blue Water Yachts online catalog.Their URL is http://www.bwyachts.com and you will need to use Microsoft Internet Explorer, Firefox or Opera as your web browser.

Here is what I found in the Blue Water Yachts online catalog:



You can find the valve shaft from the same source. No need to call a welder, just order the parts from BWYachts....

Hope this helps!

[Laika 26X]

I replaced mine last season.
While I wasn't to worried about the hanger itself, the old 3M Sealant on the "wet" side of the housing proved to be a royal PITA
There was quite a bit there (more so than my previous ), and the CB did not seem to sit as flush as it had prior to the swap out.
As I often take advantage of the capability for the boat to ground when the tide goes out, I was concerned about creating undue stress on the hanger by LAIKA resting on the CB as opposed to LAIKA setting on her hull.

Others care to comment?

FWIW,
I suggest you remove as much old sealant as you can, reapply, then install. But it's tough getting up in there!!

"Sub" Ed Tordahl
S/V LAIKA
USCG Auxiliary
Qualified Crew
Qualified Aids (Nav) Verifier
Qualified Public Education Instructor
NYS Qualified Safe Boating Instructor

[quintamala]

Thanks to all for your inputs.
I will try to buy those parts from store. It´s going to be hard as I live in Spain (.. mailing/customs etc.,).
Thanks a lot

[Hamin' X]

Thanks to all for your inputs.
I will try to buy those parts from store. It´s going to be hard as I live in Spain (.. mailing/customs etc.,).
Thanks a lot

You might want to update you profile, to reflect you location and boat type. It makes it much easier to answer questions. I understand your problem with importing items. Perhaps you have a friend that travels to the US?

~Rich

[vizwhiz]

Is this arrangement used on the older S boats? I'm wondering if I should crawl under there and try to check it while I have the boat in the yard...

[quintamala]

Thanks to all for your inputs.
I will try to buy those parts from store. It´s going to be hard as I live in Spain (.. mailing/customs etc.,).
Thanks a lot

You might want to update you profile, to reflect you location and boat type. It makes it much easier to answer questions. I understand your problem with importing items. Perhaps you have a friend that travels to the US?

~Rich

That´s right!!.. Sorry about my profile. When I first became a member I was about to move from Canary Islands to Spain. So I decide to update later (but I forgot). Now I´m retired and stop from "hanging around". Being in the Navy has those litle handicaps...
Thanks.

[quintamala]

Is this arrangement used on the older S boats? I'm wondering if I should crawl under there and try to check it while I have the boat in the yard...

I forgot:
When I bought my 1997 I revised all metal parts below water line. I remove the CB and "hanger", "CB pivot" as well as ballast valves and rubber seals. I used SIKAFLEX marine sealant for all the jobs (I don´t know if there is such a sealant in other countries but it works great. The hole for the CB HANGER on my boat was kind of difficult to access, but I made the work using long players, screwdrivers and solvents. As I say: I don´t remember having big trouble to remove old sealant and apply the new one.
My concern are metal pieces (corrosion).... I don´t want to be out there and loose the CB support charging all weight on the CB rope. I´d better prevent it before it´s too late.
I use a rope made of the same material as those used to climb mountains (I´m sure you know what I´m talking about). I check it perodically and it seems to resist for a long time.