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Danger, Will Robinson!!
Posted: Sun Aug 07, 2011 4:35 pm
by mcrandall
Posted: Sun Aug 07, 2011 7:51 pm
by CaptainScott
OMG!
I about spewwed as I pictured the ole robot with his arms flailing around!
Most excellent post and a great way to get the folks looking!
GREAT info and photos! THANK YOU!
Scott
Posted: Mon Aug 08, 2011 4:31 am
by NYCSAILOR
wow, that fitting should be brass or something more durable to handle the chafe of the cable... good find.. Looks like you found that jsut in time.. EVERYONE BACK IN THE SPACESHIP..
Posted: Mon Aug 08, 2011 8:55 am
by Capt. Bondo
It would be great to know what the actual size is on all three of the thru-hull fittings and where we can get replacements.
Posted: Mon Aug 08, 2011 9:20 am
by mcrandall
The inside diameter of the Rudder fitting is 1.5 inches. I picked up a marelon fitting from West Marine off the shelf for about $25 and a bronz one from my local Torreson's Marine (they do web orders as well.)
Both will have to be modified as they have installation tabs (vice slots on the old ones) so you can get a hold of them while tightening the nuts. Easy to grind off, so not an issue.
Here's my delemma. The shaft of the rudder is alluminum, I believe. Bronz and alluminum are far enough apart on the anodic chart to cause problems. Any advice?

Posted: Mon Aug 08, 2011 12:15 pm
by EmergencyExit
This one can get to be like discussing lightning, different viewpoints sure do exist..so I can only repeat what I've read..
If I recall right bronze is more noble than aluminum, and will cause the aluminum to slowly disappear. Solution would be to introduce another less noble metal into the mix such as zinc bonded to the other two. Then both the bronze and the aluminum would eat the zinc. Once the zinc was gone (and if not replaced) the bronze would slowly attack the aluminum..
May not even be much of an issue on a dry sailed boat, but worth discussing for sure !..
Posted: Mon Aug 08, 2011 12:31 pm
by gregcrawford
Please see my webshots album below. You can see that I carefully machined a nylon bushing to go inside the bronze through hull for the rudder. After all that, I ended up just using the original plastic one. It worked for 36 years, and it had a little flex to it. I just wasn't comfortable trying to outguess Halsey Herreshoff.
http://sports.webshots.com/album/575918556pvEVVg
I replaced the sink through hull with an honest to goodness seacock for my washdown pump. Best money I have spent on the boat so far. It allows me to wash the boat at the dock any time, plus squirt anybody I can catch.
Posted: Mon Aug 08, 2011 12:40 pm
by EmergencyExit
gregcrawford wrote:plus squirt anybody I can catch.
lol, perfect !
Posted: Mon Aug 08, 2011 5:16 pm
by mcrandall
Hmmmm. Turns out the plastic ones are not really 1.5 inch openings. 1 and 3/8 actual.
So, back to the drawingboard. I ordered the next size, 2-inch, that has inside opening sufficient for my rudder post. But that will require opening the hull a bit for it to fit.
Or I just go with the bronze fitting with sacrificial anodes--thanks EE.
Love the application, Greg!
