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post #51 of 53 Old 02-18-2009
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Thumbs up Barrier coat on the rudder and no water penetration


After closer inspection last night I found the slop to be in the mechanical side of the system. I had my dad look at it as well he told me to take it apart do the bearnings and it would definately would need to be re shimmedthere was no water in the rudder itself. I am going to be doing a complete bottom job this spring as soon as it starts to warm up would it be recommended to apply a barrier coat to the rudder as well?/QUOTE]


That is good news! As long as you are taking things apart and doing a bottom job I would include the rudder in the process..... you never know what all of that old paint is hiding

Once you get all of the paint off the gelcoat on the rudder you will be able to see what kind of shape it is in. Look for cracks, signs of moisture penetration around the stock where it enters the blade. Also "sound" the rudder with plastic hammer liker we surveyors use or a screwdriver handle to listen for soft spots and signs of delamination. The blade should ring like a "bell" when you sound it.



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post #52 of 53 Old 02-18-2009
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Thanks for the info John. Everything in this boat will be like new when all done here in a few months. I plan on taking the entire steering system apart and have thought about moving the pedestal back approx 4 inches to accomidate a larger wheel to sit on the sides of the cockpit while sailing and comfortably reach the wheel. The only other option would be too use a longer shaft coming out of the pedestal but so far I haven't found anything.

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post #53 of 53 Old 12-19-2015
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Re: Rudder Overhaul

I've got Ranes' old boat Dream Catcher (see first post), and pulled the rudder this year to see how it was doing. It is made out of Schedule 40 6061 T6 aluminium tubing, which has a 2.8" diameter and a wall thickness of about 0.2". I went through the calculations on page 176 of the ABS GUIDE FOR BUILDING AND CLASSING YACHTS. If it was solid aluminum, the minimum diameter where the rudder enters the boat should have been 3.15 inches. I'm assuming that it was just a rebuild of the original design, so no wonder it broke - especially if the corrosion caused pitting at where the stock exits the hull I'm probably going to fill it with a solid piece of 7075 alloy
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