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post #1 of 7 Old 02-23-2007 Thread Starter
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Rudder Assembly Description

I have a '64 CAL 30, spade rudder. I have a new rudder that came in to replace the ripped off old one, however, I have no idea how this attaches or what pieces I am missing from when it was torn off. Does anybody have a diagram or can kinda describe the "typical" way a spade rudder/steering assembly attaches? Any knowledge in general would be a huge help.

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post #2 of 7 Old 02-23-2007
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A stock of a true spade rudder is installed inside a tube that passes through the hull and it may extend up through the cockpit sole or deck, or it may be built in two sections so that the rudder shaft is exposed below deck for installation of a steering quadrant. This tube is the major structural element that supports the rudder. It is absolutely essential that it be solidly supported at all points and that its wall thickness not be compromised in any way. It must resist all of the loads that are transferred to the hull by the action of the rudder.


Once the rudder stock (shaft) is in place inside the tube, it must be retained, usually by a thrust bearing and collar that is applied at the top of the stock so that the rudder will not fall out of the boat. Usually, lubrication is applied both at the thrust bearing and between the rudder stock and the interior wall of the tube.

Last edited by Goodnewsboy; 02-23-2007 at 08:36 PM.
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post #3 of 7 Old 02-23-2007
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I never did the job but I have some pics of my 1984 Cal 24. Might give ya some insight. Btw, the nest has been removed. These were pre-purchase pics.




Those grand fresh-water seas of ours - Erie, and Ontario, and Huron, and Superior, and Michigan, - possess an ocean-like expansiveness...They contain round archipelagoes of romantic isles...they have heard the fleet thunderings of naval victories...they know what shipwrecks are, for out of sight of land, however inland, they have drowned full many a midnight ship with all its shrieking crew. --from Moby Dick
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post #4 of 7 Old 02-23-2007
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Might be easier to see like this.




Those grand fresh-water seas of ours - Erie, and Ontario, and Huron, and Superior, and Michigan, - possess an ocean-like expansiveness...They contain round archipelagoes of romantic isles...they have heard the fleet thunderings of naval victories...they know what shipwrecks are, for out of sight of land, however inland, they have drowned full many a midnight ship with all its shrieking crew. --from Moby Dick

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post #5 of 7 Old 02-23-2007
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Hawkwind:

It looks like you had some structural issues to deal with.
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post #6 of 7 Old 02-26-2007
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I didn't do anything but clean and I didn't notice any problems last year. The picture looks nasty cause the boat had been sitting unused for about 5 years. There is no crack, just stains and worn bottom paint. Here's a cleaner pic.


Those grand fresh-water seas of ours - Erie, and Ontario, and Huron, and Superior, and Michigan, - possess an ocean-like expansiveness...They contain round archipelagoes of romantic isles...they have heard the fleet thunderings of naval victories...they know what shipwrecks are, for out of sight of land, however inland, they have drowned full many a midnight ship with all its shrieking crew. --from Moby Dick
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post #7 of 7 Old 02-26-2007
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Quote:
Originally Posted by Goodnewsboy
Hawkwind:

It looks like you had some structural issues to deal with.
From the pictures, all of the "structural issues" looks like old shrink wrap you see him lifting up in the first picture.
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