Rudder Assembly Description

wallybygolly · #1 (**permalink**) 02-23-2007

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.

Thanks.

Goodnewsboy · #2 (**permalink**) 02-23-2007

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.

Hawkwind · #3 (**permalink**) 02-23-2007

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.

Hawkwind · #4 (**permalink**) 02-23-2007

Might be easier to see like this.

Goodnewsboy · #5 (**permalink**) 02-23-2007

Hawkwind:

It looks like you had some structural issues to deal with.

Hawkwind · #6 (**permalink**) 02-26-2007

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.

ColinV · #7 (**permalink**) 02-26-2007

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.