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Old 11-15-2013
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bedding rudder gudgeons

I'm rebedding all the deck hardware on my Catalina 22, and I'd like to do the rudder next. It's a '79 and I'm pretty sure it's never been done.

What do the experts recommend, Sikaflex 291? Butyl tape? 5200?
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Re: bedding rudder gudgeons

I would like to hear about this as well.
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Old 11-15-2013
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Re: bedding rudder gudgeons

Maine Sail doesn't recommend his butyl tape for under water applications. The lower gudgeon goes under water in some conditions.

5200 will permanently adhere them. You don't want that, they need to be replaceable.

I used LifeCalk on my Catalina 25. Any polysulfide should be fine. 4200 should also work, I just prefer working with LifeCalk.

I don't know if this is true on the Catalina 22, but on the Catalina 25 the backing plate for the gudgeons is buried inside the transom. The best way to access it is to use a hole saw to add a big hole, then put a deck plate over it. This shows the process on the Catalina 25:
How to replace upper gudgeon on Catalina 25

They used a jigsaw instead of a hole saw. It works, it just isn't as clean. It looks like the C-22 is the same way:
1989 CATALINA 22 WING KEEL..........CjAndeai: The Gudgeon Replacement; Can you say, @#&%
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Re: bedding rudder gudgeons

I to used lifecalk on my 85 catalina 25. as alex w said I had to cut a hole to grt to the upper grudon. what really surprised me was that there were no backing plates, just washers and a nut. I cut the angle off of the old grudon and used the plate as a backing. this way the holes for the bolts lined up perfectly.
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Re: bedding rudder gudgeons

That's weird, my 84 Catalina 25 had a bronze backing plate. It had no nuts, the backing plate was threaded.
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Old 11-15-2013
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Re: bedding rudder gudgeons

My '74 C22 had no backing plate, just washers. I upgraded them to gigantic washers, 316 stainless fasteners, and nylock nuts.

I bedded the gudgeons with 4200, but I can't say I recommend it as they still leaked afterwards! Perhaps there is just too much movement and a heavy duty backing plate is needed.

One problem is that it's hard to get a rigid attachment because the bolts go through the hull and the liner, but there is nothing between the two- just open space. So the liner which is thin and flexible is supporting the tension on the bolts.

You should be able to access the gudgeon nuts through the port side cockpit locker.

Last edited by casioqv; 11-15-2013 at 03:12 PM.
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