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delling3
Deckhand

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USA
13 Posts

Initially Posted - 04/06/2022 :  10:19:01  Show Profile  Reply with Quote
Tried searching for this, but didn't find anything. I am sure it's been covered before. I am replacing the gudgeons on my '85 C-25. Does anyone know when Catalina switched over to a glassed in threaded mounting plate, as opposed to nuts and backing washers? I would prefer not to have to cut an access port to change out the fastners!

Thanks in advance.

islander
Master Marine Consultant

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USA
3932 Posts

Response Posted - 04/06/2022 :  11:10:17  Show Profile  Reply with Quote
If your talking about that bronze plate that the screws threaded into I dont remember mine being glassed in. I think they were just barely held there by some caulk. Those plates aren't very thick and only have a few threads in them so putting washers and Nylock nuts over the plates is a good idea. You can check what your boat has by removing the teak access panel at the back of the berth. you can see/feel the lowerer plate and nuts if any there. You only need to cut an access hole for the upper gudgeon.

Scott-"IMPULSE"87'C25/SR/WK/Din.#5688
Sailing out of Glen Cove,L.I Sound


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waterbaby
Navigator

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USA
168 Posts

Response Posted - 04/06/2022 :  11:32:34  Show Profile  Reply with Quote
Hey Scott, that's a great picture! Can you tell me how much space do you have to work with between the liner and the hull? In you picture it looks like there's almost no space at all.

1986 TR/SK #5250 Sunshine
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islander
Master Marine Consultant

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USA
3932 Posts

Response Posted - 04/06/2022 :  17:36:21  Show Profile  Reply with Quote
I would guess that it was @ 3-4". Look how wide the transom is where the tiller crosses over it. That can give you an idea. If you look closely at the photo you will see that I had to cut a notch in the inspection port flange to clear the bronze plate and the two outside bolts/nuts.

Scott-"IMPULSE"87'C25/SR/WK/Din.#5688
Sailing out of Glen Cove,L.I Sound



Edited by - islander on 04/06/2022 17:47:25
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Stinkpotter
Master Marine Consultant

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Djibouti
8891 Posts

Response Posted - 04/06/2022 :  19:49:26  Show Profile  Reply with Quote
The '85 looks just like Scott's photo. Nuts are a good idea--washers optional, since the plate acts like one.

Dave Bristle
Association "Port Captain" for Mystic/Stonington CT
PO of 1985 C-25 SR/FK #5032 Passage, ex-OUPV,
Now on Eastern 27 $+!nkp*+ Sarge (but still sailing when I can).
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delling3
Deckhand

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USA
13 Posts

Response Posted - 04/07/2022 :  06:36:10  Show Profile  Reply with Quote
Great help, thanks. Appears I need to get an access port. I would like to make this hole as small as practical. Any opinions on what diameter to use. CD has one with a 4" opening - that seems larger than necessary?

Thanks again!
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islander
Master Marine Consultant

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USA
3932 Posts

Response Posted - 04/07/2022 :  07:02:27  Show Profile  Reply with Quote
I also wanted the hole as small as possible so I used a 3" deck plate. The one in the photo is this one. You will have to trim it a bit as I said above.
https://www.amazon.com/Nicro-N10863DW-plate-white-snap/dp/B000NI01VC

Scott-"IMPULSE"87'C25/SR/WK/Din.#5688
Sailing out of Glen Cove,L.I Sound


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Voyager
Master Marine Consultant

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USA
5044 Posts

Response Posted - 04/07/2022 :  10:35:14  Show Profile  Reply with Quote
Several years back, whilst on a passage, my gudgeons loosened up and I almost lost the lower one in the drink! So I reinstalled new SS bolts in the bottom one down below in the quarterberth access panel using flat washers plus split washers and some locktite to keep them in place. Nylock nuts would have worked also.
I was similarly concerned about the top gudgeon, however, when checked it was snug as a bug in a rug. Nonetheless, I removed the bolts which looked fine. I applied some locktite on these too and screwed them back in finger-tight plus 1/2 a turn. Lo, these many years later, they’re all still fine and in place.
Also since then, each spring I walk around the boat with my screwdriver/nutdriver gun set on 3 and check any screws or bolts that I see. I generally find something that’s loose.

Bruce Ross
Passage ~ SR-FK ~ C25 #5032

Port Captain — Milford, CT

Edited by - Voyager on 04/07/2022 19:36:25
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