Hi, Anyone who has recored an Oday 22 under the mast I have a few questions regarding a 1973 ODay 22 When I pulled up the outer skin (from on top of the boat) I saw the rotted core followed by the bottom skin followed by an open air space followed by the cabin liner. Questions: Is the open air space normal? Seems counter to design given the mast sits above all this. If its not normal what should be there? I doubt a second layed of core. If it is normal, then what is the point of the mast compression post inside the cabin? If I try to bring the cabin liner and bottom skin together then I'll distort the concaved shape of the deck. Thanks -Doug
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C
Clay
I did it
Hi Doug, I did exactly this job on my '76 Oday 22. The deck core was rotten under the mast step; the mast was "oilcanning" the deck to the extent that the rigging was all slack and the boat couldn't be used. I sawed out the deck skin, scooped out all the rotten balsa, replaced the core (using solid laminate under the step to prevent future crushing) epoxied the deck skin back on and threw her back in the water. I sailed her HARD this last summer; the rigging remains taught, the boat sails as well as a shoal keel Oday 22 ever will, and the deck under the mast step is flat and hasn't complained a bit. A very satisfactory repair. Question: Did you cut the inner skin out? I have to assume so, how else would you have encountered a space between it and the cabin liner? I did not explore anything below the inner skin; I assumed the inner skin rested on the cabin liner and on to the compression post. Perhaps I was naive, but when I replaced the core and deck and tensioned the standing rigging, the mast came down firmly on the compression post without distorting anything, and again, I sailed under several days of harsh wind conditions without any hint of movement or trouble. I guess I would fill the empty space with epoxy putty if it exceeded 1/8 inch or so, but if it's less than that, there shouldn't be any significant distortion if you just left it alone. That's what the factory did. Best of luck, Clay
Hi Doug, I did exactly this job on my '76 Oday 22. The deck core was rotten under the mast step; the mast was "oilcanning" the deck to the extent that the rigging was all slack and the boat couldn't be used. I sawed out the deck skin, scooped out all the rotten balsa, replaced the core (using solid laminate under the step to prevent future crushing) epoxied the deck skin back on and threw her back in the water. I sailed her HARD this last summer; the rigging remains taught, the boat sails as well as a shoal keel Oday 22 ever will, and the deck under the mast step is flat and hasn't complained a bit. A very satisfactory repair. Question: Did you cut the inner skin out? I have to assume so, how else would you have encountered a space between it and the cabin liner? I did not explore anything below the inner skin; I assumed the inner skin rested on the cabin liner and on to the compression post. Perhaps I was naive, but when I replaced the core and deck and tensioned the standing rigging, the mast came down firmly on the compression post without distorting anything, and again, I sailed under several days of harsh wind conditions without any hint of movement or trouble. I guess I would fill the empty space with epoxy putty if it exceeded 1/8 inch or so, but if it's less than that, there shouldn't be any significant distortion if you just left it alone. That's what the factory did. Best of luck, Clay
Solid Laminate
Clay, Forgive my ignorance (I'm a relative newbie to sailboat repair), but what is the "solid laminate" that you used to replace the wet balsa core? I think I have a similar problem on my 1983 ODay 23. The deck under the mast isn't oil-canning, but it is slightly compressed and there are spider cracks radiating from the mast step. I removed the base plate after hauling it out of the water in October, thinking I would just rebed everything, but now I'm thinking that I might want to reinforce that area. I didn't find any evidence of a wet core when I removed the bolts from the mast base plate, but I haven't looked more closely than that. Thanks. Bob
Clay, Forgive my ignorance (I'm a relative newbie to sailboat repair), but what is the "solid laminate" that you used to replace the wet balsa core? I think I have a similar problem on my 1983 ODay 23. The deck under the mast isn't oil-canning, but it is slightly compressed and there are spider cracks radiating from the mast step. I removed the base plate after hauling it out of the water in October, thinking I would just rebed everything, but now I'm thinking that I might want to reinforce that area. I didn't find any evidence of a wet core when I removed the bolts from the mast base plate, but I haven't looked more closely than that. Thanks. Bob
C
Clay
What I done did
Bob, I drilled some small test holes around the deck to determine the periphery of the rotted area. The core that came up from my drill bit was obviously wet (even steaming due to the heat generated by my dull drill bits!) I cut out a section of the deck that measured about 2'X 3' based on this probe. Once I got the deck off and scooped out all the wet core, I cemented down new core with polyester resin, but I left an open space about 16" long and 10" wide underneath the spot where the mast step goes. I filled this void with lengths of fiberglass cloth saturated in epoxy resin 'til it was flush with the top surface of the new core. Then I poured resin thickened to a slurry all over the new core area to absolutely saturate the repair so it couldn't get wet again. After belt sanding the area to fair it, I epoxied the deck skin back on. The mast step can crush wood core, but it cannot crush the solid laminate, which carries the mast load down to the keel through the compression post. My only wonder is why Oday didn't do it this way in the first place? Oh-to economize, that's right, I keep forgetting!!
Bob, I drilled some small test holes around the deck to determine the periphery of the rotted area. The core that came up from my drill bit was obviously wet (even steaming due to the heat generated by my dull drill bits!) I cut out a section of the deck that measured about 2'X 3' based on this probe. Once I got the deck off and scooped out all the wet core, I cemented down new core with polyester resin, but I left an open space about 16" long and 10" wide underneath the spot where the mast step goes. I filled this void with lengths of fiberglass cloth saturated in epoxy resin 'til it was flush with the top surface of the new core. Then I poured resin thickened to a slurry all over the new core area to absolutely saturate the repair so it couldn't get wet again. After belt sanding the area to fair it, I epoxied the deck skin back on. The mast step can crush wood core, but it cannot crush the solid laminate, which carries the mast load down to the keel through the compression post. My only wonder is why Oday didn't do it this way in the first place? Oh-to economize, that's right, I keep forgetting!!
Thanks
Thanks very much for this description, Clay. It's extremely helpful. I guess my first step once the winter is over is to try to deteremine whether I do in fact have a wet core under the mast. Bob
Thanks very much for this description, Clay. It's extremely helpful. I guess my first step once the winter is over is to try to deteremine whether I do in fact have a wet core under the mast. Bob
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