Newport 30 MK2, aft chainplate - SailNet Community

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  #1  
Old 10-09-2006
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Newport 30 MK2, aft chainplate

Within a month (august, 06), in San Diego, two newport 30 MK IIs were dismasted as a result of the failure of the aft chainplate. Has this occured anywhere else?
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Old 10-10-2006
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yikes -- we're new owners of a 1979 Newport Mark II. Can you describe how to properly inspect and maintain this critical part? thanks!
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Old 10-10-2006
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Haven't heard of it around NC, but we don't have a ton of Newports. Our 33 had the forestay shear last week, but we didn't lose the mast. )
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Old 10-10-2006
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As far as I know, the only way to inspect chainplates is to undo the shroud/turnbuckle (ensuring you have the mast stabilized with a halyard, etc.), undoing the bolts in the cabin below, and lifting the chainplate out through the deck. I think any corrosion usually occurs where it goes through the deck, where if there is a leak, the core gets wet and the lack of oxygen there promotes corrosion. It is not enough to inspect just above and just below the deck, as it can be badly corroded where it goes through the deck, without if showing anywhere else. Once inspected carefully, perhaps even with some dye to show small cracks, you can reinstall it and rebed it at the same time, to ensure it stays dry.
Hope that helps.
Frank
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Old 11-01-2006
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Talking I've replaced the fiberglass spacers

that are under the aft chain plates. while setting the tensions to the back stays after restepping the mast I noticed how the fiberglass spacers were squishing and causing the chain plate to bend into the aft rail as well as putting more strain on the bolts and chain plates. I took the old spacer to a friend and he made me new ones out of stainless steel, I also installed new bolts,nuts and a stainless backing plate. The sarboard side was easy to do but the port side required a smaller person to get into the lazaret
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Old 06-08-2008
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Aft chainplates

Are you refering to the backstay chainplates or the main shroud chainplates?
I have a 30MkIII that I just bought and wonder if the problem applies to it also.
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