Hi John, I resealed the chainplates on my 30 MK I about five years ago with advice from Dennis Cheuvront here on the list. I removed the chainplates (there’s only one per side on a 30 MK I) and dug out maybe a half-inch of wet / rotted balsa core around the cutouts between the fiberglass layers. Then I put the plates back in with a releasing agent on them (Carmex, it turned out), and filled all gaps with thickened epoxy, injecting it through the cover screw holes etc. First I'd packed Play-Doh between the inner fiberglass layer and cabin ceiling liner to prevent epoxy from dripping and oozing. Finally I put the covers back on sealed with LifeSeal. Some pictures of the project at https://drive.google.com/drive/folders/0B-NqAxQ6JxFTcTV6UlEwMmlqZkk?resourcekey=0-17H-NdO9zgBNAfBVLXuK2A&usp=sharing <https://drive.google.com/drive/folders/0B-NqAxQ6JxFTcTV6UlEwMmlqZkk?resourcekey=0-17H-NdO9zgBNAfBVLXuK2A&usp=sharing>. Overall I think it was an improvement, a necessary catch-up on some deferred maintenance, but unfortunately I think I still get a bit of leakage down the chainplates. At least now I hope it’s not wetting the balsa core.
Cheers, Randy Stafford S/V Grenadine C&C 30 MK I #79 Ken Caryl, CO > On Mar 21, 2022, at 2:40 PM, Rod Stright via CnC-List <cnc-list@cnc-list.com> > wrote: > > 3M 4200 > > From: John McCrea via CnC-List <cnc-list@cnc-list.com> > Sent: March-21-22 5:28 PM > To: 'Stus-List' <cnc-list@cnc-list.com> > Cc: johnmcc...@comcast.net > Subject: Stus-List Chainplate Sealing. > > Hello. I have a leak on my port side chainplate that needs addressing. I > pulled both chainplate cover plates and noticed that I had a stainless rod on > starboard that holds the two chainplates pieces together. One on port is > missing. Maybe that is causing excess movement and more adapt to leak? The > covers are original and thin 1/16 aluminum. I am getting them beefed up to > 1/8 stainless. > > Looks like the PO had only sealed them with clear silicone. So that will all > be dug out. I am also inspecting the hull tabbing below with the chainplates > etc to ensure that I do not have any issues there. What is the best sealant > to use when installing the new cover plates? Thanks! > > Regards, > > John McCrea > Talisman > 1979 36-1 > Mystic, CT
