Chain Plate Knees and Chainplate Angles.

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Windcall
Bottom Paint Application Technician
Posts: 22
Joined: Sun Jan 12, 2020 6:19 pm
Boat Name: Windcall
Boat Type: Alberg 30 1969 Hull 397

Chain Plate Knees and Chainplate Angles.

Post by Windcall »

Atom, Thank you for all your help,

I just installed new v berth shelves and am cutting plywood for knees for chainplates, The ones I took out, looked like one 3/4" ply plus one 1/2" ply and fiberglassed in... so the whole wood knee was 1 1/4. It had about 1/4 of fiberglass wrapped around it.

I have made (2) 3/4 ply's to laminate together. Is this thick enough for knees, or should I up it to 2". I have lowered the shelve from the 6 1/2 tall to 10 1/2" tall. Also I am putting on the chain plate side a 1/4" laminate same size as the knee over the ply so that would make a total of 1 3/4" chain plate knee.

The second problem I have is the old chainplate knees were thrown away by a family member and I now have no idea what angle the chain plates need to be coming out of the deck. I can sort of guess on a couple by the direction of the hole through the deck but that will go away as soon as i start repairing the core around the exit hole. Is there a way to estimate or get a degree approx that the chainplates are from vertical on your boat.. should be about the same no? or is a good guess enough lol. I put a long strip of 1 1/2 x 1/4 thru the chain plate hole to get a angle that it probably was, if I mirror this on both sides is that a good guess or what do I do..

Any advice or direction you can give me would be appreciated.
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