a beautiful boat should sail forever.
CHAINPLATE ANATOMY
Here is a great shot to go with Clyde's diagram. The 3/4 plywood "planking" has been removed, except for the piece above the blue bolt head.
The caprail can be clearly seen, and the sections of bulwark wall. Below is the deck, followed by the outer clamp. In the background, behind the frames and chainplate blocking, is the inner clamp. The nails along the edge of the chainplate were to hold the chainplate in position while the planking was applied. You can also see the 3/8" bronze ground bolt in the background at the bottom of the chainplate.
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Albums: Chainplates
Comment
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Comment by bob mitchell on October 28, 2019 at 7:43pm
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This is a great shot of the chain plate anatomy, showing two critical structural members that run the full length of the boat: Right beneath the deck is what Captain Clyde identifies as the outer clamp, and in the lower background, behind the chainplate blocking that is between the frames, is the inner clamp, which is a continuous beam three doug fir boards thick that runs from stem to stern.
WHAT"S THE POINT?
This is a very structural area, and the 3/4 plywood (that forms the sides of the boat, Or as Captain Clyde would say, "the planking") runs to right up under the cap rail, tying all members together with glue and screw. So in my original suggestions I thought about how little I could disturb, but after considering 1) the structural role of the plywood, and 2) there would be little difference in the cost ( time and materials) , and 3) it might even be easier to to an effective scarf with a larger square of plywood that spread across at least the two frames on each side of the chainplate blocking.
I might use a 45 degree router bit and just cut a 3/4 all the way around.
I might mention that a "multitool" would be great to have on hand. They can do effortless plunge cuts. I used $20 Harbor Freight versions for years with great success, but have now moved on to a significantly more expensive makita battery powered.
About
LINKS ===============
THE ROSTER
Muf, our Keeper of the Roster, has updated it. But he still needs information on boats out there that he doesn't have, like new owners, old owners, where any of the boats are. We don't post the roster on the web site, it is only sent to owners. Please send him anything you might have, or call him at:
909 561 4245
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Captain Clyde's Newporter sites:
and
The Ning site has been given a reprieve. I have transferred my Ning site to the blogspot site and will leave it there. I am keeping my Ning site open as a home for my photos and drawings.
Many of my photos there do not relate to Newporters, but a search through my collection may prove useful for your studies.
My drawings are not accurate in many respects as a result of the PAINT program used to draw them, There is no accurate scale and at best they are only useful to indicate some specific detail. Some are inaccurate because of my poor memory. Use them to help you think, not as a detailed presentation of the subject matter.
If any of you want to start a web site I suggest you remember what has happened to both my Ning site and this site (which is a Ning site) and remember that my Blogspot site is free and Blogspot's owner (Google) has promised to keep it that way.
Clyde's email:
Put 'Newporter' on Subject Line. Email is the best way to contact me. I do not regularly look at this site or its messaging system. Email will get to me post-haste.
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