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post #9 of Old 11-25-2012
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Re: "The chainplate will buff out and probably be okay"

Originally Posted by mjf55 View Post
Monotone voice aside, it was very interesting. The question I have is that repair he made, circular plywood plugs in the knee, steel back plates sufficient? Should the plugs have been joined together? Fiberglass laid over the whole knee repair? Aluminum vs steel backing plates? Or am I just overbuilding again ? Thoughts?

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Steel+aluminium+stainless+water is pretty much the definition of an electrolysis problem. Wood anywhere near chainplates is equally a bad idea. They get so heavily loaded even fully encapsulated wood will eventually have the sheathing breached, leading to rot.

Add in that chainplates are often out of sight, or difficult to get to, and there is nothing about this repair that is anything other than a problem waiting to happen.

Greg Rubin
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