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Classic Goldwing Technical Forums
General Classic Goldwing Technical Forum
Frame rot...
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<blockquote data-quote="DaveKamp" data-source="post: 213652" data-attributes="member: 5122"><p>This failure isn't the result of 'weakness' in structural design, it's the result of corrosion chewing into metal that thinned out.</p><p></p><p>I'd call the boilermaker, and have him put his Ultrasonic Thickness Indicator on the frame in regular locations, as if he's doing a pressure-vessel certification matrix, and check to see if there's other areas that've thinned out substantially... and if so, consider finding a new frame (sigh).</p><p></p><p>If the erosion you see here is localized, then what I would recommend, is taking some flat stock that's about 1/8" thicker than the original wall thickness, warming it up in a small furnace, placing it on a mandrel and shaping it to lay over the outside of the tubing, and once the basic curves are done, lay it (red hot) over the frame, and gently form it into shape so that it's very tight around the frame, and once cooled, TIG or MIG it to the frame, then grind it smooth with a flap-disk in a 4" electric hand grinder. With that around it, and appropriately welded around the perimeter, you'll have no problems with it.</p></blockquote><p></p>
[QUOTE="DaveKamp, post: 213652, member: 5122"] This failure isn't the result of 'weakness' in structural design, it's the result of corrosion chewing into metal that thinned out. I'd call the boilermaker, and have him put his Ultrasonic Thickness Indicator on the frame in regular locations, as if he's doing a pressure-vessel certification matrix, and check to see if there's other areas that've thinned out substantially... and if so, consider finding a new frame (sigh). If the erosion you see here is localized, then what I would recommend, is taking some flat stock that's about 1/8" thicker than the original wall thickness, warming it up in a small furnace, placing it on a mandrel and shaping it to lay over the outside of the tubing, and once the basic curves are done, lay it (red hot) over the frame, and gently form it into shape so that it's very tight around the frame, and once cooled, TIG or MIG it to the frame, then grind it smooth with a flap-disk in a 4" electric hand grinder. With that around it, and appropriately welded around the perimeter, you'll have no problems with it. [/QUOTE]
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Classic Goldwing Technical Forums
General Classic Goldwing Technical Forum
Frame rot...
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