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Butt joint Mast?
On Tue, 04 Jul 2006 19:14:01 GMT, wrote:
When I noticed a pop rivetted butt join on the mast of a new boat I suspected a mast repair job? When asking the US mast manufacturing company as to why a pop rivetted butt joint was present on a 45 feet long new mast, they replied that the longest aluminium extrusion available was 40 feet long. They also stated that it was standard practice in the industry to butt joint the length of a mast after 40 feet. They said that their masts were elongated by inserting an internal sleeve and securing the joint with pop rivets. They also mentioned that other manufacturers were using butt welding technique instead of pop rivets. Maybe this is standard practice but it was an eye opener for me. As anyone notices that before? Yup, my boat. I think, though, the max extrusion length is more than 40 feet. Catalina 36 bridge clearance is 55 feet and they have one piece masts. |
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