MJ Sailing · video

What this video covers

Installation of structural support beams on the cabin top requires precise alignment and bonding to manage compression loads from the mast and traveler. The crew installs a centerline beam to prevent the forward bulkhead from pulling toward the mast under tension from halyards and winches.1:28 Before bonding, they run electrical conduit for lighting and solar wiring through the beams, using string to pull the lines through before the tubes are permanently fixed.7:26 They use methacrylate adhesive to bond the beams to the fiberglass cabin top, applying two large beads along the six-inch flanges to ensure full coverage and structural integrity.13:44 Jack stands provide upward pressure to hold the beams in place during the 90-minute curing window.15:20 After the beams set, the crew identifies a missing backing plate for the aft traveler support, necessitating a future cutout and repair.17:04 Proper preparation of the fiberglass surface by sanding and keying is essential for the adhesive to bond effectively.5:45

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