MJ Sailing · video

What this video covers

Matt and Jessica align the longeron and forebeam on their homebuilt catamaran by fabricating custom mounting points and refining structural geometry.▶ 0:00 To ensure proper compression and load distribution, Matt trims 60 millimeters from the longeron, reinforces the forebeam crossing with fiberglass, and rounds over edges near the anchor roller to prevent chafe.▶ 1:22 The installation requires precise integration of aluminum brackets that must be bead-blasted and anodized before final bonding.▶ 0:26 Because the brackets lack tolerance for post-assembly insertion, Matt de-cores the fiberglass structure to allow the hardware to sit flush.▶ 11:20 He determines the final mounting position by manually aligning the pin holes rather than relying on initial geometric calculations.▶ 18:18 The assembly includes a martingale, or seagull striker, to prevent the forebeam from inverting under forestay pressure.▶ 12:19 Matt also plans to route the anchor chain through a fiberglass tube into the bridge deck to shift weight aft while maintaining watertight integrity.▶ 7:15 Precise manual alignment of structural components often proves more accurate than theoretical geometric measurements during custom boat construction.▶ 18:13

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