Sven Yrvind · video

What this video covers

Sven Yrvind prepares to mount a 74.5-kilogram keel to his boat hull using a high-density, submarine-grade material for structural reinforcement.▶ 0:03 He distributes the keel's weight across 26 individual attachment points, calculating a load of approximately 4 kilograms per screw to prevent stress concentrations on the Divinycell H core.▶ 5:46 To ensure a secure bond, he drills and countersinks the mounting holes, then degreases all hardware and surfaces with acetone to remove contaminants.▶ 10:35 He rejects suggestions to use larger-diameter fasteners, noting that the hull laminate would require additional reinforcement to handle the increased point-loading, whereas his current method spreads the force across a larger surface area.▶ 6:50 After verifying the fit of the keel pieces and preparing the epoxy, he confirms the alignment is ready for final bonding.▶ 9:43 The project demonstrates that distributing structural loads across multiple small-diameter fasteners and maximizing surface area for epoxy adhesion provides sufficient strength for a lightweight keel assembly.

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