Thursday, July 4, 2024

Rudder / Centerboard / Deck / Flooring

In this section I show elements of design and fabrication of the Rudder, Centerboard, Deck, and Flooring.  Photos are selected out of the construction sequence so, all of a sudden the boat is painted.

The Dotan rudder head & Spade Rudder, PVE pipe center board pivot, and Mast Tube are key features of the Persistence design.

 The Barto design calls for a typical "Barn Door" rudder.  I opted for a more modern spade rudder / fin keel underbody to improve sailing performance and overall balance.  I selected the Dotan rudderhead to provide effective actuation and retraction of the spade rudder without using strings and pullies




Rudder Assembly Drawing 


Rudder and Centerboard Drawing


Dotan Rudderhead Actuation



At Anchor with Rudder in up position


Centerboard trunk floors and long deck beams installed


Short Deck Beam and Support




Installing the Centerboard in the Trunk




Pennant is spliced into trailing edge of Centerboard
Board is easily raised or lowered from the cockpit. Rowing seat is also shown.  Deck is marine plywood epoxy sealed and attached to beams and the shear clamp




Centerboard rotates on a PVC pipe nipple pin.  Pin is captured by threaded caps. Water is sealed out  with "O" rings under the caps  To remove the Centerboard unscrew one of the caps and slide out the pin, the board is held in place by the pennant.

The Mast Tube is tapered to fit and guide the mast as it is inserted into the partner ring


Oak floors with drain holes




Cypress Flooring sealed with Tung oil and Boiled Linseed Oil Mixture 
Cypress Slats joined with White Oak tie pieces 



Floor boards installed supported by oak floors





















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