Vol. 71, No.1 Spring 2026 18 associated piping was fabricated.


Propellor blades and shaſt s were made from sheet aluminum and tubing. T is matches the material used in the actual hydroplane. (Figure 25)


Cockpit, Rigging, and Finish Up 23. Fuel and coolant tank and other accessories added to engine.


T e cockpit was straightforward to fabricate. Its base is a wooden board and consists of a footrest, steering wheel, and seat. T e board, rim of the steering wheel, and bicycle seat were made from Costello boxwood. Brass was used for the rest of the parts. (Figure 26)


24. Jig for radiators.


T ere are three sets of rigging on the model. T e fi rst set strengthens and keeps the pontoon-nacelle harness aligned. T e second set consists of bracing for the engine pylon as well as backstays for the structure. (Figure 27) T e third and fi nal set aligns the rear hydrofoil structure. Notice that this bracing prevents rotation of the hydrofoil. (Figure 28) Also, later photographs of the hydroplane do not show any rudder or obvious mechanism to steer the craſt ; the steering wheel does not appear to be connected to any steering gear and may have been just a place to hold on.


T e fi nished model was mounted on four dowels that were in turn fastened to the baseboard of a case. A display case for the hydroplane was built based on the instructions found in Build Your Own Model Ship Case by Wes Martin that is available online for a low cost. Making use of a 10-inch table saw, the type of case described by Martin can be built (and fi nished) in less than a week. I chose to stain the case and the vessel mounts blue-grey to complement the model. (Figure 29)


25. Antoinette V16 engine completed.


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