Alexander Graham Bell's HD-4 Hydrofoil

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In 1918, Alexander Graham Bell and his team built the sixty-foot long HD-4. It ran two 350-horsepower Liberty engines and began to rise off the water at 15 mph and rose off complet ely at 30 mph. Its top speed of 70.86 mph was a world record that held for more than a decade. This balsa wood model kit includes a full size plan, building instructions, premium printed balsa wood, balsa strip wood, thread, wire, and tissue covering. Show more