GRANDVILLE BROTHERS “GEE BEE”€

1931

Gemini Sparkle

Key Takeaways:

  • Developed by the Granville Brothers during the Great Depression, the Gee Bee Model Z Sportser was designed for air racing to secure prize money.
  • The aircraft set record-breaking speeds for a land plane, achieving up to 281.75 mph, initially with borrowed components and later with an upgraded 800-hp engine.
  • While no original Gee Bee Model Z aircraft exist today, replicas continue to be showcased and flown at various air shows.
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STANDARD DATA: Seats 1. Gross wt. 2,280. Empty wt. 1,400. Fuel capacity 103. Engine 535-hp, supercharged Pratt & Whitney Wasp Jr.
PERFORMANCE: Top mph 270. Cruise mph 230.

During the Great Depression of the early 1930s, almost all American businesses felt the strain, including aviation. The Grandville Brothers decided to take a shot at substantial prize money offered at air racing events. With an engine borrowed from Pratt & Whitney and propeller borrowed from Curtiss, the Gee Bee Model Z Sportser entered the competition. In one race, the Gee Bee averaged 267.342 miles per hour, the fastest speed ever recorded for a land plane. Later in the year with a upgraded 800-hp Pratt & Whitney R-1340, the model Z was clock in at 281.75 mph. None of the original Gee Bees survive, but replicas still fly at a variety of air shows.

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