Pratt & Whitney R-1860 Hornet B

In 1929, Pratt & Whitney enlarged the R-1690 to 1,860 cubic inches and named it the Hornet B. The Hornet B did not sell as well as the Twin Wasp in the same (initial) power range.


  • R-1860-19: 650 hp (485 kW)


  • 9 cylinder, air-cooled, radial
  • displacement: 1,860 cubic inches (30.5 litres)

used by

  • Bellanca Aircruiser