| 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. |
|
 | 9 cylinder, air-cooled, radial |
| displacement: 1,860 cubic inches (30.5 liters) |
|
