Also in 1930 Fieseler started his own company and took over  the the second  RK-26 and rebuilt it  into a two-seater and redesigned it Fieseler F 1. The aircraft was used by Fieseler until it was sold in 1935 to Liesel Bach, a female German top aerobatic pilot.
Type Two seat sportplane designed for aerobatic
Engine 1 Walter Castor
Dimensions Length 6,20 m, height 2,66 m, wingspan 8,40 m, wing area 20,22 m2
Weights Empty 570 kg, loaded 855 kg , max. take off weight  
Performance Max.. speed 200 km/h , cruising speed 185 km/h , range 600 km, endurance  , service ceiling   , climb
Type Werk.Nr Registration History
D-1616