| Type | Two seat sportplane Kl 1 First prototype early 1926 | Two seat sportplane Kl 1 Second prototype beginning of 1927 | Two seat sportplane Kl 1a built 1927 | Two seat sportplane Kl 1b | Two seat sportplane Kl 1c |
| Engine | 1 Siemens Halske Sh 11 or Sh 12 | 1 Siemens Halske Sh 11 or Sh 12 | 1 Siemens Halske Sh 11 or Sh 12 | 1 Siemens Halske Sh 11 or 1 Anzani | |
| Dimensions | Length 6,50 m, height 2,60 m, span 8,30 m,wing area 18,70 m2, aspect ratio 3,7 | Length 6,20 m, height 2,60 m, span 7,95 m,wing area 17,00 m2, aspect ratio 3,4 | Length 6,25 m, height 2,55 m, span 8,00 m,wing area 17,10 m2 | ||
| Weights | Empty 420 kg, max. take off weight 670 kg, wing loading 36,8 kg/m2, fuel capacity 86 kg, oil 14 kg | Empty 470 kg, max. take off weight 710 kg, wing loading 41,7 kg/m2, fuel capacity 72 kg, oil 14 kg | Empty 490 kg, max. take off weight 740 kg, wing loading 43 kg/m2, fuel capacity 72 kg, oil 8 kg | ||
| Performance | Max.. speed , cruising speed , range , endurance , service ceiling , climb | Max. speed 152 km/h at sea level, cruising speed 140 km/h at sea level, climb 2,0 m/sec., service ceiling 3500 m,range 560 km | Max. speed 152 km/h at sea level, cruising speed 140 km/h at sea level, climb 1,8 m/sec., service ceiling 3500 m,range 560 km |
| Type | Two seat sportplane Kl 1d (Project) | Two seat sportplane Kl 1e (Project) | Two seat sportplane Kl 1f (Project) | Two seat sportplane Kl 1g (Project) |
| Engine | 1 Whirlwind | 1 Cirrus | 1 Walter | 1 Siemens Sh 14 |
| Dimensions | Length 6,25 m, height 2,55 m, span 8,00 m,wing area 17,10 m2 | |||
| Weights | Empty , loaded , max. take off weight | |||
| Performance | Max.. speed , cruising speed , range , endurance , service ceiling , climb | |||
