As compared to the Ka 6 the only difference of the B-version is the span increase to 15 m. Additionally, the Ka 6 BR was equipped with a fixed wheel.
With the Ka 6 BR Heinz Huth achieved a third place in the Standard Class at the 1958 World Championships in Leszno, Poland. In addition, OSTIV s awarded the Ka 6 BR the prize for the best standard class sailplane.
The Ka 6 BR “D-4339” shown in the photo gallery was Rudolf Kaisers personal sailplane. His son Dr. Hans-Georg Kaiser has donated this sailplane to the Soaring Museum on the Wasserkuppe.
Technical Data
| Muster / Type | Ka 6 B / BR |
| Klasse / Class | Einsitzer / Single seater |
| Erstflug / Maiden flight | 1957 |
| Herstellungszeitraum / Production period | 1957 – 1968 |
| Stückzahl / Number of pieces | 840 (alle Ka 6 außer “E”) |
| Konstrukteuer / Designer | Rudolf Kaiser |
| Spannweite / Span | 15.0 m |
| Rumpflänge / Fuselage length | 6.66 m |
| Höhe / Height | 1.58 m |
| Flügelfläche / Wing area | 12.4 m² |
| Flügelstreckung / Wing aspect ratio | 18.1 |
| Flügelprofil / Airfoil | NACA 63-618 / NACA 63-614 mod. / Joukowsky-Tr. |
| Leermasse / Empty weight | 185 kg |
| Höchstflugmasse / Max. weight | 300 kg |
| Max. Flächenbelastung / Max. wing load | 24.2 kg/m² |
| Geringstes Sinken / Min. sink | 0.63 m/s |
| Gleitzahl / Best glide ratio | 29 |
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