Alfons Pützer KG known primarily as sailplane manufacturer; produced an improved motorized version of the Doppelraab sailplane, known as the Elster in 1957. Small batch produced for German club use.
In post war Germany, General Aviation flight was not permitted until 1956. At the time of this rejuvenation, the Porsche 678 aircraft engine was being developed. This was based on the 4 cylinder Porsche 356 car engine. This air cooled engine was modified for the aviation environment.
At this time Alfons Pützer was also developing the Elster A airframe, powered by the 52HP 678/3 Porsche engine. The prototype was powered by a 52 hp Porche 678/3 engine.
This was followed by the Elster B version powered by the 75 HP Porsche 678/4 engine and the Rolls Royce Continental C-12F and C-14F engines. The 95 hp C90-12F version was selected for use by the Federal German Luftwaffe’s sport flying groups and production deliveries began in 1960, 21 being built.
The Elster-C is specifically for glider towing, powered by a 150 hp Lycoming O-320 engine.
Elster B
Engine: Continental C90-12F, 95 hp
Wingspan: 43 ft 4 in
Length: 23 ft 3.5 in
Height: 8 ft 2.5 in
Wing area: 188.368 sq.ft
Empty weight: 1014 lb
Loaded weight: 1543 lb
Max speed: 104 mph at SL
Cruise: 93 mph
ROC: 720 fpm
Service ceiling: 16,100 ft
Range: 272 mi
All Aero 