Constructed by Erich Bachem for his apprentices the motor glider "Lerche", which can be regarded as the forerunner of today's ultralight aircraft. Originally, Bachem wanted to build the "Lerche" equipped with a 20 HP Zündapp engine as a kind of backpack airplane. The pilot should therefore get the device with a sprint in the air. It is not surprising that these attempts failed. The later version was equipped with skids and started by means of a rubber rope, which is still practiced today during gliding. Contemporary witnesses who still saw the amazing small aircraft fly claimed that the "Lerche" had been intended as a reconnaissance vehicle for the war effort. However, civil use seems more likely to have been a cheap sports aircraft for the post-war period. But shortly after the end of the war, the motor glider, which today is only known from photos, was scrapped.
Type Sinle seat ultra light motorglider
Engine 1 Zündapp
Dimensions Length 4,5 m , height  ,  span 8,5 m , wing area  12,5 m2 , wing chord 1,5 m
Weights Empty 28 kg (fuselage), loaded  , max. take off weight , engine 12 kg, fuel 5 kg, pilot 75 kg, military equipment 5 kg 
Performance Max.. speed 80 km/h , cruising speed  , start speed 24 km/h, landing speed 18 km/hrange , endurance (with extra load)  1 h, without 2 h , service ceiling  2000 m , climb 2,5 m/sec.
Type Werk.Nr Registration History
Probably destroyed after the war