By engaging the twin-brothers Siegfried and Walter Günter a new era of aerodynamics broke out at Heinkel, with the sports- aeroplane Heinkel 64 as the first manifestation.

The 'Heinkel-dreamteam': The aerodynamicists Walter and Siegfried Günter, in addition Karl Schwärzler, Heinkel's chief-engineer.

The Günter Brothers, already wellknown about their sports-aeroplane 'Bäumer Aero', took a similar effort in the details and aerodynamic honing of the Heinkel 64. It is therefore not by chance, that there exists a certain similarity between the two aeroplanes.

Bäumer Aero 'Sausewind' IV

Sports-aeroplanes and their contests became increasingly popular in Germany. The development was vehement. Whereas the average speeds in the international tourist plane contest 1930 were about 170 km/h, they reached already over 200 km/h in 1932; the Messerschmitt M29 reached a top speed of 268 km/h during the preparations to the contest. In the contest, the Heinkel as the fastest aeroplane scored 241km/h

aircraft	serial number	registration	registration contest	pilot contest
He64a	404	D-2258		Oskar Notz killed.
He64b	409	D-2260	A9	Seidemann/Witt
He64c	423	D-2303	A6	Massenbach/Scholz
He64c	424	D-2304	C6	Morzik/Dempewolf
He64c	425	D-2301	B1	v. Cramon/Dübwart
He64c	426	D-2302	A8	Stein/Aumann
He64c	427	D-2305	E2	Junck/Beese

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In the official leaflets, issued by the Heinkel company, the He 64 is presented as follows:

Leaflet He 64 of E. Heinkel-company. (sheet 1)

Leaflet He 64 of E. Heinkel-company. (sheet 2) remarkable the mistake the retoucher made: please compare the registration on the right and on the left wing in the picture left above.