Karl-August started in the BG Special in 1951 and finished second in the East German Championship to Daniel Zimmerman. Like his countrymen, he struggled in the occasional race in West Germany which attracted the British drivers in their Coopers, but was competitive at home.
Some results for Karl-August in the BG Eigenbau:
For 1952, he moved to a locally made Grün-Zundapp but his season was somewhat marred by unreliability and he could only finish fourth to the sister cars of Willy Lehmann and Gerhard Zschoche and Karl Weber's Seepferdchen:
Gerhard Zschoche and Karl Weber's Seepferdchen:
Karl Weber's Seepferdchen:
1953 brought better reliability and better positions earning Karl-Heinz second place in the Championship to Lehmann:
He continued with the Grün for '54 but by now, Lehman had acquired a BMW powered Scampolo and (West German) Theo Helfrich was in the latest Cooper Mk VIII so top placings were hard to come by and Karl-August was back to fourth in the Championship and this appears to be the end of his racing career.
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