Heider

Model	Power	Years
6-10	11 hp[B]	1920 - 1926
B	22 hp[B]	1911 - 1914
C 12-20	17 hp[B]	1916 - 1924
C 15-27	30 hp[B]	1924 - 1927
D 9-16	17 hp[B]	1916 - 1929