6V 1363rpm reduction ratio: 4.4, 6V 646rpm reduction ratio: 9.6, 6V 281rpm reduction ratio: 21, 6V 176rpm reduction ratio: 35, 6V 133rpm reduction ratio: 45, 6V 77rpm reduction ratio: 78, 6V 58rpm reduction ratio: 103, 6V 35rpm reduction ratio: 171, 6V 26rpm reduction ratio: 226, 6V 16rpm reduction ratio: 377, 6V 12rpm reduction ratio: 500, 12V 1931rpm reduction ratio: 4.4, 12V 915rpm reduction ratio: 9.6, 12V 399rpm reduction ratio: 21, 12V 250rpm reduction ratio: 35, 12V 188rpm reduction ratio: 45, 12V 108rpm reduction ratio: 78, 12V 82rpm reduction ratio: 103, 12V 50rpm reduction ratio: 171, 12V 37rpm reduction ratio: 226, 12V 22rpm reduction ratio: 377, 12V 17rpm reduction ratio: 500