Dunkley Whippet Sports specification
ENGINE: 65 c.c. Bore 44 mm. Stroke 42 mm. Overhead valve air cooled single cylinder. Output 2.8 b.h.p. at 5.2m rpm. Bearings, heavy duty ball race with high reserve safety factor. Cylinder liner. cast iron centrifugally cast for close grain giving hard wearing properties. Compression ratio 7.5: 1.