The original amateur-built category D18 was adapted to comply with the Fédération Aéronautique Internationale microlight rules with the addition of larger flaps and renamed the D185. Both the D18 and D185 feature a cantilever low wing, two seats in a side-by-side enclosed cockpit configuration, fixed conventional landing gear and a single engine in tractor configuration.[2]
A tricycle landing gear-equipped version is designated D19 for the amateur-built category and D195 for the microlight category.[2]
All the aircraft in the series are all made with a wooden structure, covered in doped aircraft fabric. The 7.51NaN1 span wing employs polyhedral configuration with the outer wing panels exhibiting much greater dihedral. Engines used include the 850NaN0 Jabiru 2200 four-stroke powerplant as well as Rotax, Limbach Flugmotoren and 580NaN0 Volkswagen 1600 automotive engines.[2]