Jones was assigned by Bentele to design the basic single rotor 60 cu. in. module and later, a two rotor (with & without center bearing) version, which became the workhorse for automotive, airplanes, silent "spy" aircraft, generator, automotive, inboard boat, and other engines for Curtiss-Wright, and the licensees that followed in the U.S. and elsewhere. Other groups were assigned to scale the single rotor engine up by the square root of 10 for potentially 1000 Hp/rotor, make a 4 rotor/integral shaft with split gears and bearings version for marine use,