Simple rotors can be combined in a variety of ways.Some of these combinations result in new rotor types. The types of combinations are illustrated. The leftmost column contains an object where the rotors do not intersect. This gives a combination of two separate rotors within a single object. In the next object, the zones of influence overlap, so this is a single rotor. The phases of the individual rotors do not matter. In the third object, the zones of influence overlap onto the others rotors. In this type of rotor, the phases do matter. Finally, in the last object the rotors overlap.

The first type will be cataloged, but are of not much interest. The next two types can be used to create complex rotors. Illustrated are a number of such objects cosisting of beacon and spark rotors. When the zones of influence or rotors overlap, combinations can be used to create wicks and other complex rotors. These are discussed in later pages.