of the coil the coil therefore has differently shaped endwindings with one end 12 being u2018 straight u2019 and the other end being u2018 bent u2019 application_number US 201313887400 A description an example of an improved pre formed single layer coil 10 for a rotating electrical machine is shown in fig3 and 4 the coil 10 is formed from one or more insulated conductors as a complete loop and has several turns when viewed from the side fig3 it can be seen that a first endwinding 12 is u2018 straight u2019 and a second endwinding 14 is u2018 bent u2019 such that it extends away from a longitudinal axis la of the coil 10 the first endwinding 12 includes an outer surface 24 and an inner surface 26 the second endwinding 14 includes an outer surface 28 and an inner surface 30 fig6 when viewed from the top fig4 it can be seen that the first and second endwindings 12 14 join together two winding runs 16 of the coil as described in more detail below the winding runs 16 are parallel to each other in both the axial direction of a stator of the electrical machine and the direction in which they extend into the stator in use however a.