This was an extensive study into all the cooling mechanisms inside of the client's Drum Motor Technology. In this case there was no forced cooling system and the motor was naturally cooled. The goal was to establish the maximum losses inside of  the frame that would allow safe temperature of all components. Investigation of numerous parameters such as frame length, oil level, drum shell speed, rotor speed, housing materials frame, radiation were conducted and a qualitative assessment of each parameters was made. The ultimate goal was to provide the client with clear set of guidelines to make decisions and to provide solutions to improve the heat dissipation in the motor.