Further research into the Kaled mutation revealed the true end-form of the race to be far smaller than was previously conjectured. Davros and his scientific elite produced designs for the Mark Two Travel Machine that incorporated new refined technologies. Similar in form to the Mark One, but with a smaller dome section (reducing the target profile and size of doorways needed to accommodate the casing) the Mark Two was put into limited production at a secret test area located deep in the Drammankin Mountain Range. These casings were later found and utilised by the mutating Dal survivors who made the city their home.
Similar in many ways to the Mark One, this casing was manufactured from a bonded poly-carbide alloy that would come to be known as Dalekanium. Fifty-two (52) sensor globes gathered data on external conditions, allowing the central computer to configure the Life Support Systems to allow for the creature's survival in almost any environment. The Mark Two even allowed the mutants to survive being fully submerged in water for a limited period of time.
As with the Mark One, this casing featured two sockets into which could be plugged a number of different attachments. Due to paranoia amongst the Dal mutants, the left socket usually featured an energy weapon; with the right arm most commonly featuring either a plunger shaped data-port or a claw arm. A large variety of manipulator arms, tools and other devices were available and these could be exchanged at outlets located throughout the Dalek city. Two luminoscity dischargers were located on the dome – these flashed in time with the mutant's voice modulation to allow a visual aid to communication.
With the power unit working the same way as that of the Mark One, this casing was reliant on an external supply of power being sent to it. The motive unit received an upgrade. The main system was the same as that of the Mark One, allowing the casing to traverse flat surfaces with ease. For excursions outside the city, a larger motive unit could be fitted (as seen during the Dalek Invasion of Earth in the 22nd Century). This larger unit required more power to function, but allowed the Travel Machine to traverse terrain that was not perfectly smooth. In addition, the unit allowed the casing to elevate up to ten centimetres from the ground it was traversing, allowing obstacles to be avoided.
The dome of the casing was used to house the sophisticated computer system that maintained the inhabitant's environment and provided information to it on request. This move was mainly due to difficulties in maintaining the computer from its position in the Mark One design. Placing it within the dome allowed easy access to components, speeding up maintenance times considerably and reducing the number of cases of damage to the hardware. The habitation module was located in the "neck" area of the casing, ending above the skirting area. The mutant was thus afforded direct control of the manipulator arms. The majority of the workings of the inner skirt remained in the same configuration as the Mark One. The nutrient tank was located just below the habitation module and beneath this was the power plant and motive unit.
The Daleks, The Dalek Invasion Of Earth, Legacy of the Daleks, The Mutant Phase.
