I bought a pololu motor controller. Now my 6v motor is connected to this and a 6V battery. Now the motor controller is capable of providing 1 amp to the motor. This supply is also used as the power source for my 2 servo motors. When im running the dc motor and increasing its speed everything works perfectly. However, the instant i control a servo (using a pololu servo controller) the motor speed decreases and remains that way until i put the servo back in its original resting position. How can i fix this. I know about decoupling however, I do not want to provide another power source to the servo motors. IIt seems as though the current is being sucked out by the servos and choking the dc motor. How can i fix this???
What you should probably do first is measure your 6v battery power while you perform the problem sequence and see if the battery voltage is dropping too low under the load.
Lefty
Hey Lefty you are 100% right. The voltage fluctuated from 6V to around 4.5V and the motor is rated for 6V. I dont fully understand how this is possible. I thought that if i hooked everything in parallel that the voltages would all be equal 6 Volts. What is happpening and how can I get the servo and motors to only have one power source and how strong does this source have to be????Really apreciate the help. 
I dont fully understand how this is possible.
You are drawing too much current from the battery and the internal impedance of the battery is limiting the current and hence dropping voltage.