The Rooster has a BEC rating of 5.7Volts / 0.5 Amps. In comparison the Super rooster has a BEC rating of 6Volts/3 Amps. (specs from the Novak website)
You will probably have to run a reciever pack in order to use 2 servos on the vehicle when using the regular rooster (the reason people use the SR instead).
stop the BEC and receiver punishment
+ and - directly from 5 cells of my 6cell pack
the red wire from escīs BEC is removed