Hi does anyone know if there will be a problem if I dont run a regulator with the following setup,

receiver is a spektrum pro
servos are both futaba s9152
transponder is amb
battery is 1300mah 7.4v premium power
transmitter 3pks

can I run without a regulator last week I ran 4x5min races and 1 20min main no problem but I just want to double check if its ok to continue??

cheers