well I'm trying to put together a 6 volt rx system on my raptor 50 would realy like to put together a 2s lipo setupbut I'm poor right now Ibuilt my own rx pack with 5 AA 2500mah all soldered up. My main question is would Ineed to drop the voltage going into the gyro & rudder. Ihave a gy401 with a s9253 servo. what do you people recomend.

Yes, you dont want to be feeding that servo much more than 5.3 volts.