RE: Goldwing 50cc Pitts Python V3.
Running a 22-8 on the 55
I'm running a Power Expander Pro so no "Y"s are needed. it has Battery share and regulated 5.0 volts to RX built in and I use the pin switch option. running 2 a123 2300 cells, 2000 mah niMh pack for ignition, Rcxel optikill switch,, no other regulators needed with this set up.
5625 servos for the Ailerons, Running left side chn. 1 right side chn 7 , using the Aileron differential in the Futaba TX, Servo were matched via a Hitec servo programmer. Elevator servos are Programmer matched also. single 7955 for Rudder
CG is where the manual said,, as much of a joke the manual is, it seams to fly well at that point.
glad to be of help, good luck