The real plane (foamy) is capable of using 3s or 4s battery. Using a 3s, 11.1V 2200mAh 50C or 30C, requires a 13 x 8e Prop. While using a 14.8V 2200mAh 4S 30C or 50C, requires a 12 x 6e prop. It uses an Outrunner, 3720-800Kv, 14 pole motor.
I checked what battery you placed in it and it appears...