Here is another alternative.. from Charlie at Rotorworkz... built in phasing. This will work on the 550, F50 and V50.
It's not just a hobby... it's a lifestyle!
Outrage Fusion & 550 / Goblin 700 / SK540 / Kontronik / DX8 / Quantum / RJX / 4010 Duo
Pete Team Outrage.