Thanks to Sailr, I got myself a CF Micro Hydro and a White Micro Hydro.



The CF Hydro got the Tenshock40 and Viper 3200 4-pole. I've switched back to a 2.3mm flex shaft - 3mm prop shaft, and the Plastic Propeller (30mm X 36mm). Would an aluminum propeller have a Performance Advantage/Recommendable?