Hi again.. First of all, sorry for my bad english. I have hexacopter and now I will build X8 octo.. I have bought one part every mounth. I have T-motor U5, 40A opto esc(simonK), 16x5.4 t-motor prop, PDB, Pixhawk FC, dragonlink rx-tx and 2x10000 mah battery. But I havent decided about frame yet...