COOL! Is that the 3536 1800kv ntm motor? If so with that size prop I'm guessing that you're running it on 6s. What make 4.7x4.7 prop is it you're using? You could also try it on this 5x5 prop. www.banggood.com/1Pcs-KMP-5050-5X5E-55E-High-Efficiency-Propeller-p-1088500.html?rmmds=search&cur_warehouse=CN