Shane's right, the engine ran perfectly. Turning an APC 11x4 prop, it would pull my 4.5 .lb Spa3d out of hover like a rocket. Someone here on RCU compared the Mecoa .46 to a .46FX, saying that the two were a lot a like in performance. I have to agree, they are very close in performance. I haven't yet tried a 12X4 prop on it yet, like everyone is running on the FX. I'm sure there will be some difference in performance but not much. I believe that the Mecoa is a great engine for the listed $69.

John