Hello,

My friend has a split and his running on Mega 16/15/3 and 4.75 x 4.75.. damn, that thing is very fast. His a beginner and I have flown it too! ( I actually helped him to build it) he reinforced wing with CF rods and his using a Tp1320 3 cell. I know it's a overkill but I think it flys great. We made our custom biult ailerons which are a lot stronger and I'd guess that on a dive, it goes around 100 mph thanks to the quite thin airfoil (not much drag.