everyone wants longer flight times... even me.. the simple fact is... LiPo run down... to get more flight time, buy more batteries...with that heli you'd be looking at 5-7 minutes (depending on motor and gearing) mine I can currently get 6 minutes on 2200mah packs.. 3300mah packs would get me 7 minutes.. I did swap my motor for a Z20a-980 and changed my gearing to a 14T pinion and 50T primary.. if I dropped my head speed even lower, I could extend that to 10+ minutes.. but it would be a very very slow 10 minutes

at these flight times, I find it's plenty long and give my electronic a chance to cool down and me a chance to breathe (must remember to breathe while flying)