On flight duration I started out with 3 minute flights until I had capacity used info then gradually increased to 5 minutes with a 2 minute reserve for a couple of missed approaches. I could get more duration if I let it poke around the sky and not use much power. I don't think that is much fun. The static run figures I am getting with the four blade are not that much different than with the ProZinger 26-12, an APC 26-15E, or an XOAR 24-14. I also flew it with an XOAR electric 26 I think was a 14 inch pitch that I broke. I can't find it so I may have left it in the crash can at the field. All of these props gave excellent climb and top speeds around 100mph, with the best being the 26-15E.