"Hi, I use Turnigy D3530/14 1100KV and one nanotech 5500mAh, propeller 11*4.7 but will change to 12*4.5 later, using Apm2.5 with 2.8.1, rate roll P to 0.1, 0.135 feels a bit unstable for my setting. Still trying to tweak better, will post here later."