Flew the Wind Hammer again yesterday. I ordered a few different props to try on the VV / RCGF 26 and got to try them on back to back flights. My original prop was a VV 18/8, I wasn't impressed with the power and the engine just didn't seem to like it. I switched it out for a VV 17/8 and things really changed. The engine just woke up, it ran better and pulled lots harder. It's still not going to win any vertical drags but it's now acceptable in my book. Considering the engine is still a long way from being broken in I think it's going to be OK. For you guys that want on the deck hovering with bottle rocket pull out then 30cc is the answer but for my more 2 3/4 D style flying this is going to be alright.