On my Saito 180 on my H9 edge which is 12lbs. I had decent performance. I could hover at a little over half throttle and have plenty of pulling power. This was on cool power 15% and an APC 16*8 which was turning between 9300 and 9500. According to horizon hobbies this was about right. I went to 30% heli and was turning between 9800 and 10000. I had awesome performance. Well a bearing locked up in the motor from rubbing the backplace and making little aluminum shavings so i had to break the motor down. When i put it back together i forgot to put the gasket between the crankcase and the cylinder. It actually doesn't really need it because there is a skirt on the cylinder that is a snug fit down into the case. Anyway i didnt realize that i had made this mistake so when i fueled up the next time with 15% my tach read 10700. I though that my tach was bad so i borrowed one and it read between 10650 and 10750. I guess that removing the cylinder gasket up the compression quite a bit. I do have to run a little rich to keep the RPM down but with an 18*6 i shouldnt have any problem. I probably have 50 flights with this setup and i have plenty of power and so far no problems. But only do this if you are not worried about messing up a motor. I think with this setup, which could be hard on the motor would pull even a 15 lb. airplane no problem. I would think with this setup the Chip Hyde Double Vision or Cap X either one would be great airplanes. that is just my $.02.