[coolhandcountry]

Well now. Let start with the feigo and bk motor kv. feigao does theres not under load. bk does theres under a load. Sure on paper they seem like you would get more run time out the 10L. The 7xl has more torque so it takes less power to do the same thing. You should have about the same run time. I run a 14 l right now. I had a 7xl. The 7xl had alot more power. The run time may be shorter with the 7xl. I get about 30+ min on a set of batts right now. I am not easy on a truck though. I have space and I let the truck go. I have need for speed. I would like to try a 8 and 9 xl. Just to see what they do. One guy said 25-30 min on a 9xl. He has more torque than me to. Close to same kv rating as well. but the 9xl has more draw than mine. 9 xl has about 74 will mine is only about 40. In my opinion. Go with the xl motor.