A Rap......I ordered the gear today including the volt/watt meter. I also picked up another battery. It is a 4s 1800 mah 20c. That should cover this motor and a couple of other units I have. As I mentioned earlier, we have the HOB ME 109 built with a Cox .051 R/C on it. It is a screaming motor and I hope it pulls it. I scratch built a 40 inch Citabria a couple of years ago and it pulled it fine. We'll see. Keep in touch.