I have a Moki 180 and it has more then 15lbs of thrust, the 180 has more like 19-20lbs of thrust and the 2.1 a little more. I am running mine on a Menz S 18 x 8 and (the prop for the motor) and a pitts Bison muffler and its awesome.

People THINK Mokis drink fuel, but what you don't understand is the Moki 210 drinks 2.5ounces per minute AT FULL THROTTLE The Moki 180 drinks 2.0 Ounces at FULL throttle. If you compare that then its really not even bad. I fly my Hanger 9 Edge 540 for 20 minutes on a 24 ounce tank and still have 1/4 tank left.