I have a Aeroworks Yak 90-120 with a SPE26 engine. I installed a 11.1 mm carb, had laying around and installed a CH ignition, more reliable. I have less than one gallon of fuel throught it and the last tach reading with a Xaor 17X6 woody was 8200 rpms. The plane weights 10 lbs 1.9 ozs with Ni meths. The plane has plenty of power. will pull out of a hover. Good combo with this size of plane and I am very happy with the plane and set up.