My PTE36R is on an Aero Works 35cc Extra 260. I have flown the airplane with a CRRC40 and a BME50. The CRRC 40 just did not pull the 14.5 lb airplane around well and the BME50 pulled it great, but the weight was over 15 lbs. A little heavy for the 78inch wing. I have not flown it yet with the PTE, but the PTE seems to have better power than the CRRC40 and is considerably lighter. Hope to have the plane around the 13 lb range.