engine selection for edge 540 1.20 size
Get a OS 160. It's about $250 and weighs 2 lbs and will accelerate your plane vertically. Slimline pitts and Perry pump will round out the power plant and will turn most 18x8 props over 8400 rpms. These also sip fuel for their size. About 12-14 oz standard 15% for a 10 min flight. Oh... once pumped its turned out to be the nicest running engine I own.