I had an EVO 100 and put it on my Excelleron 90. I had it on that plane for several months. In all that time, I NEVER got to burn a full tank of fuel through that thing. Dead stick on EVERY flight, if I even got it airborne.

I worked with some of the best in the Pattern field and they could not get it to run right. Their solution... put an OS carb on board.. for a whopping 90 bucks!! I decided that this economy engine was no longer economy if I had to add an OS carb to make it run right. Nope.

Off it came and on went an OS 1.20 AX. Never turned back. Best decision I ever made.

CGr.