RE: O.S.55AX whos got what with what?
Sometimes the 55 AX works well, and sometimes is doesn't. Regardless of the fuel, I've got mine mounted in my reactor at an angle and it acts up at midrange. Some fuels tolerate it better, but is a fueling mixture issue - I'm convinced. I don't know if it's the fuel tank placement on the plane with the angled engine that's causing the problem, but I've seen it 3 times already on 3 different airplanes. An OS A3 plug seems to help and removing the exhaust baffle seems to hurt. I'm thinking that for some reason, flow through the engine at the midrange is exessive and the engine pulls more F/A than it should in the midrange- maybe it's a porting issue?? Should I change the port shape on my engine? Hmmmm...... Definitely worth a try! I'm sick of dead-sticking my airplane!!!