KingWoodBarney..Et All....One other item thats not mentioned enough is wing loading.....a duelist has a "relatively "light wing loading making it a better candidate for single engine flying....it also has a pattern plane type airfoil which is quite effecient....engine thrust also makes a big difference if the plane is marginally powered or is powered accurately leaving a good margin for single engine flying....Its best to find out the flight characteristics of a twin in a single engine profile before an engine fails but this makes me alittle uneasy flying a twin and filling one tank halfway and waiting for the engine to quit....its a Catch 22....hoping an engine doesn't fail or "attempting " to find flt characteristics on one engine....I fly large Warbirds (singles,twins and soon 4 engs)and between the high wing loadings/High drag coefficients/fair engine performance....Its just prudent if an engine fails , to reduce power ,push nose down and land as soon as possible .I've just seen way too many warbird twins spiral to their deaths after engine failure...Only know of one Warbird twin that flys "GOOD" on one engine......so far....P-38 lightning...have seen 5 B-25's crater on one eng...Bill.....