912ULS Fuel Consumption Data
Could someone provide some guidance on how the attached 912ULS performance graph (fig 4) should be interpreted? For example, to find Fuel Consumption, it seems far too simple to enter the graph at the bottom with RPM and move vertically until intersecting the MAP from the left axis and then reading off FF on the right side axis? If it is that simple, then the result is at odds with fig 5.2, Fuel Consumption. At 75% power, fuel consumption from fig 4 is approximately 27 L/HR vs 18.5 L/HR from fig 5.2. Both images are from the performance section of the Rotax 912 Operators Manual. What am I missing?