Design
What you have posted is the max hp & max torque graph for the engine.
You will need to overlay a STD PROP HP , absorbing graph to see what percentage of the aviliable hp is used at any specific rpm.
The closer to full throttle at ANY rpm you are , usually the more efficient the engine is.
Usually proping for 2400 will be less than 50% power at 1800.
FF
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