A question about ranks and other stuff

[NeonSamurai]

It might be tied in to the fact that the game doesnt play sounds when the right engine is running only. this can be demonstrated by recharging batteries at all stop. The rpm gauge for the right engine is near at max, but not an engine sound can be heard. I think the engine sound is tied to the right engine only, possibly to avoid conflicting sounds if each engine had its own sound.