Bf109 max speed...

[TomcatViP]

Pls keep in mind that the pitch of the propeller increase actually when the dial moves counterclockwise

AT 12 o-clock pitch angle is minimal and it required less torque from the eng to turn the prop at that speed

At 8h30 (max value) the pitch angle is maximal and required the max torque to spin the prop at a given speed

The more the pitch, the more air is pushed backwrd to generate a propulsive effect.

You have to use the 3 indicators : rpm, pitch and ata to ctrl the propulsive power at disposal for your flight.