Can t Get Velocity and too much drag

Hello

I can t get my chopper speed

The Velocity output is alway 0, even its moving, i get a velocity when pressing the up/down buttons

Another problem:
Im using add force to make the actor move, and i dunno why he dont keep his momentum
, my drag is at 0.1 but it slow down to still so fast, the mass is 1000kg, it should not stop like that

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