Never said "instantly". But you keep bringing it into the conversation.
F=ma. For a given force, the acceleration will depend on the mass. An empty bucket will get to shoulder level in fewer degrees of turn than a full bucket. If it were a gyroscope, it would be exactly 90 degrees every time, no variation permitted. An R22 blade, being light, will get to its max displacement in 72 degrees of turn. Not a gyroscope.