Servos For RC Airship

[WillowPtarmigan]

What kind of servos and how many do you use for your RC airships, whether it is a blimp or dirigible?

[blimppilot]

I fly several blimps, ranging in size from 15 feet to 23 feet. A typical setup would use 1 servo for fan rotation and then speed controls for the power & lift motors and another for the turning motor. But, I have 3 other servos on board for drop items.