Which factor does not affect crane stability during a lift?

The duration of the lift does not directly affect crane stability. Stability primarily depends on factors that influence the crane's center of gravity and overall balance during the operation. The type of load being lifted can affect the center of gravity, as different loads may distribute weight unevenly or shift during the lift. Environmental conditions such as wind, ground conditions, and obstacles can significantly impact a crane's stability by potentially creating forces that could unbalance the crane. The setup and configuration of the crane, including its outriggers, counterweights, and overall design, are also critical to ensuring that it maintains stability throughout the lift. Understanding these elements is crucial for crane operators to ensure safe lifting operations.