If the compensating sheave diameter is smaller than the distance between the car and counterweight compensating rope hitches, where should the plumb lead of the compensating rope come from?

In elevator systems, the compensating sheave plays a crucial role in the overall balance and operation of the elevator. When the compensating sheave diameter is smaller than the distance between the car and counterweight compensating rope hitches, it is essential to understand the proper positioning of the plumb lead of the compensating rope.

Choosing to have the plumb lead of the compensating rope come from the counterweight ensures that the system maintains adequate tension and alignment. The compensating ropes are designed to provide balance by compensating for the weight of the elevator car and the counterweight as they move. By connecting the compensating rope to the counterweight, the system can ensure that any movement (upward or downward) maintains the necessary tension and prevents issues such as excessive sway or misalignment of the ropes.

In contrast, if the plumb lead were to come from the car or the other options, it could lead to improper tension, potential system inefficiencies, or even safety concerns. The connection from the counterweight establishes a direct link to the balancing mechanism of the elevator system, allowing it to operate smoothly and efficiently. This understanding of the mechanics involved is vital for maintaining the functionality and safety of the elevator system.