How is BHP affected when the drive sheave size is doubled?

When the drive sheave size is doubled, the brake horsepower (BHP) is affected significantly due to the relationship between the sheave size, RPM (Revolutions Per Minute), and the torque transmitted through the system.

When the size of the drive sheave is doubled, the radius of the sheave increases, which directly influences the torque produced. Torque is a product of the force applied and the distance from the center of rotation, so increasing the sheave size increases the torque. Additionally, a larger sheave will cause the load to move at a slower speed when compared to a smaller sheave, which can lead to a higher amount of power being required to maintain the same output.

In terms of BHP calculations: if you consider that BHP is a function of both torque and RPM, doubling the sheave size changes the system's dynamics. Torque increases due to the larger radius, and even though RPM may decrease, the overall effect leads to a scenario where the power required can increase significantly – specifically, it can lead to a situation where it is 8 times greater than the original value. This is because if torque doubles and the effective speed (RPM) is reduced (due to the larger size), the combined result causes a