What is the maximum independent brake cylinder pressure allowed on locomotives with clasp-type brake shoe rigging?

The maximum independent brake cylinder pressure allowed on locomotives with clasp-type brake shoe rigging is established to ensure both performance and safety in braking systems. The specified limit of 45 psi for this type of brake rigging is designed based on the mechanical characteristics of the clasp-type configuration, which provides enhanced brake shoe contact and force distribution on the wheel tires.

Clasp-type brake rigging is effective for heavier loads and higher performance requirements, but it also requires careful management of the brake cylinder pressure to avoid excessive wear on the brake shoes and degradation of braking efficiency. At 45 psi, the braking system can operate effectively without risking system failures or compromising safety standards.

Other pressures, such as 60 psi or higher, might lead to increased wear on components, reduced durability, or even malfunction in the braking mechanics. Thus, adhering to the 45 psi limit for independent brake cylinder pressure balances the operational needs with the longevity and safety of the locomotive braking system.