Recent Blogs
Street-Railway Tread Brake: Per-Shoe Force Calculator | FIRGELLI
Explore hand-wheel brake rigging and compare four equal shoe forces, tread drag and ideal deceleration under stated rolling assumptions.
Trolley Car: Overhead Supply and Steady DC Power Calculator
Explore overhead current collection and rail return. Calculate ideal steady input power and current from motor output, motor count, voltage and entered efficiency.
Car Truck Motors: Streetcar Axle Motors, Diagram and Specific Power Calculator
Explore directly connected motors on historical streetcar axles. Compare one motor’s output power and mass to calculate specific power, specific mass, watts and horsepower.
Street Railway Sweeping Car: Paired-brush Motion Calculator
Explore paired diagonal rail brushes. Calculate nominal tip speed, lateral and along-track components, and rotation frequency from entered diameter, RPM and angle.