Recent Blogs
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.
Street Railway Single Motor: Traction Gear-ratio Calculator
Explore axle-hung motor support and ideal pinion-to-axle gearing. Calculate gear ratio, axle RPM and torque factor from entered tooth counts and motor speed.
Multiple-Brush DC Commutator: Current-Density Calculator
Explore stationary brush banks and a rotating DC commutator. Calculate ideal current per brush and average current density using the brush count for one polarity.
Electric Street-car Brake Mechanism Explained: How It Works, Parts, Diagram & Formula
Explore streetcar resistor braking and compare current, equivalent resistance and ideal retarding force at specified grid voltage, power and speed.
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.
Freight Locomotive: Wheel–Rail Adhesion Calculator | FIRGELLI
Estimate an ideal adhesion limit from powered axle count, axle load and an assumed wheel–rail coefficient, with clear distinctions from locomotive ratings.