How Locomotives Pull So Much

Stuck at the crossing, watching car after car roll by — how do just one or two engines move all of it? It's not horsepower. The spot where each wheel grips the rail is only the size of a dime. So how does a 400,000-pound locomotive get traction at all instead of just spinning? And why is starting a stopped train harder than pulling it up a hill? The answer is a clever trick hiding in the couplers — the reason you hear that bang-bang-bang of clanks at the crossing. Watch and you'll never see a passing train the same way. 🔧 Subscribe for the hidden engineering behind things you walk past every day. 👇 Longest train you've ever waited on at a crossing? Drop it below. #Trains #Locomotive #Physics #Engineering #HowItWorks #Railroad #Trainspotting #Railfan #Friction #FreightTrains #SteelWheels #MechanicalEngineering #Diesel #RailwayHistory #Infrastructure