Скачать или смотреть How a Railroad Handcar Works | Human-Powered Train Machine! 🚂💪 🚂 Manual Rail Power Explained

A railroad handcar—also known as a pump trolley—is a manually powered rail vehicle historically used by railway workers.
By pumping the handle up and down, operators turn a crank system that drives the wheels along the track.
Simple mechanics… but surprisingly efficient!

In this video, you’ll see:
⚙️ How the pump lever moves the crankshaft
🚂 How human motion converts to wheel rotation
🔧 Why rail workers used handcars for inspections
💨 How such a simple machine moves so fast

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