"It's a battery operated locomotive. Got DC traction drive on each wheel for the uber low end torque. Max torque at stall current, right? This for the printing industry, but I'm pretty sure my life choice industry of Big Steel had this stuff in the Edwardian era too. The independent DC drive per wheel is still what we use for moving 40 ton steel coils around the plant, and still they're run off rechargeable batteries, though have all kinds of computer controls and vision and stuff. What a…"
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