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All the information here is great- thanks everyone! Electric locomotives seem to have "shoes" (for lack of a better word) on top of their pantographs while trolley cars have, well, trolleys- flanged wheels at the top of the pole. A couple of questions- First, would not the pantograph "shoes" cause some kind of wear on overhead wiring, particularly with a train at high speed? I know that some interurbans were capable of fairly high speed, and they seemed to have poles with trolleys. Did the railroads experiment with a roller type arrangement on the pantograph? Wouldn't that reduce wear on the wiring? Seems to me that a shoe in contact with wire moving at 80 plus MPH would cause a lot of friction and heat.... Thanks, Erik
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