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[quote]QUOTE: Originally posted by jchnhtfd It is very rare to have both pans up, for the reasons given above. You simply don't need them. That being said, one of the more intriguing problems with high speed electric 'engines' (such as the Acela, or even more, the European high speed trains) is keeping the pantograph in firm enough contact with the overhead to transmit the current. I recall an engineering demonstration run of a TGV, some years ago now, at night. The section of line used has a slight imperfection (you couldn't see it by eye, but it was there!) in the overhead -- and the shower of sparks which resulted when the pantograph it that at about 200 mph could be seen for miles. [/quote] I see arcing on the NEC everyday. There are a few high spots (a guess) on the NEC just south of the Wilmington Station. Do the pans adjust at all? Are they set at a fixed height?
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