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| Re: PHOTOS: first day of Denver RTD B Train (1404042) | |||
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Re: PHOTOS: first day of Denver RTD B Train |
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Posted by nasadowsk on Sun Jul 31 20:05:09 2016, in response to Re: PHOTOS: first day of Denver RTD B Train, posted by Jersey Mike on Sun Jul 31 19:53:00 2016. Yeah, but bulking up the transformer and propulsion shouldn't have added THAT much weight. The bigger issue was ignitrons blew out pretty regularly, especially the ones designed for welding service, not rail use. The British had the same issues and ended up just going full solid state.GE's system was better on paper, but the implementation was a bit sucky and the traction motor design was a step backwards (though maybe Budd/Westinghouse couldn't resolve the gearbox issues on the PIII cars?) The three tier rectifier setup looks great on paper, but ex NJT folks tell me the power factor was awful, and the implementation was typical GE overcomplexity. I have the weight breakdowns somewhere in my pile of stuff. It's quite intersting where the gains were from, because most of it isn't what you'd expect. |
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