Re: Boston, Revere Beach and Lynn
| January 22, 2010 12:50PM |
HUH? The photo Dave Grandt showed indicated the car had trolley poles on the roof (not to be confused with pantographs, line poles, single wire, or catenary). So until I found the photo below I think the full question remained unanswered.
Many high-speed interurban lines used catenary for overhead and also used trolley poles with wire shoes for electrical contact. You typically see catenary in used for most applications that use pantographs for collection. So trolley poles, pantographs, single contact wire, and catenary overhead are not mutually exclusive.
The catenary curve in geometry is the same as that you see on a drooping clothes line. Catenary overhead uses this natural curve and has extensions which drop down to a contact wire. In the photo below you can see these where the wire is visible against the building in the background.
Aside from a few streetcar lines, and one suburban line in Denver, there were not many other electric narrow gauge passenger trains. I think the BRB&L was probably the largest narrow gauge electric of them in North America. Now back to your regular Chama/Durango discussion.
Boston Revere Beach and Lynn at Dave's Rail Pics
Many high-speed interurban lines used catenary for overhead and also used trolley poles with wire shoes for electrical contact. You typically see catenary in used for most applications that use pantographs for collection. So trolley poles, pantographs, single contact wire, and catenary overhead are not mutually exclusive.
The catenary curve in geometry is the same as that you see on a drooping clothes line. Catenary overhead uses this natural curve and has extensions which drop down to a contact wire. In the photo below you can see these where the wire is visible against the building in the background.
Aside from a few streetcar lines, and one suburban line in Denver, there were not many other electric narrow gauge passenger trains. I think the BRB&L was probably the largest narrow gauge electric of them in North America. Now back to your regular Chama/Durango discussion.
Boston Revere Beach and Lynn at Dave's Rail Pics
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488 stops for water at Los Pinos tank on closing day Oct. 1979. Photo courtesy Don Richter
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