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| Re: Pantograph for Trackless Trolley vs. Light Rail or MU (486533) | |||
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Re: Pantograph for Trackless Trolley vs. Light Rail or MU |
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Posted by WillD on Thu Sep 6 10:35:25 2007, in response to Re: Pantograph for Trackless Trolley vs. Light Rail or MU, posted by Orange Blossom Special on Thu Sep 6 10:16:30 2007. Cinncinatti Street Railway used two poles rather than the wheel and track for power return. I believe the wire was much closer than is commonly done on trolleybus systems, but that the Cinncinatti trolleybuses used the same wire spacing as the trolleys.http://davesrailpix.com/csr/csr.htm with a pantograph i had thought of just putting the streetcar wire lower probably. But then I just realized, it would have to be the exact same route, even depot. and no turn-off's. So I wonder if your tram can have a trolley pole and panto, and switch off possibly. You probably could have a switch off, you'd just have to bring the trolleybus wires down to the same height as the streetcar wire. In order to keep the pantograph from shorting across the trolleybus wires they'd have to be isolated from the ground for a few feet on either side of the junction. This would mean the trolleybuses would be without power for a few dozen seconds, but with current trends toward batteries, diesel generators, supercapacitors or some other mode of energy storage or generation that wouldn't be a significant problem. Of course once you get the trolleybus wire down to the same level as the streetcar wire then you can do whatever you want with some form of a switch, frog, and skate combination, diverge the trolleybus, diverge the streetcar, or whatever. |
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