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Re: Two Trolley-Poles (was [MELB] Trams with Trolley--Poles)




"Robin Payne" <rcp27@cam.ac.uk> wrote in message
9do3ov$njf$1@pegasus.csx.cam.ac.uk">news:9do3ov$njf$1@pegasus.csx.cam.ac.uk...
> As this makes clear, although the tram is a bogie vehicle, the poles are
> mounted almost centrally and still extend beyond the ends.  At the museum
> you can look down from above where you can see that the hubs of the two
> poles are only a coupld of inches apart.  Why in such a case would you
want
> 2 poles?
>
For turning a pole there must be some space next to the tramcar. In a narrow
and/or busy street this space is often failing. Than you want two.
In Liege (Belgium) there were for the same reason even bi-directional
trolley-buses with two pairs of trolley poles!
See http://www.tec-liege-verviers.be/musee_24.htm

--
Ernst Kers
The Tram of Porto
http://home.planet.nl/~ekers/