XPost: uk.railway, uk.transport.london   
      
   On 22.12.17 0:33, hounslow3@yahoo.co.uk wrote:   
   > On 21.12.17 23:45, Charles Ellson wrote:   
   >> On Thu, 21 Dec 2017 13:33:34 +0000, "hounslow3@yahoo.co.uk"   
   >>  wrote:   
   >>   
   >>> On 21.12.17 10:34, boltar@cylonHQ.com wrote:   
   >>>> On Thu, 21 Dec 2017 00:24:04 +0000   
   >>>> "hounslow3@yahoo.co.uk"  wrote:   
   >>>>> On 20.12.17 22:44, Clive D.W. Feather wrote:   
   >>>>>> In article , hounslow3@yahoo.co.uk   
   >>>>>>  writes   
   >>>>>>>> What about in the reverse direction? You want the pan to come up   
   >>>>>>>> while   
   >>>>>>>> in the transition area.   
   >>>>>>>   
   >>>>>>> Nope, got to set the mode switch and manually raise them. Pans   
   >>>>>>> will also   
   >>>>>>> not go up if any part of the train is on contact with the 3rd rail.   
   >>>>>>   
   >>>>>> So what do you do at the equivalent of Drayton Park, where the train   
   >>>>>> comes to a stop on the 3rd rail but needs to start on the overhead   
   >>>>>> because the third rail ends 5 metres beyond the front of the stopped   
   >>>>>> train?   
   >>>>>>   
   >>>>> I was speaking about M-2s, and not about 313s. I assumed, in the   
   >>>>> latter   
   >>>>> case, that there is a mode switch.   
   >>>>   
   >>>> So you mean they won't go up automatically, not won't go up at all?   
   >>>   
   >>> Exactly. The driver (engineer) switches the power mode, then hits the   
   >>> "pan up" switch.   
   >>>   
   >>>> Because   
   >>>> if they won't go up at all when on 3rd rail you've got a problem,   
   >>>> unless over   
   >>>> there they have to coast off the 3rd rail   
   >>>   
   >>> They coast off the 3rd rail and then raise when completely under the   
   >>> wire and moving. It's done on the fly, AIUI, to help the train quickly   
   >>> assimilate the new power.   
   >>>   
   >> Not done here where OHLE and 3rd rail overlap or share a section of   
   >> track (Camden Bank). Changing on the move is a minority activity done   
   >> by cl.378s (only ?).   
   >   
   > Changing over at V-Zero on an M-2 will mean a rough start, and is thus   
   > ill-advised.   
   >   
   > Are the M-2s still running, by the way? I know that the New Haven Line   
   > EMUs are now mainly M-8, though I was under the impression that   
   > Metro-North were keeping a few around for peak services.   
      
   A few M-2s, that is.   
      
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