by rhodiecub2
Does anyone know of all then destinations on the green line roll signs?
Railroad Forums
Moderators: sery2831, CRail
Otto Vondrak wrote:You can program them to say anything you want. Not the same as a real printed rollsign!Right! so maybe they have some random stuff, which you may have thought of if you had thought before just being critical of what i said.
-otto-
CRail wrote: Right! so maybe they have some random stuff, which you may have thought of if you had thought before just being critical of what i said.All of the LRV's are electrically capable of running with poles. The first two units delivered had both pantos and poles on the roof, and were tested on non-panto wiring such as Arborway past Heath and Watertown, and used for years for various non-revenue push-pull jobs on the A-line when they needed something with a little more muscle than a PCC. There's even pictures floating on the Internet of a fantrip 25 years ago on the A where you can clearly see the pole up and the pantograph down. The remaining units were delivered with just pantographs, but a simple pole hookup is all that's physically needed to get them operational for the M overhead. All of them could've been shipped with poles if needed...the T just didn't need to do that past the first test cars because by that point it had gotten enough of its overhead upgraded to panto compatibility to not need 'em.
Why did the LRV's have mattapan/ashmont? most of them came with pantographs, so they could not have gone on that line.
CRail wrote:F-Line: It is my understanding that with the added HVAC units, the LRV's cannot go back to poles. Which would not affect the sign but it would, however, prevent them from operating to mattapan. Correct me if im wrong.Possibly...although that might have more to do with physical obstructions to a pole installation because of all the extra stuff now mounted on the roofs than it does with electrical compatibility (both inputs were designed to suck the same amount of juice, so if the pantos can power the A/C units just fine the poles ought to be able to do the same). The poles used to trail off the back of the cars when up whereas the pantographs are closer to the front and obviously don't require any horizontal clearances to work. That meant the poles spanned across a lot of the area where the A/C units are now...so they may not be able to rest flat on the car when poles are down (more an issue when the cars are in motion under pantograph use than in Mattapan where poles would either be up all the time or only down when the car is motionless in the yard). I've never heard the rebuild work or A/C's used as a reason why those couldn't go to Mattapan, just the same "maintenance is hard because parts are scarce, and the cars were crap to begin with" line that they're giving now (sensible enough)...so it must not be completely impossible or prohibitive to do.
CRail wrote:Otto Vondrak wrote:You can program them to say anything you want. Not the same as a real printed rollsign!Right! so maybe they have some random stuff, which you may have thought of if you had thought before just being critical of what i said.
-otto-
Why did the LRV's have mattapan/ashmont? most of them came with pantographs, so they could not have gone on that line.