[PRCo] Re: Pittsburgh Overhead

[Fred Schneider]

Don't know if this has been mentioned in any of the othr messabes on this subject but some operations, Baltimore being one of them, have erected catenary instead of a single wire to eliminate the need for a separate feeder cable parallel to the line.  

-----Original Message-----
From: Boris Cefer <westinghouse at iol.cz>
Sent: Mar 16, 2005 2:48 PM
To: pittsburgh-railways at dementia.org
Subject: [PRCo] Re: Pittsburgh Overhead

A steel lobby.

Boris

----- Original Message ----- 
From: "Harold G." <transitmgr2 at earthlink.net>
To: <pittsburgh-railways at dementia.org>
Sent: Wednesday, March 16, 2005 9:38 PM
Subject: [PRCo] Re: Pittsburgh Overhead


> Greetings to all
> 
> heavier overhead is not always needed.
> Pgh Warrington Ave and up the hill is overbuilt in\
> my opinion.  Catenary is not always a requirement.
> It often comes from the culture of the designer.
> 
> San Francisco LRV and Boston run on ordinary trolley
> wire in many places.  In Europe, you will find heavy
> construction in Germany with pullies, etc.  But in France.
> noit so.  The French often use a close double trolley wire
> not visible to the eye.   This is on most new French cities.
> They also bury the feeder cable...a real problem in Pgh
> These are new systems like Lyon, Grenoble, Nantes, etc.
> 
> Even when some cities use catenary out on the line, they
> use simple trolley wire downtown.
> 
> Pgh is overbuilt and over designed in my opinion.
> 
> Harold