Welcome Guest!
WIn order to take advantage of all the great features that Waterloo Region Connected has to offer, including participating in the lively discussions below, you're going to have to register. The good news is that it'll take less than a minute and you can get started enjoying Waterloo Region's best online community right away.
or Create an Account




Thread Rating:
  • 0 Vote(s) - 0 Average
  • 1
  • 2
  • 3
  • 4
  • 5
Cincinnati Streetcar ("Cincinnati Bell Connector")
#11
It also looks like they have a single overhead cable.
Reply
#12
Thinner poles, spaced closer together, wtih a single wire.

Given the entire route is one-way on every street, this seems a better fit for their layout.
My Twitter: @KevinLMaps
Reply
#13
(09-05-2017, 01:24 PM)KevinL Wrote: Thinner poles, spaced closer together, wtih a single wire.

Given the entire route is one-way on every street, this seems a better fit for their layout.

We could likely have used this on our trains, but they're seemingly unwilling to go with a lighter design, preferring instead to overbuild everything.
Reply
#14
Tom - catenary is always singular, just FYI. Big Grin
For daily ion construction updates, photos and general urban rail news, follow me on twitter! @Canardiain
Reply
#15
From wikipedia ... don't know whether this is the rationale for the double wire on our LRT:

Quote:Depot areas tend to have only a single wire and are known as "simple equipment" or "trolley wire". When overhead line systems were first conceived, good current collection was possible only at low speeds, using a single wire. To enable higher speeds, two additional types of equipment were developed:

Stitched equipment - uses an additional wire at each support structure, terminated on either side of the messenger/catenary wire.

Compound equipment - uses a second support wire, known as the "auxiliary", between the messenger/catenary wire and the contact wire. Droppers support the auxiliary from the messenger wire, and additional droppers support the contact wire from the auxiliary. The auxiliary wire can be of a more conductive but less wear-resistant metal, increasing the efficiency of power transmission.

Dropper wires traditionally provide physical support of the contact wire without joining the catenary and contact wires electrically. Contemporary systems use current-carrying droppers, which eliminate the need for separate wires.
Reply
#16
Our system has double wire because the messenger wire bears more current than the contact wire can. This permits the TPSS' houses to be spaced further apart, and theoretically allows for larger LRV current draw (ie, faster acceleration, or longer trains).

As your quote points out, full dual-wire "stitched" catenary allows for higher speeds, too, because the contact wire can be kept more horizontally straight (parallel to the ground). At higher speeds, a single wire would sag into a catenary curve (math term - where the system gets its name) and the pantograph would bounce up and down.
For daily ion construction updates, photos and general urban rail news, follow me on twitter! @Canardiain
Reply
#17
(09-05-2017, 04:07 PM)Canard Wrote: Tom - catenary is always singular, just FYI. Big Grin

I keep my yellow catenary in a cage  Tongue
Reply
« Next Oldest | Next Newest »



Forum Jump:


Users browsing this thread: 1 Guest(s)

About Waterloo Region Connected

Launched in August 2014, Waterloo Region Connected is an online community that brings together all the things that make Waterloo Region great. Waterloo Region Connected provides user-driven content fueled by a lively discussion forum covering topics like urban development, transportation projects, heritage issues, businesses and other issues of interest to those in Kitchener, Waterloo, Cambridge and the four Townships - North Dumfries, Wellesley, Wilmot, and Woolwich.

              User Links