Discussion related to commuter rail and transit operators in California past and present including Los Angeles Metrolink and Metro Subway and Light Rail, San Diego Coaster, Sprinter and MTS Trolley, Altamont Commuter Express (Stockton), Caltrain and MUNI (San Francisco), Sacramento RTD Light Rail, and others...

Moderator: lensovet

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  by nomis
 
There is a pulley and weight visible on the left-most catenary pole in the photo above by rohr turbo. Typically an motor's roof is too busy for monitoring gear, but SEPTA and AMTRAK have no issues placing the equipment on an 85ft long roof of a coach, in revenue service or otherwise.
  by lensovet
 
even LR lines here use constant tension cat, which is pretty hilarious.

the reason these look so diminutive is because there are only two tracks. there are much bigger poles around 4-track sections. still waiting for any wire to be strung up there though.
  by SRich
 
rohr turbo wrote: Sat Sep 26, 2020 12:51 pm Image
More progress on the peninsula. Clearer skies finally.
Nice picture, so is possible that double stack trains can pass under this catenary
  by RRspatch
 
SRich wrote: Mon Nov 16, 2020 2:11 pm
rohr turbo wrote: Sat Sep 26, 2020 12:51 pm Image
More progress on the peninsula. Clearer skies finally.
Nice picture, so is possible that double stack trains can pass under this catenary
I'm going to guess NO, double stacks will not fit under that catenary. The catenary needs to be higher to clear them as seen below.

https://youtu.be/zD27XOiSoMI

I will admit it looks like Indian Railways is using standard flat cars instead of "well cars" which probably adds 12 to 18 inches to the height of the containers.
  by rohr turbo
 
I think I read that catenary height varies from 18 to 23 ft over the whole route. The section in my photo is in Palo Alto and does not see double stacks. But the section between tamien and Santa Clara is a major UP route that probably does see them and needs higher clearance.
  by lensovet
 
Here are some photos from that southern segment.
IMG_0700.jpg
IMG_0699.jpg
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  by west point
 
2 points Not well cars and the containers are all international which are shorter than US domestic.
  by Backshophoss
 
This is 25 KV,60hz wire, the air gap needs to be higher for Double Stacked 53 ft containers.
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