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| From | Ruben Safir <mrbrklyn@panix.com> |
|---|---|
| Newsgroups | nyc.transit |
| Subject | Re: huh? "12,800 feet of new aluminum third-rail"?? |
| Date | 2025-10-07 23:13 +0000 |
| Organization | PANIX Public Access Internet and UNIX, NYC |
| Message-ID | <10c46r7$ebt$1@reader2.panix.com> (permalink) |
| References | <Pine.NEB.4.64.2510062000350.5657@panix2.panix.com> <10c1q3g$tre$1@gal.iecc.com> |
John Levine <johnl@taugh.com> wrote: > According to danny burstein <dannyb@panix.com>: >>. Improvements so far include the replacement of 128 bridge spans that >>connect tracks, column to column; the addition of 12,800 feet of new >>aluminum third-rail; and the addition of 6,500 feet of signal cables, >>25,000 feet of new running rail, and over 40,000 feet of new communication >>cables. >> ====== >>rest: >>https://www.amny.com/nyc-transit/park-avenue-viaduct-metro-north-10062025/ >> >> huh? aluminium third-rail ?? Is that legit? Thanks > > Sure. Here's a company that makes them, aluminum with a steel cap. > > https://www.rail-fastener.com/the-third-rail.html > > Aluminum conducts much better than steel so I'd expect the power losses to > be lower, and in new construction you could put the power feeds further apart. > > It says "The conductivity of aluminum alloy is 3-4 times that of low carbon steel." Not Aluminum Oxide...
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huh? "12,800 feet of new aluminum third-rail"?? danny burstein <dannyb@panix.com> - 2025-10-06 20:02 +0000
Re: huh? "12,800 feet of new aluminum third-rail"?? John Levine <johnl@taugh.com> - 2025-10-07 01:24 +0000
Re: huh? "12,800 feet of new aluminum third-rail"?? tls@panix.com (Thor Lancelot Simon) - 2025-10-07 22:14 +0000
Re: huh? "12,800 feet of new aluminum third-rail"?? danny burstein <dannyb@panix.com> - 2025-10-07 22:34 +0000
Re: huh? "12,800 feet of new aluminum third-rail"?? Ruben Safir <mrbrklyn@panix.com> - 2025-10-07 23:15 +0000
Re: huh? "12,800 feet of new aluminum third-rail"?? Ruben Safir <mrbrklyn@panix.com> - 2025-10-07 23:20 +0000
Re: huh? "12,800 feet of new aluminum third-rail"?? Ruben Safir <mrbrklyn@panix.com> - 2025-10-07 23:13 +0000
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