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posted by Fnord666 on Wednesday December 06, @06:24AM   Printer-friendly
from the quite-the-charge(r) dept.

Siemens SC-44 Charger seen rolled out across country to replace some older locomotives for corridor work.

https://seattle.curbed.com/2017/11/20/16683002/amtrak-cascades-new-train-model

The new Siemens Charger locomotives, with 16-cylinder, 4,400-horsepower engines, are both lighter and quieter, and meet EPA emission standards. The trains will travel the same speed as before—79 miles per hour—but they'll reach the top speed faster.

http://urbanmilwaukee.com/2017/11/16/plenty-of-horne-amtrak-rolls-out-new-locomotives/

The new locomotives can also take you to from Chicago to Detroit, or Chicago to St. Louis, for example, and they can do it using one-third the fuel, emitting one-tenth the pollution, and at speeds up to 125 miles per hour. (The Chicago-St. Louis route has been cut from 5-1/2 hours to 4-1/2 hours thanks to the new engines and track improvements.

http://thesouthern.com/news/local/communities/carbondale/amtrak-showcases-features-of-new-locomotives/article_6c9b8d54-62a6-51f6-a818-ca2fed76c033.html

"A lot of our customers care about the earth and about pollution, and these are so much cleaner to operate, and they're better for our partners at IDOT and the customers because they're going to cost less to operate in that they get better mileage," said Marc Magliari, Amtrak spokesman.

Just saw one while I was out for a cigar and thought it was pretty cool, I figure others might find it interesting as well. I have been taking my kids to go watch them do trackwork on the north-south line in Oregon and was wondering why they were so extensive in replacing all of the old ties. Although the speed limit is 79 I wonder if this will be increased with updated track and new locomotives. Here is hoping someone models it soon so I can waste money.

https://en.wikipedia.org/wiki/Siemens_Charger
4400 horsepower, top speed of 125, and meets EPA Tier VI emission standards.


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  • (Score: 2) by Grishnakh on Wednesday December 06, @09:59PM

    by Grishnakh (2831) on Wednesday December 06, @09:59PM (#606432)

    That all sounds like a good analysis, but one thing I'll point out is that concrete technology isn't static (unlike wood, where trees aren't exactly evolving to make better wood for railroad uses), and is constantly improving. Surely some research has been done into making better concrete formulations for this application. So theoretically, the case for concrete should be getting better over time versus wood as the technology improves.

    As for reusing old concrete, I thought there were already ways that old concrete was recycled to be used in new concrete, not for higher-performance things like buildings, but usually for applications where quality isn't quite so important, like maybe road beds, or other "filler" applications. There should be no shortage of places where old concrete can be used as a low-cost filler.

    The paper you cited is from 1993. That's almost a quarter-century old now. I wonder if the equation has changed much since then.

    Note that I'm in no way an expert on concrete or railroads, and it's completely out of my field, I'm just raising a few questions, as I'm curious about the subject.

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