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MRH 2017-12 - December 2017 Magazine feedback
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Joe Atkinson IAISfan Super User 3,774 posts
Joe Atkinson IAISfan

First Look

Just a note regarding the pre-release issue:  In First Look, it's mentioned that "CSX refers to their Tier IV locomotives as ET44AH, where the H apparently stands for High Adhesion, due to a software upgrade."  I could be wrong, but I believe the "H" stands for Heavy.

From the GE Evolution Series Wikipedia page, https://en.wikipedia.org/wiki/GE_Evolution_Series :

Quote:

The "H" in ES44AH stands for "heavy", which is in reference to a combination of subsystems that produce high levels of tractive effort at low speeds. In order to be classified as an "AH" by CSX, a locomotive has to have not only an increased nominal weight (currently to 432,000 pounds or 196,000 kilograms), but also (1) steerable trucks, (2) TM3 adhesion control software, (3) software that extends to 33,000 pounds (15,000 kg) from 30,000 pounds (14,000 kg) the maximum amount of tractive effort that each traction motor is permitted to produce, and (4) GE's Rail Cleaner, which directs high-pressure air onto the rails in front of the sand nozzles forward of axle number one.

Joe Atkinson
Modeling Iowa Interstate's 4th Sub, May 2005
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jeffshultz MRH Staff 7,968 posts
jeffshultz

Huh.

They must have added that after I read through that article, although I seem to remember catching a comment that the AH's weren't actually any heavier than the other models. 

If that's my only error, I'm not going to sweat it. 

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Jeff Shultz - MRH Technical Assistant
DCC Features Matrix/My blog index
Modeling a fictional GWI shortline combining three separate areas into one freelance-ish railroad.
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ChrisH Active Member 67 posts
ChrisH

Very Good Issue

I just have been able to do a quick perusal of the Dec issue. Lots of interesting articles to read in much more detail later.

Thanks again!

Chris
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Logger01 Prolific poster 1,786 posts
Logger01

Dead links in Dec landscape pdf

The "Click here to rate or comment on this article" buttons in the Walthers Cornerstone
Concrete Street System tips article are bad in the December Landscape pdf version.

Ken K

gSkidder.GIF 
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