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Re: EMD Field Loop Dynamic Brake Control

 by Pneudyne ¦  Fri Apr 19, 2024 11:42 pm ¦  Forum: EMD - Electro-Motive (Progress Rail, General Motors) ¦  Topic: EMD Field Loop Dynamic Brake Control ¦  Replies: 40 ¦  Views: 21648

Thanks for that. It would appear that the Fairbanks Morse Universal Dynamic Braking system was broadly similar to that later adopted by Alco and those developed by the railroads, e.g. Western Maryland as detailed upthread. That is, locomotives equipped with the FM universal system provided control s...

Re: Condensing Steam Locomotive Oil Removal

 by Pneudyne ¦  Sat Apr 13, 2024 12:47 am ¦  Forum: General Discussion: Locomotives, Rolling Stock, and Equipment ¦  Topic: Condensing Steam Locomotive Oil Removal ¦  Replies: 1 ¦  Views: 292

For one example of how it was done, perhaps refer to the following ILE paper: Class "25” Condensing Locomotives on the South African Railways - Design and Operating Experiences By Prof. Dr.-Ing. R. Roosen (Henschel-Werke) ILE (Institution of Locomotive Engineers) Paper #607, 1960 March It conta...

As far as I know, but not necessarily correct, EMD made the change to 27-pin MU jumpers with the F3 in the F-series and with the E-8 in the E-series. The later FT (and I think the F-2) had 21-pin jumpers, although the earlier FT appears to have had 17-pm. That needs verification, though. The E-7 (an...

Trains 196812 p.51.jpg
Trains 196812 p.51.jpg (294.66 KiB) Viewed 347 times

Trains 196812 p.48.jpg
Trains 196812 p.48.jpg (424.38 KiB) Viewed 352 times
Trains 196812 p.49.jpg
Trains 196812 p.49.jpg (281.64 KiB) Viewed 352 times
Trains 196812 p.50.jpg
Trains 196812 p.50.jpg (372.41 KiB) Viewed 352 times

The Trains 1968 December article “Lash “em Up” is useful reference. I have attached a scan of it in this and following postings. parts.

Trains 196812 p.44,45.jpg
Trains 196812 p.44,45.jpg (1.45 MiB) Viewed 354 times
Trains 196812 p.46.jpg
Trains 196812 p.46.jpg (323.91 KiB) Viewed 354 times
Trains 196812 p.47.jpg
Trains 196812 p.47.jpg (330 KiB) Viewed 354 times

Re: "Almost real" EMD locomotives

 by Pneudyne ¦  Mon Jan 01, 2024 3:07 pm ¦  Forum: EMD - Electro-Motive (Progress Rail, General Motors) ¦  Topic: "Almost real" EMD locomotives ¦  Replies: 28 ¦  Views: 10199

So basically an EMD version of ALCo's "World Locomotive" FA variant. It might be slightly easier to argue the negative on that proposition. Firstly, on the timeline: I do not know when the EMD B was first announced, but the first order, 40 of the A1A-A1A variant for the then Eastern Benga...

Re: "Almost real" EMD locomotives

 by Pneudyne ¦  Sun Dec 31, 2023 8:55 pm ¦  Forum: EMD - Electro-Motive (Progress Rail, General Motors) ¦  Topic: "Almost real" EMD locomotives ¦  Replies: 28 ¦  Views: 10199

The second two (of four) pages on the Model B from the GM brochure:

GM DE Locos p.15.jpg
GM DE Locos p.15.jpg (398.66 KiB) Viewed 579 times
GM DE Locos p.16.jpg
GM DE Locos p.16.jpg (899.17 KiB) Viewed 579 times

Cheers,

Re: "Almost real" EMD locomotives

 by Pneudyne ¦  Sun Dec 31, 2023 8:53 pm ¦  Forum: EMD - Electro-Motive (Progress Rail, General Motors) ¦  Topic: "Almost real" EMD locomotives ¦  Replies: 28 ¦  Views: 10199

The first two (of four) pages on the Model B from the GM brochure:

GM DE Locos p.13.jpg
GM DE Locos p.13.jpg (655.84 KiB) Viewed 584 times
GM DE Locos p.14.jpg
GM DE Locos p.14.jpg (428.63 KiB) Viewed 584 times

Cheers,

Re: "Almost real" EMD locomotives

 by Pneudyne ¦  Fri Dec 22, 2023 6:29 pm ¦  Forum: EMD - Electro-Motive (Progress Rail, General Motors) ¦  Topic: "Almost real" EMD locomotives ¦  Replies: 28 ¦  Views: 10199

All eight pages of the EMD R brochure are included in the attached .pdf.

Cheers,

(743.62 KiB) Downloaded 30 times

Re: "Almost real" EMD locomotives

 by Pneudyne ¦  Fri Nov 10, 2023 3:18 pm ¦  Forum: EMD - Electro-Motive (Progress Rail, General Motors) ¦  Topic: "Almost real" EMD locomotives ¦  Replies: 28 ¦  Views: 10199

I have an EMD brochure, undated but probably from 1954 or 1955, that covers the export models R, B, G-12 and G-8. Here are a couple of pages from the R, broad gauge, and R, universal gauge sections: GM DE Locos p.07.jpg GM DE Locos p.11.jpg The equipment schedule was probably similar to that used fo...

Re: CN: 4-8-4 vs 4-8-2

 by Pneudyne ¦  Sun Sep 03, 2023 8:00 pm ¦  Forum: Steam Locomotives ¦  Topic: CN: 4-8-4 vs 4-8-2 ¦  Replies: 11 ¦  Views: 1261

That Trains article you are thinking of might be: “Why the H-10 was a Landmark Locomotive”, by Alan L. Bates, in the 1975 June issue. Let me know if you want a copy, and also of the LeMassena USRA 4-8-2 article.


Cheers,

Re: CN: 4-8-4 vs 4-8-2

 by Pneudyne ¦  Thu Aug 31, 2023 10:46 pm ¦  Forum: Steam Locomotives ¦  Topic: CN: 4-8-4 vs 4-8-2 ¦  Replies: 11 ¦  Views: 1261

Hi Allen: Yes, by itself, that reference to the USRA heavy 4-8-2 does look somewhat out of context. To expand somewhat, I was thinking in terms of the Robert Le Massena essay “The USRA Heavy 4-8-2 and its Illustrious Ascendants” (1). The claimed “ascendants” included various 4-8-2 and 4-8-4 designs ...

Re: CN: 4-8-4 vs 4-8-2

 by Pneudyne ¦  Sun Aug 20, 2023 10:03 pm ¦  Forum: Steam Locomotives ¦  Topic: CN: 4-8-4 vs 4-8-2 ¦  Replies: 11 ¦  Views: 1261

The D&H K-62 was probably a good example of a mid-sized 4-8-4. Although derived from the established Rock Island 4-8-4, it had some major as well as detailed changes, to the extent that one wonders how it got past the WPB stipulation that only existing designs be used. One could say that it was ...

Re: GE U50 and GTEL informations

 by Pneudyne ¦  Tue Aug 08, 2023 2:11 am ¦  Forum: General Electric ¦  Topic: GE U50 and GTEL informations ¦  Replies: 60 ¦  Views: 8782

In the run-up to the GE U50 and Alco C855 is that in 1962, UP had laid out its own idea for a 5000 hp, twin-engined locomotive. A drawing of this is shown at Don Strack’s “Utah Rails” site, at: https://donstrack.smugmug.com/UtahRails/Union-Pacific/UP-Miscellaneous/i-T95bPCR/A. This proposal was show...

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