Comments on: What decade is this? Action red meets MLW on the CP mainline at Guelph Junction as the London Pickup with 3018 passes by OSR Job two with RS-18 182. The Guelph Junction Railway job is putting away their train in the interchange after arriving from Guelph. This scene could have been 2002, but it was in the waning months of the OSR serving the GJR in Summer 2020. If I recall correctly 3018 was the last Action Red GP38 and has since been sold in 2022 to S&S who have since resold to SBZX 3018 reportedly down in Mexico now. 3018 was also a GP38AC. http://www.railpictures.ca The BEST Canadian photos on the Internet, eh? Tue, 07 Apr 2026 20:49:57 +0000 hourly 1 http://wordpress.org/?v=3.1 By: Stephen C. Host http://www.railpictures.ca/?attachment_id=56443#comment-64309 Stephen C. Host Sat, 12 Apr 2025 03:16:21 +0000 http://www.railpictures.ca/wp-content/uploads/2025/04/RPCA_OSR_CP_STRSCH_0228-c.jpg#comment-64309 Thanks gang Thanks gang

]]> By: NiagaraMike11 http://www.railpictures.ca/?attachment_id=56443#comment-64269 NiagaraMike11 Mon, 07 Apr 2025 15:06:06 +0000 http://www.railpictures.ca/wp-content/uploads/2025/04/RPCA_OSR_CP_STRSCH_0228-c.jpg#comment-64269 Nicely done! Nicely done!

]]> By: Stephen C. Host http://www.railpictures.ca/?attachment_id=56443#comment-64252 Stephen C. Host Sat, 05 Apr 2025 23:35:00 +0000 http://www.railpictures.ca/wp-content/uploads/2025/04/RPCA_OSR_CP_STRSCH_0228-c.jpg#comment-64252 LLPX 2210 is a GP38AC! This unit was on GEXR for a long time.. LLPX 2210 is a GP38AC! This unit was on GEXR for a long time..

]]> By: L. Parks http://www.railpictures.ca/?attachment_id=56443#comment-64251 L. Parks Sat, 05 Apr 2025 21:41:53 +0000 http://www.railpictures.ca/wp-content/uploads/2025/04/RPCA_OSR_CP_STRSCH_0228-c.jpg#comment-64251 I'll take a stab at it, please feel free to add or correct the following. In my limited understanding, locomotives, just like cars went from using DC generators to using AC alternators. In your car, there is a little bank of solid state devices converting/rectifying that AC to DC so that the battery will stay charged. Again, "I believe", the GP38ac was the initial start of the -2 line of locos. By using an alternator, this simplified the DC system that was being used with all the larger relays and transition etc etc. So, it could be said that modular electronics came into reality with the -2 line of locos (for GM). The troubled DC system was replaced with plug in electronics. Just like in a car, the AC power still has to be converted/rectified to DC on dash 2's, those are still DC traction motors in the trucks. Today's locos use AC traction motors, but that AC from the alternator still has to be converted into 3 phase before it can be fed to the traction motors. Or something like that, I won't pretend to understand what is going on under the hood of a modern AC unit. Steve, those AC traction motors are all the rage in road units because they can dig down much deeper than a DC traction motor. No stalling of brushes on the commutator. Let the sacrifice begin. :-) I’ll take a stab at it, please feel free to add or correct the following. In my limited understanding, locomotives, just like cars went from using DC generators to using AC alternators. In your car, there is a little bank of solid state devices converting/rectifying that AC to DC so that the battery will stay charged. Again, “I believe”, the GP38ac was the initial start of the -2 line of locos. By using an alternator, this simplified the DC system that was being used with all the larger relays and transition etc etc. So, it could be said that modular electronics came into reality with the -2 line of locos (for GM). The troubled DC system was replaced with plug in electronics. Just like in a car, the AC power still has to be converted/rectified to DC on dash 2′s, those are still DC traction motors in the trucks. Today’s locos use AC traction motors, but that AC from the alternator still has to be converted into 3 phase before it can be fed to the traction motors. Or something like that, I won’t pretend to understand what is going on under the hood of a modern AC unit.
Steve, those AC traction motors are all the rage in road units because they can dig down much deeper than a DC traction motor. No stalling of brushes on the commutator.
Let the sacrifice begin. :-)

]]> By: sdfourty http://www.railpictures.ca/?attachment_id=56443#comment-64242 sdfourty Sat, 05 Apr 2025 17:12:18 +0000 http://www.railpictures.ca/wp-content/uploads/2025/04/RPCA_OSR_CP_STRSCH_0228-c.jpg#comment-64242 AC likely more cost effective / better use of HP. AC likely more cost effective / better use of HP.

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