AC Ownership

nanaimo73 · July 1, 2006, 11:37am

Thanks John.
I think I’m just going to avoid that mess and just put in links to the UtahRails site. He has done an outstanding job with that.
I’m having enough problems with AC6000CW’s, trying to find out how many there are of each type (4400 hp vs 6000), and I’m not even sure what to call the 4400 hp ones.

beaulieu · July 1, 2006, 3:09pm

Yes Don has done an excellent job on that website. UP’s AC6000CWs with the 4400hp FDL16 engine are numbered in the 7300 series, the AC6000CWs with the 6000hp HDL16 engine are numbered in the 7500 series.

nanaimo73 · July 3, 2006, 7:51am

That’s easy to understand. Thanks.
Now I just have to finish it in 10 days before the apocalypse.

CSSHEGEWISCH · July 6, 2006, 2:27pm

Even before NAFTA, there would be no duties on these locomotives since they would be considered US-made goods returned.

beaulieu · July 7, 2006, 9:37am

Dale, the first SD90MAC-H on the UP ended as number 8500 and was transfered to EMD Leasing as EMLX 8500 not as EMLX 8200, here is a photo link in its new guise on KCS
http://www.railpictures.net/viewphoto.php?id=144083

nanaimo73 · July 7, 2006, 9:59am

Thanks John.
I’ve got that fixed, oops.

Are all of the CSX AC6000CW’s (600s and 5000s) powered by HDL’s ?

beaulieu · July 8, 2006, 2:22pm

All were built that way, CSXT 699 blew up its diesel during the time that GE was having big problems with bearings on the HDL diesel, and so it received a temporary replacement FDL16 engine. That was about 5 years ago, the temporary engine is still in it, otherwise they all have the HDL engine.

nanaimo73 · July 8, 2006, 8:58pm

Allright. Now I can fini***his.

oltmannd · June 15, 2007, 1:00pm

Wow! Nicely done summary!

BNSFandSP · January 2, 2012, 11:28am

Might I ask where are the MP15ACs, GP15ACs, GP38ACs, and SD38ACs?

oltmannd · January 3, 2012, 9:59am

They are not AC propulsion. The AC stands for AC main generator, the output of which is rectified and fed directly to DC traction motors. Slip rings and diodes replaced the commutator on the old DC main generators. Everything downstream remained the same.

AC propulsion has an AC main generator whose output is rectified to DC, but then chopped back to AC to feed AC traction motors.

Control of the DC machines is done by varying the field on the main generator. Control on the AC machines is done by varying the frequency to the traction motors.

Anonymous · January 8, 2012, 4:29pm

This is valuable information, but it really belongs under locomotives. The webmaster should move it.