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The Conrail/CSX SD80MACs thrived on the Popes Creek Branch line in Maryland for a number of years, making our little/big orphaned branch line a fun place to fan.  While denying the future, there some of us who were hoping one day these monsters would return, but alas, it isn't too be.  I have been surprised for some time that NS didn't try to grab these units after CSX sidelined them.

 

Also denying the future, but I still hope that one day one of these unique Conrail units might find it's way to a museum intact in order to represent Conrail's exploration into the very high horsepower arena.

 

Bob

 

Originally Posted by Hot Water:
Originally Posted by Matt A:
Originally Posted by willygee:

  How do the 3600 and 700 hp engines couple when needed?

While I have no railroad experience, as an electrical engineer I can tell you its possible to synchronize the two generator outputs and run them in parallel.

They don't have to be "synchronized" since they produce DC anyway.

Good point. How many phases does the alternator have to be rectified?

Originally Posted by Hot Water:
Originally Posted by Matt A:
Originally Posted by willygee:

  How do the 3600 and 700 hp engines couple when needed?

While I have no railroad experience, as an electrical engineer I can tell you its possible to synchronize the two generator outputs and run them in parallel.

They don't have to be "synchronized" since they produce DC anyway.

My thought on this is that the 700HP unit is the basic "move the locomotive around, light loads, and keep the lights on" engine and the 3600HP unit is the "Git 'R Done" move the train unit. Similar to the "Genset" road switchers.

Originally Posted by Swafford:

Interesting................................ Someone forgot to tell the CSX paint shop about the NS buying the SD80MAC's!

http://www.railpictures.net/photo/499700

 

Regards,

Swafford

 

 

CSX SD80MAC

Yes, I saw that on the SD80MAC Facebook page this morning. My guess is that CSX is going to try and make them "look good" before they send them off to NS at the end of the lease. 

Also denying the future, but I still hope that one day one of these unique Conrail units might find it's way to a museum intact in order to represent Conrail's exploration into the very high horsepower arena.

NOt to mention that the customer was right on this model! The conrail choice of the V20 use in this monster outshined the EMD H engine and the sd90. any sd90's still running in tact?

 

Originally Posted by prrhorseshoecurve:
The conrail choice of the V20 use in this monster outshined the EMD H engine and the sd90. any sd90's still running in tact?

 

Nope. Last I heard Union Pacific (8500-8561) had scrapped their remaining SD90MAC-H in 2009 and Canadian Pacific (9300-9303) scrapped theirs in 2011, there are some still in Australia. The only ones left in America are the SD9043MAC's.

 

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