The technical data states that they are 5'3" gauge.
Ira
The SD80ACe's were sold to Vale do Rio Doce, the Brazilian mining concern. Are they being assigned to EF Carajas (5'3" gauge) or EF Vitoria a Minas (meter gauge)?
Its tier 1 for two reasons: a. its going to Australia and B. With judicious tuning they can maximize the fuel efficiency if they don't have to worry about the NOx emissions. Thermodynamic efficiency is determined between the maximum cycle temperature and the minimum. To reduce NOx everybody has to reduce the maximum temperature by several different methods. If you remember that an EMD engine is 20 or 16 one cylinder engine connected by a common crankshaft mounted in a suitable frame. The only problem might be tweaking the turbocharger. So for domestic use the V20 710 is or will be tier 3.
Yes it’s true, EMD is building SD80ACes, though the current batch is for export only. I wonder what the SD80ACe's hp rating is since the SD80MAC was 5,000hp.
And I heard on another forum that these SD80ACes are only tier-1 compliant, which if true means EMD would have to do modifications to make a tier-3 SD80ACe. IMO, I doubt any north American class 1s would buy the 20-710 SD80ACe since they're content with 16 cylinder EMD and 12 cylinder GEs and are acquiring more of them, even though both NS and CSX roster a handful of SD80MACs.
http://www.railpictures.net/viewphoto.php?id=384479&nseq=1
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