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Amtrak puts out RFP for new and rebuilt locomotives.

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[quote user="Shadow the Cats owner"]Look at the CAT C280 already certifed for Tier4 emissions it is their primary Very Large Mine truck engine so they know it is reliable.[/quote] I think that is a non-road, not a locomotive Tier 4 certification. Locomotive NOx, HC, and CO emissions limits are about half of non-road. Not to say it can't be done, but it is quite some work do. [quote user="Shadow the Cats owner"]15 feet long just over 11 feet tall and under 7 feet wide. It should fit into a Full width carbody.[/quote] I would not bet. Taking the F125's C175 as comparison, the C280 is with 11'-2'' about 3 ft higher and with 6'-8'' approx. 8 inch wider. I don't know if 1'-6'' walkways are sufficient. Thereare five companies asking questions. I'm quite sure that are EMD, Siemens, Bombardier, MPI/GE, and a 5th I can't name. The first three have a base they can work on: F125, SC44 Charger, ALP-45DP. If the switch back to a slow running diesel they would start from scrap, very unlikely. MPI/GE has the GE Gevo Tier 4. So only the unknown questioner remains. The PRIIA 305-005 specification allowed 2-axle and 3-axle trucks. MPI/Ge already announced n discoussions that they would need 3-axle trucks on dual power engines. Regards, Volker
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