David Benton wrote:Wait a sec, the specification is to reach 125 mph with a single loco, or with a loco at each end of the train???
There are 3 performance specifications in section 9.2 of the locomotive spec: 1 locomotive + 3 cars + 1 cab (680,000 lb load); 1 locomotive + 4 cars + 1 cab (850,000 lbs); and then what EMD is basing its protest on: 2 locomotives + 8 cars.
In Attachment EE, Appendix G Service and Performance Simulations, a specific sequence is provided of station stops, dwell times at the RRT Loop at the test facility in Pueblo, CO for the offeror to provide their simulation results for trip times, speeds, acceleration and fuel consumption for the 3 configurations. I presume that the winner of the contract will then have to demonstrate they can meet those trip times and speeds at the test facility during the testing phase.