Posted by Dale Roth on July 22, 2017  What does the F125 stand for as in relationship to the F40s? The F40 was 3000 HP rated. So, what does the 125 stand for on the new engines? Posted by Alex Gillman on July 22, 2017  @ Dale Roth - the F125's reportedly total out at 4,700 horsepower with the "125" standing for the locomotive's top speed of 125 mph. Posted by Dale Roth on July 24, 2017  Thanks, Alex, for your kind reply. it always pays to ask.

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