BN 9503 is one of 4 AC drive demonstrator locomotives built in 1991-92 for Burlington Northern RR to test an AC drive system in heavy haul service. These 4 locomotives were the ancestors of the th... (more)

Three BN test SD60MACs lead train 20 east through Rapids on the MRL. Interesting paint scheme.

One of four SD60MACs built ... coupled with a shiny new Union Pacific C41-8W. The SD60MACs were never ordered as anything but demonstrators, but they were successful in proving the AC motor desig... (more)

The three BN/EMD demonstrators and a test car are southbound on CR's River Line with a Susquehanna ALCO S2 in the background.