Hello,
With my new brass Mogul coupled to its consist, it requires just 3.5 volts on the track to get the train moving, but my GP-60 needs 7 volts to move out.
This reminds me of the complaints from the old Steam hoggers when they had to transition to Diesel:
"You have to wait 'till the Diesel builds up the RPM to get enough drawbar pull to get moving, but with the Steamers, I just shoved the Johnson Bar forward, yanked out the Throttle, and the power was at the drivers rat now, no waiting!"
Yep, with 250-300 PSI in the boiler, operating through the full piston stroke, you could spin the drivers with no trouble!
Bad Order Hal, who grew up during the last 15 years of Steam.