I copied the default values from the Wiki's kind engine and kind steam-engine into a new enginespec and tried it out in the JNR D6210 2-8-4 Berkshire,<kuid:438196:62010> loco. In Driver CAB mode the gauges started out as boil pressure 83 psi and water was 100%. Set the cutoff to 75% and opened the regulator wide open. The BP dropped to 2 psi and max speed was 8 mph. Coal was 100%. So much for the default values.
Bob Weber
Bob Weber