by Patrick Boylan
walt wrote: The blowers operated continuously, but the actual heat was generated by the motors and the electrical resistance created when the motors were propelling the car. If there was no motion, there was no resistance, and thus no heat.Although I'm sure when the motors propell the car they must generate some heat my understanding is that the motors' dynamic braking made a lot more waste heat, and that was the primary source. My PCC's in Philly were always cold in the morning, hot in the evening. And as you mention the blowers operated continuously, winter or summer.