Hope this doesn’t go too off topic
Since the topic of Steam PTC has been brought up is there a list of requirements for steam locomotives. It might’ve been wishful thinking but I figured steam locomotives were going to get a pass on PTC.
Absolutely NOT! Neither the FRA nor the railroads would allow that.
I would be very interested to learn how PTC is being implemented into steam locomotives. I understand PTC is a very complex and expensive system to install. I know it can give the engineer penalties for not obeying track speed limits but in the extreme scenario where the PTC system dumps the air, puts the train into emergency and shuts the throttle down.
The FRA eliminated the requirement to "shut the throttle down" on steam locomotives, after a number of meetings with some of the "big steam" operators. Once the FRA folks understood that closing the throttle on a moving steam locomotive eliminates all lubrication to the valves and cylinders, they subsequently back off that feature in PTC.
I find it very difficult to even think of a way to allow it to do that to a extremely expensive steam locomotive. That is what currently has be scratching my head.
I know 4014’s implementation of PTC is very minimal from what I see. The locomotive basically has a screen that duplicates the screen in the diesel following behind. This so far makes since, the PTC screen has a lot of useful information that it can display for the engineer. And all the brains of the operation are kept back in the diesel as they take up a lot of room are very expensive and I doubt they’d fair well in the cab of a steam locomotive.
Well, time will tell, as the next step is to have all the PTC equipment, including the antennas, mounted completely on the 4014, and/or any other steam locomotives.
maybe I misunderstood something but I hope to see everyone else’s thoughts on this.