Let's assume you have a Power On Board (POB) loco that has batteries and is completely isolated -- it doesn't trickle charge and it doesn't need any rail power ever. It's the future and it does wireless charging of the battery.

Let's also assume you have decided like I have that power on the rails is the most realistic way to do signaling. With resistance wheelsets on your rolling stock, even one car left sitting in a siding somewhere will trigger the signals just like the prototype.

Bruce Petrarca has an article in October 2017 MRH regarding "RailPro makes things easy". Also Bruce wrote an article past August 2017 in MRH regarding capacitors i.e. keepalive type systems.

Question? Will the same capacitor system (Keep-alive, Current keeper etc) he details in August issue work just the same in a straignt DC powered layout and/or with the RailPro power supply.

Will capacitors (Keep-Alive etc.) be needed with RailPro?

We have discussed re-motoring Blue Box locos with Kato motors, but has anyone had occasion to perform a motor transplant on a Walthers P2K E unit (original Life Like design)? My A-B-A bodies were custom painted and significant details were added but they  will not transplant into the superior new production E frames with their improved motor and trucks. So, I am thinking a new Kato motor. 

I ran across this today: 

http://www.on30guy.com/2017/10/23/tam-valley-depot-drops-dead-rail/

I have no real interest in dead rail, I don't feel that battery technology is any where near where it needs to be for this to work reliably. Seems it just wasn't catching on.

GregW66