Author Topic: Atlas GP7 with keep-alives  (Read 728 times)


  • Conductor
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Atlas GP7 with keep-alives
« on: April 27, 2020, 02:14:33 PM »
Hello all. This is an upgrade of my previous install. I installed keep-alives in two RailPro locos, the difference in performance is startling. Like having the convenience of a battery without the inconvenience of a battery. I used TCS KA4s, which are about the size of a sugar cube and wire directly into the RailPro module without a bridge rectifier. Here's a photo of the Atlas GP7 install, I located the KA4 with double-side tape on a styrene strip under the cab.I had to bend brass wire conductors for the headlight around the keep-alive as it was the easiest way to correctly position the LED behind the headlight lens. Amazing how the loco crawls through my unpowered Atlas C100 and 83 frogs, and -- bonus! -- because RailPro modules "talk" to each other the non-KA locos run better in MU configuration!

« Last Edit: April 27, 2020, 02:16:29 PM by ON28 »


  • Conductor
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    • LK&O Railroad
Re: Atlas GP7 with keep-alives
« Reply #1 on: April 27, 2020, 05:57:08 PM »
Nice install.

LK&O Railroad website

When I was a kid... no wait, I still do that. HO, 28x32, double deck, 1969, RailPro