Anyone had success installing a decoder in the new Atlas GP-7's? If so, what did you use? How'd it go?
They are not not DCC compatible. Unless you know how to mill it. Short of being a mill wright, I wouldn't attempt it!
I installed a Digitrax decoder in an Atlas GP-9, which I suspect is using the same frame as the GP-7. It had the same problem, it wasn't one of the new plug-n-play type frames. First, I bought a replacement frame from Southern Digital. I managed to break the replacement (it's fragile around the motor mounts), and they were very kind enough to send me a replacement at not cost, but I broke it too. So, I just took a Dremel tool to the original frame to make room for the decoder. Now, don't get me wrong, I had no trouble at all with the Southern Digital RS-11 replacement frames. It's just a combination of the replacement frame material, design of the frame, and a little impatience of the user... There are other replacement frame manufacturers out there I'm sure, if you don't feel comfortable altering the frame yourself. One thing to remember, though, you will lose the original light mount on the rear of the frame if you install a decoder (that's where the decoder goes), so you'll have to use a small LED, or light bulb if you want the rear headlight.
Pete try Aztec MFG. They offer milled frames for almost any N scale locos. I had them mill 32 locos...... Ask for John. You should find the address and URL in Model Railroader.
