Okay, that’s what I thought initially. So then my original reply still holds. The other question though… did you order straight or curved or both, and how much?
9V requires a closed loop to run, so you’re talking a minimum of 16 pieces of curved, that’s a lot of removing of metal rails and installing them in the new track. Also, if you got straight, it’s been more than a year since I ordered any, but the last time I did, 9V straight track starts at $4 a piece used (new is practically non-existent) and is hard to get in quantity.
RC trains are backwards compatible – that is, they’ll run just fine on 9V track cause the geometry is the same, it’s just plastic rails instead of metal. But even then, if you don’t have a complete loop, I’m not sure how the train is going to run without you standing there operating it, there’s no way to make an RC train instantly reverse the way the space monorails do.
If you end up running your train on 9V, you’re also gonna need a controller, a DC adapter, and the wire that connects the controller to the train rails. If you’re running your train on batteries, I recommend the PF rechargeable unit, and you’ll need more than one, so one can charge while the other is running and then is ready to be swapped in when the first one runs out of juice during public hours.