My slip ring had a sticker on it that said "2 amps" but didn't say anything about at what voltage. I got it off ebay from someone catering to the home windmill power generation folks, whatever voltage windmills put out. If it doesn't work I have a bit of room to replace it with something bigger.
Latest progress is the swing circle. All that's left on it is to get the shaper running and cut gear teeth.
I was very happy with how everything bolted together. The swing circle locates the slip ring mount and both bolt to the carbody and it worked! Rotary tables are neat.
I decided to get started on track rollers. Had time for two tonight.