As others have said here, Atlas 6999 uses a DC motor. So if you are using a AC power source a rectifier is required. I use the lionel TMCC System to run my trains and that includes an AMC motor controller. The controller allows you to select DC as a power output.
A couple observations if I may;
- leveling is fairly important especially for heavier engines and older engines that may not be working optimally. I used small pieces of cardboard to shim where needed. The card deck is a good suggestion
- be careful not to let any sawdust or foam pieces or other debris get underneath the table. I was having a bad time getting the turntable to turn all the way around. I was convinced it wasn’t level or that I had broken something. So I took it apart and found a substantial smount of crud had built up in the gear box. There’s grease on the gears to aid in smooth movement but it also creates a mess when particles of debris find their way inside.
- Warning. If you are going to take the top of the table off. There are three ball bearings in the center that st in small ‘cups’. When you remove the center screw and lift off the top the bearing fall out. Putting the top back on requires you to remove the bottom from thr table and reassemble it upside down. I learned this the hard way.
- you can take the gear box apart without having to take the top off. Carefully remove the screws from the motor assembly and the drive belt. The motor lifts out with one of the wires still attached to the frame but there is enough space to set it aside. The top of the gearbox then comes off by removing two screws. This is where I found my crud buildup. I cleaned, regreased, and reassembled the gears and motor ad now it purrs around like a kitten with or without engines.
I hope my observations help some of you enjoy your turntables.
