Hello friends. I am new to this forum. Purchased a vintage Mantua 2-8-2 steam engine. I was wondering if there is a way to test this motor if it is out of the chassis? If the motor tests bad can I find a replacement? If not I suppose I could just reassemble and use the engine in static display. All pieces of the main drive wheels and other parts complete and function well. Sold my HO collection about 12 years ago to get into rc aviation but have had the urge to start collecting trains again. Any information is appreciated! Donald.
I've just read through this thread. I'm glad you got that motor running.
For your general information, and future reference, the round drum at center left in your first photo is called a "commutator." (From the left, the white plastic worm gear, a tiny bit of the silver drive shaft, the motor frame, and then a brass arm coming down and rubbing against, the commutator.) The outside of the commutator plates are black in the photo. They are supposed to be an orange copper color, since the plates are copper. The black is a buildup of carbon from sparks between the two carbon brushes that ride on the plates, and the plates themselves. The next time you do any cleaning on the inside of this loco, clean those copper plates with a pencil eraser. They should be a shiny copper color, not black. A buildup of enough carbon on those plates can cause the motor not to run. If you look at the motor again, now that you have run it, I doubt that the commutator plates are as black. There is probably some copper showing through.
Traction Fan :smilie_daumenpos: