Cjcrescent
Master Mechanic
...I've since acquired a few more DCC/sound-equipped units, but the cost of converting 50-odd DC units, as well as the time it would take to convert, makes complete conversion impracticable. ...
Actually, its not impractical, as I am doing the same thing. You don't convert all at once and they don't all have to be sound units. About every other month, I pick up a decoder, and set it aside to go into one of my 50 yo steamers. So far, I've converted 25 of my own and have 15 left to do. I'm in no hurry but I do have almost enough decoders to finish the job.
Also I have 3 steamers that have the Cannon coreless motors in them, and in the almost 20 years I've been doing DCC, have never had a problem with overheating of coreless motors.