
Eric-B. I have not worn a motor out in them as yet but to be totally honest, I have hardly ever run my modern central drive diesels other then a brief test. But the little budget 0-4-0's are supposed to have motors which were said to only last 100 hours (The ones which were from China so had darkened wheels and 3 pole motors with the high top speed). They last a whole lot longer then 100 hours. From what one modeller experienced... He tested his and left it running and running where it did far more then that and kept going and going. Those little 0-4-0's can't half stand some abuse!
I am wondering that maybe, the premature motor failure could be something to do with the weight and torque needed to shift such a weight. Just a thought as the 0-4-0's are relatively light in comparisson and their motors are only slightly smaller in length. (The newer slower versions are said to use 5 pole motors though they look identical).