Reply to "Motors in new MTH locos vs Motors in older MTH locos"

James IngramOGR Forum Member DIGITAL SUBSCRIBER

Jerky Diesels:

Two Smooth Older Diesels, Two Jerky Newer Diesels

I have 4 MTH Proto-3 diesels -- that I run very SLOWLY on an 8 ft-long automated, point-to-point ,public display.
I've only set this display up about 4 times at 1-day train shows, so these engines don't have many running hours on them.
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They sit and idle until somebody comes along and pushes the "start" button.
Then they make a single back-and-forth cycle, and then stop and wait, until somebody pushes the button again (VIDEO) .

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The 2 NEWER diesels (White Soo GP40 & Yellow UP 44-tonner; in the right side of the photo) I have observed, after running a while, mysteriously start running somewhat jerky -- especially when they start and stop.
Occassionally, they won't even start up, unless I give them a nudge.
The 2 OLDER diesels (green IT SW-1500 & yellow ACY S2; in the left side of the photo) so far, have not exhibited this behavior.

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I have cleaned track and cleaned engine wheels, and I still get the jerking in the 2 newer diesels after they have been running a while (remember, they're mostly IDLING, only starting-up when someone pushes the button).
Now I'm wondering if I'm observing the same problem, that others have been describing in this thread ??

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12/14/221:14 AM

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