RailPro > RailPro Specific Help & Discussion

Engines speed slowing down

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SWA737:
 I’ve had something that has recently started happening to several of my Bachman Diesel engines.  7 of them after running for about 10 minutes have started slowing down until they completely stall but the sound continues to operate normally.  After about a 15 minute shut down, they  start running again perfectly for about another 10 minutes then begin shutting down again.  I have 42 converted engines over to railpro decoders. Some are LM-2S’s and some are LM-3S’s.  All are up-to-date with the latest updates.  I have not run any others to see if more of them are doing that. Has anyone had an issue like this? Possibly decoders overheating?  The caution indicator for low-voltage is coming on up to a couple of minutes prior to this occurring. The track is clean and the wheels also. I do have TCS keep a lives in all of my engines.  The engines are about eight years old of which the past four years have been Railpro decoded.

Alan:
Sounds like the motors are getting hot and the layout wiring is not sufficiently robust enough to cause the LM to over-current shut down.

nodcc4me:
If seven engines are doing the same thing, they will all most likely do it. In the event that any permanent damage is occurring I would pick one engine and use it for testing purposes until you figure out what the problem is.


You stated this started recently, so something must have changed. Did you make any wiring changes or additions right before this started? If the modules are overheating you should be able to see that by touching the Info button. If the motors are overheating to the point of shut down the locomotive should feel pretty warm to the touch.

SWA737:
 Nothing at all has changed on the wiring. I have a 12 gauge wire buss going around the layout  with drops every 6 feet and four power units separating the four districts from Railpro.  These engines are the less expensive Bachman sound value engines that are several years old now. Could be overheating motors perhaps.

nodcc4me:
I don’t think the age of the engines is causing the problem. I am running some very old Athearn, Rivarossi and Bachmann engines, but have not had that problem. Did yours start doing this right after you installed the RP modules or were they running OK? What about your newer engines?

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