RailPro > RailPro Specific Help & Discussion

Problem with RailPro Loco

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nodcc4me:
Doug, did you try hooking the faulty locomotive to the tender on the other locomotive that is running well?

MtRR75:
AL,

Yeah, I thought about swapping the tenders.  But the problem loco has a 7-wire plug, while the smooth-running loco is an older model and has a 6-wire plug.

Doug

nodcc4me:
As a last ditch effort, you could probably order a pair of 6 pin plug and 7 pin socket harnesses or vice versa from BLI or another source for testing purposes. You would have to figure out which wires go where. Then you could make an adapter harness with a 6 pin plug on one end and a 7 pin socket on the other, or vice versa.

MtRR75:
THE PROBLEM IS FIXED!!!

In my previous post, I indicated why I thought that the problem was somehow related to the rotation of the drivers.  So took the loco apart and searched the driver pickups for something loose and conductive that should not be there.

I noticed that the under the drive axles (excluding the 3rd axle where the motor was attached) there were 6 tiny, vertical springs (just a bit larger than KaDee coupler springs). These springs give the axles some vertical bounce to help the wheels stay on the track.  However, one of the springs was missing.

I was not sure if the missing spring was causing my problem, but I figured that I would have to order replacement springs from BLI to find out.  So I started to reassemble the loco, when suddenly the missing spring fell out from behind a driver and into my hand!  I reinstalled the spring, reassembled the loco and put it on the track.  NO SHORTS!

This problem consumed most of my train time for the last month and a half.  Now, I can finally get back to working on scenery.

Thanks again for your suggestions.

Doug

nodcc4me:
What are the odds of that happening? Glad you tracked down the problem.

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