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No acceleration

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  • Member since
    October, 2007
  • 65 posts
No acceleration
Posted by RayG8 on Saturday, March 18, 2017 4:16 PM

I have an Atlas MP15 that wont accelerate, all other functions appear to be any idearfunctioning normally and no other locos have this issue.I am using an MRC Prodigy Advance2 system.

Any ideas on the cause will be greatly appreciated.

  • Member since
    February, 2008
  • 5,789 posts
Posted by maxman on Saturday, March 18, 2017 5:28 PM

Eventually someone will ask you what decoder is in that particular engine, and if the engine is HO or N.

  • Member since
    February, 2005
  • From: Vancouver Island, BC
  • 20,899 posts
Posted by selector on Saturday, March 18, 2017 7:38 PM

If you have performed a reset and can't get it to move on Add "03", then the decoder is toast.

What decod....er....never mind......Confused

  • Member since
    December, 2004
  • From: Bedford, MA, USA
  • 17,355 posts
Posted by MisterBeasley on Saturday, March 18, 2017 9:14 PM

Will it accelerate in reverse?

It takes an iron man to play with a toy iron horse. 

  • Member since
    April, 2002
  • From: Dartford, Kent, England
  • 79 posts
Posted by jdobo on Sunday, March 19, 2017 5:40 AM

If it has one of the later QSI Quantam decoders it may have the regulated throttle enabled. Try setting it to regular throttle by setting CV 49 to 4 and CV 56 to 0.

Regards Jon

  • Member since
    September, 2004
  • From: Dearborn Station
  • 16,580 posts
Posted by richhotrain on Sunday, March 19, 2017 6:16 AM

RayG8

I have an Atlas MP15 that wont accelerate..... 

Define "acceleration".

Do you mean that it won't respond to commands to move or that CV3 values have no effect?

Rich

Alton Junction

  • Member since
    October, 2007
  • 65 posts
Posted by RayG8 on Sunday, March 19, 2017 8:25 AM

HO. Pary of the problem is that I don't know what kind of decoder no information came with the engine. A source for what manufacturer used what decoder(s) and when would be helpful.

  • Member since
    October, 2007
  • 65 posts
Posted by RayG8 on Sunday, March 19, 2017 8:27 AM

No. It moces at a very slow speed it either direction.

  • Member since
    October, 2007
  • 65 posts
Posted by RayG8 on Sunday, March 19, 2017 8:28 AM

It responds to speed commands and the headlights work properly.

  • Member since
    February, 2013
  • 110 posts
Posted by trainmaster247 on Sunday, March 19, 2017 8:33 AM

sounds like it could be a speed table things, as to decoder i am sure someone could identify it from a photo.

  • Member since
    September, 2004
  • From: Dearborn Station
  • 16,580 posts
Posted by richhotrain on Sunday, March 19, 2017 8:50 AM

RayG8

HO. Pary of the problem is that I don't know what kind of decoder no information came with the engine. A source for what manufacturer used what decoder(s) and when would be helpful.

 

Can you read the Manufacturer ID and Version No. of the decoder on the programming track?

Rich

Alton Junction

  • Member since
    December, 2004
  • From: Bedford, MA, USA
  • 17,355 posts
Posted by MisterBeasley on Sunday, March 19, 2017 11:02 AM

Has this engine ever worked properly?  Where did you get it?  Have you given the motor and gear train a cleaning and lubrication?  Does it sound like the motor is spinning rapidly but the engine barely moves?

At this point, do a factory reset.

It takes an iron man to play with a toy iron horse. 

  • Member since
    July, 2006
  • From: Southern Quebec, Canada
  • 826 posts
Posted by Guy Papillon on Sunday, March 19, 2017 2:37 PM

RayG8

No. It moces at a very slow speed it either direction.

Some time ago I went to visit a fellow modeler and I ran some of his locos. He ran his locos on 128 speed steps and I am used to 28 speed steps on my own layout. I found his locos so sloooooow to "accelerate".

Speed steps are set on the throttle, not on the loco decoder. So maybe what I wrote won't help. But there are so many questions that are not answered: Do you have other locos that run OK on this throttle? Is it your first loco? Is it new or second hand? Do you usually program your decoders for 28/128 speed steps or on 14 speed steps? What is your meaning of "accelerate"? Etc.

If you give more details, there is certainly a forum member that could help. There is a bunch of DCC expert here.

 

Guy

Modeling CNR in the 50's

  • Member since
    October, 2007
  • 65 posts
Posted by RayG8 on Sunday, March 19, 2017 4:25 PM

Got it fixed. The Atlas web site has a list of DCC equiped locos with the decoder info for them. Set it back to factory settings and all is well. Thanks to all who responded.

 

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