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Decoder Pro Speed Table & V-start

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  • Member since
    January 2014
  • From: Moneta, VA USA
  • 1,175 posts
Decoder Pro Speed Table & V-start
Posted by gdelmoro on Thursday, March 29, 2018 8:05 AM

I posted a similar question on the JMRI User’s group but I cant get a straight answer  OR  I can’t understand the answers.

I have a locomotive BLI Paragon 3 SD7 that runs too fast at speed step-1.

When I read the decoder V-Start is at 0 and if I choose Speed tables (and the correct CV29 setting) the #1 sLinder is all the way down.

Is there a way to get this loco to run slower at speed step 1? OR do I need to use it as my default loco and raise the other locomotives?

Gary

  • Member since
    January 2007
  • 283 posts
Posted by Lee 1234 on Thursday, March 29, 2018 8:54 AM

set cv3 and cv4 to zero.  These are acceleration.  BLI has PDF manuals on their website.  Make sure you are on the maximum speed steps.   Lowering Vmax and Vmid will also change the step voltage size.  

Lee

  • Member since
    January 2014
  • From: Moneta, VA USA
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Posted by gdelmoro on Thursday, March 29, 2018 10:29 AM

Ok so don’t use the speed table. Use Vmin-mid & max. CV 3 & 4 = 0 and try lowering V-Mid and Max.

Thanks.

Gary

  • Member since
    February 2002
  • From: Reading, PA
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Posted by rrinker on Thursday, March 29, 2018 5:44 PM

 If V-Start is already 0 and no speed tables are set - that's as slow as it goes.

You want locos to go slower - hit the 28/128 button and switch to 128 speed steps - EVERY loco they review in MR, when tested on 28, ALWAYS starts slower on 128. Minor annoyance with NCE, it always defaults to 28.

                                   --Randy


Modeling the Reading Railroad in the 1950's

 

Visit my web site at www.readingeastpenn.com for construction updates, DCC Info, and more.

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Posted by maxman on Thursday, March 29, 2018 7:59 PM

rrinker
If V-Start is already 0 and no speed tables are set - that's as slow as it goes.

If V-start equals zero, I would think that the engine would not move at all.

Moderator
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Posted by tstage on Thursday, March 29, 2018 9:25 PM

Nope.  I've had a few decoders that just wouldn't go slow enough - even when CV2 was set to zero.  Thats why I've standardized on TCS and ESU for my decoders - especially with my switchers.  It's worth the extra few bucks for the great motor control.

Tom

https://tstage9.wixsite.com/nyc-modeling

Time...It marches on...without ever turning around to see if anyone is even keeping in step.

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    May 2010
  • From: SE. WI.
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Posted by mbinsewi on Thursday, March 29, 2018 9:48 PM

I have an Atlas with the dual mode decoder, and I had the same problem,  it started fast enough, that I couldn't even do slow switching operations.

The Atlas help desk said to try a reset, I did, and all is good.

Mike.

 

 

  • Member since
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  • From: Reading, PA
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Posted by rrinker on Friday, March 30, 2018 7:03 AM

maxman

 

 
rrinker
If V-Start is already 0 and no speed tables are set - that's as slow as it goes.

 

If V-start equals zero, I would think that the engine would not move at all.

 

V-Start is generally additive. 0 seldom means no power, it means no extra. There are a few that if you set it to 0 always make it 1.

                              --Randy

 


Modeling the Reading Railroad in the 1950's

 

Visit my web site at www.readingeastpenn.com for construction updates, DCC Info, and more.

  • Member since
    January 2014
  • From: Moneta, VA USA
  • 1,175 posts
Posted by gdelmoro on Friday, March 30, 2018 8:00 AM

thanks Randy.

I guess these two locomotives won’t be in a consist together.  I can get the mid and high speeds matched but not the start (step 1 - 5).

Gary

  • Member since
    March 2010
  • From: Sherwood Park, Alberta, Canada
  • 251 posts
Posted by CNR378 on Friday, March 30, 2018 9:01 AM

I'm surprised your BLI Paragon doesn't run slower.

Before you give up, have you tried resetting the decoder and then testing the start speed?

Peter

  • Member since
    February 2002
  • From: Reading, PA
  • 30,002 posts
Posted by rrinker on Friday, March 30, 2018 1:36 PM

 I'm saying - try 128 speed steps, guarantee it will run slower on step 1.

Definitely do a reset, in case something else got messed up, but 128 seems to always do better than 28, sort of makes sense, the speed range from 0-max is the same, if broken into 128 (it's actually a few less) means each increment is that much smaller than if the same range is broken into 28 steps.

There's nothing to change in the loco - 28/128 setting is the same on the decoder, it's what the command station sends that determisn which is used.

                                  --Randy


Modeling the Reading Railroad in the 1950's

 

Visit my web site at www.readingeastpenn.com for construction updates, DCC Info, and more.

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