Trains.com

Subscriber & Member Login

Login, or register today to interact in our online community, comment on articles, receive our newsletter, manage your account online and more!

Bachmann Spectrum 4-4-0 w/DCC & Sound - Odd Throttle Behavior

5075 views
34 replies
1 rating 2 rating 3 rating 4 rating 5 rating
  • Member since
    February 2002
  • From: Reading, PA
  • 30,002 posts
Posted by rrinker on Tuesday, December 11, 2018 7:21 PM

 Is there a system reset you can do? Could be something messed up in the command station that is causing this. 

 Speed tables or CV2 wouldn't do this - the first speed table entry, or also CV2, are for the speed in step 1, not step 0. So if for example you set CV2 to a really high value, the locow ould stop at step 0 and as soon as you turned it to step 1 it would take off liek a rocket.

                                      --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
    February 2002
  • From: Mpls/St.Paul
  • 13,892 posts
Posted by wjstix on Tuesday, December 11, 2018 4:39 PM

If your system has a direct (not radio-wireless) option, does it do it with that also? Radio control systems can sometimes not pick up everything they should.

Only other thing I can think of is are you using a long or short address? Just thinking if say you've changed the long address, but the short address is still 03, it might be at some point it's picking up a command under 03 to keep moving. Or if you've ever had an engine with the same ID number where it might be picking up an old command?

Stix
  • Member since
    July 2006
  • 39 posts
Posted by akriggm on Tuesday, December 11, 2018 3:06 PM

Gentlemen,

I've reset the decoder to the factory defaults (CV#8 = 8) and the engine still continues to move when I throttle down to "0". I believe that negates the effects of any speed curves & CV#2, so I'm stumped.  Everything else on this engine works properly as do my other locos. Anything else to check/try?

Thanks,

akriggm 

  • Member since
    February 2002
  • From: Mpls/St.Paul
  • 13,892 posts
Posted by wjstix on Tuesday, December 11, 2018 12:50 PM

You'd have to look up in the instructions / website to find the right value to enter, but set the decoder to not use speed curves (probably CV29), and then try the engine again. Just a guess, but may be the engine is using a speed curve that somehow had speed step 0 assigned a value higher than 0.

Maybe try setting CV2 to 0 also and see if that does anything.

Stix
  • Member since
    January 2006
  • From: Northeast OH
  • 2,268 posts
Posted by NeO6874 on Monday, December 10, 2018 11:06 AM

Sounds like there's an off-by-one error somewhere. 

I'd take the easy way out, reset it to factory, and then reprogram.

-Dan

Builder of Bowser steam! Railimages Site

  • Member since
    July 2006
  • 39 posts
Bachmann Spectrum 4-4-0 w/DCC & Sound - Odd Throttle Behavior
Posted by akriggm on Saturday, December 8, 2018 12:16 PM

I just started my first operating session in a few weeks and the subject loco has begun exhibiting a new problem - when the loco is moving forward and the speed is reduced to "0" on the controller, it keeps moving at the same speed as at notch "1"; multiple presses of the speed "-" button have no effect. The only way to get it to stop is to use the emergency stop button on the controller.  This only happens moving forward as the loco exhibits normal stopping behavior in reverse.  All other throttle and sound functions operate normally (as do all my other locos).  I'm using an MRC Elite wireless DCC system and have not reprogrammed the Bachmann 4-4-0 since my previous operating session. Any idea what is going on and how I can correct this problem?

Thanks,

akriggm

Subscriber & Member Login

Login, or register today to interact in our online community, comment on articles, receive our newsletter, manage your account online and more!

Users Online

There are no community member online

Search the Community

ADVERTISEMENT
ADVERTISEMENT
ADVERTISEMENT
Model Railroader Newsletter See all
Sign up for our FREE e-newsletter and get model railroad news in your inbox!