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Discussion Boards => HO => Topic started by: Pushrod on February 19, 2011, 03:27:40 PM

Title: How do I open up the coal tender to install DCC sound
Post by: Pushrod on February 19, 2011, 03:27:40 PM
I have a Bachmann HO Baldwin 2-8-0 consolidated engine and tender (Western Maryland #766) and am trying to install an MRC steam sound decoder in it. I can't figure out how to open the tender to install it. I've released the two tabs under the chassis in the rear, but there is something else holding the body on inside that I can't find. I even pulled out the coal load to look. Can anyone with this engine who has disasembled their tender before help me out? Thanks in advance.
-P
Title: Re: How do I open up the coal tender to install DCC sound
Post by: r0bert on February 19, 2011, 05:38:48 PM
there is a screw in the bottom near the front truck
http://www.bachmanntrains.com/home-usa/dwg/dwgs/H114X-IS001.PDF (http://www.bachmanntrains.com/home-usa/dwg/dwgs/H114X-IS001.PDF)
Title: Re: How do I open up the coal tender to install DCC sound
Post by: Pacific Northern on February 19, 2011, 05:51:18 PM
You may or may not have erratic running behaviour once you install the decoder. You should cut the capacitors on the Bachmann circuit board.
Title: Re: How do I open up the coal tender to install DCC sound
Post by: Pushrod on February 19, 2011, 07:07:05 PM
Quote from: r0bert on February 19, 2011, 05:38:48 PM
there is a screw in the bottom near the front truck
http://www.bachmanntrains.com/home-usa/dwg/dwgs/H114X-IS001.PDF (http://www.bachmanntrains.com/home-usa/dwg/dwgs/H114X-IS001.PDF)

Thank r0bert, that was it. You rock! Don't know how I missed that on the diagram!
Title: Re: How do I open up the coal tender to install DCC sound
Post by: Pushrod on February 19, 2011, 07:13:40 PM
Quote from: Pacific Northern on February 19, 2011, 05:51:18 PM
You may or may not have erratic running behaviour once you install the decoder. You should cut the capacitors on the Bachmann circuit board.

Pacific Northern, are they the four black box-like units hard soldered on the board or the heat shrinked unit wired into the board.
Also, which of the 6 wires coming into the tender are the voltage pickups from the engines wheels?

It looks like my diagram is different then that r0bert linked to, mine didn't show the chassis removal screw.
Title: Re: How do I open up the coal tender to install DCC sound
Post by: Pacific Northern on February 19, 2011, 11:52:43 PM
You will find this to be informative.

http://www.bachmanntrains.com/home-usa/board/index.php/topic,189.0.html

Note, the capacitors are marked C1 and C2,
Title: Re: How do I open up the coal tender to install DCC sound
Post by: Pushrod on February 20, 2011, 08:42:13 AM
Quote from: Pacific Northern on February 19, 2011, 11:52:43 PM
You will find this to be informative.

http://www.bachmanntrains.com/home-usa/board/index.php/topic,189.0.html

Note, the capacitors are marked C1 and C2,

Yep, my board is different, it is a micro-circuit board.
Title: Re: How do I open up the coal tender to install DCC sound
Post by: Pushrod on February 20, 2011, 11:49:43 AM
Got the sound dcc decoder soldered in and the tender back together. Hooked it up to the engine and back on the track and it worked perfectly. Thanks for everyones help.
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