Bachmann 4-4-0 Centennial Spectrum Battery Conversion - > Community > Forums

LinkBack Thread Tools
Old 06-08-2009, 11:25 AM   #1 (permalink)
Junior Member
Join Date: Jun 2009
Posts: 2
Default Bachmann 4-4-0 Centennial Spectrum Battery Conversion

I am trying to convert an older 4-4-0 Spectrum Centennial engine to battery power. The only thing that came factory ready is a sound install. I have requested wiring diagrams from Bachmann and received an email this morning from them saying they are looking to see if they have them. I was curious if anyone has done this conversion and how you did it. The circuit boards are not easy to get to and trying to trace down the wires is a little difficult without wiring info. Thanks in advance for your replies.
efagyal is offline   Reply With Quote Quick reply to this message
Sponsored Links
Old 06-08-2009, 02:42 PM   #2 (permalink)
Super Moderator
East Broad Top's Avatar
Join Date: Dec 2007
Location: Centennial, CO
Posts: 4,957
Default RE: Bachmann 4-4-0 Centennial Spectrum Battery Conversion

Quite frankly, the easiest thing to do in this case is to gut the existing electronics and start fresh. You don't need the wires coming from the rails, so those can be nuked. You needn't worry about the polarity switch, either. You can wire the smoke unit separately if you want to; many people who run battery power don't bother with smoke since it unnecessarily saps battery life. The lights you'll want to wire direct to the R/C control either for directional lighting or simply as a way to see visually that the power's on. The firebox boards are probably the only bit of the origial circuitry that you'd probably end up using, and they can be wired directly into the main power as well. The only thing you'll want to see is if the boards with the LEDs have resistors on them, or if they're on the main board.

If I recall, there are 6 wires running between the loco and the tender; two for the chuff contact (one 2-wire plug) and the 4-wire plug with power from the tender to the locomotive, and power from the control board to the back-up light (if so equipped). The wires to the motor go directly to the control board, so you'll redirect those for the R/C install. What I would do would be to keep the chuff contacts the same, and repurpose the 4-wire plug to carry voltage to the motor and power forward to the control board or to the headlights and firebox lights. I don't mind the headlight being on all the time, and since the 4-4-0 comes with an oil or kerosene lamp, it wouldn't have been turned on and off easily, anyway. Power to the rear light would likely be directional, and run off the R/C board in the tender.


East Broad Top is offline   Reply With Quote Quick reply to this message
Old 06-08-2009, 03:25 PM   #3 (permalink)
Senior Member
Paul Norton's Avatar
Join Date: Jan 2008
Location: Ottawa, Ontario, Canada
Posts: 467
Default RE: Bachmann 4-4-0 Centennial Spectrum Battery Conversion

There is an article on our club web site about adding an MU plug to a Bachmann 4-4-0. If nothing else it will show you how to isolate the track power pick-ups. Click on the link to view it.

Paul Norton
Ottawa Valley GRS
Paul Norton is offline   Reply With Quote Quick reply to this message
Old 06-08-2009, 08:09 PM   #4 (permalink)
Junior Member
Join Date: Jun 2009
Posts: 2
Default RE: Bachmann 4-4-0 Centennial Spectrum Battery Conversion

Excellent information from both of you. Thanks for the insite. This will help a lot.
efagyal is offline   Reply With Quote Quick reply to this message

Quick Reply

Register Now

In order to be able to post messages on the > Community > Forums forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.
User Name:
Please enter a password for your user account. Note that passwords are case-sensitive.
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:


Thread Tools

Posting Rules
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

Similar Threads
Thread Thread Starter Forum Replies Last Post
Bachmann Railtruck conversion to Airwire, Zimo decoder and battery power Beddhist RC/Battery Operations 7 02-25-2014 06:32 AM
Bachmann "Centennial" Mogul gearbox disassembly? Tom Lapointe Rolling Stock 4 05-09-2013 06:26 PM
Bachmann 55 Ton Shay RC Battery Conversion rhyman RC/Battery Operations 3 03-23-2013 08:04 PM
Plugs for Battery Conversion trainman707 RC/Battery Operations 7 12-30-2011 07:22 PM
Battery conversion cfodk Beginner's Forum 21 06-15-2011 03:48 AM

Powered by vBadvanced CMPS v3.2.3

All times are GMT -4. The time now is 06:25 AM.

Powered by vBulletin® Copyright ©2000 - 2020, Jelsoft Enterprises Ltd.
Content Relevant URLs by vBSEO 3.6.1
vBulletin Security provided by vBSecurity v2.2.2 (Pro) - vBulletin Mods & Addons Copyright © 2020 DragonByte Technologies Ltd.