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June 30, 2022, 01:06:23 AM
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Author Topic: Climax to Railpro conversion  (Read 672 times)
akkloes

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« on: April 16, 2022, 08:01:10 AM »

I am wanting to convert a 20.3 Climax engine to battery powered Railpro.
Does Bachmann have a conversion guidance document?  I search the forum but did not find any postings.

I bought a Railpro RPO LM-4S-G locomotive module as the control module.
When I dropped the ashpan, I found I was looking at a Bachmann G811x-PCB02 board and came to a complete stop.  I assume I need some/all of the resistors on this board, so I didn't start cutting wires.  There is also a second PCB in the bunker which is for a soundboard, which is not currently in use.

I need some guidance on how to proceed so I don't cause damage or make it more difficult than it needs to be.
Experience level is moderate, but I'm not good at reading PCBs.
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mickeykelley

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« Reply #1 on: April 16, 2022, 09:13:37 AM »

Is it the first or second release of the climax?  It will make a difference. I sold my first gen Climax and bought the second years ago for this very reason.  The second gen has a socket under the bunker so wiring is much simpler.  Good chance battery will need to go in the boiler, if I were to guess as space is tight in these.  Other more expert people will chime in.
« Last Edit: April 16, 2022, 09:15:26 AM by mickeykelley » Logged
akkloes

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« Reply #2 on: April 16, 2022, 08:19:49 PM »

Thanks for the response.
I bought the Climax used, so I'm not sure of the age.  Was shelved as a 2nd Climax, runs great.
This is the PCB that is in the bunker...see link. I'm assuming for a sound board.
The battery will go in a trailing car...probably disguised as a coal load.


https://app.box.com/s/raw4f71wukm007pagx99l7wk4o82bfe4
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mickeykelley

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« Reply #3 on: April 16, 2022, 09:56:46 PM »

If that as all that was in the bunker, probably 1st gen.

https://www.bachmanntrains.com/home-usa/board/index.php?topic=37518.0

And look here

http://www.girr.org/girr/tips/tips5/climax_tips.html
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akkloes

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« Reply #4 on: April 17, 2022, 08:51:30 PM »

Thanks...very helpful.  Moves me a step or two closer!
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akkloes

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« Reply #5 on: April 23, 2022, 07:52:25 AM »

Appreciate all the input...I've changed my initial thoughts.
I think I'm going to just go for direct wiring of the trucks and use the circuit board for flicker & lights.
Railpro will give me movement control and the sounds, including the chuff.
Battery will be a trailing car so I can switch it out, speaker in the tender.

I can always "attack" the circuit board if I'm not happy with the results.

Am I overlooking anything ?
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