RailPro > RailPro Specific Help & Discussion

How To Set Up Chuff Synchronisation

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ron045:

--- Quote from: gregeusa on May 05, 2022, 12:27:36 PM ---OK, really confused now.

That sure looks like an MTH setup, so are you running DCS Protosound III and then using feeding from the railpro to the DCS hardware, or did you drive the motor directly?

The question was about chuff synchronization, and using the chuff input on the railpro board, but it does not appear you could be doing that, since MTH hardware uses the tach strip to synchronize chuffs.

Can you explain your setup please?

Greg

--- End quote ---

The PS stuff was ripped out.  I did leave in the tac reader which has three wires.  + -
And signal.  The signal wire goes to the purple wire

gregeusa:
Thanks Bill, it was alluded to, but no details. Interesting that the chuff is tied to plus 5 volts, as most chuff triggers in locos that are mechanical are tied to ground.

Famous mistake in G scale by the first Bachmann K-27, since remedied. Can invert the signal with a transistor easily.

Ron, you might try printing a different tach strip, and get closer synchronization.

Greg

GKnowles:
I had received the same instructions from RP when I contacted them yesterday. Setting up a cam on the driver axle that feeds the purple lead should be straight forward. My key question is regarding the HC set up. As RP suggested, I updated the S/W versions on the HC-2b ( my came pre installed with 2.28 yet the RP web site lists 2.26 as the latest so I left the 2.28 installed) and the LM-4S-G was upgraded to 1.03. I then went back to re set up the HC buttons for the steam sound (light steam ULC) but never encountered the configuration option to set up the chuff on leading, trailing or leading and trailing inputs. Has any one set up their chuffs with these settings? If so, can you walk me through the steps one by one?

G8B4Life:
It's there, once you've set the sound and used the steam loco icon for that (you must use the steam loco icon), pressing the next page button a few times will get you to the advanced sound setup page.



The page will initially not have the chuff sync enabled so enable it and then you can change the trigger to open, closed or both.

- Tim

GKnowles:
Thanks Tim, it's right here as you identified, I never thought to scroll through further! Now all I need to do now is fabricate a cam mechanism.

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