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61
RailPro Specific Help & Discussion / Re: Installing into a push-pull trainset
« Last post by G8B4Life on October 23, 2025, 06:45:49 AM »
Philosophy does not equal reality. There are a multitude of examples of trains around the world that are pushed by the locomotive in one direction of the journey. Of course, we are talking passenger trains, like the OP post is about. If I looked into it deeper I'm sure I be saying 100% of the models of trainsets here that have a locomotive at both ends have a powered model at one end only, the locomotive at the other end is a dummy.
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RailPro Specific Help & Discussion / Re: Installing into a push-pull trainset
« Last post by gregeusa on October 22, 2025, 10:53:30 AM »
pretty common philosophy, pulling a train more reliable than pushing one. prototype and model.

also unpowered unit is normally lighter, more issue pushing lightweight car from end of train

(there are other prototype reasons also)

some of these are also geared higher, so might need the extra motive power.

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RailPro Specific Help & Discussion / Re: Installing into a push-pull trainset
« Last post by G8B4Life on October 22, 2025, 01:50:00 AM »
It will all depend on what Rapido actually does. If each cab is actually powered and contains a plug for DCC/LM then yes it should be as simple as plugging in your LM's and setting everything up. I can't say I've ever seen anyone offer a self contained set like the Williams is and both cabs are powered (let alone thinking of the cost of two decoders/LM's  to run on DCC/RP). I would expect one cab would be a dummy but it certainly appears Rapido is doing them with two powered cabs as the default option. Interesting.

- Tim
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RailPro Specific Help & Discussion / Re: Those with dual motored engines - how does RailPro handle parallel vs. series?
« Last post by gregeusa on October 21, 2025, 09:25:03 PM »
should result in less amperage draw but significantly lowered top speed.
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RailPro Specific Help & Discussion / Those with dual motored engines - how does RailPro handle parallel vs. series?
« Last post by TJMac on October 21, 2025, 06:52:23 PM »
Has anyone tried running the motors in series? What was the result?
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RailPro Specific Help & Discussion / Installing into a push-pull trainset
« Last post by faithie999 on October 21, 2025, 01:54:43 AM »
Rapido has recently announced the New Haven (and others) Roger Williams trainset.  The NH purchased them in 1956 and consisted of front and rear RDC cab units and several intermediate RDC's.

the Rapido set will have front and rear powered cab units and a single intermediate unpowered RDC.

will installation and operation be as simple as installing an LM in both powered units then speed-matching them?

thanks
Ken
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Finished RailPro Installation Examples / Re: Atlas O Scale F7 (2 rail) Install
« Last post by TJMac on October 19, 2025, 06:18:32 PM »
Full load current for this F7 is 1370mA. I only know that means heat won't be an issue according to Ring....no idea if that also means I could have used an LM-3S instead. I have a couple Red Caboose GP9s that were converted to NWSL Stanton drives, and I'd bet money I can use the LM-3S as when I did the full load current test on one of them it only read 650mA.
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Finished RailPro Installation Examples / Re: Atlas O Scale F7 (2 rail) Install
« Last post by JRad on October 19, 2025, 04:10:01 PM »
Does your O Scale F7 draw so much current that the G scale board is required?
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Finished RailPro Installation Examples / Atlas O Scale F7 (2 rail) Install
« Last post by TJMac on October 19, 2025, 10:49:36 AM »
My first RailPro install....couldn't have picked an easier engine....so much room.

1. Remove all electronics and rewire the four-wire truck plugs to match type and output
2. Build harness to connect trucks to LM-4S-G
3. Build second harness to connect Atlas speaker and existing lights to LM-4S-G
4. Create custom LM mount using Fusion360 and 3D print

All my engines will be wired exactly the same so that electric components can be interchangeable regardless of brand/type



70
RailPro Specific Help & Discussion / New RailPro install - have questions
« Last post by TJMac on October 19, 2025, 10:27:30 AM »
New HC-3 starter kit up and running with an LM-4G-S installed into an Atlas O scale F7. No real issues other than time to download / transfer files.

My question(s) pertain(s) to running trains - my understanding is that the programable Acceleration Time and Deceleration Time are similar to the momentum function on a straight DC layout. What do the times represent? Is that time from 100% throttle to 0% / 0% to 100% throttle or is it something different? I guess I was expecting more of a change when going from zero to max in that adjustment. So much so I was using Load to increase momentum.

Which leads me to question #2 - Is there a way to set the Load of a locomotive and save it? I was adjusting mine to increase momentum as well as timing the notch changes. Was disappointed to learn (unless I'm missing something) that setting isn't saved anywhere so it has to be entered each running session.

Other than that, great way to run trains!

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