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Topics - ON28

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RailPro Installations / Intermountain F3 install
« on: December 04, 2019, 09:32:52 AM »
Sharing this, an LM-3S in an HO 8-pin DCC-ready Intermountain F3. I first tore down and cleaned up the drive components, a process which is essential for most efficient performance, since I acquired this loco second-hand. Stiff pickup wires caused the original trucks to derail -- a known issue -- Intermountain provided replacements. I retained the factory light board for plug-in convenience and added a Yelo-Glo Miniatronics LED headlight, mounted on a styrene base that will also support crew figures. The LM is at the rear, with an iPhone 4S mounted on top, and both fit with no frame or shell modifications. I downloaded a generic diesel sound which offers more bass rumble than the ULT 567-16. An older model that's nicely-detailed and a good runner with RailPro.

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RailPro Installations / Proto BL2 install
« on: November 17, 2019, 04:49:36 PM »
My second install, pulled the light board and hard-wired an original late-issue BL2 with an LM-2. I left in the plastic board to mount the module and lights. The headlight and rear light are Miniatronics 3mm YeloGlo LED with resistors, shrouded in heatshrink. I added heatshrink tubing to cover solder joints and other bare wire. For neatness, I removed unused wires from the JST plug. The crew figures got some detail paint, as well. Still have some work to do to seal light leaks in the cab, and to add phosphor wire pickups to the trucks. Interestingly, this loco runs better in a consist than alone.

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RailPro Installations / Atlas GP7 install
« on: November 14, 2019, 11:14:56 PM »
Thought I'd show my install -- my first sound and light job for any loco. I retained the factory light board for plug-in convenience of the LM-S3, with the board's protruding pegs clipped off. I wired a pair of shortened iPhone 4s speakers in series, for greater amplitude, mounted on .030 styrene super-glued to the chassis towers. I got the speakers from Kaylee Zheng of Tom's Trains in Connecticut ( The lights are Miniatronics YeloGlo LEDs, shrouded with shrink tubing, mounted near the stock lightbars with the tube extension clipped off. I use masking tape to hold things down, easier to manipulate than Kapton tape.

RailPro Discussion & Help / Model Railroad Planning and RP
« on: November 14, 2019, 09:24:23 PM »
Large O scale layout featured in MRP, noting in the Table of Contents and high up in the story that it runs deadrail on battery. Only later in the text does it briefly mention RailPro installed by Remote Control Systems of New England. All well and good, but this is one reason why, when I tell other hobbyists I am using RP, they say, "Oh yes, that's a battery system." Only when I demo and explain that it runs on constant voltage like DCC do they warm to the subject.

RailPro is (and is perceived as) a fringe system, and that's a shame for the all good things it brings to the table. 

RailPro Discussion & Help / LM2S behavior
« on: October 31, 2019, 02:00:19 PM »
Hello board,

I hard-wired an LM2S in a Life-Like Proto BL2. It runs fine except for occasional stalls on dead spots, such as frogs, which causes the module to switch direction and I have to change it back. Also, a stall will sometimes unlink a consist, forcing a re-linking. Is this normal behavior for the module? I am using Atlas metal frog C100 and 83 switches without supplementary feeds. Thanks!

RailPro Discussion & Help / Proto 2000 BL2 install
« on: September 19, 2019, 04:07:53 PM »
When I plugged in a tested LM-3S to my working-on-DC DCC-ready Life-Like late release BL2, I could hear power to the motor but nothing moved. Couldn't do the auto current test, either. I had removed the factory light board and disconnected the factory light bulbs. Second try I disconnected the motor wire to the frame but I can see now that was a mistake as the motor is already isolated from the frame. Again, the loco worked fine on DC and the LM worked fine on another unit. Any ideas here are appreciated.

RailPro Discussion & Help / LM-3S over voltage question
« on: September 15, 2019, 11:55:43 AM »


I recently bought a used LM-3S. I tested it in my Atlas Classic GP-7, which I have been running for several months fine with another 3S. I set the max voltage on the "new" module but when I tried to throttle up, it returned an Over Voltage warning. I tried resetting to default settings and performing another max voltage test, but the test failed, too. I removed the module and tested a number of other modules, which worked OK. Any suggestions here? Thanks!

RailPro Discussion & Help / MU LM-3S and LM-2
« on: August 11, 2019, 02:42:47 PM »
Are there any issues consisting a loco with an LM-3S and another with an LM -2? Separately, do I have to add resistors if I swap out bulbs for LEDs with either the LM-3 or -2, or are they configured to accommodate LEDs without a resistor? Thanks!

RailPro Discussion & Help / Mixing RP/NCE power supplies
« on: July 26, 2019, 10:03:21 AM »
Hello all. Can I use my RP power supply and NCE base station/booster in tandem to power my layout? Are there an issues dividing the layout into two separate blocks/districts and running trains between them? I have about 250 feet of mainline on two decks including 50 feet of track in my helix. I plan a reverse loop on each deck controlled by auto reverse modules, but only for break-in and display running. Thanks!

RailPro Discussion & Help / Two iPhone speakers and LM-3S
« on: July 17, 2019, 10:58:03 PM »
I've got a single iPhone 4S speaker wired into my Atlas Geep, and thinking of adding another for better sound. Can the LM amplifier circuit handle less than 8 ohms, or is that the minimum? Don't want to fry the LM!

What is the maximum amp rating for an LM? I run HO with motors up to about 1A stall current or less. Can I hardwire two locos to be controlled by one LM? I didn't see this info on RE site.

RailPro Installations / Atlas Classic GP7 lights
« on: July 09, 2019, 08:40:29 AM »

I installed an LM-3S, my first, in my DCC-ready loco, which I ran for years on DC. Interestingly, the LM turned on the lights, which I long had assumed were burned out. Though I enabled it, I cannot get directional lighting to operate and have to switch the lights manually. I removed the two diodes on the Atlas light board in order to get the LM to lay flat under the shell, maybe that is the problem?

RailPro Discussion & Help / HC and Mac
« on: July 07, 2019, 08:15:31 PM »

I was a Windows guy until June, when I bought my first Mac laptop. Now I'm RailPro, and looking for a workaround instead of having to use someone else's PC. I successfully downloaded the RPA using Winebottler, but the Mac won't recognize the HC. Before I buy the CI, will it work from a Mac to program a module using the HC simulator? Thanks!

RailPro Discussion & Help / will the ULT file play on a LM2-S
« on: July 05, 2019, 01:50:05 PM »
New to RP, will the ULT file play on a LM2-S?

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