Frequently Asked Questions
We have a standard for Free-moS modules to ensure that all modules are compatible and can be seamlessly connected. These standards help maintain a high level of quality and reliability, making it easier for participants to collaborate and create cohesive layouts. By following these guidelines, we can ensure that each module meets the necessary specifications, resulting in a more enjoyable and efficient experience for everyone involved.
Questions about the Standards
What if I skip one of the standards?
All Free-moS standards are required for interoperability of modules. By skipping even one standard, your module may not work with others who followed the standard. When looking at The Standards please make sure your module follows all lines that start with an S.
Note: As of January 17th, 2025 the standards have not yet been finalized. Please reach out to one or more other module builder or use the Contact form before starting your build to see if there have been any changes. Currently, Shane Lambert is managing these standards for the modules he is planning.
Why have a set width for the endplate?
Having a set width for the endplate allows for a seamless fascia when setting up a public layout. The jagged, or stair stepped, appearance I have seen with S-MOD and other standards simply does not appeal to me. Having a set width for single and double track endplates eliminates this visual issue.
Why only 42 inches for the layout height?
While developing this standard, I considered following HO Scale Free-mo with a height of 50 inches. I built many HO Scale Free-mo modules over a 10 year period, and the most common complaint at public shows was that it was too high. I was even denied attendance at two shows due to the height of the layout. So I chose to adopt the S-MOD standard with the option of using risers or longer legs to match other S Scale standards should the need arise.
Questions about Wiring
Why not use a 4 or 6 pin connector?
While having only one connector at each joint could save time during setup, coming up with something that works well and is reversible is difficult. The design of the plug, pioneered at first by the Free-moN group and later adopted by the Ho Scale Free-mo allows for all modules to be used in either orientation.
For builders coming from other club standards, having the wires reversed at each end sounds confusing. There have been a lot of questions about how this works. But rather than try to explain, click on the image to the right for a visual representation of how this reversing works. Image credit to Robert Sterner, HO Scale Free-mo modeler.
Miscellaneous Questions
Why another standard?
I have been researching existing standards for S Scale modules for some time. The original idea was to follow the S-MOD standard but had a few too many issues with it, including the wiring at the module ends (still specifies Cinch Jones Plugs), a lack of consistent module widths and track placement. This is why I adopted a standard module width and track placement. The Free-moS standard for track placement and wiring allows modules to be flipped for best placement of industries in a given setup. I did adopt the 42 inch layout height for possible future interoperability.
I also looked at the S Scale Workshop but could not find a published standard. They are based on the HO Scale Free-mo standard as is Free-moS, so other than layout height, they may be compatible. I had the same issue with the Bay Area S Scalers, who have done excellent work, but it seems their modules lack a set width.
Why not just use the HO Scale Free-mo standard?
While the HO Scale Free-mo standard is a great standard, it is not ideal for S Scale. The track centers are too close together and I am not really interested in adding fitter rails at every joint, although that may be needed if it is decided to use rail gaps. The S-MOD standard is a better fit for S Scale, but it is a little outdate and has a few issues that I have addressed in the Free-moS standard.