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Published

S scale

vr.tr.s-scale · thing-q454996

Let an agent explain S scale and its standards, compare it with other model railway scales, support modellers in finding equipment and standards, and describe its history.

Thing Registry Cross-cutting context XCT.REL
Bundle → Layer → Finding → QuestionsClassifiersWhat it isWhy it existsDistinguishing featuresWhat robots and AI may and may not doMoral aspectsOwnersLinks to other meta-modelsIdentity and identifiersDirect propertiesRecognitionCapabilities and actionsHazards and failure modesStandards and interfacesContext of useSources

Bundle → Layer → Finding → Questions Filled

4 bundles · 8 layers · 8 findings · 16 questions

Understand What S scale is.

Scale

Scale and gauge.

Scale

Scale.

  1. What are the ratio and track gauge of S scale, and what are Sn3 and Sn3 and a half? definition
  2. How does it compare with HO, OO and O scales? definition

Standards

Standards.

Standards

Standards.

  1. Which standards bodies define S scale wheel, track and coupler standards? provenance
  2. How do hi-rail and scale standards differ? definition
Model Modelling in S.

Equipment

Finding equipment.

Equipment

Equipment.

  1. Which manufacturers and suppliers produce S scale models and track, and which societies support modellers? provenance
  2. Is American Flyer equipment compatible? boundary

Build

Building a layout.

Build

Building.

  1. How can an S scale layout be planned, including space, radii and control? action
  2. Which conversions from other scales are possible? action
History History of S scale.

Origins

Origins.

Origins

Origins.

  1. How did S scale originate, and what role did American Flyer play? provenance
  2. How has its popularity changed? provenance

Collect

Collecting.

Collect

Collecting.

  1. How are vintage S scale trains valued and restored? provenance
  2. Which entry fits a specific manufacturer? action
Learn Community and teaching.

Community

Societies and events.

Community

Community.

  1. Which S scale societies, shows and publications exist? provenance
  2. How can newcomers get started? action

Teach

Teaching with models.

Teach

Teaching.

  1. How can model railways teach scale, engineering and history? action
  2. Which misconceptions arise about scales? provenance

Classifiers Filled

Family
Thing Registry
Category
Cross-cutting context
Entry kind
thing
Plane
XCT
Domain
XCT.REL
Other names and narrower kinds
Sn3½

What it is Filled

A model railway scale of 1:64, in which standard gauge track is 22.42 millimetres wide, developed in the 1930s and popularised by American Flyer trains, with narrow gauge variants such as Sn3 and Sn3 and a half representing narrower prototypes; S scale sits between HO and O scales and is supported by manufacturers, societies and standards bodies.

Why it exists Filled

Let an agent explain S scale and its standards, compare it with other model railway scales, support modellers in finding equipment and standards, and describe its history.

Distinguishing features Filled

  • 1:64 ratio
  • Standard gauge 22.42 mm
  • Narrow gauge variants
  • Standards bodies

What robots and AI may and may not do Filled

Must not

  • Mislabel models as S scale when they are not.
  • Confuse S scale with HO or O scale in sales or advice.
  • Leave small parts or live track where young children can reach them.
  • Copy manufacturers' designs without permission.

Only with a human decision

  • Purchases or trades on someone's behalf.

May

  • Explain S scale, its ratio and gauge variants.
  • Help modellers check track and models against the scale's standards.

Moral aspects Filled

  • Model railway hobbies bring communities together across ages.
  • Honest labelling protects buyers.

Who is affected

  • Modellers
  • Children
  • Buyers

Owners Filled

Steward

Nobody owns the scale; modelling societies and standards bodies maintain it.

Links to other meta-models Filled

parent

  • Q436435 - registry parent class

related

  • rail transport modelling scale - category
  • electric locomotive - prototypes modelled
  • monorail - other rail prototypes
  • dimension - scale ratios

What else AI and robots need to interact with it Filled

Identity and identifiers required Filled

  • Vercy registry: vr.tr.s-scale
  • Wikidata: Q454996 (https://www.wikidata.org/wiki/Q454996)

Direct properties not applicable Not applicable

Not applicable

Plane XCT: no invented physical properties.

Recognition optional Filled

  • 1:64 scale
  • Between HO and O
  • HO is 1:87 and O is around 1:48 or 1:45
  • Model trains at 1:64 on 22.42 millimetre gauge track.

Capabilities and actions required Filled

  • explain the scale and gauge
  • compare with other scales
  • support finding equipment and standards
  • describe history

Hazards and failure modes required Filled

  • Mixing incompatible standards such as hi-rail and scale wheels
  • Limited product availability
  • Confusing S with other scales

Standards and interfaces required Filled

  • NMRA and other modelling standards for S scale
  • Electrical safety for model power supplies

Context of use required Filled

  • A model railway scale.
  • S standard gauge
  • Sn3 and Sn3 and a half narrow gauge
  • American Flyer compatible models
  • scale and hi-rail variants

Sources Filled

  1. Wikidata item Q454996: S scale - identity and sense of the item
  2. Wikipedia: S scale - general description of the item

Open questions

  • Should narrow gauge variants be separate entries?
  • How should standards documents be linked?
  • How should societies be linked?

Machine files

Card as JSON Specification Card backlog vercy.card/1

Provenance

thing registry research (pass 2) · unreviewed

Built from: models/things/publications/thing-q454996/spec.json