Live steam can be found in LOTS of scales:
N-scale (rare, but it exists)
HO-scale (rare, but it exists)
S-scale (rare, but it exists)
O-scale - quite common in Europe, less so in the USA, but its out there, runs on 32mm track.
Several scales that run on 45mm “G-gauge” track:
1/32 scale - standard gauge on 45mm track - quite common.
1/29 scale - standard gauge on 45mm track - less common, but growing.
1/24 scale
1/22.5 scale
1/20.3 scale - 3-foot gauge on 45mm track, probably the most popular scale in the USA.
1/13.7 scale, also called 7/8n2, also called SE45 and SE32.
2-foot gauge on 45mm track, or 18" gauge on 32mm track.
Maine 2-footers and industrial 2-footers are modeled in this scale.
largest models that run on 45mm track.
“Ride-on” scales:
“3/4 inch scale” - the smallest of the “ride-on” scales.
3.5" gauge track.
“1-inch scale” - larger ride-on scale. 4.75" gauge track
“1.5 inch scale” - 7.25" or 7.5" gauge…depending on where you live.
most common and generally the largest of the “ride-on” scales…
1/2 scale - literally half the size of the prototype. someone somewhere does it.
1/1 scale - Full size live steam models, the same size as the prototype.
Is it a model or is it “real”? the line is blurry…
the replica locomotives at the “Golden Spike” historic site in Utah fall under this catagory.
let see…thats 15 different scales…and im sure im missing quite a few!
someone probably does the more obscure scales in live steam, like On30 or HOn3…
but those would not be commercially available.
Scot