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· Railroad Tycoon
26,364 Posts
So, On30 is O scale trains on HO gauge track... Now, with O scale we all know how there are several different sizes... With On30 though, is everything (like Bachmann Spectrum) 1/48 scale?

I think ON30 is all the same size.

I found this a copy and paste.

On30 uses the American O scale of 1/4" to the foot, (ratio 1:48) to operate trains on HO gauge (16.5 mm/0.650 in) track. The 30 indicates the scale/gauge combination is used to model 2 ft 6 in (762 mm) (30") narrow gauge prototypes, although it is often used to model 2 ft (610 mm) and 3 ft (914 mm) gauge prototypes as well. This scale/gauge combination is sometimes referred to as On2½.

Shaygetz (spelled wrong?) will know for sure.

· Registered
6 Posts
Hi all,

I was a little surprised to see the confusion in this thread on scale/gauge.

On30 is O Scale narrow gauge rolling stock running on scale 30" gauge track. It's 1/4"=1' just like regular O scale equipment.

It just happens to more or less scale out to HO standard gauge track (and is compatible with HO tack).

On3, same deal but on 3' gauge track.

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