Hey Matt
Is your A/F stuff HO or S, I might be interested if its the old S gauge stuff with the pointy couplers.
Later Vic
No, they are very different.
On2, On30, and On3 are all O scale: 1/4"=1’-0" but the track gauges are very different
Sn3 and On30 both use HO guage 16mm track BUT On30 is 1/4" scale, Sn3 is 3/16" scale. You see, a bit of difference scale wise.
On2 track is all handlaid as I dont know of any maker of 1/2" or 13mm track.
On30 uses 16mm HO track and there are specific makers of On30 scale track, Peco being the biggest. Micro-Engineering another.
On3 uses 3/4"or 19mm guage track and also has several suppliers.
Sn3 also has suppliers of ready made track but most use commercial HO rails and switch kits on handlaid track.
Check out this link: Everything you ever wanted to know about model train scales and guages and quite a bit you didnt want to know…
Vic,
Thank you! Clear as mud now [:D]