ahhhh see thats what I wondered and could not find the answer on Google, so HOn30 is the same as N scale. So do manufactures produce HOn3 track or do you have to hand lay it?
....Hence the intrest in HOn3.....
Both Shinohara and MicroEngineering make both flex track and turnouts for HOn3.
Shinohara's line is all code 70, a little over-size for most uses, but there is a wide range of turnouts, dual gauge track and turnouts, and so on. Availability at the LHS isn't always there, which is true for most HOn3 items. Very few hobby shops carry much in the way of HOn3; most of the time I order or sometimes buy from eBay sellers.
ME makes HOn3 flex track in code 70, code 55, and code 40 rail heights. They make #6 turnouts in code 55, period.
BK and FastTracks make turnout kits in most any code, and a lot of different configurations. Railway Engineering makes beautiful custom turnouts to your specs.
HOn3 is an HO scale rendering of 3ft narrow gauge. It uses an accurate 10.5 mm track gauge (3 times 3.5 mm/ft). HOn30 is a rough approximation of 30" gauge in HO scale; it uses N gauge track specs and mechanisms. HOn30 is commonly use to represent 2ft gauge prototypes or free lance narrow gauge. True HOn2 has never caught on. In North America, the most common narrow gauges were 3ft, followed by 2ft. 30" prototypes were a distant 3rd.
It used to be there was more non-brass rolling stock available in HOn30 than in HOn3, but that has changed substantially in the last 2 years. Cheap N donor mechanisms have become harder to come by, and there has been a profusion of RTR HOn3 from Blackstone, MMI, and MicroTrains.
hope this helps