While ON30 is only .125 inches different than ON3 - - Guess what, that is 6 scale inches. That is exactly the difference between prototype 30 inch gauge and 36 inch gauge (3 ft). To me it seems siginificant.
And while there are a lot of things available in ON30, they are often based on odd prototypes, or no protoype such as fore-shortened passenger and freight cars.
mostly smaller steam engines often based on industrial or foreign (export) prototypes have been done. None of the common big narrow gauge (3ft) prototypes such as EBT Mikados or the variety of mikados on the D&RG and RGS have been done. Even the bigger consolidations have been ignored by the ON30 mfg.
It is all a matter of choice and what you want to accomplish. I like to see/have models of real prototypes even if lettered for private roadnames.
I'm new to narrow gauge so forgive my ignorance, but I thought MMI had made the K-27 and K-28 Mikes in both ON3 and ON30?
