Everything on model trains, model railroads, model railways, locomotives, model train layouts, scenery, wiring, DCC and more. Enjoy the world's best hobby... model railroading!
Everything on model trains, model railroads, model railways, locomotives, model train layouts, scenery, wiring, DCC and more. Enjoy the world's best hobby... model railroading!
The important dimension is the gauge of the track, as different manufacturers may have different thickness flanges on their wheels.
N gauge is 9mm, so the distance between the _outsides_ of the flanges should be minutely less than that.
When you have axle/wheel assemblies all from the same maker, you can note the inner dimension and use it as a standard for checking those.
Invest in an N scale NMRA Guage. It is a Go/NoGo guage for wheels and track.