12-21-2009, 10:01 PM
Having done a bit more reading, there appear to be 3 standards for N-scale flanges: fine-scale, standard and hi-rail. The fine-scale flanges will run on code 55, but the hi-rail (pizza-cutter) won't. A lot of new rolling stock is coming with fine-scale wheelsets, but most will be standard or hi-rail. Those will need to have their wheelsets replaced with fine-scale, like MicroTrains low-profile wheels.
RP-25 is a recommended practice, and so isn't an industry standard. I believe the industry standard for N-scale is still the pizza-cutter hi-rail flange.
RP-25 is a recommended practice, and so isn't an industry standard. I believe the industry standard for N-scale is still the pizza-cutter hi-rail flange.