I love N scale, even though it seems to get smaller and smaller as the years go by. As others have mentioned, the Atlas and Kato locos are hard to beat for running qualities. The most common engine problem that you might run into is a noisy motor end bearing, which can usually be fixed with a drop of light oil where the motor shaft enters the motor—the bad thing is you have to disassemble the loco to get to the motor. The biggest thing you can do to keep your N scale trains running well is to run them often! If you have to clean your track a lot in N scale it’s almost always because you are over-lubricating your equipment. It’s a myth that N scale requires constant track cleaning or that trains run erratically due to poor electrical contact—if you are having problems with this then something is causing it, because N scale done right is very reliable.
N scale operation is actually very good nowadays—and in fact, the equipment generally tracks and couples and uncouples better than HO and with less overall fussing than HO. N scale equipment is also pretty tough, and will stand up to a lot of handling.
The biggest area where improvement is needed in N scale is in turnout tracking and reliability. Kato track works extremely well, but I recommend the #6 turnouts for best tracking and bulletproof reliability. Atlas code 55 track looks great, but the Atlas c55 turnouts can be very fussy and I avoid them. Peco turnouts work very well, but they aren’t as good looking as Atlas. Many modelers build turnouts using the FastTracks system and these look and perform fantastic when they are properly built and installed.
Two things that are very helpful to think about when working with N scale. Both are often overlooked when people build N layouts. The first thing is layout height—it is amazing how often I see N layouts built with a HO or O scale mindset. If you don’t like N scale you may tend to look down on the scale because you are literally looking down too much! Get that beautiful rolling stock up where you can see it from the proper perspective and it will make all the difference!
The second thing is lighting—believe it or not, N scale is actually smaller than the larger scales 😁😁😁, so you need to have a brightly lit layout to see those trains at their best. Poor layout lighting is never a good thing, but it’s a much bigger deal when your layout is N scale!
Jeff C