Reply to "Track Question from a Noob"

jim schleutker posted:

Allen. shouldn't ON30 rail be code 100? since it is O gauge. I used M.E. code 83. Just like every thing ...now I wished I used code 100. Most replies i have received on this topic every one though that the On30 would be more correct with code 83. I cant even imagine how some guys will use code 70! 

JIM S.

On30 isn't O gauge , it is HO gauge track, its gauge is thus based on a 1/87 scaling of prototype 4' 8.5" gauge. In O scale 1/48 scale, HO gauge track is roughly 30" prototype. 

The code of the rail has nothing to do with the gauge, code 100 rail is thicker and taller than code 83, the real problem with using code 83 would be if the wheels on the On30 equipment had deep flanges that would hit the ties from what I recall. Code 100 is roughly analogous to Tinplate Lionel track, its higher rail height will allow deep flanged wheels to use it so almost any equipment can run on it. On30 equipment generally has wheelsets that are pretty much inline with HO scale equipment, so code 83 could work assuming the wheelsets meet NMRA standard flange depths. 

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