Reply to "NMRA STANDARDS FOR HI-RAIL/DEEP FLANGE"

Ted HikelOGR Forum Member

Ted,
That's sad to read. I've built all my HO turnouts but non for 3 rail. I'm sure that center rail creates a lot of extra problems.

Sam

The NMRA doesn't even have a standard on center rail dimensions on switches. They can't get the dimensions for two rails correct.

Actually, I've hand laid all of my 3 rail track to NMRA standards and have no problem whatsoever.

MWB

How much 3 rail O gauge track and how many switches have you built to NMRA standards? How many pieces or rolling stock are you running on that track and what sorts of wheel sets do they have?

For modern rolling stock with fast angle wheels the NMRA guard rail and flangeway dimensions are just atrocious. They really should withdraw the standard. It is totally incompatible with contemporary rolling stock.

3/26/1511:21 AM

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