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I run a combination of 2 and 3 rail on my Atlas tracked layout. o-54 and o-72 switches in the yard. O-72 and larger on the mains. All guardrails replaced with same height track set flange to flange spacing. Guardrails cut as short as possible should allow multi axles like steam engines and 3 axle cars and diesels to pass without binding.
Started out with NWSL wheel sets but these proved to be to unreliable. They had to be re gauged perfectly. Some cars never de railed and still have the narrow wheels. Was like running HO. All others were changed to Atlas 2 rail wheels that run perfectly all the time.
Have 4 Atlas GP9s converted to scale wheels and a Lionel E-7AA with P&D scale wheels get alot of run time. Even a Westside brass 2-8-2 converted to 3 rail tracks well when it runs.
http://rides.webshots.com/vide...88BBhsjO?vhost=rides
