Burlington Northern (BN) is using swing-nose frogs in place of manganese frogs and tangential geometry turnouts on azobe ties for heavy tonnage track to reduce maintenance costs and improve train performance. Swing-nose frogs put in use in March 1986 and are still in use, have only needed grinding whereas manganese frogs would have had to be replaced. Even after the useful life of the swing-nose frogs on the track, they can be put to use elsewhere instead of being scrapped. BN wanted to luse less bolts, so it tried getting welded vees that would be flat. Too many problems resulted in this approach so, BN is now doing tests on a bolted vee-type swing-nose frog.

Media Info

Subject/Index Terms

Filing Info

  • Accession Number: 00497171
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Sep 30 1991 12:00AM