Minimum Railway Curve Radius - Problem Curves

Problem Curves

  • The Australian Standard Garratt had flangeless leading driving wheels which tended to cause derailments on sharp curves.
  • Sharp curves on the Port Augusta to Hawker line of the South Australian Railways caused derailment problems when bigger and heavier SAR X class locomotives were introduced, requiring deviations to ease the curves.
  • 5-chain (101 m; 330 ft) curves on the Oberon railway line, New South Wales, limited steam locomotives to the 19 class.

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