Piggyback Trains

 
  awsgc24 Minister for Railways

Location: Sydney
A piggyback train is a train of flatcars of one gauge, carrying rails of another gauge, with a ramp, whereby whole trains of the second gauge can be loaded on the flatcars of the first gauge.
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This method was used in the 1950's to allow coal trains of narrow gauge from Leigh Creek, to use the new standard gauge line, partially completed to reach the power station at Port Augusta.
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As the rails on the flatcars are about 1 metre higher than the normal rails, clearances at overbridges, tunnels, overhead wiring, etc., if any need to be about 1 metre higher than before.



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It was found necessary to couple the upper train to a buffer stop at the end opposite the ramp.
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It was also found necessary to connect the air brakes of the upper and lower trains together, so that the combination wasn't too stiff.
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Care has to be taken to keep axle loads on the lower train within limits.
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The maximum speed of the combined train is as yet unknown, perhaps because details of this improvised temporary piggyback operation weren't recorded.

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Unlike other gauge change methods, piggyback trains are simple and easy to build.

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  awsgc24 Minister for Railways

Location: Sydney
See: https://www.railpage.com.au/f-p2030433.htm#2030433 Country Victoria Gauge Change.

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