Metro Transit Hiawatha LRT

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Metro Transit Hiawatha LRT Rail Lubricator
Program
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Demonstration of Rail Lubricator Noise Reduction
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Picture of curve worn T-Rail

Worn rail contact surface in a curve where the
wear takes place.
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Wheel tracking in a right handed curve FRICTION
RAIL WHEEL WEAR
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• Benefit of Rail Lubrication
•  
• LRV wheel resistance around curves is reduced by
  lubrication.
• 48 less energy is required by the traction power
  motors.
• Lubricant film between the rail and wheel
  increase useable rail and wheel life. 

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Operational Advantages

• Reductions in noise ranging from 6.3 to 22.8 dB,
• with an average reduction of 12 dB

• Smoother, quieter ride for our passengers

• Greatly reduces the possibility of the wheel
  flange
• climbing the gauge face of the rail (derailment)

• Reduces ground-borne vibration

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Installation status

• Six Track Lubricators installed to date in tight
  radius curves along the LRT alignment.
• Twelve remaining to be installed to eliminate
  remaining high rail wear areas.

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100 Radius Curve MOA
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Metro Transit Rail Lubricator Controller MOA
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Metro Transit Rail Lubricator MOA
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GOALS

• Install remaining (12) lubricators

• Improve ride quality

• Improve system reliability

• Increase infrastructure service life

• Improve system safety

• Maintain rail lubrication standards
• for future expansion