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Front #133

ABTH 103.2.1

What is the preferred option to limit the number of dynamic brake axles?

  1. Cut out basic-range dynamic brakes on trailing locomotives.
  2. Cut out extended-range dynamic brakes on the lead locomotive.
  3. Cut out extended-range dynamic brakes on trailing locomotives.
  4. Cut out basic-range dynamic brakes on the lead locomotive.
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ABTH 103.2.1


Answer: Cut out basic-range dynamic brakes on trailing locomotives.
Feedback:
Trains have a maximum limit of dynamic brake axles that can be used. When a situation requires the engineer to cut out dynamic brakes, the first option (if available) is to cut out basicrange dynamic brakes on trailing locomotives. Basic-range dynamic brakes lose their effectiveness at a higher speed than extended-range dynamic brakes.