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Unread 30-06-2009, 14:49   #8
Mark Gleeson
Technical Officer
 
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Join Date: Dec 2005
Location: Coach C, Seat 33
Posts: 12,669
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Its very warm by standards

The HEP runs the engine at full rev all day which stresses the cooling systems, so warm weather causes trouble. The air conditioning on the coaches is also on full power which draws more power again making the engine work harder

That missing coach saves 40 tons of weight and about 35kW drain on the HEP system.
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