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Colin Rosenstiel · September 23rd 07, 02:03 PM posted to uk.transport.london

In article ,
(Clive.) wrote:

In message ,
Colin Rosenstiel writes
It will be because of the requirement that trains had to have at least
two compressors that dictated 6 car trains all the time.
Why? Each compressor car carried two compressors, therefore any
unit could operate as it's own train. Remember the ordinary 4 car
62 stock sets on the Epping to Ongar route?

No, they didn't carry double compressors originally. It was only after
they were mandated that changes were made.

38TS had KLL4 trolleybus-type rotary compressors which were all replaced
in the 1970s (?) by a reciprocating type because of reliability problems.

--
Colin Rosenstiel