towerman
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Post by towerman on Aug 31, 2005 19:39:26 GMT
What was the oddity about the compressors on 49TS UNDM 3 car units.
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Deleted
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Post by Deleted on Aug 31, 2005 21:39:16 GMT
Since when have UNDMs had the space for compressors?
Besides, I didn't know the 49TS build included trailers...
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towerman
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Post by towerman on Sept 1, 2005 4:38:21 GMT
UNDM,trailer,motor car.At least that's how they were when I saw them on the railway.Compressors were fitted to the trailer,honest!!!
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Post by q8 on Sept 1, 2005 8:04:00 GMT
They were not the vane type that gave so much trouble CCL4's I think they were called and were originally intended for Trolleybus'es
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towerman
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Post by towerman on Sept 1, 2005 19:28:13 GMT
That's right,they had a horrible tendency to seize up,hence why these units were amongst the first to get scrapped.
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Tom
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Post by Tom on Sept 1, 2005 21:31:09 GMT
I thought they were KLL4s?
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Post by trainopd78 on Sept 1, 2005 22:02:25 GMT
The KLL4's (or was it 7?  ) were eventually replaced by a pump similar to those on 59 stocks which were of a reciprocating type, as these were more robust and less prone to breaking down. Although the KLL4's were a good compressor in theory, they were too refined for Underground service and couldnt cope with the tunnel dust and vibrations that Underground trains have to deal with. |
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towerman
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Post by towerman on Sept 3, 2005 22:28:55 GMT
These compressors were one of the reasons the Northern earned the tag "Misery Line",during the AUEW strike in the late 60's,because these compressors failed so often there was soon a long list of units awaiting compressor changes and the staff who changed them were members of AUEW.
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) were eventually replaced by a pump similar to those on 59 stocks which were of a reciprocating type, as these were more robust and less prone to breaking down. Although the KLL4's were a good compressor in theory, they were too refined for Underground service and couldnt cope with the tunnel dust and vibrations that Underground trains have to deal with.
