47827
Member
There’s nothing wrong with the 67’s ETH: it’s poorly-maintained stock that is the problem with them.
A combination in some cases, but still making charter use iffy on air cons either way. The stock didn't help matters (I'll confirm that) but the eth system has proved too sensitive on longer rakes of air con stock (Inverness sleeper often being the most they could manage), even within the maximum index parameters. Can also recall Riv sets that were actually tested in front of me and found to be free of earth fault type issues that the 67s didn't like but the eth on the 67 simply not wanting to play ball because it was close to its limit. Once had 2 on 1 set like that so on came the Rolls Royce genny engine to save the day. With long rakes of air cons, unless you switch a number of vehicles on aux only and run them off batteries there's a high chance (about 50% on the data recorded at the time) you won't power anything above 9 or 10 vehicles consistently with any functioning 67. This was on the list of multiple reasons NB pulled the contract from DB at the end of 2010 (despite their stock being somewhat better maintained) and reverted to 47s via DRS. Recall being delayed leaving Crewe by nearly an hour en route Edinburgh and 1 of the 2 67s was being taken to go on 1 of the last DB hauled NB trains. No prizes for guessing what the original loco couldn't do on the Belle. The blame game never washed with passengers ensuring a reduced catering service, sweatbox or icebox experience on board.
RE 57/0s queried by the original poster. Those stored in worse condition typically, no ETH etc. 75mph can be resolved as per the WCRC examples but since they stopped doing the Scotsman, which uses in-house generator supply, there is little to put them on.