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Post by class345 on May 18, 2014 10:39:04 GMT
Has anyone else noticed an increase in defective units out on the main since the new timetable came in?
Not bad faults, minor little niggles that wouldn't affect the trains ability to be in service such as the following;
- Next station announcements repeating twice (the train I'm currently on is doing this)
- Total loss of door buzzers and announcements (again, this unit did this at Buckhurst Hill after repeating the announcement twice)
- Lighting failure (including emergency lighting) happening on one unit in the train, still get light through from adjacent cars though)
- Motor failure after pilot light loss (had a very slow trip from Leytonstone to Leyton the other day where the driver reset them)
Is it just a coincidence that I'm traveling on a lot of bad units or are the new requirements on availability meaning that depot maintenance time is at a premium and only being used for major faults?
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Post by Seven Kings Kid on May 19, 2014 10:02:25 GMT
Whilst I haven't noticed the faults you list (I no longer commute via the Central), it does not surprise me.
The new timetable means more trains out on the road for greater amounts of time, so the time normally used to rectify these minor faults must be being spent on fixing any bigger faults that occur.
The 92 stock is hardly the most reliable on LU, so why they decided to try such a resource heavy timetable is beyond me. I wouldn't be at all surprised if the next timetable slightly reduces the number of trains needed as the number of cancellations due to faulty stock must be increasing thereby affecting performance figures.
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Post by GentlemanJim on Jun 4, 2014 21:12:09 GMT
92TS have always had a bad reputation for failures from minor to major.
When I was on the front I shut the Central down for 45 minutes on a Saturday afternoon at NHG. The second half of my shift was pickup at WHC reverse NOA to HAI. At NOA the local yobs had let off all the fire extinguishers so it was WHC Ety C/O back out WHC - LIS for RT WB but this train had lighting issues so it was constant trip and reset the AUX but at NHG I had brake release but NFM. The Car Examiner had to leap frog to get to me as trains were stuck behind me, on his way through he discovered the lighting fuses removed from one carriage. When he got to the cab we went through the usual checks, it turned out the Emergency Brake Button was playing up so it was down to LIS back to WHC for a C/O. Another time coming WB over the point work at LOU... 'click' and the train stopped..'oh bugger thought I' the HSCB had tripped but it played ball and reset nicely, was I glad when I went to Wood Lane.
Dealing with the constant Traction Fault reports from T/Ops, negative/positive earth indications kept us busy with C/O's then there was the farce with the 'flats' that seemed to go on forever until 'slip slide' protection eventually came in. The earth problems I mentioned previously were mainly caused by compressor faults, OK as long as you don't have one going East with a -ve earth and anther going West with a +ve earth..... many a time we'd identify the train and let the T/Op know but quite usually the earth would disappear which meant the compressor had gone bang. There was also the farce with the shoes being knocked off, I recall a door coming adrift and of course the Traction Motor detachment at CHL which should never have happened in the first place as LU were aware of 2 incidents of the same thing happening previously, albeit at low speed, One out of LOU Sdg. and the other in HAI Dt.
By flogging them to death they're asking for problems..... happy days ahead.
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Post by Zippy on Jun 7, 2014 11:27:39 GMT
Now the Jubilee and Northern are ATO, what's the betting that they go the same way in the future?
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Post by Nortube on Jun 8, 2014 17:02:12 GMT
The 95 stock had some defects that were there almost from the start, including faulty air conditioning in many cabs that went unrepaired for months. There were other problems, such as the fans blowing out dirt into the cars as the warm weather started, although that may have been down to lack of maintenance.
Generally, I don't think they were too bad. They used to shed current shoes all over the place (they have a built-in weak link) which caused various problems either on the train (such as potential loss of 630v DC on a car, which could lead to gapping and other problems) or on the track where the lost shoes sometimes caused earths or points failure.
The 95 stock were a later model than the 96 stock and had some improvements which probably helped make them more reliable. Fifteen years on, the defects may well have reached the bottom of the bathtub curve and be starting on the upward rise again.
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Post by cstock on Jun 17, 2014 23:34:08 GMT
It does make you wonder how these trains will cope with the extra mileage with night tube.
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Post by GentlemanJim on Jun 17, 2014 23:54:36 GMT
It does make you wonder how these trains will cope with the extra mileage with night tube. They won't cope or if they do I'll be very surprised as nothing is made in this day and age to withstand such a hammering. I believe this intense service was never planned for any of this stock, it's something dreamt up by BoJo and his political mates none who have a clue about train equipment. If you want to drive something hard then it needs to be built to withstand the hammering it's going to take...... just wait for the big accident to occur when something major fails. |
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Post by class345 on Jun 18, 2014 6:30:09 GMT
Like a motor falling off...  |
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Post by GentlemanJim on Jun 18, 2014 8:45:49 GMT
Like a motor falling off... Exactly....  I can't and probably will never understand why everything in this day and age has to be so complicated, rolling stock and signalling are a perfect example. |
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Post by class345 on Jun 18, 2014 9:31:04 GMT
I don't think the stock or signalling is too complicated, I do agree that they were not designed for this level of use though.
I'm sure if they knew they were heading for 24 hour running and this level of service throughout the day things would have been designed slightly differently.
The 09 stock was designed for intensive service, and seems to be very good at it from the times I've used the Vic. I don't think when they designed the 92 stock that the Central would get the sort of timetable it currently has, hence it isn't as good at it.
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