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#1 |
Regular Poster
Join Date: Nov 2008
Posts: 146
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![]() Just caught report on defective MkIVs on this mornings programme. God aren't RTE hot sh..t - how many months has this story been running? As usual RTE gave Barry Kenny's half-truths an easy ride. The media have a lot to answer for with regard to the many problems facing Ireland today - I really do despair!!
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#2 |
Technical Officer
Join Date: Dec 2005
Location: Coach C, Seat 33
Posts: 12,669
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![]() I was interviewed for the Sunday Tribune months ago on this, sadly the journalist got a little excited
What has changed is in the last month proof positive that the Mk4 ride problem has a very significant relationship with the track. Irish Rail laid about 2.5 miles of new UIC60 track between Portlaoise and Portarlington and the difference is amazing the Mk4 ceases to flop around and vibrate, everything goes quiet and it just glides. It actually behaves like it should, like a modern European long distance train. The as delivered train had massive faults which should have been dealt with before passengers where carried, yes suspension bolts snapped, others where sheared off and the secondary suspension actually made the bumps worse. The partition doors still haven't been fixed, the doors give trouble and the automatic announcement system still gives trouble. And the coaches don't do 300,000km per annum, well the odometers are just crossing 900,000km after 3 years 8 months, even if they did they need to do 325,000km to keep the Mk3 set idle
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#3 | |
Member
Join Date: Dec 2005
Location: Clonsilla
Posts: 2,812
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![]() Speaking of which!
http://www.tribune.ie/news/home-news...gers-sick-say/ Quote:
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#4 | |
Membership Officer
Join Date: Dec 2005
Location: Maynooth
Posts: 1,116
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When have you ever heard them grill a politician Paxman style? Wait till the soft focus pieces on NAMA are on RTE, instead of being a vehicle to bankrupt the country, it will hailed without any critical analysis. |
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#5 |
Technical Officer
Join Date: Dec 2005
Location: Coach C, Seat 33
Posts: 12,669
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![]() Examiner, Red Fm Cork and Tipp FM so far today.
Its crazy, but finally Irish Rail are admitting its outside specification
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Unhappy with new timetable - let us know Last edited by Mark Gleeson : 11-08-2009 at 09:27. |
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#6 |
Really Regular Poster
Join Date: Dec 2005
Location: Cork-Dublin, Cork Commuter and occasionally DART and Dublin-Wexford
Posts: 855
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#7 |
Technical Officer
Join Date: Dec 2005
Location: Coach C, Seat 33
Posts: 12,669
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![]() Got to love Irish Rail, no no there is nothing wrong
1. Tender for a third party to assist. Surely thats CAF's call? 2. The Mk3/Mk4 test trains in June. Surely that should have been done 3 years ago 3. The new track between Portlaoise and Portarlington really exposes the poor track standard and what an excellent ride the Mk4 has on decent track Given CAF replaced more or less everything in Dec 2006, the whole secondary suspension, altered design to prevent the wild swaying and raised the clearance between the secondary suspension air bag and coach underside to prevent the bolts being sliced off, its hard to see what more can be done. Only one possible solution is fitting a damper on the coupler and to add a damper between the coach body and the bogie (other CAF products in UK have this) to calm the sway down.
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Unhappy with new timetable - let us know Last edited by Mark Gleeson : 11-08-2009 at 10:58. |
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#8 |
Member
Join Date: Oct 2006
Posts: 395
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![]() If the Cork-Dublin tracks are being upgraded and the Mk4 ride is excellent on the new tracks, is there any need to 'fix' the Mk4s?
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#9 |
Technical Officer
Join Date: Dec 2005
Location: Coach C, Seat 33
Posts: 12,669
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![]() The Mk4 ride is below the required standard regardless.
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#10 |
Really Regular Poster
Join Date: Dec 2005
Posts: 585
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![]() I really didn't like the tone that the Irish Rail spokesperson took. He basically implied that Rail Users Ireland are a bunch of trainspotter cooks.
People expect a decent level of service, this is something that Irish Rail has very rarely managed to achieve over the years. Things have improved, but things like shakey trains need to be dealt with without sneering at the passengers who brought the problem to the media's attention. The Cork-Dublin trains are too bumpy at the moment and the Enterprise is even worse. I'm sure the companies who made both of these trains are very reputable and don't have these kinds of problems elsewhere, which leaves only one explanation - the tracks aren't smooth enough. The older Mark 3 trains which used to operate on the Cork line are unusual, they were a British Rail design which was specified to work on shoddy tracks. A BR cost saving programme which avoided / postponed line upgrades in the UK in the 1970s/80s. Last edited by MrX : 11-08-2009 at 21:03. |
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#11 |
Technical Officer
Join Date: Dec 2005
Location: Coach C, Seat 33
Posts: 12,669
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![]() The graphs don't lie, the Mk4 has a problem
Barry can't have it both ways, there is a problem and complaining about us highlighting a real verifiable issue is cheap and unprofessional. Why isn't he giving out to CAF? Then again he could be acting on higher orders. Incidentally the worst ride on the train is actually the control car, then first class its pretty horrible from time to time. I'm a regular Dublin Thurles passenger so I am speaking from first hand experience The Mk4 ![]() The older and smoother Mk3 ![]()
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Unhappy with new timetable - let us know Last edited by Mark Gleeson : 11-08-2009 at 21:43. |
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#12 |
Membership Officer
Join Date: Dec 2005
Location: Maynooth
Posts: 1,116
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![]() Is the top graph from the new €117m train and the bottom from the 1970's reliable carriages?
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#13 | |
Really Regular Poster
Join Date: Dec 2005
Posts: 585
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![]() Quote:
If the train's faulty, it's under warranty and can be fixed for free. So, why shoot the messenger?! |
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#14 | ||
Technical Officer
Join Date: Dec 2005
Location: Coach C, Seat 33
Posts: 12,669
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![]() Quote:
Quote:
To my knowledge the first comparative analysis of the Mk4 ride was done in June 2009, shouldn't that have happened in 2005? The first set of modifications where mainly engineering driven to resolve serious mechanical issues which in turn calmed the secondary suspension And yes in 2006 a IE manager told me to find the first modified coach and report, I did and said the ride still had the swaying motion and suggested the track played a significant part
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Unhappy with new timetable - let us know Last edited by Mark Gleeson : 11-08-2009 at 22:53. |
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#15 | |
Really Regular Poster
Join Date: Mar 2007
Location: Rosslare Line
Posts: 600
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![]() Quote:
I just wanted to ask, Has there been a ride quality test for the new 22k IC railcars ?..... |
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#16 |
Really Regular Poster
Join Date: Dec 2005
Posts: 585
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![]() Wasn't the Cork-Dublin line only recently completed removing sections of jointed track. I certainly remember there being sections of track that caused that clunk-clunk sound associated with 1950s movies and steam trains, and that's not very long ago eg early 00s
if they were replacing track that recently, why did they use substandard specifications or materials?! Is it not just a gross waste of public funds to lay something that is of low quality and will need replacement?! |
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#17 |
Technical Officer
Join Date: Dec 2005
Location: Coach C, Seat 33
Posts: 12,669
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![]() Bulk of Dublin Cork was relayed in the 1976-1995 bracket
Yes it was done in a hurry. The 201 class locomotives are also outside spec on track forces which isn't helping There are 3 or 4 renewed sections in place and they are very very smooth
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#18 | |
Really Regular Poster
Join Date: Dec 2005
Posts: 585
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![]() Quote:
Hmm, sounds like specifications aren't one of Irish Rail's strong points. I'm begining to wonder what their strong points actually are?! I suppose, it's not surprising given the fact that in lots of places the trains are the wrong height for the platforms and you'd nearly need to be a poll vaulter to get into the train at Cork's Kent Station the gap's so big... and an endless list of specification and project management related errors that are visible throughout the 'system'. |
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#19 |
Regular Poster
Join Date: May 2006
Posts: 103
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![]() Ah now Mr X - the Cork Station was built 150 years ago.
The carriage specs then were very different compared to now. |
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#20 |
Technical Officer
Join Date: Dec 2005
Location: Coach C, Seat 33
Posts: 12,669
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![]() 201 is outside spec on track forces
The track laid was designed for 90mph with a 99 ton locomotive not a 100 mph 118 ton one The new Mk4 coaches are each 5 tons heavier than the Mk3 The Mk4 should have higher track forces than the Mk3 The service frequency on the Cork line has effectively tripled in 10 years More trains run making fewer stops, more track wear It all adds up to serious track problems. Even the trusty Mk3 can have problems. The Mk4 suspension could be better but its unlikely to significantly change matters unless track is also fixed.
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