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Mark Gleeson · 11-08-2009, 10:53

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.

11-08-2009, 10:53	#7
Mark Gleeson Technical Officer Join Date: Dec 2005 Location: Coach C, Seat 33 Posts: 12,669	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. __________________ Unhappy with new timetable - let us know Last edited by Mark Gleeson : 11-08-2009 at 10:58.