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#1 |
Regular Poster
Join Date: Nov 2008
Posts: 146
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![]() Mark - I'm not a technical person so please can you expand upon this point: 'For reference a 3 coach ICR would use twice the fuel of a 2 coach 2700 and would be slower point to point and massively increase track wear.'
Anyway an ICR would not be needed just a revamped 2700 would do nicely. |
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#2 |
Really Really Regluar Poster
Join Date: Aug 2006
Location: Toronto, Canada
Posts: 1,371
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![]() PLUMB LOCO - don't have the specs to hand but suspect a 22K being a 100mph set is optimised for higher cruise speeds so the gearing is probably not optimised for rattling along at 40mph. Also, the additional on-train systems probably mean higher power consumption from the electrical generators as opposed to the simpler 2700s.
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#3 | |
Technical Officer
Join Date: Dec 2005
Location: Coach C, Seat 33
Posts: 12,669
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![]() Quote:
Report from shed in Cork stated 20% more fuel 3 car ICR vs 4 car 2700 per day, so a 2 car 2700 uses half (not exactly half due aerodynamic drag). ICR is useless in low speed stop start operation, it was designed for long distance high speed start stop, it must get above 60mph before it shows any serious performance and burns a lot of fuel to get there. 2700 is faster to 60mph and anyway the regional routes are 50mph tops Just having the heating on a Mk3 set would use more fuel in a day that either before you add fuel for an engine
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Unhappy with new timetable - let us know Last edited by Mark Gleeson : 08-04-2010 at 15:40. |
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