Is this a bit more difficult than it seems?
Discussion
https://www.bbc.co.uk/news/av/world-europe-6344253...
What's involved in this in practical terms, other than coupling a s
tload of coaches together?
What's involved in this in practical terms, other than coupling a s
tload of coaches together?
That said I've been a little spoiled having seen some of the Canadian freight-trains recentlyBonefish Blues said:
https://www.bbc.co.uk/news/av/world-europe-6344253...
What's involved in this in practical terms, other than coupling a stload of coaches together?
Finding a 1.2 mile long platform is not easy!What's involved in this in practical terms, other than coupling a s
tload of coaches together?I would have thought it will depend on
1. how long the track circuit blocks are and what effect the long train being in two or more blocks has on any automated train detection & control system
2. how the signalling system works and what train weight and stopping distances are inherent in its design. I'd assume that for something like this there's nothing in front and nothing behind for miles, because it will take longer for this to stop than the norm. Was this done as an end of season special?
3. whether you need to redistribute the stock for Monday morning and how you do that afterwards.
Hell of a thing to see though.
1. how long the track circuit blocks are and what effect the long train being in two or more blocks has on any automated train detection & control system
2. how the signalling system works and what train weight and stopping distances are inherent in its design. I'd assume that for something like this there's nothing in front and nothing behind for miles, because it will take longer for this to stop than the norm. Was this done as an end of season special?
3. whether you need to redistribute the stock for Monday morning and how you do that afterwards.
Hell of a thing to see though.
Presumably you've got to distribute/balance the amount of effort from the engine units and from braking, within certain limits - particularly on inclines - otherwise some couplings will be over-stressed and break?
Or even (on bends) derail the train if the stresses are trying to 'straighten out' the train when the track wants it to go around a bend?
Or even (on bends) derail the train if the stresses are trying to 'straighten out' the train when the track wants it to go around a bend?
Looks like they’re EMUs so you’ve got to consider the current draw from the overhead, can it supply all those units? Can the OHLE physically take all those pantographs raised in a short section without causing a de-wirement.
Voltage drop across the couplers for the control curcuits, assuming they are similar to our units. For example the command for power has to go from the drivers desk in the lead unit through all the safety systems on each vehicle (ok=yes I’ll give you power, no=f@@k off drive no chance) and back to the drivers desk so you get a voltage drop as the electrical signal travels along the wires. We’re limited to 3x 3 car units for this reason.
Just getting the bloody things to couple up correctly in the first place. Just coupling up two units you often get faults and have to uncouple and try again. If they’re newer stock then the trains computer will have to accept a configuration that it was never intended to run as.
Voltage drop across the couplers for the control curcuits, assuming they are similar to our units. For example the command for power has to go from the drivers desk in the lead unit through all the safety systems on each vehicle (ok=yes I’ll give you power, no=f@@k off drive no chance) and back to the drivers desk so you get a voltage drop as the electrical signal travels along the wires. We’re limited to 3x 3 car units for this reason.
Just getting the bloody things to couple up correctly in the first place. Just coupling up two units you often get faults and have to uncouple and try again. If they’re newer stock then the trains computer will have to accept a configuration that it was never intended to run as.
I thought that it was a good idea. then noticed it was 20 5 car EMU coupled together. so no problemd with power at front only, as each unit was running under its own power
News ais 7 drivers were involved so it looks like several were coupled together fot multi unit running and all the drives had to do was balance the speeds
Still a great thing esp going under itself on those loops
News ais 7 drivers were involved so it looks like several were coupled together fot multi unit running and all the drives had to do was balance the speeds
Still a great thing esp going under itself on those loops
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