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Carstairs TSR’s/ remodelling

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Ceat0908

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Is the carstairs remodelling still going ahead? The 50mph TSRs have been in place for a long time (I’m sure they were 70mph but have since been decreased) Can anyone explain why this is the case and why normal line speeds can’t be permitted whilst the original layout still exists as I believe timings through carstairs are the same.
 
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The Planner

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Still planned to happen. Doubt its cost effective to fix if they know they are going in to sort it as a wider scheme. The timetable has allowances for TSRs inbuilt.
 

CEN60

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There is a remodeling scheme happening (at detailed design stage now) - however the scheme now proposed is a bit "half baked" from a recent design developed by a feasibility study 3 years ago. The scheme proposed retains the station in it current location. The feasibility scheme moved the platform north on the "CSP" lines. The scheme being implemented is an improvement from what is there - but as usual "Here's what you could have won!"
 

route101

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I noticed they have put down some workers site accommodation and a tarmac road to NW of the station. Not sure if its related.
 

The Planner

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Possessions are still being challenged, but still on course for early 23.
 

92042

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According to a couple of diagrams (on Railcam and Traksy) 4Z31/417U appears currently to be parked at Ravenstruther. Is this of any significance to the above discussion?
 

cle

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How many minutes will be knocked off journey times (for non-stop trains) after it’s done?
 

Watershed

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How many minutes will be knocked off journey times (for non-stop trains) after it’s done?
110mph was the figure I heard floating around. Obviously not a massive difference to what's theoretically possible now, but getting rid of the longstanding TSR will help quite a bit on its own.

Edinburgh trains will benefit from an upgrade to 30mph round the south-east chord.

It's unlikely that the timetable will be recast solely as a result of this work to allow end to end journey times to change. But it should lead to an elimination of the low level delays that currently accumulate.

And when the wider WCML recast happens obviously the new timings will be taken into account.
 

najaB

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110mph was the figure I heard floating around. Obviously not a massive difference to what's theoretically possible now, but getting rid of the longstanding TSR will help quite a bit on its own.

Edinburgh trains will benefit from an upgrade to 30mph round the south-east chord.
I expect that the main outcome of this work will be increased reliability rather than higher speeds..
 

jfollows

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How many minutes will be knocked off journey times (for non-stop trains) after it’s done?
Probably one minute: the long-standing 50mph TSR versus 90mph line speed means 32 seconds per mile longer (and the length of the TSR is about a mile), but then some allowance for slow-down and acceleration could be added to that. Increase line speed back to greater than 90mph will make the savings greater. But not much more than this - as said it's unlikely to feed through into achievable actual reduced timings for a while anyway, but will improve reliability.
 

The Planner

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110mph was the figure I heard floating around. Obviously not a massive difference to what's theoretically possible now, but getting rid of the longstanding TSR will help quite a bit on its own.

Edinburgh trains will benefit from an upgrade to 30mph round the south-east chord.

It's unlikely that the timetable will be recast solely as a result of this work to allow end to end journey times to change. But it should lead to an elimination of the low level delays that currently accumulate.

And when the wider WCML recast happens obviously the new timings will be taken into account.
Doubt it will as Carstairs isn't complete before Dec 22.
Probably one minute: the long-standing 50mph TSR versus 90mph line speed means 32 seconds per mile longer (and the length of the TSR is about a mile), but then some allowance for slow-down and acceleration could be added to that. Increase line speed back to greater than 90mph will make the savings greater. But not much more than this - as said it's unlikely to feed through into achievable actual reduced timings for a while anyway, but will improve reliability.
Engineering allowance covers it as it stands I suspect.
 

jfollows

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Engineering allowance covers it as it stands I suspect.
I note that a typical Euston-Glasgow service has 12 minutes of engineering allowance added to the schedule, so at the moment the Carstairs TSR can be guaranteed to eat up 1 minute (approximately) of that, and won't when the TSR is removed. Not hugely significant for the overall schedule/timing I agree.
 

The Planner

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I note that a typical Euston-Glasgow service has 12 minutes of engineering allowance added to the schedule, so at the moment the Carstairs TSR can be guaranteed to eat up 1 minute (approximately) of that, and won't when the TSR is removed. Not hugely significant for the overall schedule/timing I agree.
It does nothing as you just don't use the box time on the day. You won't remove the allowance.
 

Watershed

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I note that a typical Euston-Glasgow service has 12 minutes of engineering allowance added to the schedule, so at the moment the Carstairs TSR can be guaranteed to eat up 1 minute (approximately) of that, and won't when the TSR is removed. Not hugely significant for the overall schedule/timing I agree.
It will allow the engineering allowance to be used for what it's intended for - ESRs and (true) TSRs. There is basically always a TSR on at least one of the summits.
 

jfollows

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It will allow the engineering allowance to be used for what it's intended for - ESRs and (true) TSRs. There is basically always a TSR on at least one of the summits.
Yes, thank you, I think we're agreeing violently, just saying the same thing in different ways!
 

92002

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According to a couple of diagrams (on Railcam and Traksy) 4Z31/417U appears currently to be parked at Ravenstruther. Is this of any significance to the above discussion?
Think your probably talking about this one. Not my photo
 

92042

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Think your probably talking about this one. Not my photo
Many thanks, 92002. I drive past here often and was interested to see some railway activity after quite a long time!
 
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