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Post by dm1 on Apr 19, 2017 14:01:35 GMT
As a long time lurker I finally felt it was time to post.
Can somebody explain the purpose of the blockade around Harrow on the Hill over the Easter weekend. The twitter feed suggested it was to do with pointwork and approach speeds?
On my most recent journey on Tuesday there appeared to be many orange people on the track still working (especially on the slow lines north of HotH). There also appeared to be lots of new ballast, some grey cables and some points appear to have been freshly painted white again.
What effects will it have on journeys and/or the timetable and was it in any way connected with the ATC signalling upgrades?
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Deleted
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Post by Deleted on Apr 19, 2017 14:12:57 GMT
I believe the points at Harrow North Junction were replaced
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Post by Dstock7080 on Apr 19, 2017 14:42:53 GMT
I believe the points at Harrow North Junction were replaced South junction this weekend, north junction to follow |
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Post by A60stock on Apr 19, 2017 18:34:48 GMT
noticed the new layout at harrow south, what was the reason for the change?
Are the northbound crossovers going to be replaced as well?
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Deleted
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Post by Deleted on Apr 19, 2017 18:36:00 GMT
What is the new layout at Harrow South?
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Post by Harsig on Apr 19, 2017 18:58:14 GMT
What is the new layout at Harrow South? The scissor crossover south of platforms five and six has been removed and replaced by two separate crossovers slightly further south (so that they are on a straight section of line). |
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londoner
thinking on '73 stock
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Post by londoner on Apr 19, 2017 20:30:18 GMT
I had noticed the changes (visually) south of platform 5 and 6, but having ridden on a slow train, arriving at platform 6 and changing to the slow line, the train still shakes quite a bit over the points, as before with the scissors.
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Post by philthetube on Apr 20, 2017 5:52:45 GMT
Speeds gone from 20/25 up to line speed south of Harrow over the points/all routes.
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DWS
every second count's
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Post by DWS on Apr 20, 2017 8:49:11 GMT
What is the new layout at Harrow South? The scissor crossover south of platforms five and six has been removed and replaced by two separate crossovers slightly further south (so that they are on a straight section of line). Also gone are the movable angles on 203 points when it was part of the scissors crossover. |
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Post by jetblast787 on Apr 20, 2017 9:04:30 GMT
The scissor crossover south of platforms five and six has been removed and replaced by two separate crossovers slightly further south (so that they are on a straight section of line). Also gone are the movable angles on 203 points when it was part of the scissors crossover. That's disappointing to hear, but I guess economics comes before nostalgia! Am I correct in assuming that is the last moveable angle points on the LU network? |
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Post by Harsig on Apr 20, 2017 10:18:49 GMT
Also gone are the movable angles on 203 points when it was part of the scissors crossover. That's disappointing to hear, but I guess economics comes before nostalgia! Am I correct in assuming that is the last moveable angle points on the LU network? No. There are still another four examples in the Harrow area, Nos 200MA, 202MA, 215MA & 217MA. |
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Post by version3point1 on May 8, 2017 22:10:51 GMT
I had noticed the changes (visually) south of platform 5 and 6, but having ridden on a slow train, arriving at platform 6 and changing to the slow line, the train still shakes quite a bit over the points, as before with the scissors. Lateral displacement issue, which was there before the works were carried out. Not really much you can do because of the curve/gradient out of Harrow, but it's better than what it was from a driving perspective. We have replaced our old knackered points with shiny new Surelocks (which is what allows us to run over them at increased speeds):  Speeds gone from 20/25 up to line speed south of Harrow over the points/all routes. Departing Platform 6 and proceeding down the SB fast was always 30mph, going up to 60mph once clear of the points. If going over to the SB local, it was 20mph over the points. Departing Platform 5 and proceeding down the SB local was previously 30mph, including over the points, resuming to 50mph once clear of the points. If going over to the SB fast, it was 20mph over the points. We can now depart at 50mph from both platforms. |
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Deleted
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Post by Deleted on May 9, 2017 6:07:30 GMT
Surelocks have there own issues
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Deleted
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Post by Deleted on May 9, 2017 21:02:37 GMT
Surelocks have there own issues And don't make the same hiss and clunk of pneumatic points  |
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Tom
Administrator
Signalfel?
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Post by Tom on May 22, 2017 20:56:26 GMT
The Harrow TOs were rather glad we did the junction - they hated both the Clamplock mechanisms that were previously used and the position of the crossover on a curve. This is a much better arrangement from both an Engineering perspective and a staff safety perspective.
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