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Minor corrections

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Minor corrections 31/12/2018 at 18:10 #114459
TUT
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I've just noticed that in the 2016 era, WMSC's signals at Aynho junction are correctly labelled NA4763 and NA9769, however, the inner and outer distants are still labelled BS303R(R) and BS501R(R).

I also believe opposing locking should be omitted for OB1768 and OB5001 at Banbury Road.

Also JT82 (Chalfont and Latimer northbound outer home) is still three-aspect and I've seen it show as three-aspect in some plans, but it is definitely four-aspect.

Last edited: 31/12/2018 at 18:10 by TUT
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Minor corrections 08/08/2019 at 22:15 #119963
9pN1SEAp
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Also a minor cosmetic. The Southbound exit at Harrow in full LUL mode - the crossover isn't a scissor junction IRL.

And could the boundary between North and BCS-OXF be drawn in please.

Jamie S (JAMS)
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Minor corrections 08/08/2019 at 23:52 #119964
Hap
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Boundary issue has already been logged #17275
HAP
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Minor corrections 09/08/2019 at 01:21 #119966
TUT
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9pN1SEAp in post 119963 said:
Also a minor cosmetic. The Southbound exit at Harrow in full LUL mode - the crossover isn't a scissor junction IRL.
Good spot, but it used to be a scissors crossover. It was only converted to two independent crossovers fairly recently, though I'm not sure when and whether or not it was too recently to be included in any of the eras of Marylebone currently simulated

9pN1SEAp in post 119963 said:
And could the boundary between North and BCS-OXF be drawn in please.
In real life that section is just part of the North panel, although I believe it is planned for it to go into Rugby ROC along with Claydon and the East-West line some time before the eventual closure of the rest of Marylebone IECC

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Minor corrections 09/08/2019 at 03:14 #119967
GeoffM
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TUT in post 119966 said:
9pN1SEAp in post 119963 said:
Also a minor cosmetic. The Southbound exit at Harrow in full LUL mode - the crossover isn't a scissor junction IRL.
Good spot, but it used to be a scissors crossover. It was only converted to two independent crossovers fairly recently, though I'm not sure when and whether or not it was too recently to be included in any of the eras of Marylebone currently simulated
Dated April 2017, so yes, dated later than the sim. By May 2018 it was separate crossovers.


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Last edited: 09/08/2019 at 03:15 by GeoffM
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Minor corrections 09/08/2019 at 07:54 #119968
9pN1SEAp
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Fancy that. They ripped out the junction and I never noticed :)

Thanks all!

Jamie S (JAMS)
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Minor corrections 09/08/2019 at 12:27 #119969
TUT
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Looks like it was done in a blockade in Easter 2017:

http://districtdavesforum.co.uk/thread/28132/metropolitan-line-easter-blockade-2017

So looks like it was probably just a few days or weeks after that photo was taken Geoff

Last edited: 09/08/2019 at 12:29 by TUT
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Minor corrections 12/08/2019 at 21:32 #120022
metcontrol
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I knew it had happened but didn't realise it had been as long ago as 2017. Time flies.

There are other similar changes planned at Harrow over the coming months/years (funding/new signalling system pending) with most of the crossovers being replaced either as "simpler" scissors or split crossovers as they did in 2017 on the southbound. The aim is to remove the "move-able angles" which are a maintenance and failure nightmare. For those who don't know, put simply the "diamond" within the scissors also has point blades so when the route is set across the crossover, there is a continuous rail throughout the route. They are notoriously unreliable especially during periods of very hot weather (though the current "summer" is proving slightly less problematic).

In terms of the LUL bit on Marylebone, Harrow North Junction (between North Harrow and Harrow-on-the-Hill) is also on the cards for replacement plus numerous alterations at Amersham including the loss of a siding. However one bit that won't now be changing is a junction south of Watford leading to a wish-list branch and chain to Watford Suburban / Watford Junction.

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Minor corrections 13/08/2019 at 16:56 #120024
Steamer
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metcontrol in post 120022 said:

There are other similar changes planned at Harrow over the coming months/years (funding/new signalling system pending) with most of the crossovers being replaced either as "simpler" scissors or split crossovers as they did in 2017 on the southbound. The aim is to remove the "move-able angles" which are a maintenance and failure nightmare. For those who don't know, put simply the "diamond" within the scissors also has point blades so when the route is set across the crossover, there is a continuous rail throughout the route. They are notoriously unreliable especially during periods of very hot weather (though the current "summer" is proving slightly less problematic).
Interesting. Why did LUL install them? Heavy rail tends only to use them in high speed areas. Does LUL provide them on points with tight curves?

"Don't stress/ relax/ let life roll off your backs./ Except for death and paying taxes/ everything in life.../ is only for now." (Avenue Q)
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Minor corrections 13/08/2019 at 18:12 #120025
metcontrol
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I am not sure of the exact reasons they were installed other than they were originally provided for faster crossing speeds. Network-wide there are a multitude of oddities like this and the Harrow area in particular (especially the signal cabin itself) is littered with lots of different examples.

Unlike the rest of LU, the part of the Met Line depicted in Marylebone is much more like the national rail network, with mostly full-speed overlaps and multi-aspect signalling (albeit provided by LU style signals).

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