Willesden Overlap triangle

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Willesden Overlap triangle 18/09/2010 at 00:13 #1784
Underwood
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746 posts 		Hello all,

Has anyone tried using the yellow triangle at Willesden Junction Platform 1 by signal 22? I had a train wanting to come out of Platform 2 for the NLL, so I pathed a tube train from sig 24 -> 22, however this set the overlap across basically all the pointwork south of the station. So I pulled back the signal while I had a chance, and set the route to the yellow triangle...however this still locks the route out of platform 2.

Is this correct? I would have thought the overlap wouldn't reach far as doing so from 24 -> 22 yellow triangle requires a signal check anyway.


Sorry if this is not a bug, just thought I would report it in case.


Cheers,

James.
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Willesden Overlap triangle 18/09/2010 at 00:13 #11566
Underwood
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746 posts 		Hello all,

Has anyone tried using the yellow triangle at Willesden Junction Platform 1 by signal 22? I had a train wanting to come out of Platform 2 for the NLL, so I pathed a tube train from sig 24 -> 22, however this set the overlap across basically all the pointwork south of the station. So I pulled back the signal while I had a chance, and set the route to the yellow triangle...however this still locks the route out of platform 2.

Is this correct? I would have thought the overlap wouldn't reach far as doing so from 24 -> 22 yellow triangle requires a signal check anyway.


Sorry if this is not a bug, just thought I would report it in case.


Cheers,

James.
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Willesden Overlap triangle 18/09/2010 at 01:17 #11568
UKTrainMan
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1803 posts 		From the manual;

Quote:
Introduction

Wembley Suburban has been written at the request of the manager of the real Wembley Suburban PSB and with the aid of detailed signalling diagrams. It should, therefore, be as accurate as practical.
Any views and / or opinions expressed by myself are from me personally and do not represent those of any company I either work for or am a consultant for.
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Willesden Overlap triangle 18/09/2010 at 01:53 #11569
Jsun
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212 posts 		Keep in mind that overlaps associated with trip arms are designed for trains passings signals at track speed and therefore would be very restrictive in the case of common point work.
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Willesden Overlap triangle 18/09/2010 at 08:19 #11571
jrr
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95 posts 		I have successfully used the triangle. You set the conflicting route first (platform 2 to NLL) then signal 24 > 22. Initially 24 remains red until the approaching train has slowed enough then clears to allow that train into platform 1.
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Willesden Overlap triangle 18/09/2010 at 13:37 #11577
JamesN
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1576 posts 		The OP isn't about how to use it, it's about the overlap that is used with the Warner Route.

The ROL allows trains to come off the line from Kensal HL Jn, while a train is routed into P1 - unfortunately there is not sufficient overlap to allow a train out of 2 while a train is routed into 1 - if you happen to go to Willesden Jn LL you'll see the pointwork is right on top of the signal, and no warner route would be safe for that move.

HTH
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Willesden Overlap triangle 18/09/2010 at 18:16 #11585
clive
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2738 posts 		That overlap was surprising enough that I asked twice to confirm. It's definitely like that and, no, I don't understand why there isn't a swingeable overlap on to the branch. There's a couple of other unusual overlaps around as well.
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Willesden Overlap triangle 18/09/2010 at 18:52 #11589
Underwood
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746 posts 		Thank you guys, much appreciated!

Not been to WLL in recent times so un-sure of where sig 22 is placed.

Sorry for the false alarm Clive, thought it was best to check though in case.
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Willesden Overlap triangle 18/09/2010 at 23:13 #11596
UKTrainMan
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1803 posts 		jrr said:
I have successfully used the triangle. You set the conflicting route first (platform 2 to NLL) then signal 24 > 22. Initially 24 remains red until the approaching train has slowed enough then clears to allow that train into platform 1.
Errrr, that doesn't seem possible. Followed that as you said, Platform 2 starter signal onto NLL ('Kensal Green Jn'then Signal 24 to Signal 22 and that won't set the route.


Anyway, whilst we're on the subject of Willesden Junction, shouldn't the station be called Willesden Junction Low Level?


Finally, I'll actually be in that area sometime next week so I'll grab a photo of Signal 22 to show you all.
Any views and / or opinions expressed by myself are from me personally and do not represent those of any company I either work for or am a consultant for.
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Willesden Overlap triangle 19/09/2010 at 15:08 #11624
kbarber
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1712 posts 		UKTrainMan said:

Anyway, whilst we're on the subject of Willesden Junction, shouldn't the station be called Willesden Junction Low Level?

In my day it was called Willesden New Station, so was the signalbox, although the bobby usually answered the phone with "New Line Box".
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Willesden Overlap triangle 19/09/2010 at 15:43 #11626
Peter Bennet
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5362 posts 		It's just "Willesden Junction" on the panel (and it's "Queens Park" there too- harking back to an earlier query).

Peter
I identify as half man half biscuit - crumbs!
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