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| Flashing yellows and semaphores 02/05/2018 at 19:23 #107802 | |
Steamer
3984 posts 
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A random thought that popped into my head recently: Were there ever semaphore junction signals with a colour light distant that was fitted with a flashing yellow aspect for the diverging route?
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| Flashing yellows and semaphores 02/05/2018 at 20:43 #107805 | |
9pN1SEAp
1180 posts |
Wouldn't have thought so. I've only seen junction distants with multiple arms. Edit: Although http://www.railsigns.uk/sect6page1/sect6page2.html does show some "theatre" type main signals that no longer exist. Jamie S (JAMS) Last edited: 02/05/2018 at 20:46 by 9pN1SEAp Reason: None given Log in to reply |
| Flashing yellows and semaphores 03/05/2018 at 04:37 #107809 | |
JamesN
1607 posts |
I’ve done a diagram of what I think you’re after: https://i.imgur.com/zPjky74.jpg It’s an unlikely scenario. It would need to be a (relatively) high speed junction on the fringe between a mechanical signalling installation and an MAS signalling installation; where the distance between signalboxes was short enough to put the distant signal under the section/starting signal of the mechanical ‘box. Nonetheless I’ve put some feelers out to a handful of knowledgeable people who may have an example or two. Last edited: 03/05/2018 at 04:47 by JamesN Reason: Added diagram Log in to reply |
| Flashing yellows and semaphores 03/05/2018 at 09:01 #107810 | |
Splodge
717 posts
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I get the impression the question refers to the signals being the other way round - the distant is colour light going on to a semaphore stop signal capable of signalling a diverging route.
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| Flashing yellows and semaphores 03/05/2018 at 19:20 #107817 | |
GeoffM
6376 posts |
Splodge in post 107810 said:I get the impression the question refers to the signals being the other way round - the distant is colour light going on to a semaphore stop signal capable of signalling a diverging route.That's how I read it too. Colour light distants with semaphore stop signals are fairly common; having that distant show flashing single yellow is not - but never, or just very rare? SimSig Boss Log in to reply |
| Flashing yellows and semaphores 03/05/2018 at 19:41 #107818 | |
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9pN1SEAp
1180 posts |
It would seem unlikely to have flashing aspects, the wiring from semaphores would surely only have On or Off, and combining multiple On/Offs to make a decision would make the logic circuits more complicated and more likely to fail to prove?
Jamie S (JAMS) Log in to reply |
| Flashing yellows and semaphores 03/05/2018 at 19:53 #107819 | |
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AndyG
1842 posts |
I can throw this into the mix: A semaphore+YGY reading through to a 4 aspect colour light with a diverging route. We have this at Thames Ditton miniature rly, although in this case the 4 aspect at the junction is in fact App Con from red. In the diagram, sig 63 is the last signal from a semaphore area, reading through to sig 55 with 2 diverging routes (ditto 64-60). If the divergent line speed was suitable, I think 63 could be a flashing Y onto 55 with a diverging route. Post has attachments. Log in to view them. I can only help one person a day. Today's not your day. Tomorrow doesn't look too good either. Last edited: 03/05/2018 at 19:54 by AndyG Reason: None given Log in to reply |
| Flashing yellows and semaphores 04/05/2018 at 09:05 #107820 | |
Peter Bennet
5402 posts |
Would a flashing semaphore distant have the arm bounce up and down? Peter I identify as half man half biscuit - crumbs! Log in to reply The following user said thank you: Stephen Fulcher |
| Flashing yellows and semaphores 04/05/2018 at 09:31 #107821 | |
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Sacro
1171 posts |
Peter Bennet in post 107820 said:Would a flashing semaphore distant have the arm bounce up and down?Or down and up, region dependant. Log in to reply The following user said thank you: postal |
| Flashing yellows and semaphores 04/05/2018 at 12:57 #107823 | |
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Stephen Fulcher
2078 posts |
I'd have thought if they went to the effort of providing a high speed turnout and flashing distant they'd just replace the semaphore bracket for a colour light at the same time.
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| Flashing yellows and semaphores 05/05/2018 at 08:36 #107830 | |
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Haraubrad
103 posts |
The layout at Ashendon Junction after the re-signalling was interesting. on the down there colur light distant, colour light home and semaphore section signals which were about 400 yards from the home signal. The sequences were as follows. To Brill & Ludgersal, Section signal off, Green distant green home. Section signal on, single yellow distant, red home on approach single yellow. To Grendon Junction, section signal off, Double yellow distant, single yellow Home with junction indicator, on approach green. Section signal on. Single yellow distant, red home, on approach single yellow with indicator. Aubrey Log in to reply |
